Identificaciones de dgborin

Magnification of photos: 100×, 100×, 400×, 400×, 400×, 400×, 400×, 400×, 400×, 400×, 400×, 400×, 400×
Habitat: muddy water from the edge of a shallow pond, collected with Ceratophyllum sp.
Several individuals present within sample. Using stage micrometer for calibration, cells estimated to range from 181 µm long and 28 µm wide to 266 µm long and 44 µm wide.

Magnification of photos: 100×, 400×, 400×, 400×, 400×
Habitat: muddy water from the edge of a shallow pond. Associated plants: Boltonia asteroides
Using stage micrometer for calibration, estimated to be about 450 µm long and 24 µm wide.

Magnification of all photos: 400×
Habitat: water and debris squeezed out of an aquatic plant in a pond.
Several individuals present within sample. Using stage micrometer for calibration, these individuals estimated to be about 202 µm long and 6 µm at the isthmus, and 193 µm long and 6 µm at the isthmus, respectively.

Magnification of photos: 400×, 400×, 400×, 400×, 400×, 400×, 100×
Habitat: muddy water from the border of a swamp lining Creve Coeur Lake, a large oxbow lake. Associated plants: Cephalanthus occidentalis
Multiple colonies present in sample. Using stage micrometer for calibration, individual cells estimated to be about 5-5.5 µm by 4-4.5 µm.

Magnification of all photos: 1000× (oil immersion)
Habitat: a stagnant portion of a stream feeding into a pond, with lots of decaying leaves.
Using stage micrometer for calibration, individual cells estimated to be about 2.7 µm by 2 µm.

Magnification of photos: 100×, 400×, 400×, 400×, 400×, 400×, 400×
Habitat: A dried-up, stagnant portion of the River des Peres, associated with Hydrodictyon reticulatum.
Multiple cells present in the sample (one live cell and one empty cell wall pictured). Using stage micrometer for calibration, cell estimated to be about 890 µm long and 70 µm wide.