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31 Cards in this Set
- Front
- Back
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population
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a group of organisms of the same species living in the same area
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parasitism
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live on another
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density-dependent factors
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becomes limiting when population density reaches a certain level
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tropical zone
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region that extends 30 degrees N and 30 degrees S of the equator
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biosphere
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the think layer of air, land, and water that is home to all living things
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climax community
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an established community that encounters little ecological succession
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limiting factor
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biotic of abiotic factor in the environment that limits size of populaton
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mutualism
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both benefit
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commensalim
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relationship in which 1 organism benefits from an interaction and the other is neither helped nor harmed
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predator-prey
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predator eats prey
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symbiosis
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one species live in close association with another
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community
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collection of interacting populations within a given ecosystem
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zero growth
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species have reached a steady state
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estuary
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fresh and salt water mix, many varities of plants
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flowing water
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moving waters, currents, rivers, erosion can change landscape
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standing waters
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ponds and lakes
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inland wetland
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marshes and swamps
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marine
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has 6 zones
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aphotic zone
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surface down, little light, fishes make there own light
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benthic
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bottom, surface down, nearcoast, sea stars, shrimp, crabs
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intertidal
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ocean edge
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neritic
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over contential shelf, rich in nutrients
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oceanic
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mineral nutrients scarce, smaller populations
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photic
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at zoom in depth, phytoplankton, 200 plaknton, fish , squid
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desert
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dry, hot, antartica-cold
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taiga
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confierous forest, "cone-bearing evergreens" top layer of soil, rich in minerals, humus
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tundra
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northernmost biome, dry, cold winters, treeless, artic wolves permafrost
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tropical rain forest
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warm and wet, diverse, 200-400 cm rain per year
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chaparral
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tough, stunted plants, ares like Southern Cali and South Texas
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grasslands
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found in the interior of contients
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succession
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new community gradually replace existing ones
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