Module 4: Biodiversity and Evolution

12 terms by jensaox 

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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

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