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| species is pop whose members interbreed freely under natural condition - EO Wilson |
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| kingdom, phylum, class, order, family, genus, species |
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| landscapes, ecosystems, communities, species, populations/subspecies, individuals, organ systems, organs, tissues, cells, molecules, atoms |
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| respective species of life in selected areas |
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| groups of individuals within species |
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| driving force of evolution |
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| greater relative impact on ecosystem & other species |
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| highly specialized, small effects cause big changes in population |
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| require large amounts of natural habitat, conserving them preserves many others |
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| related to in emotional way; cute animals |
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| small populations, fragmented habitat, specialized niche, valuable |
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| important to human commercial use & important to protect |
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endangered species act (1973)
1. species that are at risk of extinction
2. protects habitat/ecosystem of species
3. provides some protection for populations
4. only applies to US
ex: morro bay kangaroo rat (small area where nat. disasters could occur) |
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Term
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Definition
Convention on International Trade in Endangered Species (1973)
1. all species threatened by extinction in response to trading
2. species which may become threatened if trade not restricted
3. optional list of organisms that might be endangered
4. No mention of subspecies/populations
5. international, ind. nations responsibility to develop laws @ regulation
ex: blackbuck (hunted for food & medicine) |
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Term
| california extinct animals |
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Definition
ca condor
kangaroo rat
kit fox
bald eagles |
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Term
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Definition
spotted own
buffalo
grizzly bear |
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Term
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Definition
mountain gorillas
giant pandda
tas. dev.
polar bears |
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| How many species are endangered in CA? |
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Definition
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| change in allele frequency within a population over time |
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| accumulated changes in allele frequency lead to formation of new species across large temporal scales |
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individuals progress in linear fashion, unable to turn back & breed w/ predessecor
1 species stays as 1 species w/ different attributes & alleles |
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| 1 population splitting into different varieties |
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| what are the necessary factors for evolution? |
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Definition
1. variation
2. heretability
3. selective pressure |
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Term
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Definition
1 gene codes for 1 protein product, protein product creates some physical/physiological aspect of living creature
genotype, underlying dna, protein, phenotype (anatomy, physiology, behavior, apparent feat) |
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| location where gene exists on chromosome |
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| heterozygous trait different than either homozygous combinations |
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| observed by biologists to find dominant & recessive traits in animals |
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population/species separated by physical barrier
major source of speciation |
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Definition
largely theoretical
2 species arising from 1 w/o geographical barrier |
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| 1 species dividing & specializing to different species due to dominance of area (most likely caused by accidental intro to new area) |
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| energy stability area theory |
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Definition
most diversity if:
1. solar energy
2. stable climate
3. area |
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Term
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Definition
1. water
2. seasonal stability
3. longterm stability |
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Term
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Definition
- majorly diverse areas
- seem to be places w/ most human pressure
- have endemic species
- 30% or less of primary vegetative cover remaining
- areas w/ diversity at risk |
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