Introduction to Biogeography Flashcards
biogeography
the geography of flora (plants) and fauna (animals)
Biodiversity or biological diversity
the variety of life forms, the ecological roles they perform and the genetic diversity they contain
*# of species (life forms): 1.75 million identified & described (only know this one); Estimates of between 3.7 & 111 million species, with a working estimate 13.62 million.
genetic diversity
variety in the genetic makeup among individuals within a species
species diversity
variety among the species or distinct types of organisms found in different habitats of the planet
ecological diversity
variety of forests, deserts, grasslands, streams, lakes, oceans, coral reefs wetlands & other biological communities
functional diversity
biological & chemical processes or functions such as energy flow & matter cycling needed for the survival of species & biological communities
processes
- photosynthesis
- energy flow within & between systems
- ecological efficiency: Trophic levels, food webs
- plant & animal succession
- geographic dispersal: Physical factors, Biotic factors
matter
from subatomic particles to ecosystems
atom –> molecules –> protoplasm –> cells ->tissues –> organs –> organ systems –> organisms –>populations –> communities –> ecosystems –> biosphere
based on atoms
protons, electrons, neutrons, ions
elements
non-human made (‘natural’) & human-made
compounds
organic (hydrocarbons, carbohydrates, etc) & inorganic
2 sub areas
Phytogeography- plant distributions
Zoogeography- animal distributions