View allAll Photos Tagged algae
Schmitz
salal leaf
KOH
about 500u diam
parasitic algae are not the norm. The only species that is common in the United States is Cephaleuros virescens. It causes a disease called algal leaf spot - hgic.clemson.edu/factsheet/algal-leaf-spot/
my lichen photos by genus - www.flickr.com/photos/29750062@N06/collections/7215762439...
my photos arranged by subject, e.g. mountains - www.flickr.com/photos/29750062@N06/collections
The green patches on the bottom of the Little Patuxent River is due to a Blue-green algae (Oscillatoria sp.). David W. Force Park, Maryland.
A filamentous alga, three cells of the colonial diatom Melosira, and a Cyanobacterial filament on the left. Cells and chloroplasts are clearly visible inside the cell walls of the alga. Photomicrograph taken with a Coolpix 885 at 3x zoom, using an Olympus microscope equipped with Hoffman Modulation Contrast optics, oil immersion at 1,000x magnification.
09.08.09 - Bacteria and algae found in the run-off channels of the Mammoth Hot Springs in Yellowstone National Park
Algae from pond water. Photo taken with Zeiss PMII scope 16x plan objective and Canon EOS 60D camera equipped with Zeiss 47 60 10 intermediate tube and Leitz 4x projection lens. Modified brighfield. May be Closterium
Several species of red algae found at the base of a kelp holdfast
[OPRD_Hillmann.L_081010_RedAlgaeClose]
Algae Closterium from pond water. Nikon S-Kt pol. Moticam 2300 camera, 20x Nikon plan objective. Modified brighfield setup.
this is a tweaked picture of the algae blooms, but they did actually look this bright and green in the sunlight. the camera captured them less vividly than they actually looked.
Fossiliferous limestone with flint in the Pennsylvanian of Ohio, USA.
Black areas with yellowish-gray weathering rind = flint
Lighter-colored areas = limestone
The Pottsville Group is a Pennsylvanian-aged cyclothemic succession containing nonmarine shales, marine shales, siltstones, sandstones, coals, marine limestones, and chert ("flint"). The lower Pottsville dates to the late Early Pennsylvanian. The upper part dates to the early Middle Pennsylvanian. The Lower-Middle Pennsylvanian boundary is apparently somewhere near the Boggs Limestone horizon (?).
The Upper Mercer Flint is a moderately laterally persistent chert horizon in the Pennsylvanian of eastern Ohio, USA. It is often black-colored but can be dark bluish to bluish-black colored as well (the latter colors are referred to as "Nellie Blue Flint"). Upper Mercer Flint has whitish-colored fossils and fossil fragments that include fusulinid foraminifera, crinoid ossicles, and other Late Paleozoic normal marine fossils. Apparent phylloidal algae can also be present as squiggly lines.
This chert horizon is actually a chertified fossiliferous limestone. Non-chertified limestone is frequently present, although minor in volume. Limestone usually occurs along the outside portions of chert masses, but also in relatively small patches within the chert.
In places, the Upper Mercer Flint/Limestone horizon is missing, usually removed by paleoerosion.
American Indians sometimes used Upper Mercer Flint to make arrowheads and spear points and knife blades. "Flint Ridge Flint" (= Vanport Flint) was the most desirable source rock for these objects, but other chert horizons also attracted attention.
Stratigraphy: Upper Mercer Member, Pottsville Group, lower Atokan Stage, lower Middle Pennsylvanian
Locality: Rock Cut railroad cut - outcrop & talus along the Ohio Central Railroad tracks (west of milepost 134), ~southwest of Copeland Island & south-southeast of the town of Dresden, northern Muskingum County, eastern Ohio, USA (~vicinity of 40° 04’ 24.41” North latitude, ~81° 59’ 11.25” West longitude)