Global patterns of vegetation response to millennial-scale variability and rapid climate change during the last glacial period

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doi: 10.1016/j.quascirev.2010.07.016
Author(s): Harrison, S. P.; Sanchez Goñi, M. F.
Author Affiliation(s): Primary:
University of Bristol, School of Geographical Sciences, Bristol, United Kingdom
Other:
University of Bristol, United Kingdom
Université Bordeaux I, France
Volume Title: Vegetation response to millennial-scale variability during the last glacial
Volume Author(s): Goñi, Maria Fernanda Sanchez, editor; Harrison, Sandy P.
Source: Vegetation response to millennial-scale variability during the last glacial, edited by Maria Fernanda Sanchez Goñi and Sandy P. Harrison. Quaternary Science Reviews, 29(21-22), p.2957-2980. Publisher: Elsevier, International. ISSN: 0277-3791
Note: In English. 194 refs.; illus., incl. 2 tables
Summary: Ninety-four sites worldwide have sufficient resolution and dating to document the impact of millennial-scale climate variability on vegetation and fire regimes during the last glacial period. Although Dansgaard-Oeschger (D-O) cycles all show a basically similar gross structure, they vary in the magnitude and the length of the warm and cool intervals. We illustrate the geographic patterns in the climate-induced changes in vegetation by comparing D-O 6, D-O 8 and D-O 19. There is a strong response to both D-O warming events and subsequent cooling, most marked in the northern extratropics. Pollen records from marine cores from the northern extratropics confirm that there is no lag between the change in climate and the vegetation response, within the limits of the dating resolution (50-100 years). However, the magnitude of the change in vegetation is regionally specific and is not a simple function of either the magnitude or the duration of the change in climate as registered in Greenland ice cores. Fire regimes also show an initial immediate response to climate changes, but during cooling intervals there is a slow recovery of biomass burning after the initial reduction, suggesting a secondary control through the recovery of vegetation productivity. In the extratropics, vegetation changes are largely determined by winter temperatures while in the tropics they are largely determined by changes in plant-available water. Tropical vegetation records show changes corresponding to Heinrich Stadials but the response to D-O warming events is less marked than in the northern extratropics. There are very few high-resolution records from the Southern Hemisphere extratropics, but these records also show both a vegetation and fire response to millennial-scale climate variability. It is not yet possible to determine unequivocally whether terrestrial records reflect the asynchroneity apparent in the ice-core records. Abstract Copyright (2010) Elsevier, B.V.
Year of Publication: 2010
Research Program: ODP Ocean Drilling Program
Key Words: 24 Surficial Geology, Quaternary Geology; Alboran Sea; Angola Basin; Assemblages; Atlantic Ocean; Cenozoic; Climate change; Coral Sea; Dansgaard-Oeschger cycles; East Pacific; Fires; Glaciation; Global; Heinrich events; Leg 133; Leg 146; Leg 161; Leg 167; Leg 175; Leg 202; Mediterranean Sea; Microfossils; Millennial variations; Miospores; North Pacific; Northeast Pacific; ODP Site 1019; ODP Site 1078; ODP Site 1233; ODP Site 1234; ODP Site 820; ODP Site 893; ODP Site 976; Ocean Drilling Program; Pacific Ocean; Paleoclimatology; Paleoenvironment; Palynomorphs; Pleistocene; Pollen; Quaternary; Santa Barbara Basin; South Atlantic; South Pacific; Southeast Pacific; Southwest Pacific; Terrestrial environment; Upper Pleistocene; Vegetation; West Mediterranean; West Pacific
Coordinates: N341715 N341715 W1200211 W1200212
N414058 N414058 W1245559 W1245559
S163814 S163813 E1461814 E1461813
S410000 S361300 W0734100 W0742700
Record ID: 2012050564
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands