View allAll Photos Tagged ECOSYSTEMS
Bee Butts — Well, we may not "Break the Internet" with this one, but we like bee butts and we cannot lie!
This is the backend of a Lipotriches (Plain Sweat Bee) collected in Australia. This is one of the bees in which the males are known to form sleeping aggregations – small groups to dozens of individuals clustering together on the same twig late in the afternoon and remaining there until after dawn. There may be quite a lot of “jockeying for position” as males alight too close to another individual with low key aggressive interactions. Some clusters might contain more than one species. There has been little research on the reason for this aggregating behavior, although safety in numbers might play a role.
You can find more bees, all for public domain use, from our Bee Inventory and Monitoring Lab at flickr.com/photos/usgsbiml.
United States, California, Bombay Beach
In the 1950s and '60s, Bombay Beach in California was a thriving resort. Guests swam, water-skied, and golfed during the day, then headed to the yacht club to party into the night.
Now, Bombay Beach is a bleached, rusted, abandoned wasteland. The water smells of salt, petrol, and rotting fish. The shores, once lined with sunbathers, are covered in green sludge and desiccated fish carcasses. It's an apocalyptic landscape.
To understand how this place turned from paradise to nightmare, you need to know the story of Salton Sea.
It was created in 1891 after a heavy rain caused the Colorado River to burst through the banks of an irrigation canal, sending millions of gallons of water into a previously dried out lake bed in the California desert.
At this time Bombay Beach was going to be California's version of the French Riviera . It initially appeared to deliver substantial benefits. Birds flocked to the area, and fish thrived in the Salton Sea. Developers seized upon the rare setting and branded it the "Salton Riviera," or a "miracle in the desert." Hotels, yacht clubs, homes, and schools sprang up along the shores as the Salton Sea became a resort destination.
But disaster loomed. By the late 1970s, the ecosystem was deteriorating rapidly. With no drainage outlet, almost zero yearly rainfall, and runoff flowing in from nearby farms, the sea was polluted with pesticides and saltier than the Pacific Ocean. Periodic flooding brought the poisoned water further ashore. Depleted oxygen in the sea killed scores of fish and dragged. Everyone left, and the Salton Sea fell into misery.
The few remaining residents today live in vans, where they hide out from the blazing sun.
Aambyvalley Rd.,Off Lonavala,Mah.,India
www.inaturalist.org/observations/22136348
unusual guest to light.
additional photo below.
Aambyvalley rd., Upper Lonavala Maharashtra India
Endemic to Western ghats
This species is legally protected in India under Schedule II of the Wildlife (Protection) Act, 1972
Ecosystem services - I recently contributed illustration for the DEFRA Natural Environment White Paper, which is launched today. DEFRA - The Department for Environment, Food and Rural Affairs is a government department in the UK. You can download the Natural Environment White Paper here
www.defra.gov.uk/environment/natural/whitepaper/
The Natural Environment White Paper is a bold and ambitious statement outlining the Government’s vision for the natural environment over the next 50 years, backed up with practical action to deliver that ambition.
Nature is sometimes taken for granted and undervalued. But people cannot flourish without the benefits and services our natural environment provides. A healthy, properly functioning natural environment is the foundation of sustained economic growth, prospering communities and personal wellbeing.
© Rod Hunt 2011
View Rod Hunt full portfolio here
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(c) Dr Stanislav Shmelev
I am absolutely delighted to let you know that my new album, 'ECOSYSTEMS' has just been published: stanislav.photography/ecosystems
It has been presented at the Club of Rome 50th Anniversary meeting, the United Nations COP24 conference on climate change, a large exhibition held at the Mathematical Institute of Oxford University and the Environment Europe Oxford Spring School in Ecological Economics and now at the United Nations World Urban Forum 2020. There are only 450 copies left so you will have to be quick: stanislav.photography/ecosystems
You are most welcome to explore my new website: stanislav.photography/ and a totally new blog: environmenteurope.wordpress.com/
#EnvironmentEurope #EcologicalEconomics #ECOSYSTEMS #sustainability #GreenEconomy #renewables #CircularEconomy #Anthropocene #ESG #cities #resources #values #governance #greenfinance #sustainablefinance #climate #climatechange #climateemergency #renewableenergy #planetaryboundaries #democracy #energy #accounting #tax #ecology #art #environment #SustainableDevelopment #contemporary #photography #nature #biodiversity #conservation #coronavirus #nature #protection #jungle #forest #palm #tree #Japan #Europe #USA #South #America #Colombia #Brazil #France #Denmark #Russia #Kazakhstan #Germany #Austria #Singapore #Albania #Italy #landscape #new #artwork #collect #follow #like #share #film #medium #format #Hasselblad #Nikon #CarlZeiss #lens
Yellowstone National Park (Arapaho: Henihco'oo or Héetíhco'oo) is a national park located primarily in the U.S. state of Wyoming, although it also extends into Montana and Idaho. It was established by the U.S. Congress and signed into law by President Ulysses S. Grant on March 1, 1872. Yellowstone, widely held to be the first national park in the world, is known for its wildlife and its many geothermal features, especially Old Faithful Geyser, one of the most popular features in the park. It has many types of ecosystems, but the subalpine forest is most abundant. It is part of the South Central Rockies forests ecoregion.
Yellowstone National Park spans an area of 3,468.4 square miles (8,983 km2), comprising lakes, canyons, rivers and mountain ranges. Yellowstone Lake is one of the largest high-altitude lakes in North America and is centered over the Yellowstone Caldera, the largest supervolcano on the continent. The caldera is considered an active volcano. It has erupted with tremendous force several times in the last two million years. Half of the world's geothermal features are in Yellowstone, fueled by this ongoing volcanism. Lava flows and rocks from volcanic eruptions cover most of the land area of Yellowstone. The park is the centerpiece of the Greater Yellowstone Ecosystem, the largest remaining nearly-intact ecosystem in the Earth's northern temperate zone.
Hundreds of species of mammals, birds, fish and reptiles have been documented, including several that are either endangered or threatened. The vast forests and grasslands also include unique species of plants. Yellowstone Park is the largest and most famous megafauna location in the Continental United States. Grizzly bears, wolves, and free-ranging herds of bison and elk live in the park. The Yellowstone Park bison herd is the oldest and largest public bison herd in the United States. Forest fires occur in the park each year; in the large forest fires of 1988, nearly one third of the park was burnt. Yellowstone has numerous recreational opportunities, including hiking, camping, boating, fishing and sightseeing. Paved roads provide close access to the major geothermal areas as well as some of the lakes and waterfalls. During the winter, visitors often access the park by way of guided tours that use either snow coaches or snowmobiles.
The park is located at the headwaters of the Yellowstone River, from which it takes its historical name. Near the end of the 18th century, French trappers named the river "Roche Jaune", which is probably a translation of the Hidatsa name "Mi tsi a-da-zi" (Rock Yellow River). Later, American trappers rendered the French name in English as "Yellow Stone". Although it is commonly believed that the river was named for the yellow rocks seen in the Grand Canyon of the Yellowstone, the Native American name source is not clear.
