Yet it is difficult to predict how species ranges will change in response to climate and separate these changes from all the other man-made environmental change such as eutrophication, acid rain and habitat destruction.

Climate change and invasive species are also considered by the USDA to be two of the top four causes of global biodiversity loss.

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Changes in life cycle (phenology):

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Changing environmental are therefore expected to lead to changes in life cycle events.  For example, flowering times in British plants have changed, leading to annual plants flowering earlier than perennials, and insect pollinated plants, with potential ecological consequences.

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Genetic diversity:

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Since genetic diversity is a main contributor of how an ecosystem can evolve, the ecosystem would be much more susceptible to getting wiped out since everyone would be like the next. An absence of genetic mutations and decrease in species richness greatly enhances the possibility of extinction.