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| High elevation mountain lakes characterized by simple faunas and short growing seasons. They vary greatly in their faunal composition depending on their depth, substrate, and fish populations. | ||||
| Impacts | Extremely sensitive to introductions of exotic sport fishes | |||
| Instream habitat | Varies from thick organic ooze to sand to cobbles to bedrock to aquatic vegetation. A single lake may have one or many substrate types. | |||
| Aquatic invertebrate sampling equipment | kick nets and zooplankton nets | |||
| Dominant functional
feeding groups |
Predators, filterers and collector-gatherers, scrapers | |||
| Invertebrate
assemblage members |
Coleoptera: Dytiscidae, Haliplidae, Hydrophilidae
Diptera: Ceratopagonidae, Chironomidae, Culicidae, Tabanidae Ephemeroptera: Baetidae Callibaetis Hemiptera: Corixidae, Gerridae, Notonectidae Trichoptera: Limnephilidae Amphipoda: Gammarus lacustris, Hyallela azteca Hirudinea (leeches) Oligochaeta (worms) Hydracarina (mites) |
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