The first detailed expedition to the Yellowstone area was the Cook–Folsom–Peterson Expedition of 1869, which consisted of three privately funded explorers. The Folsom party followed the Yellowstone River to Yellowstone Lake. The members of the Folsom party kept a journal and based on the information it reported, a party of Montana residents organized the Washburn-Langford-Doane Expedition in 1870. It was headed by the surveyor-general of Montana Henry Washburn, and included Nathaniel P. Langford (who later became known as "National Park" Langford) and a U.S. Army detachment commanded by Lt. Gustavus Doane.
The expedition spent about a month exploring the region, collecting specimens and naming sites of interest. A Montana writer and lawyer named Cornelius Hedges, who had been a member of the Washburn expedition, proposed that the region should be set aside and protected as a national park; he wrote a number of detailed articles about his observations for the Helena Herald newspaper between 1870 and 1871. Hedges essentially restated comments made in October 1865 by acting Montana Territorial Governor Thomas Francis Meagher, who had previously commented that the region should be protected. Others made similar suggestions. In an 1871 letter from Jay Cooke to Ferdinand V. Hayden, Cooke wrote that his friend, Congressman William D. Kelley had also suggested "Congress pass a bill reserving the Great Geyser Basin as a public park forever".
By 1915, 1,000 automobiles per year were entering the park, resulting in conflicts with horses and horse-drawn transportation. Horse travel on roads was eventually prohibited.
The Civilian Conservation Corps (CCC), a New Deal relief agency for young men, played a major role between 1933 and 1942 in developing Yellowstone facilities. CCC projects included reforestation, campground development of many of the park's trails and campgrounds, trail construction, fire hazard reduction, and fire-fighting work. The CCC built the majority of the early visitor centers, campgrounds and the current system of park roads.
During World War II, tourist travel fell sharply, staffing was cut, and many facilities fell into disrepair. By the 1950s, visitation increased tremendously in Yellowstone and other national parks. To accommodate the increased visitation, park officials implemented Mission 66, an effort to modernize and expand park service facilities. Planned to be completed by 1966, in honor of the 50th anniversary of the founding of the National Park Service, Mission 66 construction diverged from the traditional log cabin style with design features of a modern style. During the late 1980s, most construction styles in Yellowstone reverted to the more traditional designs. After the enormous forest fires of 1988 damaged much of Grant Village, structures there were rebuilt in the traditional style. The visitor center at Canyon Village, which opened in 2006, incorporates a more traditional design as well.
A large arch made of irregular-shaped natural stone over a road
The 1959 Hebgen Lake earthquake just west of Yellowstone at Hebgen Lake damaged roads and some structures in the park. In the northwest section of the park, new geysers were found, and many existing hot springs became turbid. It was the most powerful earthquake to hit the region in recorded history.
In 1963, after several years of public controversy regarding the forced reduction of the elk population in Yellowstone, United States Secretary of the Interior Stewart Udall appointed an advisory board to collect scientific data to inform future wildlife management of the national parks. In a paper known as the Leopold Report, the committee observed that culling programs at other national parks had been ineffective, and recommended management of Yellowstone's elk population.
The wildfires during the summer of 1988 were the largest in the history of the park. Approximately 793,880 acres (321,272 ha; 1,240 sq mi) or 36% of the parkland was impacted by the fires, leading to a systematic re-evaluation of fire management policies. The fire season of 1988 was considered normal until a combination of drought and heat by mid-July contributed to an extreme fire danger. On "Black Saturday", August 20, 1988, strong winds expanded the fires rapidly, and more than 150,000 acres (61,000 ha; 230 sq mi) burned.
The expansive cultural history of the park has been documented by the 1,000 archeological sites that have been discovered. The park has 1,106 historic structures and features, and of these Obsidian Cliff and five buildings have been designated National Historic Landmarks. Yellowstone was designated an International Biosphere Reserve on October 26, 1976, and a UN World Heritage Site on September 8, 1978. The park was placed on the List of World Heritage in Danger from 1995 to 2003 due to the effects of tourism, infection of wildlife, and issues with invasive species. In 2010, Yellowstone National Park was honored with its own quarter under the America the Beautiful Quarters Program.
Heritage and Research Center
The Heritage and Research Center is located at Gardiner, Montana, near the north entrance to the park. The center is home to the Yellowstone National Park's museum collection, archives, research library, historian, archeology lab, and herbarium. The Yellowstone National Park Archives maintain collections of historical records of Yellowstone and the National Park Service. The collection includes the administrative records of Yellowstone, as well as resource management records, records from major projects, and donated manuscripts and personal papers. The archives are affiliated with the National Archives and Records Administration.
Approximately 96 percent of the land area of Yellowstone National Park is located within the state of Wyoming. Another three percent is within Montana, with the remaining one percent in Idaho. The park is 63 miles (101 km) north to south, and 54 miles (87 km) west to east by air. Yellowstone is 2,219,789 acres (898,317 ha; 3,468.420 sq mi) in area, larger than the states of Rhode Island or Delaware. Rivers and lakes cover five percent of the land area, with the largest water body being Yellowstone Lake at 87,040 acres (35,220 ha; 136.00 sq mi). Yellowstone Lake is up to 400 feet (120 m) deep and has 110 miles (180 km) of shoreline. At an elevation of 7,733 feet (2,357 m) above sea level, Yellowstone Lake is the largest high altitude lake in North America. Forests comprise 80 percent of the land area of the park; most of the rest is grassland.
The Continental Divide of North America runs diagonally through the southwestern part of the park. The divide is a topographic feature that separates Pacific Ocean and Atlantic Ocean water drainages. About one third of the park lies on the west side of the divide. The origins of the Yellowstone and Snake Rivers are near each other but on opposite sides of the divide. As a result, the waters of the Snake River flow to the Pacific Ocean, while those of the Yellowstone find their way to the Atlantic Ocean via the Gulf of Mexico.
The park sits on the Yellowstone Plateau, at an average elevation of 8,000 feet (2,400 m) above sea level. The plateau is bounded on nearly all sides by mountain ranges of the Middle Rocky Mountains, which range from 9,000 to 11,000 feet (2,700 to 3,400 m) in elevation. The highest point in the park is atop Eagle Peak (11,358 feet or 3,462 metres) and the lowest is along Reese Creek (5,282 feet or 1,610 metres). Nearby mountain ranges include the Gallatin Range to the northwest, the Beartooth Mountains in the north, the Absaroka Range to the east, and the Teton Range and the Madison Range to the southwest and west. The most prominent summit on the Yellowstone Plateau is Mount Washburn at 10,243 feet (3,122 m).
Yellowstone National Park has one of the world's largest petrified forests, trees which were long ago buried by ash and soil and transformed from wood to mineral materials. This ash and other volcanic debris, are believed to have come from the park area itself. This is largely due to the fact that Yellowstone is actually a massive caldera of a supervolcano. There are 290 waterfalls of at least 15 feet (4.6 m) in the park, the highest being the Lower Falls of the Yellowstone River at 308 feet (94 m).
