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39 Cards in this Set
- Front
- Back
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Exponential Growth |
Occurs when sources are unlimited |
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Logistic Growth |
Occurs when there are limiting sources, close to the carrying capacity |
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Carrying Capacity |
the environmental resistance, the hight a population can grow with the resources provided |
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Biotic Potential |
R-Selected, The smalle rapid development, rapid maturity large number of off springs, high reproductive rates |
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Density Dependent |
Biotic- Food disease, competition, predation, stress, parasites |
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Density Independent |
Abiotic- food space, temperature, wind, water |
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K- Selected |
K= carrying capacity, larger body size, high parental, long lived off spring |
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Characterize a population |
dispersion, density, age, sex ration and age structure |
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Interspecific competition |
Between species determined by niche overlap |
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Intraspecific competition |
among the same species, more intense because it's in the same niche |
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Exploitative (scramble) |
can be intra or inter, whoever can use the resources the fastest, |
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Interface (contest) |
Predator denies access to a resource can be intraspecific or interspecific |
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Allelopathic |
secrete chemical into the soil that inhibt the growth of potential of competitors desert plant, form of interface |
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Niche |
Functional role of an organism in the community |
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niche Overlap |
increases competition |
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Fudamental niche |
full range of conditions and resources, under which an organism can survive and reproduce |
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Realized Niche |
portion of the fundamental niche that an organism actually exploits |
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Intraspecific Competition |
- Caused by niche overlap |
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Habitat |
Where an organism lives Sympatric- species that live int eh same habitat |
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Competitive exclusion Principle |
no two species can coexist on a single limiting resource |
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Competition |
Degree of niche overlap (-,-) |
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Mutualism |
both organisms benefit format eh interaction (+,+) |
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Commensalism |
One organism benefits, the other does not suffer (+,0) |
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Keystone Predators |
any organisms that tis essential to the structure and function of the community in which it lives |
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Predator Responses |
numerical - high density Functional resposne- how predator handles prey |
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Herbivore |
-Grazer- heracease (non-woody) -Chemical- coupound that makes tissues taste bad Specific- production of strongly advertises of toxic chemical |
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Coevolution |
Two or more organisms evolve together |
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Arms Race |
Cyrptic Coloration- hid, fiddler crab Warning coloration- stay away |
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Mimicry |
Batesin- mimic non-toxic actual animal toxic Mullerian- both toxic |
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Countershading |
- dark color and light color, top and bottom protection |
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Predator Satation |
Larger release of off spring in hope that predators gets full and some survive |
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Succession |
changers in community parameter thru time type of species, soil development parameter- changes in structure and function |
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Cycli |
- maintenance replacement, short term, |
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Directional Starting Point |
Ending point, seeds are more prominent have an advantage |
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Primary Succession |
Developing an ecosystem where one did not exist before, volancic istalnd |
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Seral Stage |
Any recognizable stage in ecological succession |
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Primary succession stages |
-pioneer stage- 1-2-3-climatic climax -pioneer stage- annual plants, |
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Climatic Climax |
Community that can be supported indenifintayly |
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secondary Succession |
- Disturbance ot the climax community, fire, clear cute plowing , parasites, predation |
