Palaeo context Effects of climate change on plant biodiversity

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australian rainforest: ecosystem known have contracted in area on recent geological time result of climatic changes.



map of global vegetation distributions during last glacial maximum


the earth has experienced changing climate in time since plants first evolved. in comparison present day, history has seen earth cooler, warmer, drier , wetter, , co2 (carbon dioxide) concentrations have been both higher , lower. these changes have been reflected shifting vegetation, example forest communities dominating areas in interglacial periods, , herbaceous communities dominating during glacial periods. has been shown past climatic change has been major driver of processes of speciation , extinction. best known example of carboniferous rainforest collapse occurred 350 million years ago. event decimated amphibian populations , spurred on evolution of reptiles.








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