Three deep canyons are located in the park, cut through the volcanic tuff of the Yellowstone Plateau by rivers over the last 640,000 years. The Lewis River flows through Lewis Canyon in the south, and the Yellowstone River has carved two colorful canyons, the Grand Canyon of the Yellowstone and the Black Canyon of the Yellowstone in its journey north.
Yellowstone is at the northeastern end of the Snake River Plain, a great U-shaped arc through the mountains that extends from Boise, Idaho some 400 miles (640 km) to the west. This feature traces the route of the North American Plate over the last 17 million years as it was transported by plate tectonics across a stationary mantle hotspot. The landscape of present-day Yellowstone National Park is the most recent manifestation of this hotspot below the crust of the Earth.
The Yellowstone Caldera is the largest volcanic system in North America. It has been termed a "supervolcano" because the caldera was formed by exceptionally large explosive eruptions. The magma chamber that lies under Yellowstone is estimated to be a single connected chamber, about 37 miles (60 km) long, 18 miles (29 km) wide, and 3 to 7 miles (5 to 12 km) deep. The current caldera was created by a cataclysmic eruption that occurred 640,000 years ago, which released more than 240 cubic miles (1,000 km³) of ash, rock and pyroclastic materials. This eruption was more than 1,000 times larger than the 1980 eruption of Mount St. Helens. It produced a caldera nearly five eighths of a mile (1 km) deep and 45 by 28 miles (72 by 45 km) in area and deposited the Lava Creek Tuff, a welded tuff geologic formation. The most violent known eruption, which occurred 2.1 million years ago, ejected 588 cubic miles (2,450 km³) of volcanic material and created the rock formation known as the Huckleberry Ridge Tuff and created the Island Park Caldera. A smaller eruption ejected 67 cubic miles (280 km³) of material 1.3 million years ago, forming the Henry's Fork Caldera and depositing the Mesa Falls Tuff.
Each of the three climactic eruptions released vast amounts of ash that blanketed much of central North America, falling many hundreds of miles away. The amount of ash and gases released into the atmosphere probably caused significant impacts to world weather patterns and led to the extinction of some species, primarily in North America.
Wooden walkways allow visitors to closely approach the Grand Prismatic Spring.
A subsequent caldera-forming eruption occurred about 160,000 years ago. It formed the relatively small caldera that contains the West Thumb of Yellowstone Lake. Since the last supereruption, a series of smaller eruptive cycles between 640,000 and 70,000 years ago, has nearly filled in the Yellowstone Caldera with >80 different eruptions of rhyolitic lavas such as those that can be seen at Obsidian Cliffs and basaltic lavas which can be viewed at Sheepeater Cliff. Lava strata are most easily seen at the Grand Canyon of the Yellowstone, where the Yellowstone River continues to carve into the ancient lava flows. The canyon is a classic V-shaped valley, indicative of river-type erosion rather than erosion caused by glaciation.
Each eruption is part of an eruptive cycle that climaxes with the partial collapse of the roof of the volcano's partially emptied magma chamber. This creates a collapsed depression, called a caldera, and releases vast amounts of volcanic material, usually through fissures that ring the caldera. The time between the last three cataclysmic eruptions in the Yellowstone area has ranged from 600,000 to 800,000 years, but the small number of such climactic eruptions cannot be used to make an accurate prediction for future volcanic events.
The most famous geyser in the park, and perhaps the world, is Old Faithful Geyser, located in Upper Geyser Basin. Castle Geyser, Lion Geyser and Beehive Geyser are in the same basin. The park contains the largest active geyser in the world—Steamboat Geyser in the Norris Geyser Basin. A study that was completed in 2011 found that at least 1283 geysers have erupted in Yellowstone. Of these, an average of 465 are active in a given year. Yellowstone contains at least 10,000 geothermal features altogether. Half the geothermal features and two-thirds of the world's geysers are concentrated in Yellowstone.
In May 2001, the U.S. Geological Survey, Yellowstone National Park, and the University of Utah created the Yellowstone Volcano Observatory (YVO), a partnership for long-term monitoring of the geological processes of the Yellowstone Plateau volcanic field, for disseminating information concerning the potential hazards of this geologically active region.
In 2003, changes at the Norris Geyser Basin resulted in the temporary closure of some trails in the basin. New fumaroles were observed, and several geysers showed enhanced activity and increasing water temperatures. Several geysers became so hot that they were transformed into purely steaming features; the water had become superheated and they could no longer erupt normally. This coincided with the release of reports of a multiple year United States Geological Survey research project which mapped the bottom of Yellowstone Lake and identified a structural dome that had uplifted at some time in the past. Research indicated that these uplifts posed no immediate threat of a volcanic eruption, since they may have developed long ago, and there had been no temperature increase found near the uplifts. On March 10, 2004, a biologist discovered 5 dead bison which apparently had inhaled toxic geothermal gases trapped in the Norris Geyser Basin by a seasonal atmospheric inversion. This was closely followed by an upsurge of earthquake activity in April 2004. In 2006, it was reported that the Mallard Lake Dome and the Sour Creek Dome— areas that have long been known to show significant changes in their ground movement— had risen at a rate of 1.5 to 2.4 inches (3.8 to 6.1 cm) per year from mid–2004 through 2006. As of late 2007, the uplift has continued at a reduced rate. These events inspired a great deal of media attention and speculation about the geologic future of the region. Experts responded to the conjecture by informing the public that there was no increased risk of a volcanic eruption in the near future. However, these changes demonstrate the dynamic nature of the Yellowstone hydrothermal system.
Yellowstone experiences thousands of small earthquakes every year, virtually all of which are undetectable to people. There have been six earthquakes with at least magnitude 6 or greater in historical times, including a 7.5‑magnitude quake that struck just outside the northwest boundary of the park in 1959. This quake triggered a huge landslide, which caused a partial dam collapse on Hebgen Lake; immediately downstream, the sediment from the landslide dammed the river and created a new lake, known as Earthquake Lake. Twenty-eight people were killed, and property damage was extensive in the immediate region. The earthquake caused some geysers in the northwestern section of the park to erupt, large cracks in the ground formed and emitted steam, and some hot springs that normally have clear water turned muddy. A 6.1‑magnitude earthquake struck inside the park on June 30, 1975, but damage was minimal.
For three months in 1985, 3,000 minor earthquakes were detected in the northwestern section of the park, during what has been referred to as an earthquake swarm, and has been attributed to minor subsidence of the Yellowstone caldera. Beginning on April 30, 2007, 16 small earthquakes with magnitudes up to 2.7 occurred in the Yellowstone Caldera for several days. These swarms of earthquakes are common, and there have been 70 such swarms between 1983 and 2008. In December 2008, over 250 earthquakes were measured over a four-day span under Yellowstone Lake, the largest measuring a magnitude of 3.9. In January 2010, more than 250 earthquakes were detected over a two-day period. Seismic activity in Yellowstone National Park continues and is reported hourly by the Earthquake Hazards Program of the U.S. Geological Survey.
On March 30, 2014, a magnitude 4.8 earthquake struck almost the very middle of Yellowstone near the Norris Basin at 6.34am; reports indicated no damage. This was the biggest earthquake to hit the park since February 22, 1980.
