Potential Impact of Global Climate Change on Species Richness of Long‐Distance Migrants

Potential Impact of Global Climate Change on Species Richness of Long‐Distance Migrants Abstract: Little evidence exists demonstrating that global climate change leads to systematic changes in the structure of ecological communities. For avian communities, one would expect warmer winters to lead to declines in numbers of long‐distance migrants if resident birds benefit from warmer winters and impose increasing competitive pressure on migrants. To study the potential influence of global climate change on long‐distance migrants, we correlated the number of all species of land birds and the number and proportion of long‐distance migrants, short‐distance migrants, and residents in 595 grid cells across Europe. We used mean temperature of the coldest month, mean spring temperature, and spring precipitation as measures of climatic conditions in winter and during the breeding period. The number and proportion of long‐distance migrants decreased with increasing winter temperature, decreasing spring temperature, and increasing spring precipitation. We used this spatial relationship between bird community structure and climate in Europe to make predictions about changes in bird communities of the Lake Constance region, Central Europe, between two census periods ( 1980–1981 and 1990–1992 ). Winter temperature in this region increased significantly between the two censuses, whereas spring temperature and precipitation did not change. As predicted from the models, the proportion of long‐distance migrants decreased and the number and proportion of short‐distance migrants and residents increased between the two censuses. The significant declines of the long‐distance migrants in the Lake Constance region are of a magnitude that can be explained by the observed climate change. Our results suggest that increasingly warmer winters may pose a more severe threat to long‐distance migrants than to the other bird groups. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Conservation Biology Wiley

Potential Impact of Global Climate Change on Species Richness of Long‐Distance Migrants

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Publisher
Wiley
Copyright
Copyright © 2003 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0888-8892
eISSN
1523-1739
D.O.I.
10.1046/j.1523-1739.2003.01389.x
Publisher site
See Article on Publisher Site

Abstract

Abstract: Little evidence exists demonstrating that global climate change leads to systematic changes in the structure of ecological communities. For avian communities, one would expect warmer winters to lead to declines in numbers of long‐distance migrants if resident birds benefit from warmer winters and impose increasing competitive pressure on migrants. To study the potential influence of global climate change on long‐distance migrants, we correlated the number of all species of land birds and the number and proportion of long‐distance migrants, short‐distance migrants, and residents in 595 grid cells across Europe. We used mean temperature of the coldest month, mean spring temperature, and spring precipitation as measures of climatic conditions in winter and during the breeding period. The number and proportion of long‐distance migrants decreased with increasing winter temperature, decreasing spring temperature, and increasing spring precipitation. We used this spatial relationship between bird community structure and climate in Europe to make predictions about changes in bird communities of the Lake Constance region, Central Europe, between two census periods ( 1980–1981 and 1990–1992 ). Winter temperature in this region increased significantly between the two censuses, whereas spring temperature and precipitation did not change. As predicted from the models, the proportion of long‐distance migrants decreased and the number and proportion of short‐distance migrants and residents increased between the two censuses. The significant declines of the long‐distance migrants in the Lake Constance region are of a magnitude that can be explained by the observed climate change. Our results suggest that increasingly warmer winters may pose a more severe threat to long‐distance migrants than to the other bird groups.

Journal

Conservation BiologyWiley

Published: Apr 1, 2003

References

  • Biodiversity of the pelagic ocean.
    Angel, Angel
  • Changes in species abundance, distribution, and diversity in a central European bird community.
    Böhning‐Gaese, Böhning‐Gaese; Bauer, Bauer
  • Clouds, precipitation and temperature range.
    Dai, Dai; Del Genio, Del Genio; Fung, Fung
  • Direct and indirect effects of climate change on St. John's wort, Hypericum perforatum L . ( Hypericaceae ).
    Fox, Fox; Ribeiro, Ribeiro; Brown, Brown; Masters, Masters; Clarke, Clarke
  • Land surface processes and Sahel climate.
    Nicholson, Nicholson
  • Individualistic responses of bird species to environmental change.
    Taper, Taper; Böhning‐Gaese, Böhning‐Gaese; Brown, Brown

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