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31 Cards in this Set

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