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View allAll Photos Tagged Keystone
means it has a larger influence on its environment than its abundance. It plays key role in maintaining the population of other animals in an ecological community.
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Black Tailed Prairie Dog
Keystone species are those whose presence and role in an ecosystem is paramount to the point that they have a disproportionate effect on other organisms within the system. Ironically, though they have a lasting effect on the ecosystem, they are the least in count.
Who knew...they all matter!
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He's even cuter in Large!
A sweet-looking pair of CSX SD40-2s descend the West Slope of Sand Patch Grade on a fine Winter afternoon.
Keystone Dam is located on the Arkansas River near Sand Springs, Oklahoma. Keystone Lake, above the dam is fed by the Arkansas River and the Cimarron River. Started in 1956 and completed in 1964, it provides electrical power and flood control for the Tulsa area.
A quick run from Otis got them over to Pine Yard for work with no time to squeeze out another shot. Getting their train back together and departing, there was only one more place I needed to get the PRR with the last of the late day light. I did, but barely -- just as the Arcelor Security guy said it was time to leave! The mills of East Chicago, Indiana.
The Norfolk Southern business train runs left-handed on the former N&W Pocahontas Division mainline. The immaculate covered wagons started the morning in Norfolk, Virginia and will tie up for the day in a few hours at the division point of Williamson, West Virginia. The Coca-Cola lettered building is just one of the many landmarks on the famed Elkhorn Grade in McDowell County West Virginia.
Keeler, Ca.
Come snow or surf, this guy is ready to go. The will to do art is unconquered even in less than ideal circumstances.
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D3200
Tokina 11-16mm DX Pro II
Train M332 battles Sand Patch Grade passing underneath the former Western Maryland at Keystone, Pennsylvania with CSX’s newest CM44s leading the way wearing commemorative America250 paint.
As daylight begins to filter through the fog, an NS coal train rumbles through Keystone, WV, assisted by the Lehigh Valley heritage unit on the rear.
Deep gorge near Valdez Alaska, cut in the slate rock by the Lowe River.
In 2014 heavy snow (typical of the area) and avalanches completely filled this gorge in minutes, luckily no one was on the road at the time. The Lowe River was also blocked, and a new term was coined for the lake that flooded upriver from the 1500 foot long x 100 foot deep avalanche... a 'Damalanche.'
Light sleet falls on a chilly December afternoon as the Pennsylvania Railroad heritage unit pulls Norfolk Southern train 21M through downtown Harrisburg.
Dash 9 #9275 is in charge of an empty grainer heading west along the Pokey in Keystone, WV. 9275 has since been rebuilt into AC44C6M #4557 in February of 2022.
4-30-2020