click below
click below
Normal Size Small Size show me how
APESCH11
Question | Answer |
---|---|
biodiversity | |
genetic diversity | a measure of the variety of different versions of the same genes within individual species |
species diversity | the number of different kinds of organismswithin individual communities or ecosystems |
ecological diversity | assesses the richness and complexity of a biological community, including the number of niches, trophic levels and ecological processes that capture energy, sustain food webs, and recycle materials within this system |
species richness | the total number of species in a community |
species evenness | the relative abundance of individuals within each species |
phylogenetic species concept | definition of species that emphasizes the branching relationships among species or higher taxa regardless of whether organisms can breed successfully |
evolutionary species concept | defines speciesin evolutionary and historictermsrather than reproductive potential |
genome | made up of the millionsof nucleotides in DNA arrangedin a speceific sequence that spells out the structure of tproteins that make up cellular structure of every organism |
biodiversity hotspots | areaswith exceptionally high numbers of endemic species |
existence value | the importance we place on just knowing that a particularspecies oraspecific organism exists |
extinction | the elimination of species |
HIPPO | Habitat destruction, invasive species, pollution, population(human), and overharvesting |
invasive species | organisms that move into new territory |
overharvesting | harvesting som uch of a resource that it threatens its existence |
endangered species | a species considered to be in imminent danger of extinction |
threatened species | while still abundant in parts of its territorial range, this species has declined significantly in total numbers and may be on the verge of extinction in certain regions or localities |
vulnerable species | naturally rare organisms or species whose numbers have been so reduced by human activities that they are susceptible to actions that could push them into threatened or endangered status |
habitat conservation plans | agreements under which property owners are allowed to harvest resources or develop land as long as habitat is conserved or replaced in ways that benefit resident endangered species in the long run. Some accidental killing of species is allowed |
gap analysis | a biogeographical technique of mapping biological diversity and endemic species to find gaps between protected ares that leave endangered habitats vulnerable to disruption |