Term
| background extinction rate |
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Definition
1/2 species/ yr.
3-4 families/ MY |
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Term
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Definition
| the sum of two conditions stregthens them both ie. bark beetles survive better in higher temps |
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Term
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Definition
| the rivets in an airplane wing. You can lose a few species but losing too many will eventually cause the destruction of the biosystem (wing) |
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Term
| Romantic-Transcendental ethic |
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Definition
| Emerson and Thoreau and Muir. Nature has healing powers (quasi-religious) |
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Term
| Resource Conservation Ethic |
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Definition
| Gifford Pinchot. Utilitarian philosophy. resources should be used for greatest good for greatest amount of people |
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Term
| Evolutionary-Ecological Land Ethic |
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Definition
| Nature is not a collection of individual parts. Led to Eco-system management |
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Term
| Society for Conservation Biology |
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Definition
| organization dedicated to promoting the scientific study of the phenomena that affect the maintenance, loss, and restoration of biological diversity. |
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Term
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Definition
| various lifeforms in a given ecosystem |
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Term
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Definition
| the number of species in a given community |
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Term
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Definition
| total species richness over a large area or region |
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Term
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Definition
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Term
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Definition
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Term
| species accumulation curve |
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Definition
| will slowly level off if you took a large enough sample size |
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Term
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Definition
| measure of biodiversity of a community. 40 dogs and 42 ducks is even but 40 dogs and 1000 ducks isnt |
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Term
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Definition
| I used the equation 1/(the sum of Pi2) for these calculations. Pi is the percent of each species in the total population |
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Term
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Definition
| what is the percent dominance of the first species, the first two, the first three? |
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Term
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Definition
| in two or more communities, how many species are similiar |
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Term
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Definition
| receive different alleles from each parent |
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Term
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Definition
| receive same allele of gene from each parent |
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Term
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Definition
| the transfer of new alleles between populations, and the formation of new genetic combinations |
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Term
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Definition
| if it looks different you have a different species |
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Term
| phylogenic species concept |
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Definition
| taxa are different species if they can be distinguished on the basis of phenotype or genotype |
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Term
| biological species concept |
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Definition
| two organisms are the same species if they can produce viable offspring. Ernst Mayr |
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Term
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Definition
| Fogged the canopy to look at insects |
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Term
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Definition
| online reference source for 1.8 million species |
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Term
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Definition
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Term
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Definition
| and E.O Wilson came up with the theory of island biogeography |
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Term
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Definition
| Convention on International Trade in Endangered Species of Wild Fauna and Flora. Three Appendices on severity of extinction |
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Term
| Equilibrium Theory of Biogeography |
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Definition
| large islands tned to have greater number of species than smaller islands because of two factors: Distance to mainland and and that immigration and extinction rates are affected by the size of the island |
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Term
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Definition
| first to see the link between island size and species number |
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Term
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Definition
| first to say that the breakup of large landmass into smaller units will lead to the extinction of one or more species |
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Term
| immigration and emigration |
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Definition
| when immigration and emigration are balanced then the species number is in equilibrium |
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Term
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Definition
| minimal number of species capable of successfully colonizing a habitable island |
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Term
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Definition
| the successful establishment of an immigrant species, where breeding and population increase are accomplished |
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Term
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Definition
| the number of species extinct and replaced per unit time |
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Term
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Definition
| when studying the number of species per unit of area, the species increase linearly with the log of the area |
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Term
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Definition
| increase rapidly at low numbers but then level off as size of island increases |
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Term
| Distance Effect and Simberloff |
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Definition
| he gassed two islands one close and one far, and it proved that closer islands get more species |
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Term
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Definition
| believes that one large area of land is better than smaller subunits of the land because species richness increases with habitat area |
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