BIOL 3130 Lecture Notes - Lecture 15: Inbreeding Depression, Peripatric Speciation, Allopatric Speciation
1 Feb 2017
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Document Summary
Biodiversity hotspots areas with high endemic species experiencing rapid habitat loss. Iucn: organization that maps hotspots and labels organisms as threatened, endangered etc. No actual political power, thus often not enforced (afraid of law suits etc) Species identified as endangered may have a large economic value thus people don"t want to protect them. Neo-endemics = an entirely new endemic taxon on a restricted area (eg island) Paleo-endemics = an old taxon that has lead to a new endemic species due to separation from the rest of the taxon. Darwinian island = an island that has never been on contact with the source of colonists (abundant. Ecological space will gradually be filled through speciation (since this will occur more rapidly if isolation persists, speciation leads to neo-endemics than chance immigration once it has started) Fragment islands = an island that is initially filled by connection to mainland prior to separation.