Over 1,700 species of trees and other vascular plants are native to the park. Another 170 species are considered to be exotic species and are non-native. Of the eight conifer tree species documented, Lodgepole Pine forests cover 80% of the total forested areas. Other conifers, such as Subalpine Fir, Engelmann Spruce, Rocky Mountain Douglas-fir and Whitebark Pine, are found in scattered groves throughout the park. As of 2007, the whitebark pine is threatened by a fungus known as white pine blister rust; however, this is mostly confined to forests well to the north and west. In Yellowstone, about seven percent of the whitebark pine species have been impacted with the fungus, compared to nearly complete infestations in northwestern Montana. Quaking Aspen and willows are the most common species of deciduous trees. The aspen forests have declined significantly since the early 20th century, but scientists at Oregon State University attribute recent recovery of the aspen to the reintroduction of wolves which has changed the grazing habits of local elk.
There are dozens of species of flowering plants that have been identified, most of which bloom between the months of May and September. The Yellowstone Sand Verbena is a rare flowering plant found only in Yellowstone. It is closely related to species usually found in much warmer climates, making the sand verbena an enigma. The estimated 8,000 examples of this rare flowering plant all make their home in the sandy soils on the shores of Yellowstone Lake, well above the waterline.
In Yellowstone's hot waters, bacteria form mats of bizarre shapes consisting of trillions of individuals. These bacteria are some of the most primitive life forms on earth. Flies and other arthropods live on the mats, even in the middle of the bitterly cold winters. Initially, scientists thought that microbes there gained sustenance only from sulfur. In 2005 researchers from the University of Colorado at Boulder discovered that the sustenance for at least some of the diverse hyperthermophilic species is molecular hydrogen.
Thermus aquaticus is a bacterium found in the Yellowstone hot springs that produces an important enzyme (Taq polymerase) that is easily replicated in the lab and is useful in replicating DNA as part of the polymerase chain reaction (PCR) process. The retrieval of these bacteria can be achieved with no impact to the ecosystem. Other bacteria in the Yellowstone hot springs may also prove useful to scientists who are searching for cures for various diseases.
Non-native plants sometimes threaten native species by using up nutrient resources. Though exotic species are most commonly found in areas with the greatest human visitation, such as near roads and at major tourist areas, they have also spread into the backcountry. Generally, most exotic species are controlled by pulling the plants out of the soil or by spraying, both of which are time consuming and expensive.
Yellowstone is widely considered to be the finest megafauna wildlife habitat in the lower 48 states. There are almost 60 species of mammals in the park, including the gray wolf, the threatened lynx, and grizzly bears. Other large mammals include the bison (often referred to as buffalo), black bear, elk, moose, mule deer, white-tailed deer, mountain goat, pronghorn, bighorn sheep, and mountain lion.
Bison graze near a hot spring
The Yellowstone Park bison herd is the largest public herd of American bison in the United States. The relatively large bison populations are a concern for ranchers, who fear that the species can transmit bovine diseases to their domesticated cousins. In fact, about half of Yellowstone's bison have been exposed to brucellosis, a bacterial disease that came to North America with European cattle that may cause cattle to miscarry. The disease has little effect on park bison, and no reported case of transmission from wild bison to domestic livestock has been filed. However, the Animal and Plant Health Inspection Service (APHIS) has stated that bison are the "likely source" of the spread of the disease in cattle in Wyoming and North Dakota. Elk also carry the disease and are believed to have transmitted the infection to horses and cattle. Bison once numbered between 30 and 60 million individuals throughout North America, and Yellowstone remains one of their last strongholds. Their populations had increased from less than 50 in the park in 1902 to 4,000 by 2003. The Yellowstone Park bison herd reached a peak in 2005 with 4,900 animals. Despite a summer estimated population of 4,700 in 2007, the number dropped to 3,000 in 2008 after a harsh winter and controversial brucellosis management sending hundreds to slaughter. The Yellowstone Park bison herd is believed to be one of only four free roaming and genetically pure herds on public lands in North America. The other three herds are the Henry Mountains bison herd of Utah, at Wind Cave National Park in South Dakota and on Elk Island in Alberta.
Elk Mother Nursing Her Calf
To combat the perceived threat of brucellosis transmission to cattle, national park personnel regularly harass bison herds back into the park when they venture outside of the area's borders. During the winter of 1996–97, the bison herd was so large that 1,079 bison that had exited the park were shot or sent to slaughter. Animal rights activists argue that this is a cruel practice and that the possibility for disease transmission is not as great as some ranchers maintain. Ecologists point out that the bison are merely traveling to seasonal grazing areas that lie within the Greater Yellowstone Ecosystem that have been converted to cattle grazing, some of which are within National Forests and are leased to private ranchers. APHIS has stated that with vaccinations and other means, brucellosis can be eliminated from the bison and elk herds throughout Yellowstone.
A reintroduced northwestern wolf in Yellowstone National Park
Starting in 1914, in an effort to protect elk populations, the U.S. Congress appropriated funds to be used for the purposes of "destroying wolves, prairie dogs, and other animals injurious to agriculture and animal husbandry" on public lands. Park Service hunters carried out these orders, and by 1926 they had killed 136 wolves, and wolves were virtually eliminated from Yellowstone. Further exterminations continued until the National Park Service ended the practice in 1935. With the passing of the Endangered Species Act in 1973, the wolf was one of the first mammal species listed. After the wolves were extirpated from Yellowstone, the coyote then became the park's top canine predator. However, the coyote is not able to bring down large animals, and the result of this lack of a top predator on these populations was a marked increase in lame and sick megafauna.
Bison in Yellowstone National Park
By the 1990s, the Federal government had reversed its views on wolves. In a controversial decision by the U.S. Fish and Wildlife Service (which oversees threatened and endangered species), northwestern wolves, imported from Canada, were reintroduced into the park. Reintroduction efforts have been successful with populations remaining relatively stable. A survey conducted in 2005 reported that there were 13 wolf packs, totaling 118 individuals in Yellowstone and 326 in the entire ecosystem. These park figures were lower than those reported in 2004 but may be attributable to wolf migration to other nearby areas as suggested by the substantial increase in the Montana population during that interval. Almost all the wolves documented were descended from the 66 wolves reintroduced in 1995–96. The recovery of populations throughout the states of Wyoming, Montana and Idaho has been so successful that on February 27, 2008, the U.S. Fish and Wildlife Service removed the Northern Rocky Mountain wolf population from the endangered species list.
An estimated 600 grizzly bears live in the Greater Yellowstone Ecosystem, with more than half of the population living within Yellowstone. The grizzly is currently listed as a threatened species, however the U.S. Fish and Wildlife Service has announced that they intend to take it off the endangered species list for the Yellowstone region but will likely keep it listed in areas where it has not yet recovered fully. Opponents of delisting the grizzly are concerned that states might once again allow hunting and that better conservation measures need to be implemented to ensure a sustainable population. Black bears are common in the park and were a park symbol due to visitor interaction with the bears starting in 1910. Feeding and close contact with bears has not been permitted since the 1960s to reduce their desire for human foods. Yellowstone is one of the few places in the United States where black bears can be seen coexisting with grizzly bears. Black bear observations occur most often in the park's northern ranges and in the Bechler area which is in the park's southwestern corner.
