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10 Cards in this Set
- Front
- Back
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Ecologicalcommunity the study of interactions |
between species in communities |
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Define ecological niche and distinguish it fromhabitat. |
Ecologicalniche: it’s the way it interacts with other species and the physicalenvironment to make a living. Versushabitat which is only physical environment |
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Fundamentalniche, the full range of condition under which a species can survive. Therealized niche the portion of fundamental niche that a spices can actuallyoccupy as a result of |
itsinteractions with other species. |
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Interspecificcompetition is competition among different species.such as the hyenas and a lion over resources,. intraspecfic competition is: |
intraspecificcompetition is competition among the same species |
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for each biotic interaction list +/-/0 for specie #1 and specie #2 1)predator/prey, host/parasite 2)commensalism 3)mutualism 4)competition |
1)+/- 2)+/0 3)+/+ 4)-/- |
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(3) possible outcomes of competition: competitive exclusion resource partioning character displacement why is competitive exclusion prevented from being frequent in nature |
resource partitioning and character displacement |
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species use coloration to avoid predation. explain the three types: Batesian,cryptic and aposematic coloration |
Batesian, when a tastyspecies resembles an unpalatable one. Aposematic coloration- bright colors tosignal its poisonous; cryptic coloration: camouflage |
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trophic levels start with primary producers(plants) and then are consumed by primary consumers (herbivores) which are then consumer by more consumers. what would happen if the herbivores declined. |
Few herbivores(primary consumers)= more predators(consumers) + more vegetation (primaryproducers) |
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Top-downcommunities/trophic cascade- communities are determine by _______ Bottom up communities-_______ determine all trophic levels |
predators primary producers of nutrients |
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Explain how the addition of wolves toYellowstone affected the biotic and abiotic components of the ecosystem |
wolves (4 th level of consumers) killed off herbivores so vegetation grew large and more oxygen was in the air |
