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47 Cards in this Set
- Front
- Back
abyssal ecosystem
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the collection of organisms and the conditions that exist in the deep portions of the ocean
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alpine tundra
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the biome that exists above the tree line in mountainous regions
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benthic
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desrives organisms that live on the bottom of marine and freshwater ecosystems
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benthic ecosystem
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a type of marine or freshwater ecosystem consisting of organisms that live on the bottom
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biochemical oxygen demand
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the amount of oxygen required by microbes to degrade organic molecules in aquatic ecosystems
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biome
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a kind of plant and animal community that covers large geographic areas
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boreal forest
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a broad band of mixed coniferous and deciduous trees that stretches across North America;its northermost edge is integrated with the arctic tundra
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climax community
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last stage of succession; a relatively stable, long-lasting, complex, and interrelated community of plants, animals, fungi, and bacteria
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coral reef ecosystem
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a tropical, shallow-water, marine ecosystem dominated by coral organisms that produce external skeletons
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desert
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a biome that receives less than 25 centimeters of precipitation per year
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emergent plants
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aquatic vegetation that is rooted on the bottom but has leaves that float on the surface or protrude above the water
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estuary
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marine ecosystem that consists of shallow, partially enclosed areas where freshwater enters the ocean
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euphotic zone
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the upper layer in the ocean where the sun's rays penetrate
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eutrophic lake
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a usually shallow, warm water lake that is nutrient rich
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freshwater ecosystem
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aquatic ecosystem that has low amounts of dissolved salts
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grassland
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areas receiveing between25-75 centimeters of precipitation per year
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limnetic zone
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region that does not have rooted vegetation in a freshwater ecosystem
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littoral zone
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region with rooted vegetation in a freshwater ecosystem
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mangrove swamp ecosystem
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marine shoreline ecosystems dominated by trees that can tolerate high salt concentrations
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marine ecosystem
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aquatic ecosystems that have high salt content
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marsh
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area of grasses and reeds that is either permanently flooded or flooded for a major part of the year
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northern coniferous forest
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see boreal forest
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oligotrophic lake
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deep, cold, nutrient poor lakes that are low in productivity
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pelagic
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those organisms that swim in open water
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pelagic ecosystem
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a portion of a marine or freshwater ecosystem that occurs in open water away from the shore
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periphyton
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attached organisms in freshwater streams and rivers, including algae, animals and fungi
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permafrost
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permanently frozen ground
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phytoplankton
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free-floating, microscopic, chlorophyll-containing organisms
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pioneer community
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the early stages of succession that begin the soil-building process
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plankton
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tiny aquatic organisms that are moved by tides and currents
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prairie
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grasslands
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primary succession
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succession that begins with bare mineral surfaces or water
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savanna
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tropical biome having seasonal rainfall of 50-150 cnetimeters per year
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secondary succession
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succession that begins with the destruction or disturbance of an existing ecosystem
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seral stage
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a stage in the successional process
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sere
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a stage in succession
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steppe
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a grassland
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submerged plants
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aquatic vegetation that is rooted on the bottom and has leaves that stay submerged below the surface of the water
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succession
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regular and predictable changes in the structure of a community, ultimately leading to a climax community
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successional stage
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a stage in succession
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swamp
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area of trees taht is either permanently flooded or flooded for a major part of the year
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taiga
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biome having short, cool summers and long winters with abundant snowfall
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temperate deciduous forest
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biome tha thas a winter-summer change of seasons and that typically receives 75-150 centimeters or more of relatively evenly distributed percipitation throughout the year
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tropical rainforest
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a biome with warm, relatively constant temperatures where there is no frost. more then 200 centimeters of rain per year
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tundra
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a biome that lacks trees and has permanately frozen soil
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zooplankton
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weakly swimming microscopic animals
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succession
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the idea that communities modify through predictable changes over time
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