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31 Cards in this Set
- Front
- Back
weatherford place
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first community of Eco Craft homes. Out of Roswell Ga. 8 solar homes within walking distance from major destinations
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Eastgate Centre
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building in Zimbabwe that uses termite-mound-inspired heating an d cooling system.
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natural selection
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1. every species has variations
2. many traits are passed from parents to offspring 3. Survival of the fittest traits |
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Animal ancestors
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dire wolf, short-faced bear, saber-toothed cat, bobcat, weasel, dogs.
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dire wolf
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fed on prey larger than itself (bison), many fossils in the Americas esp in California, died 10-16,000 yrs ago. Power rather than speed, couldn't hunt fast prey.
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golden toad
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Costa rica: went extinct due to fungal infection caused by humans
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golden toads were ______ to Monteverde cloud forest. Why is this dangerous?
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endemic (only occurring there). Because anything that happens within that ecosystem can be devastating
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Genetically based change
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appearance, functioning, and/or behavior
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premises and logic of natural selection
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organisms struggle to survive and produce more offspring than can survive, different characteristics are passed on while others aren't
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examples of accidental DNA change
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deletion, substitution, and addition of a nucleotide
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allopatric speciation
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species form due to physical separation of a species over some geographical distance
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environmental hotspots
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threatened but unique
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modern weapons against cane toads
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toads don't realize meat ants are a threat and get attacked by them when lured out by catfood
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5 changes to Michigan due to Zebra Mussels
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--cities closed down due to clogged water pipes
--mussels consume most of the algae so there's none left for algae feeding fish (fish are dying) --economic loss --clearer water, meaning healthier plants --bottom feeding fish eat mussel waste |
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realized niche
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species must share resources and compete (leads to resource partitioning)
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fundamental niche
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species can have most of resources with little competition
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trophic level
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rank in the feeding heirarchy (producers, consumers, and detritivores/decomposers)
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food web
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visual map of feeding relationships and energy flow.
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keystone species
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has a deep impact on ecosystem. usually consumers.
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secondary succession
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when an ecosystem develops because of dramatic change
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primary succession
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when an ecosystem develops from rock or sand to having species
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population
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group of same species in same area
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species
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group of populations who have certain characteristics and can breed naturally
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community
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assemblage of populations that live in the same place at the same time
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abiotic factor
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nonliving component of the environment
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niche
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functional role of a species in a community
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habitat
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environment in which an organism lives
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levels of eco-organization
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--organisms interact with each other and abiotic environ.
--science that deals with distribution of organisms, their interactions between other orgs and abiotic --how individual species interact with one another (why they wax and wane) |
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5 major population characteristics
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density
distribution ago sex rato birth and death rates |
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k-selected species
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small population, low biotic potential, high gestation period, invest heavily in a few young. Density-dependent factors
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r-selected
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high biotic potential, large number of offspring, Don't care for young after birth. Density independent factors.
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