Population figures for elk are in excess of 30,000—the largest population of any large mammal species in Yellowstone. The northern herd has decreased enormously since the mid‑1990s; this has been attributed to wolf predation and causal effects such as elk using more forested regions to evade predation, consequently making it harder for researchers to accurately count them. The northern herd migrates west into southwestern Montana in the winter. The southern herd migrates southward, and the majority of these elk winter on the National Elk Refuge, immediately southeast of Grand Teton National Park. The southern herd migration is the largest mammalian migration remaining in the U.S. outside of Alaska.
In 2003 the tracks of one female lynx and her cub were spotted and followed for over 2 miles (3.2 km). Fecal material and other evidence obtained were tested and confirmed to be those of a lynx. No visual confirmation was made, however. Lynx have not been seen in Yellowstone since 1998, though DNA taken from hair samples obtained in 2001 confirmed that lynx were at least transient to the park. Other less commonly seen mammals include the mountain lion and wolverine. The mountain lion has an estimated population of only 25 individuals parkwide. The wolverine is another rare park mammal, and accurate population figures for this species are not known. These uncommon and rare mammals provide insight into the health of protected lands such as Yellowstone and help managers make determinations as to how best to preserve habitats.
Eighteen species of fish live in Yellowstone, including the core range of the Yellowstone cutthroat trout—a fish highly sought by anglers. The Yellowstone cutthroat trout has faced several threats since the 1980s, including the suspected illegal introduction into Yellowstone Lake of lake trout, an invasive species which consume the smaller cutthroat trout. Although lake trout were established in Shoshone and Lewis lakes in the Snake River drainage from U.S. Government stocking operations in 1890, it was never officially introduced into the Yellowstone River drainage. The cutthroat trout has also faced an ongoing drought, as well as the accidental introduction of a parasite—whirling disease—which causes a terminal nervous system disease in younger fish. Since 2001, all native sport fish species caught in Yellowstone waterways are subject to a catch and release law. Yellowstone is also home to six species of reptiles, such as the painted turtle and Prairie rattlesnake, and four species of amphibians, including the Boreal Chorus Frog.
311 species of birds have been reported, almost half of which nest in Yellowstone. As of 1999, twenty-six pairs of nesting bald eagles have been documented. Extremely rare sightings of whooping cranes have been recorded, however only three examples of this species are known to live in the Rocky Mountains, out of 385 known worldwide. Other birds, considered to be species of special concern because of their rarity in Yellowstone, include the common loon, harlequin duck, osprey, peregrine falcon and the trumpeter swan.
As wildfire is a natural part of most ecosystems, plants that are indigenous to Yellowstone have adapted in a variety of ways. Douglas-fir have a thick bark which protects the inner section of the tree from most fires. Lodgepole Pines —the most common tree species in the park— generally have cones that are only opened by the heat of fire. Their seeds are held in place by a tough resin, and fire assists in melting the resin, allowing the seeds to disperse. Fire clears out dead and downed wood, providing fewer obstacles for lodgepole pines to flourish. Subalpine Fir, Engelmann Spruce, Whitebark Pine, and other species tend to grow in colder and moister areas, where fire is less likely to occur. Aspen trees sprout new growth from their roots, and even if a severe fire kills the tree above ground, the roots often survive unharmed because they are insulated from the heat by soil. The National Park Service estimates that in natural conditions, grasslands in Yellowstone burned an average of every 20 to 25 years, while forests in the park would experience fire about every 300 years.
About thirty-five natural forest fires are ignited each year by lightning, while another six to ten are started by people— in most cases by accident. Yellowstone National Park has three fire lookout towers, each staffed by trained fire fighters. The easiest one to reach is atop Mount Washburn, though it is closed to the public. The park also monitors fire from the air and relies on visitor reports of smoke and/or flames. Fire towers are staffed almost continuously from late June to mid-September— the primary fire season. Fires burn with the greatest intensity in the late afternoon and evening. Few fires burn more than 100 acres (40 ha), and the vast majority of fires reach only a little over an acre (0.5 ha) before they burn themselves out. Fire management focuses on monitoring dead and down wood quantities, soil and tree moisture, and the weather, to determine those areas most vulnerable to fire should one ignite. Current policy is to suppress all human caused fires and to evaluate natural fires, examining the benefit or detriment they may pose on the ecosystem. If a fire is considered to be an immediate threat to people and structures, or will burn out of control, then fire suppression is performed.
In an effort to minimize the chances of out of control fires and threats to people and structures, park employees do more than just monitor the potential for fire. Controlled burns are prescribed fires which are deliberately started to remove dead timber under conditions which allow fire fighters an opportunity to carefully control where and how much wood is consumed. Natural fires are sometimes considered prescribed fires if they are left to burn. In Yellowstone, unlike some other parks, there have been very few fires deliberately started by employees as prescribed burns. However, over the last 30 years, over 300 natural fires have been allowed to burn naturally. In addition, fire fighters remove dead and down wood and other hazards from areas where they will be a potential fire threat to lives and property, reducing the chances of fire danger in these areas. Fire monitors also regulate fire through educational services to the public and have been known to temporarily ban campfires from campgrounds during periods of high fire danger. The common notion in early United States land management policies was that all forest fires were bad. Fire was seen as a purely destructive force and there was little understanding that it was an integral part of the ecosystem. Consequently, until the 1970s, when a better understanding of wildfire was developed, all fires were suppressed. This led to an increase in dead and dying forests, which would later provide the fuel load for fires that would be much harder, and in some cases, impossible to control. Fire Management Plans were implemented, detailing that natural fires should be allowed to burn if they posed no immediate threat to lives and property.
1988 started with a wet spring season although by summer, drought began moving in throughout the northern Rockies, creating the driest year on record to that point. Grasses and plants which grew well in the early summer from the abundant spring moisture produced plenty of grass, which soon turned to dry tinder. The National Park Service began firefighting efforts to keep the fires under control, but the extreme drought made suppression difficult. Between July 15 and 21, 1988, fires quickly spread from 8,500 acres (3,400 ha; 13.3 sq mi) throughout the entire Yellowstone region, which included areas outside the park, to 99,000 acres (40,000 ha; 155 sq mi) on the park land alone. By the end of the month, the fires were out of control. Large fires burned together, and on August 20, 1988, the single worst day of the fires, more than 150,000 acres (61,000 ha; 230 sq mi) were consumed. Seven large fires were responsible for 95% of the 793,000 acres (321,000 ha; 1,239 sq mi) that were burned over the next couple of months. A total of 25,000 firefighters and U.S. military forces participated in the suppression efforts, at a cost of 120 million dollars. By the time winter brought snow that helped extinguish the last flames, the fires had destroyed 67 structures and caused several million dollars in damage. Though no civilian lives were lost, two personnel associated with the firefighting efforts were killed.
