Download Cenozoic Plants and Climates of the Arctic by M. C. Boulter (auth.), Michael C. Boulter, Helen C. Fisher PDF

By M. C. Boulter (auth.), Michael C. Boulter, Helen C. Fisher (eds.)

Fifty million years in the past, the Arctic Ocean used to be a hot sea, bounded by means of lush crops of the warm-temperate shorelines of Scandinavia, Siberia, Alaska and the Northwest Territories. Wind and storms have been infrequent simply because Atlantic climate platforms had no longer built yet, as this present day, polar day size additional a adverse point to this another way tranquil climate.
With assistance from scientists from the entire nations with reference to the Arctic Circle, this ebook describes the palaeontology, the statistical research of vegetational positive factors, comparisons with atmospheric, marine, and geological positive aspects and a few of the 1st versions of plant migration constructed from newly built databases.

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1993) Ecophysiological responses of plants to global environmental change since the last glacial maximum. New Phytol. 125: 641-648. A (1992) Palaeo-C02 and climate. Nature 358: 114. Berner RA. (1993) Paleozoic atmospheric CO 2 : importance of solar radiation and plant evolution. Science 261: 68-70. L. M. (1993) Paleoatmospheric signatures in Neogene fossil leaves. Science 260: 1788-1790. , Wang Y. and Quade J. (1993) Expansion ofC4 ecosystems as an indicator of global ecological change in the Late Miocene.

Geol. of NW Europe: 653-665. Graham and Trotman. E. l (1987) Abyssal circulation and benthic foraminiferal changes near the PaleocenelEocene boundary. Paleoceanog. 2: 741-761. Miller KG. E. (1983) Development of Cenozoic abyssal circulation south of the Greenland-Scotland Ridge. H. Bott et af. ) Struct. develop. of the Greenland-Scotland Ridge: 549-589. Plenum Publishing Corporation. 46 Molnar P. and England P. (1990) Late Cenozoic uplift of mountain ranges and global climate change: chicken or egg?

1985) shows high (up to 3,000 ppm) CO 2 concentration at the beginning of the Cretaceous followed by a marked decline into the Tertiary (Fig. 1). This overall pattern is in general agreement with the record constructed by Freeman and Hayes (1992) but differences exist in the values of CO 2 concentrations themselves (Fig. 1). The two sets of results clearly indicate the need for additional proxy palaeo-C02 recorders. The thesis of the chapter is that by following changes in stomatal density through the Cretaceous and Tertiary is ought to be possible to reconstruct atmospheric CO2 variations and provide the first test of these predictions by observations.

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