Microlife: Glenmore Reservoir - Floating plants

May 7-8, 2009
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This was taken from the shore of Glenmore Reservoir, where some floating plant fragments had collected. These were covered in sticky black ephippia, and on examination some began releasing small Daphnia in eggs. By the next morning there were active Daphnia throughout the sample, as well as a larger cyclopoid and some midge larvae.

Initially there were many algae throughout the sample, especially Dinobryon, Synura, and pointed dinoflagellates, but most were gone the next day. A variety of ciliates were hidden around the plants and ephippia but were generally difficult to observe. There were also some sessilids on the cyclopoid and near the bottom.

Kingdom Plantae
…Phylum Chlorophyta – green algae

Pseudopediastrum
Pseudopediastrum - about 30 µm
Mougoetia
Mougeotia - about 25 µm wide

…Phylum Tracheophyta – vascular plants

Detached stoma?
Tracheophyta, detached stoma? - about 95 µm

Kingdom Chromista
…Phylum Ciliophora – ciliates

Stentor
Stentor - about 295 µm
Spirotrich
Spirotrichea - about 65 µm
Spirotrich
Spirotrichea - about 110 µm
Ciliate
Ciliophora - about 85 µm
Epistylis
Epistylis - about 25 µm wide
Vorticella
Vorticella - body about 45 µm
Vorticellid
Vorticellidae - body about 125 µm

…Phylum Miozoa

Dinoflagellate
Peridinea - about 40 µm

…Phylum Ochrophyta – heterokont algae

Synura
Synura - colony about 60 µm
Chrysophyte
Chrysophyceae - colony about 80 µm
Dinobryon
Dinobryon - cells about 20 µm

Kingdom Animalia
…Phylum Nematoda – roundworms

Roundworm
Nematoda - about 1.4 mm

…Phylum Arthropoda

Cyclopoid
Cyclopoida - body about 1.1 mm
Copepod larva
Copepoda, larva - body about 135 µm
Daphnia
Daphnia - body about 710 µm
Daphnia
Daphnia - bodies about 725, 655 µm
Daphnia in egg
Daphnia, in egg - body about 525 µm
Daphnia ephippium
Daphnia, ephippium - main case about 1.3 mm