Contrary to media reports and speculation at the time, the fires killed very few park animals— surveys indicated that only about 345 elk (of an estimated 40,000–50,000), 36 deer, 12 moose, 6 black bears, and 9 bison had perished. Changes in fire management policies were implemented by land management agencies throughout the United States, based on knowledge gained from the 1988 fires and the evaluation of scientists and experts from various fields. By 1992, Yellowstone had adopted a new fire management plan which observed stricter guidelines for the management of natural fires.
from Wikipedia
The San Pedro riparian area, containing about 40 miles of the upper San Pedro River, was designated by Congress as a National Conservation Area on November 18, 1988. The primary purpose for the designation is to protect and enhance the desert riparian ecosystem, a rare remnant of what was once an extensive network of similar riparian systems throughout the Southwest.
Many recreational opportunities are available within the NCA. Murray Springs Clovis Site, a significant archaeological site contains an undisturbed stratigraphic record of the past 40,000 years. Excavations were conducted by the University of Arizona from 1966 to 1971. People first arrived in this area 11,000 years ago. They belonged to what we now call the Clovis Culture and were the earliest known people to have inhabited North America. Named after the distinctive and beautifully crafted Clovis spear points they made, they were expert hunters of the large mammals of the last Ice Age. An interpretive trail leads visitors through the site. From Sierra Vista, take State Highway 90 east 6 miles to Monson Road. Turn left, and go about 1.2 miles to the signed turnoff to Murray Springs. The access road is located on the right.
The Spanish Presidio Santa Cruz de Terrenate is the most intact remaining example of a once-extensive network of similar presidios. These fortresses marked the northern extension of New Spain into the New World. Only a stone foundation and a few remaining adobe wall remnants mark the location of an isolated and dangerous military station. From Fairbank on Highway 82, drive approximately 2 miles west on Highway 82, turn right on the Kellar Ranch Road and travel approximately 3 miles to the trailhead. Hike about 2 miles to the ruins and interpretive displays.
The San Pedro House, located 9 miles east of Sierra Vista on State Highway 90, is a popular trailhead for birdwatchers, hikers, and mountain bikers. The Friends of San Pedro operate a bookstore and information center.
Photo by Bob Wick, BLM.
On September 01, 2007, the most ambitious program yet to resettle Mumbai's ‘Dharavi’ slum entered an active phase, promising to free the city of the biggest embarrassment in its quest to become a global business destination. An Indian government agency began evaluating "prequalification" bids submitted by developers across the world to build housing and social infrastructure to resettle the slum's residents. About 57,000 families with about 340,000 people and hundreds of small businesses currently occupy the 535-acre stretch in mostly illegal structures that have multiplied over decades.
The new "ecosystem" that will replace the slum was conceived by Mr. Mukesh Mehta, a U.S.-trained architect whose firm is the project's manager. Mr. Mehta has become India's pre-eminent slum-rehab guru: He has taken on a handful of similar projects in other cities including Hyderabad and Ahmadabad, and he wants to replicate his model of replacing slums with sustainable ecosystems across the country and in other emerging economies. Mr. Mehta's firm, M. M. Project Consultants, where he is chairman, is also overseeing a project to resettle and rehabilitate between 60,000 and 80,000 families in a slum stretch near Mumbai's international airport, in order to make room for a project already underway to upgrade and expand infrastructure there. India Knowledge@Wharton spoke to Mr. Mehta and Mr. Sanjay Reddy, Chief Executive Officer of Mumbai International Airport (Pvt) Ltd., about the impact these projects will have and any potential challenges that lie ahead.
For the ‘Dharavi’ rehabilitation, 26 consortia comprising 78 companies have filed preliminary bids. The project's total cost is estimated at Rs. 9,250 crore ($2.3 billion), covering housing, civic infrastructure and amenities. It will be distributed across five contracts valued at between Rs. 1,000 crore ($250 million) and Rs. 2,500 crore ($625 million) each. Winning bidders will pay a "premium" to the government in exchange for the development rights. Mr. Mehta says the state government could collect premiums totalling as much as Rs. 4,000 crore ($1 billion), which will come out of the developers' profits.
Mr. Mehta says bidders that meet prequalification criteria will be short-listed by the end of September, and then asked to submit detailed proposals. By early December, he expects to announce the successful bidders, and ground should be broken by January of next year.
Public-Private Partnerships
Mr. Mehta's model is designed to cross-subsidize free housing and infrastructure with for-sale housing and commercial space. Under the plan, developers will provide free housing of 225 sq. ft. to each of 57,000 families. These would be one-room studio apartments with an attached bath and kitchen, plus related utilities and amenities including schools, colleges, hospitals and parks. The developers will offset their costs with for-sale housing and commercial space at market rates. Some of that will come from the market prices residents and commercial establishments like shops will be required to pay for space greater than 225-sq.-ft. A portion of the developers' revenues from these for-sale properties will accrue to the government as a premium.
"All the world's eyes are on Dharavi," says Mr. Mehta about the bidding interest the project has generated so far. The bidders include many of India's major industrial groups such as Reliance; engineering and construction firm Larsen & Toubro; and real estate developers DLF, Hiranandani Constructions, the K. Raheja Group, Tata Housing and Mahindra Gesco. Several foreign companies have also shown interest in bidding, including real estate developer Hines of Houston, Tex.; Ascendas and Capitaland of Singapore; and Emaar Properties of Dubai.
Mr. Mehta acknowledges that the project's schedule could be thrown off course by legal squabbles, bureaucratic delays, disputes between and with slum dwellers, and any opposition from local politicians, underworld slumlords and other interested parties. He says that the project's very economic and social logic will hopefully overwhelm critics, and he routinely addresses local meetings to garner support. He adds that the courts should play a supportive role, because they "have understood the slum rehabilitation scheme and are aware that this has been going on for 10 years."
A City within a City
Mumbai's slums hold 55% of the city's 12 million residents, or 1.2 million families in 1,126 slum pockets, as a survey by Mr. Mehta's firm revealed. ‘Dharavi’ is the most high profile for a variety of reasons, including its prime location straddling the city's eastern and western corridors, flourishing small and medium businesses, a reputation for spawning crime, and chronic unsanitary conditions on which the city's municipality appears to have given up.
"This is now my life's work," says Mr. Mehta, 56, who was born into a wealthy family that ran steel mills and other businesses in India's Gujarat state. ‘Dharavi’ was far from his mind when he graduated with a degree in architecture in India and then left the country to obtain his master's degree at the Pratt Institute in New York City in 1984. While in the U.S., he developed expensive, custom homes in Long Island's affluent Nassau County. Until 1997, he shuttled between the U.S. and India while running a few businesses, but eventually closed them all down to focus on his ‘Dharavi’ project.
Mr. Mehta literally stumbled upon ‘Dharavi’ when he returned from the U.S. He says he was galvanized by the combination of filth, squalor, poverty, enterprise and the locked potential of the slum's prime location, and began to work on a rehabilitation plan. He set up his offices in ‘Dharavi’ "to understand who I am dealing with, and interact at the grassroots level with the slum dwellers."
Perversely, ‘Dharavi’ is also emblematic of the survival instincts of Mumbai's continually expanding population in the face of infrastructure unable to keep pace. About 300 new immigrant families are said to enter the city as permanent residents every day. Meanwhile, the slum residents have started hundreds of small businesses in pottery, leather craft, plastics and metal recycling, cottage-industry electronics and garments. "Show me a single beggar in Dharavi," says Mr. Mehta, underscoring his point that the suburb has the potential to transform itself from an eyesore into an economic engine for the city.
