cry Flashcards
(14 cards)
Animals
metazoans, Eukaryotic, heterotroph, motile, lack cell walls, multicellular
diversity
having different types or forms, different “counts” of taxa
disparity
morphological differences between various taxa
biodiversity
a measure of all the organisms in a particular location (abundance and richness)
abundance in biodiversity
how many individuals of each species
richness of biodiversity
how many types of species
Simpsons diversity idex
- Emphasizes richness
- discounts rare species
- diversity decreases with abundance
- pick out 2 organisms from bag, if the same, diversity is lower, if diff diversity higher
shannon-wiener
- Emphasizes richness
- hard to compare un-even samples
- Diversity decreases with Abundance
- pick animal one at a time, if you cannot predict the next animal then more diverse
why Is abundance hard to measure, what is solution?
- very large areas
- changeable with season, life history, motility
- solution- only measure richness
Variation on Abundance: species area curves
measure increasingly big areas, when curve levels out it means you’ve found abundance ?? not really sure
problems with measuring species abundance and richness
- species hybridization
- horizontal gene transfer
extinction rate
1000-5000 species a year
how many species in taxonomic classification system
2 million
how many eukaryotic species estimated in 2011
8.7 million
