Effects of Past Global Change on Life
National Academies Press, Jan 15, 1995 - Science - 250 pages
What can we expect as global change progresses? Will there be thresholds that trigger sudden shifts in environmental conditions--or that cause catastrophic destruction of life?
Effects of Past Global Change on Life explores what earth scientists are learning about the impact of large-scale environmental changes on ancient life--and how these findings may help us resolve today's environmental controversies.
Leading authorities discuss historical climate trends and what can be learned from the mass extinctions and other critical periods about the rise and fall of plant and animal species in response to global change. The volume develops a picture of how environmental change has closed some evolutionary doors while opening others--including profound effects on the early members of the human family.
An expert panel offers specific recommendations on expanding research and improving investigative tools--and targets historical periods and geological and biological patterns with the most promise of shedding light on future developments.
This readable and informative book will be of special interest to professionals in the earth sciences and the environmental community as well as concerned policymakers.
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Impact of Late Ordovician GlaciationDeglaciation
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abundance Antarctic assemblages atmospheric australopithecines Basin benthic biota biotic biozones C-T mass extinction carbon Cenomanian Cenozoic climatic changes coal cooling correlation Cretaceous cycles deep-sea deglaciation deposits diversity dominated E. G. Kauffman early Earth ecological ecosystems El Kef environmental change environments Eocene etal evidence evolution evolutionary extinction events fauna Figure floras foraminifera forest genera geochemical Geological Society glacial global change graptolites habitats high latitudes Hirnantian immigration episodes increase interval isotopic K/T boundary Keller Kennett land mammal Late Maastrichtian major mammal marine mass extinction meltwater Miocene nannofossils Neogene North America North Atlantic Northern occurred Ocean Drilling Program Oligocene Ordovician oxygen isotopic Paleoceanography Paleocene paleoecology patterns planktic planktonic planktonic foraminifera plants Pliocene pollen Proterozoic Quaternary region relatively salinity savanna sea level sediments Society of America species Spicer Stott stratigraphic swamps taxa temperature terrestrial Tertiary tion tropical turnover Turonian vegetation warm Webb Western Interior Westphalian Younger Dryas zone