Government Planning Shortcomings
Over the years, successive governments have attempted to rehabilitate Dharavi's slum dwellers, and it became one of the first targets of non-government organizations looking for suitable projects. Mr. Mehta felt many of these went about the task in a piecemeal fashion. He drafted an alternative plan that he pitched to the state government in 1997.
Mr. Mehta says the government's plan at that time was "brilliant," in that it sought to use public-private partnerships to extract value from the land on which the slum dwellers resided, by allowing for-sale development options. But it suffered from some fundamental shortcomings, he notes. Most important of all was the failure to recognize the organic and haphazard ways in which slums proliferate into every available area: Lacking contiguous settlements or rectangular plots, they don't allow for conventional master planning.
Dharavi's redevelopment occurred only in those pockets where developers were able to secure the required consent from residents in any slum (70%). But because these pockets were typically mapped out in irregular plots and in what continued to be a slum neighbourhood, the for-sale housing went for low prices. The government, for the most part, kept a hands-off approach after laying down project specifications.
The poorly staffed government machinery was unable to enforce the project specifications on construction quality, and rampant corruption made things worse, says Mr. Mehta. The roughly 100,000 homes that have been built in this manner so far "will become vertical slums," he says. Moreover, he adds, development under the government's plan is not sustainable. "Unless I improve the ability of the slum dwellers to generate income and live the modified lifestyle, they cannot maintain their new housing."
Mr. Mehta proposed a master plan for the entire slum – an integrated, sustainable development approach called HIKES (health, income, knowledge, environment and socio-cultural development). Mr. Mehta says the HIKES approach allows slum dwellers "to maximize their opportunities and be respected for who they are" in terms of their own achievements. The government gave the plan enthusiastic support.
"With HIKES, the chance of [slum residents] leading a sustainable, improved life is greater than you would get by providing just housing," says Mr. Mehta. "This is the mistake that all the developing countries are making – China, Mexico, Brazil, South Africa, Turkey and Malaysia. They are thinking of slum rehabilitation as a housing issue. Housing is only one part of it; the larger part is human resources."
Leveraging Location
‘Dharavi’ has several advantages in terms of its location. It is the only Mumbai suburb with connections to all three of the city's commuter rail corridors (Western, Central and Harbour lines). It is also less than two miles from the airport, and a third of a mile from the new Bandra-Kurla commercial complex.
The integrated development approach and the prospect of a slum-free suburb emerging in ‘Dharavi’ made it easier to market the project to businesses, academic establishments and professional associations. Mr. Mehta lists a string of collaborations that have been struck so far:
A collaboration with the All India Association of Day Surgeons ensures that in exchange for space to house day surgery polyclinics, its member doctors would provide free or subsidized services to slum residents.
Alliances with primary and secondary schools to set up facilities in ‘Dharavi.’ For every free school an educational institution puts up, it will get space for a full fee-paying school, provided the quality of education is the same at both schools.
An agreement with the National Institute of Design (NID) in Ahmadabad to allow for Dharavi's leather crafts and pottery industries to turn out designer brands. "So far they are only imitating the Guccis and the Pierre Cardins and the Christian Diors of the world," says Mr. Mehta. "NID has agreed to upgrade the skills of the leather craftsmen and make ceramists of the potters." A few brand-name retail chains like Metro Shoes and Hi-Design have agreed to market the leather crafts produced through such ventures. Mr. Mehta sees similar possibilities in a range of other industries, from garments to toys and food products.
A provisional agreement with the Gems & Jewellery Export Promotion Council for its members to set up 300 factories and hire 250 people for each, creating a total of 75,000 jobs with an average annual income of Rs. 100,000 ($2,500). Mr. Mehta says this would be a big income generator even if only a third of those employees are hired from ’Dharavi.’ He says this initiative is estimated to generate exports worth $1.5 billion annually.
A project to create a golf driving range in the middle of ‘Dharavi’ has gotten traction among some big businesses such as the Reliance Group, says Mr. Mehta, who argues it would prevent encroachment of vacant land and draw the wealthy into ‘Dharavi.’ Another of Mr. Mehta's ideas is to set up a cricket museum in the suburb. He sees both possibilities as efforts to help integrate the slum population with mainstream middle- and upper-income groups.
Mr. Mehta claims the revised regulations for sewerage, storm water drainage and other utilities are in line with international standards. "We have looked at eco-housing criteria. We're talking about alternative sources of energy, solid waste recycling and management, recycling water, rain water harvesting, energy conservation and even issues related to global warming, at the infrastructure level," he says.
Further, Mr. Mehta's firm has also rewritten much of the earlier regulations that he felt held site planning and construction norms to low compliance requirements. The mandatory space required between two buildings has been doubled from the earlier level to 20 ft.; similarly, open space requirements, as a proportion of construction area, was increased from 8% to 15% of the developed area.
Under the earlier regime, homes could not get "even light and air ventilation properly," Mr. Mehta says. Some developers "cheated on the 8% open space norm by providing 1% here, 3% somewhere else and 4% in a third place, with the result that you don't even get one maidan [Hindi for "playground"]," he adds. Slum dwellers needed more open space than others, he argues, "because their per-capita housing space is less and the density is higher."
Will people used to the ways of a slum adopt a new outlook about upkeep and keep their surroundings clean? Mr. Mehta isn't taking chances: Deals are in place for all providers of utilities and services, including plumbing, elevators and exterior paint to maintain and undertake repairs free of charge for the first 15 years. Developers, too, will be required to maintain the buildings they erect for 15 years.
Mr. Mehta doesn't see slum proliferation through encroachment as a recurring problem in the areas that will be developed. The residents, as owners of their new dwellings, will prevent that, he says. "If it is your fiefdom or your area you will not let anybody come in." The resettled families will have an initial 30-year lease, with automatic renewal for another 30 years. For each home they build, developers will put Rs. 20,000 ($400) in an escrow account to finance its upkeep; the homeowner will meet costs beyond that. All that comes with a caveat: residents cannot sell their homes for the first 10 years.
Mr. Mehta says his firm's responsibility for managing the project runs "until the last slum dweller is re-housed." That may take about seven years from now, he says. His firm currently has 68 employees; he expects that to grow to more than 350 by the time construction starts in December.
A Different Set of Challenges
The public-private partnership model is also a key driver at the other big slum resettlement project on Mr. Mehta's plate, near the city's international airport. At an estimated cost of Rs.7,200 crore ($1.75 billion), the expansion and upgrade of Mumbai's international airport is among the largest private-sector infrastructure projects underway in the country. Plans are to double both annual passenger capacity to 40 million annually and cargo capacity to 1 million tons.
But to make way for that expansion, the project's promoter – Mumbai International Airport (Pvt) Ltd. (MIAL) – has to clear 276 acres in the airport's vicinity. That stretch includes a slum that houses between 60,000 and 80,000 families. The plans are to resettle them into new housing at another location within a six-mile radius. "They have their social and financial sustenance in this locality, so there would be huge resistance if we try to move them too far out," says Mr. Sanjay Reddy, Chief Executive Officer of MIAL, whose family-run GVK Group is a 74% joint venture partner with the public sector Airports Authority of India (26%).
