Chapter 4 Ecosystems and Communities.pptx

Wetlands water may be flowing or standing salty or

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WETLANDS Water may be flowing or standing, salty, or brackish Very productive ecosystem Four types
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BOGS Small depressions where water collects Lots of mosses
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MARSH
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MARSH Shallow wetlands along rivers Grass-like plants in water Looks like river of grass
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SWAMP
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SWAMP Water is slowly flowing through these wetlands Looks like a flooded forest
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NAME THIS ECOSYSTEM (HINT: UNIQUE TO FLORIDA)
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EVERGLADES Wet season (May to October) Dry season (November to April) Unique Wildlife Endangered species
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ESTUARY Wetlands where rivers meet ocean Mix of fresh and salt water (brackish) Affected by rise and fall of ocean tides Many are shallow Photosynthesis plays a major role even in benthic zone
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ESTUARIES Primary producers are plants and bacteria, who use both photosynthesis and chemosynthesis Estuary food webs differ from other ecosystems because primary production is not consumed by herbivores Most organic material enters food web as detritus Detritus : dead material being broken down Clams, worms, and sponges feed on this Support large biomass Fewer species than fresh water ecosystems 2 types
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SALT MARSH Salt tolerant plants above low tide line Sea grasses underwater Found along eastern North America (Maine to Georgia) Chesapeake Bay in Maryland
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MANGROVE SWAMP Coastal estuaries found in tropical regions Hawaii and Florida Salt tolerant trees (mangroves) Sea grasses Prevalent in Everglades
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MARINE ECOSYSTEMS
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ZONES OF MARINE ECOSYSTEMS 2 Main Divisions Based on Light Photic 200 m photosynthesis Aphotic Permanent darkness chemosynthesis Depth/Distance Divisions Intertidal Zone Rocky zonation Coastal Ocean (neritic zone) Low tide mark to outer edge of continental shelf Open Ocean (pelagic zone) Edge of continental shelf and outward 500m to 11000m Largest division Benthic Zone Ocean floor Attached organisms…
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MARINE ECOSYSTEM Divided into zones based on depth and distance from shore Intertidal Costal ocean Open ocean Benthic zone: ocean floor
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NAME THIS MARINE ECOSYSTEM Intertidal zone
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INTERTIDAL ZONE
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COASTAL OCEAN (NERITIC) Coastal ocean: extends from low-tide mark to edge of continental shelf
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  • Winter '17
  • Sally Micheals
  • Zoology, Work, Aquatic Ecosystem, Forest

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