Aquatic-Terrestrial_Biome_Chart - Using pages 1094-1097 in...

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Using pages 1094-1097 in your text book, fill out the following chart: Aquatic Biome Photosynthetic or Food- Producing Organisms Animals Environmental Threats Lakes Standing bodies of water range from ponds to lakes. Nutrient poor, O 2 rich = oligotrophic lakes. Nutrient rich, O 2 poor = eutrophic lakes Rooted & floating plants close to shore; phytoplankton & cyanobacteria further from shore where it’s too deep to support rooted aquatic plants Zooplankton & phytoplankton in deeper areas; invertebrates in benthic zone; fish in all zones. Runoff pollution from fertilized land leads to nutrient enrichment. This can lead to algal blooms, O 2 depletion, & fish kills. Also Wetlands An area covered w/ water for long enough time to support aquatic plants, range from permanently flooded to infrequently flooded areas. H 2 0 & soil low in dissolved O 2 . Have ability to filter dissolved nutrients & chemical pollutants. Floating pond lilies, emergent cattails, sedges, tamarack, black spruce, woody plants, sphagnum mosses Invertebrates & birds. Crustaceans, aquatic insect larvae & muskrats consume algae, detritus & plants. Dragonflies, otters, alligators, & owls. Many other species too. Draining & filling have destroyed up to 90% of wetlands in some regions. Streams & Rivers Current! Headwater streams are clear, cold, turbulent & swift. Rivers formed from joined streams, usually warmer & more turbid. Salt & nutrient content increases from headwaters to mouth. Headwater streams rich in O2, rivers have substantial O2, except where organic enrichment has occurred. Headwater streams rich in algae or rooted aquatic plants. Streams in temperate/tropical forests, leaves & other organic matter. Rivers consist of dissolved & highly fragmented material carried downstream from forested headwater Fish & invertebrates distributed according to, & throughout, the vertical zones. Municipal, agricultural, & industrial pollution degrade water quality & kill aquatic organisms. Damming & flood control impair the natural functioning of ecosystems & threaten migratory species. Estuaries Transition area b/t river & sea w/ complex flow patterns. Salinity varies from freshwater to seawater & from the rise & fall of tides. Very productive b/c of nutrients from rivers. Saltmarsh grasses & algae
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This note was uploaded on 08/21/2008 for the course BIOL 2108 taught by Professor Leege,gleason during the Spring '08 term at Georgia Southern University .

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Aquatic-Terrestrial_Biome_Chart - Using pages 1094-1097 in...

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