BIODIVERSITY Flashcards
(18 cards)
how many species of animals are there
7.77 million
how many species of plants are there
298,000
how many species of fungi are there
611,000
how many species of protozoa are there
36,400
how many species of chromista are there
27,500
total amount of eukaryotic species on Earth
8.74 million
how are the genus and species names written
genus is capitalized, species is all lowercase
alpha diversity, a
local or within habitat
gamma diversity, y
regional diversity
beta diversity, B
species turnover, formula a/y = B
functional diversity
concerns range of things that organisms do in communities and ecosystems
which biome has the highest species richness
tropics
where are larger amounts of mammals found
closer to the equator
what are the hypotheses relating to latitudinal patterns in diversity
tropics are a cradle of diversity
tropics are a museum of diversity
ecosystem productivity drives species richness
global surface area
tropics are a cradle of diversity
speciation rates are higher and more species are being born here
tropics are a museum of diversity
extinction rates are lower and old species are harbored here
global surface area
earth is bigger near the equator, so more species reside and evolve here
causes of contemporary species loss
habitat loss, over-exploitation (hunting), species invasions (pathogens), climate change
