Microlife: Fish Creek Park - Vaucheria from shallow marsh

Jun 7-9, 2009

This was taken from a shallow marshy spot at the base of a hill. There were many floating green clumps, some containing moss and others almost entirely coarse, tangled algae, which proved to be Vaucheria. The whole surface of the water was covered in jumping little springtails, and there were many large fly larvae at the bottom.

There were round germinating Vaucheria nearly everwhere, but otherwise the sample was dominated by ostracods. There were also several copepod and midge larvae, along with some other arthropods and worms. There were only a few protozoa, mainly spirotrichs on the algae and small sessilids on the algae and ostracods.

↬ Thanks to zoologist Dr. Alexander Kostenko for the identification of Phaenocora.

Kingdom Plantae
…Phylum Chlorophyta – green algae

Chlorophyte
Chlorophyta - about 25 µm wide
Closterium
Closterium - about 665 µm

…Phylum Bryophyta – mosses & allies

Moss
Bryophyta - stem about 120 µm wide

Kingdom Chromista
…Phylum Ciliophora – ciliates

Spirotrichs
Spirotrichea - up to 55 µm
Stylonychia
Stylonychia - body about 135 µm
Spirotrichs
Spirotrichea - about 110, 95 µm
Phyllopharyngea
Phyllopharyngea - about 80 µm
Vorticella
Vorticella - body about 30 µm

…Phylum Ochrophyta – heterokont algae

Vaucheria
Vaucheria - filament about 65-75 µm wide
Vaucheria
Vaucheria - sphere about 100 µm wide

Kingdom Protozoa
…Phylum Amoebozoa

Arcella shell
Arcella shell - about 55 µm

Kingdom Animalia
…Phylum Platyhelminthes – flatworms

Phaenocora
Phaenocora - about 2.3 mm

…Phylum Nematoda – roundworms

Roundworm
Nematoda - about 1.5 mm

…Phylum Arthropoda – insects, crustaceans & allies

Water mite
Acariformes - body about 660 µm
Podocopid
Podocopida - body about 485 µm
Podocopid
Podocopida - body about 690 µm
Copepod larva
Copepoda, larva - body about 180 µm
Copepod
Copepoda - body about 300 µm
Springtail
Collembola - body about 1.0 mm
Midge larva
Chironomidae, larva - body about 535 µm
Diving beetle larva
Dytiscidae, larva - body about 5.8 mm

Uncertain objects

Unknown
Straight filaments - about 14 µm wide