Ecological Patterns Along Two Alpine Glacial Streams in the Fitzpatrick Wilderness, Wind River Range, USA
| Autor: | M. Freestone, Christopher T. Robinson, C. Thompson, Erica David |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Western North American Naturalist. 73:137-147 |
| ISSN: | 1944-8341 1527-0904 |
| Popis: | Most alpine glaciers worldwide are receding rapidly, revealing new streams to be colonized by aquatic organisms. Several major questions are whether these new streams are colonized by aquatic organisms, how fast this colonizing occurs, which organisms are colonizing, and what factors constrain dispersal. We examined longitudinal patterns (over a length of 5 km) in physicochemistry, as well as periphyton and macroinvertebrate composition in 2 glacier streams (Dinwoody, Gannett) in the Wind River Range wilderness, home to the few remaining glaciers in the contiguous USA. We found that newly emerged streams near the glacial snout were inhabited by periphyton and macroinvertebrates, suggesting rapid colonization by biota. Longitudinal (distance from the glacier) patterns were documented in water temperature (increasing), particulate organic carbon (decreasing), particulate phosphorus (decreasing), and benthic organic matter (increasing in Dinwoody). Macroinvertebrate total density and operational ta... |
| Databáze: | OpenAIRE |
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