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PLANTS AND ANIMALS 26 PLANTS AND ANIMALS
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adapted adults Algae amounts Amphibia aquatic areas Bacteria basins benthic benthos bicarbonate biological bottom calcium carbon dioxide carnivorous catchment characteristic chemical Chironomidae colour communities completely concerned Crustacea density depth developed dissolved solids ecology energy environment epilimnion eutrophic extremely factor feed figure fish flow forms fresh water freshwater freshwater habitats ground water growth habitats hypolimnion important increase insects invertebrates known lakes large number larvae lentic light littoral lotic macrophytes mainly major marine material methods microhabitats mouth movement natural waters normally nutrients oligotrophic organic matter oxygen parasitic particles period photosynthesis phytoplankton plankton plants and animals pollution ponds produced profundal Protozoa quantities relatively reservoirs respiration river Rotifera running waters running-water systems salts sample sampler sediments seiche shallow silt standing waters stratification stream substrate temperature terrestrial thermocline tropical tube types usually various vary velocity water body water surface zooplankton