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Changes in atmospheric circulation patterns affect midcontinent wetlands sensitive to climate

Limnology and Oceanography

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, , , and

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Abstract

Twenty-seven years of data from midcontinent wetlands indicate that the response of these wetlands to extremes in precipitation-drought and deluge-persists beyond the extreme events. Chemical changes transcend such simple relations as increased salinity during dry periods because drought provides mechanisms for removal of salt by deflation and seepage to groundwater. Inundation of vegetation zones including rooted or floating mats of cattail (Typha glauca) can stimulate sulfate reduction and shift the anion balance from sulfate to bicarbonate dominance. Disruptions in the circulation of moisture-laden air masses over the midcontinent, as in the drought of 1988 and the deluge of 1993, have a major effect on these wetlands, which are representatives of the primary waterfowl breeding habitat of the continent.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Changes in atmospheric circulation patterns affect midcontinent wetlands sensitive to climate
Series title:
Limnology and Oceanography
Volume
41
Issue:
5
Year Published:
1996
Language:
English
Contributing office(s):
Northern Prairie Wildlife Research Center
Description:
p. 864-870
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Limnology and Oceanography
First page:
864
Last page:
870
Number of Pages:
6