Mr. Reddy's firm has already identified the lots where it plans to build the new housing, and is in the process of selecting a developer. "We took over the airport's operations about a year ago and are doing many things in parallel," he says. "The first is to continue running the existing facility. Second, we are simultaneously working on improving the operations. The third leg of the project is to redevelop the slum land in the airport area."
But Mr. Mehta notes that having to move people out of the area will likely make for a more challenging project. "Slums are really a vote bank for the political parties," he says. "Even if you can convince the slum dwellers to move and give them a better lifestyle, the political parties obstruct it because they lose their votes. Local politicians don't want to see a vote base they have cultivated for many years suddenly vanish."
Mr. Reddy says MIAL has so far been successful in persuading politicians to cooperate. "We have gotten a lot of support form political, bureaucratic and government officials," he says. "We cannot do anything without them." However, he adds that securing records related to the land and its dwellers has been "a messy affair."
The airport slum resettlement project shares many of the features of the ‘Dharavi’ model. Mr. Mehta says the effort here is also to have an integrated, sustainable development approach with public-private partnerships. "Here, too, we would work for a similar kind of township approach, and maybe even generate opportunities for income generation with skill development and capacity building," he says.
(Courtesy Knowledge@Wharton Network managed by the Wharton School, University of Pennsylvania – U.S.A.)
Related web links :
‘Dharavi’ – largest slum in Asia
‘Dharavi’ – Life in a slum
news.bbc.co.uk/2/shared/spl/hi/world/06/dharavi_slum/html...
As Mumbai booms, the poor of its notorious ‘Dharavi’ slum find themselves living in some of India's hottest real estate
www7.nationalgeographic.com/ngm/0705/feature3/
Mumbai slum dwellers fight development plan
news.bbc.co.uk/2/hi/business/6970800.stm
State makes more squatters eligible for ‘Dharavi’ rehabilitation
economictimes.indiatimes.com/News/PoliticsNation/State_ma...
Reference :
Mike Davis on a planet of slums
www.socialistworker.co.uk/article.php?article_id=9073
The growth of the global slums
www.socialistworker.co.uk/article.php?article_id=9074
Urban population to overtake country dwellers for first time
www.guardian.co.uk/international/story/0,,1798774,00.html
PHOTO : ‘Dharavi’ slum, Mumbai. Photo with courtesy of National Geographic Magazine Interactive Edition published by the National Geographic Society, U.S.A.
Source of Photo :
www7.nationalgeographic.com/ngm/0705/feature3/
Source of Main article :
knowledge.wharton.upenn.edu/india/article.cfm?articleid=4223
The San Pedro riparian area, containing about 40 miles of the upper San Pedro River, was designated by Congress as a National Conservation Area on November 18, 1988. The primary purpose for the designation is to protect and enhance the desert riparian ecosystem, a rare remnant of what was once an extensive network of similar riparian systems throughout the Southwest.
Many recreational opportunities are available within the NCA. Murray Springs Clovis Site, a significant archaeological site contains an undisturbed stratigraphic record of the past 40,000 years. Excavations were conducted by the University of Arizona from 1966 to 1971. People first arrived in this area 11,000 years ago. They belonged to what we now call the Clovis Culture and were the earliest known people to have inhabited North America. Named after the distinctive and beautifully crafted Clovis spear points they made, they were expert hunters of the large mammals of the last Ice Age. An interpretive trail leads visitors through the site. From Sierra Vista, take State Highway 90 east 6 miles to Monson Road. Turn left, and go about 1.2 miles to the signed turnoff to Murray Springs. The access road is located on the right.
The Spanish Presidio Santa Cruz de Terrenate is the most intact remaining example of a once-extensive network of similar presidios. These fortresses marked the northern extension of New Spain into the New World. Only a stone foundation and a few remaining adobe wall remnants mark the location of an isolated and dangerous military station. From Fairbank on Highway 82, drive approximately 2 miles west on Highway 82, turn right on the Kellar Ranch Road and travel approximately 3 miles to the trailhead. Hike about 2 miles to the ruins and interpretive displays.
The San Pedro House, located 9 miles east of Sierra Vista on State Highway 90, is a popular trailhead for birdwatchers, hikers, and mountain bikers. The Friends of San Pedro operate a bookstore and information center.
Photo by Bob Wick, BLM.
In the case of forest cover change, the studies refer to the period 1980–2000 and are based on national statistics, remote sensing, and to a limited degree expert opinion. In the case of land cover change resulting from degradation in drylands (desertification), the period is unspecified but inferred to be within the last half-century, and the major study was entirely based on expert opinion, with associated low certainty.
For any form of publication, please include the link to this page:
This photo has been graciously provided to be used in the GRID-Arendal resources library by: Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
A student goes to school wearing a mask to protect him from the smoke that blankets the city of Palangka Raya, Central Kalimantan.
Photo by Aulia Erlangga/CIFOR
If you use one of our photos, please credit it accordingly and let us know. You can reach us through our Flickr account or at: cifor-mediainfo@cgiar.org and m.edliadi@cgiar.org
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Aambyvalley Rd.,Off Lonavala,Mah.,India
restricted to mainly peninsular India.
Photo Credit:Vaibhav G.
The San Pedro riparian area, containing about 40 miles of the upper San Pedro River, was designated by Congress as a National Conservation Area on November 18, 1988. The primary purpose for the designation is to protect and enhance the desert riparian ecosystem, a rare remnant of what was once an extensive network of similar riparian systems throughout the Southwest.
Many recreational opportunities are available within the NCA. Murray Springs Clovis Site, a significant archaeological site contains an undisturbed stratigraphic record of the past 40,000 years. Excavations were conducted by the University of Arizona from 1966 to 1971. People first arrived in this area 11,000 years ago. They belonged to what we now call the Clovis Culture and were the earliest known people to have inhabited North America. Named after the distinctive and beautifully crafted Clovis spear points they made, they were expert hunters of the large mammals of the last Ice Age. An interpretive trail leads visitors through the site. From Sierra Vista, take State Highway 90 east 6 miles to Monson Road. Turn left, and go about 1.2 miles to the signed turnoff to Murray Springs. The access road is located on the right.
The Spanish Presidio Santa Cruz de Terrenate is the most intact remaining example of a once-extensive network of similar presidios. These fortresses marked the northern extension of New Spain into the New World. Only a stone foundation and a few remaining adobe wall remnants mark the location of an isolated and dangerous military station. From Fairbank on Highway 82, drive approximately 2 miles west on Highway 82, turn right on the Kellar Ranch Road and travel approximately 3 miles to the trailhead. Hike about 2 miles to the ruins and interpretive displays.
The San Pedro House, located 9 miles east of Sierra Vista on State Highway 90, is a popular trailhead for birdwatchers, hikers, and mountain bikers. The Friends of San Pedro operate a bookstore and information center.
Photo by Bob Wick, BLM.