期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 111, 期 2, 页码 723-727出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1315800111
关键词
ecological threshold; frost tolerance; Landsat; coastal wetlands
资金
- National Aeronautics and Space Administration Climate and Biological Response Program [NNX11AO94G]
- National Science Foundation Macrosystems Biology Program [EF 1065821, 1065098]
- NASA [139727, NNX11AO94G] Funding Source: Federal RePORTER
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1065098] Funding Source: National Science Foundation
- Emerging Frontiers
- Direct For Biological Sciences [1065821] Funding Source: National Science Foundation
Regional warming associated with climate change is linked with altered range and abundance of species and ecosystems worldwide. However, the ecological impacts of changes in the frequency of extreme events have not been as well documented, especially for coastal and marine environments. We used 28 y of satellite imagery to demonstrate that the area of mangrove forests has doubled at the northern end of their historic range on the east coast of Florida. This expansion is associated with a reduction in the frequency of extreme cold events (days colder than -4 degrees C), but uncorrelated with changes in mean annual temperature, mean annual precipitation, and land use. Our analyses provide evidence for a threshold response, with declining frequency of severe cold winter events allowing for poleward expansion of mangroves. Future warming may result in increases in mangrove cover beyond current latitudinal limits of mangrove forests, thereby altering the structure and function of these important coastal ecosystems.
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