GEO 101 Lecture Notes - Lecture 29: Genetic Variability, Biodiversity Hotspot, Genetic Diversity
8 Dec 2020
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Document Summary
Diversity with respect to habitat too not just animals. Approx 1. 7 million known species are known. It is unknown how many species are still undiscovered (estimates up to 20 million species) Of the known species are animals. 2. 3% of the planet"s land surface is home to 50% of the world"s plant species and. High density areas of diversity and these places overlap with forests. Generally biodiversity decrease from the equator towards the poles. Canada has less species than those compared to the south. Priority points are in special needs of conservation. Biodiversity hotspots are geographic areas that contain high levels of species diversity but are threatened with extinction. In brazil the amazon is facing deforestation (loss of habitat from the changing of forest to agriculture) High levels of species diversity but are threaned by extincition (most treat) In canada, boreal forest is key to canada"s biodiversity. Wetlands are the most biologically diverse part of canada"s ecosystem.
