2.1-2.2 Vocab Flashcards
What does higher biodiversity lead too?
High ecosystem/ pop. health; great complexoty; less likly to naturally be distrubed
Types of diveristy
Habitat Diversity
Species Diversity ( kinds)
Habitat diversity
The number of diff. habitats available in a given area
Species Diversity (A)
The number of diff. species in an ecosystem and the balance or evenness of the pop. sizes of all species in the ecosystem
Species Diversity (B)
How different the genes (genomes) are of individuals within a population (group of the same species)
Higer species diversity
Higher ecosystems resilience
What are the requirements to become a hotspot
At least 1,500 vascular plants as endemics - high percentage of plant life found nowhere else on the planet
30% or less of its original natural vegetation - must be a “threatened” region
Endemic species
Species only found in ONE place of the world
Ecosystem service
Goods that come from natural resources or services/functions that ecosystems carry out that have measurable economic/financial value to humans
Provision services
Goods/products directly provided to humans for sale/use by ecosystems
Touchable goods
Regulating services
Benefits provided by ecosystem processes that moderate regulate natural condidtions like climate and air
INDIRECT service
Supporting service
Natural ecosystems support porvesses we do ourselves makin them less costly and eager for us OR supporting services that benefits humans DIRECLY
We could do it but Nature does it for us
Cultural services
Revenue from recreational activities (hunting/fishing licenses, park fees, tourism-related spending) & profits from scientific discoveries made in ecosystems (health/ag./educational knowledge)
What causes of Low biodiversity
Isolation
Physical barrier
Low genetic diversity
Isolation types
Temporal Isolation
Behavioral Isolation
Geographic Isolation
Reproductive Isolation
Temporal Isolation
Member of a population that have different breeding times/seasons
Behavioral Isolation
Members of the same population develop different behaviors that are not recognized by the rest
Geographic Isolation
Physical separation of a group of individuals from others of the same species
Reproductive Isolation
Males & females = no longer attracted
Reproductive organs don’t match (mechanical isolation)
Physical Barrier
Development of new species when separated by physical barriers
Allopatric
Species that occur with GEOGRAPHICAL isolation
Sympatric
Evolution of one species into two NO GEOGRAPHIC ISOLATION
Low Genetic Diversty
Low amounts of gene flow, genetic drift, or mutations
Bottleneck events
Inbreeding depression
