BIOL3007 Lecture Notes - Lecture 20: Ecological Threshold, Threshold Model, Ecosystem Services
29 Nov 2018
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Document Summary
Curves that look at the number of species present over the amount of area. Tells you that when you lose habitat you lose species. When looking at species loss, it is useful to use such curves. But, one must be aware the species-area relationships overestimate extinction rates from habitat loss. Habitat loss and fragmentation are major contributors to the loss of biodiversity. The nature of these two drivers are important in understanding the impact on biodiversity. If disease gets into the single large system, it may wipe out all organisms within there. The linked systems have a greater movement of genetic material moving through, species dependent approach. The round one allows for a greater diversity of organisms, as there are different environments within the round one. The oval one would have many edge effect though, which introduced predators seem to like. Mainly have been used to explore species responses.
