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What are the Biotic Factors?
- 1.Food Requirments (nutrients)
- 2.Redators
- 3.Camouflage
- 4.Competition for room and for food
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Rain shadow
air currents off the Pacific that hit one side of a mountain...the other side is dryer
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Factors that influence climate
rain shadows,ocean current,latitude,altitude
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How climate is determined
Amount of sunlight, appropreate tempature, water availabitlity
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Ecology
is the study of the interactions of organisms with their enviroment
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biosphere
includes ass living organisms on earth
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Ecosystems
study the interaction of biotic and abiotic factors in a given area
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Communities
consist of the interactions of all species in an ecosystem
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population
organisms involves a group of members of the same species occupying a particular area
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Biotic
factors include all living organisms
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Abiotic
factors are the non-living partsof an ecosystems
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Biome
is a major division of the ecological communities of earth generally characterized by distinctive vegetation
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Weather
is the short term fluctuations of temperature, humidity, wind, and percipitation
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Climate
concerns weather patterns that prevail from year to year
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Three major types of population distribution
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clumped
social groups (stick together)
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uniform
solitaire animals
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Random
trees in rainforest
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Survivorships
- stable species Survival
- constant species survival
- unstable species survival
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density independent factors
wildfires,earthquakes,and floods
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density dependent factors
disease, predators,competition for food
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coevolution
two closlyrelated speices interact in such ways that evolution change over time by natural selection
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habitat
what it eats, what eats it, the ecolgical that it is round and the abiotic factors where it is found
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competitive exclusion
no two species can inhabit the same ecological niche at the same time one species will survive and prosper; the other will become extinct
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resource partitioning
species with the same needs can live in the same place/species limiting their ecological niche
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keystone species
species that changes its habitat t invole more species in the habitat
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symbiosis
parasitism, commensalism, mutualism, amensalism
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the law of energy movement
energy moves through an ecosystem in a continous one-way flow:therefore there must be a constant replacement from an outside source
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the law of nutrient movement
nutrirnts constantly cycle and recycle through an ecosytem
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succession
periods of a gradual change as more more complex ecosytems develop
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primary
no loiotic #'s at all
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secondary
pioneer species opportunistic
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climax communites
can live for 100's of years if not disturbed
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biolgical magnification
toxins become more consin traitedas they move up the trophic level
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