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12 terms

Module 4: Biodiversity and Evolution

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species diversity
the number and relative abundance of species in a biological community
genetic diversity
The variability in the genetic make up among individuals within a single species. In more technical terms, it is the genetic differences among populations of a single species and those among individuals within a population.
**Different individuals having different versions of genes
(www.biodiversity.govt.nz/picture/doing/nzbs/glossary.html)
ecological diversity
The variety of ecosystem types (for example, forests, deserts, grasslands, streams, lakes, wetlands and oceans) and their biological communities that interact with one another and their non-living environments.

(www.biodiversity.govt.nz/picture/doing/nzbs/glossary.html)
Threatened Species
a species that could become endangered in the near future
Endangered Species
a species whose numbers are so small that the species is at risk of extinction
Endemic Species
species that are native to and found only within a limited area
Biodiversity Hotspot
A biodiversity hotspot is a biogeographic region with a significant reservoir of biodiversity that is under threat from humans.
Debt-for-Nature Swaps
forgiveness of (some) international debt in exchange for nature protection in developing countries.
or
financial transactions in which a portion of a developing nation's foreign debt is forgiven in exchange for local investments in conservation measures.
U.S. Endangered Species Act
a Federal legislation that aims to conserve the ecosystems upon which endangered and threatened species depend.

mission= twofold:
to provide protection for species that are in danger of extinction and to conserve the habitats on which those species depend.
Misconception 1
Evolution seeks to explain creation of life.
*it's actually more interested in the modification of a species after it came into being
Misconception 2
Evolution is goal oriented
*one cannot know genetic variants and which will be available to natural selection and can't predict environmental conditions
Misconception 3
Evolution produces perfect adaptations
*rarely perfect
-adaptations are compromises between differing needs