GSTDTAP  > 气候变化
DOI10.1002/joc.5296
Regional variation in Holocene climate quantified from pollen in the Great Plains of North America
Commerford, Julie L.1; Grimm, Eric C.2; Morris, Christopher J.3; Nurse, Andrea4; Stefanova, Ivanka2; McLauchlan, Kendra K.3
2018-03-30
发表期刊INTERNATIONAL JOURNAL OF CLIMATOLOGY
ISSN0899-8418
EISSN1097-0088
出版年2018
卷号38期号:4页码:1794-1807
文章类型Article
语种英语
国家USA
英文摘要

The Great Plains experienced extreme fluctuations in precipitation and temperature throughout the Holocene, but these fluctuations have been difficult to quantify systematically across the region. Pollen has long been used as a proxy for reconstructing climate changes, but its power is limited if a region is devoid of modern pollen samples to facilitate comparison with known climate conditions. Here, we present a set of pollen-climate transfer functions developed using weighted-averaging partial least squares to reconstruct mean annual precipitation (MAP), mean temperature of the coldest month (MTcold) and mean temperature of the warmest month (MTwarm). At the foundation of these transfer functions is a new set of 141 modern pollen samples that specifically cover the climate space of the Great Plains. These functions quantify the relationship between pollen assemblages and modern climate in this region (r = 0.928, 0.838 and 0.897 for MAP, MTcold and MTwarm, respectively). We applied these functions to three previously established pollen records taken from lacustrine sites in the region - Fox Lake, MN; Moon Lake, ND; and Kettle Lake, ND - to reconstruct precipitation and temperature at these sites throughout the Holocene. Annual precipitation reconstructed with these transfer functions at Moon Lake and Kettle Lake does not capture a severe, prolonged period of drought during the mid-Holocene as seen in many other proxy records from these sites and from the region. Reconciliation of these results involves both the autecology of Ambrosia and the inability of any pollen surface samples to capture seasonal and short-term variability in precipitation. Thus, the transfer functions correctly reconstruct periodic wet summers and a disturbance factor favouring Ambrosia, but miss the effects of reduced winter precipitation and increased frequency of severe drought. The problem revealed here may be more general to biomes with higher frequency disturbance regimes and more weedy species.


英文关键词grasslands Great Plains paleoclimate pollen transfer functions Ambrosia WAPLS
领域气候变化
收录类别SCI-E
WOS记录号WOS:000427011700014
WOS关键词PRAIRIE-FOREST ECOTONE ; CALIBRATION SET ; SURFACE-POLLEN ; QUANTITATIVE RECONSTRUCTION ; SUMMER TEMPERATURE ; INNER-MONGOLIA ; MOON LAKE ; VEGETATION ; PATTERNS ; MINNESOTA
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/36684
专题气候变化
作者单位1.Dartmouth Coll, Dept Geog, Fairchild Hall HB 6017, Hanover, NH 66506 USA;
2.Univ Minnesota, Dept Earth Sci, Minneapolis, MN USA;
3.Kansas State Univ, Dept Geog, Manhattan, KS 66506 USA;
4.Univ Maine, Climate Change Inst, Orono, ME USA
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GB/T 7714
Commerford, Julie L.,Grimm, Eric C.,Morris, Christopher J.,et al. Regional variation in Holocene climate quantified from pollen in the Great Plains of North America[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(4):1794-1807.
APA Commerford, Julie L.,Grimm, Eric C.,Morris, Christopher J.,Nurse, Andrea,Stefanova, Ivanka,&McLauchlan, Kendra K..(2018).Regional variation in Holocene climate quantified from pollen in the Great Plains of North America.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(4),1794-1807.
MLA Commerford, Julie L.,et al."Regional variation in Holocene climate quantified from pollen in the Great Plains of North America".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.4(2018):1794-1807.
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