Biodiversity and Conservation Flashcards
Biodiversity
Variety, numbers, and distribution of organisms
Species Diversity
Number of species (richness) and relative proportions (evenness)
Habitat Diversity
Range of different habitats
Genetic Diversity
“Gene Pool” biological variation that occurs within species
How is Biodiversity an indicator of Ecosystem Health?
1.
Hotspots
A place with high levels of biodiversity that is under threat by humans
Key Details:
- Rain forests
- Nearer the tropics
-Habitat under threat
-Large Densities of humans nearby
Speciation
-Change of a species over a long period
- Formation of new species when populations become isolated and evolve differently
- Biological variation is random
- can be beneficial/harmful or no impact at all on individual
Natural Selection
Survivial of the fittest, more adapted/ tend to survive and reproduce better
Mechanisms of Speciation
Background Extinction
6th mass extinction
Threats to biodiveristy
Factors that maintain biodiversity
Factors that lead to a loss of biodiversity
What is important about Rain Forests?