Landscape heterogeneity and the biodiversity of Arctic stream communities : a habitat template analysis
Author Posting. © National Research Council Canada, 2005. This article is posted here by permission of National Research Council Canada for personal use, not for redistribution. The definitive version was published in Canadian Journal of Fisheries and Aquatic Sciences 62 (2005): 1905-1919, doi:10.11...
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Language: | English |
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/232 2023-05-15T14:51:59+02:00 Landscape heterogeneity and the biodiversity of Arctic stream communities : a habitat template analysis Huryn, Alexander D. Slavik, Karie A. Lowe, Rex L. Parker, Stephanie M. Anderson, Dennis S. Peterson, Bruce J. 2005-08-27 992248 bytes application/pdf https://hdl.handle.net/1912/232 en eng National Research Council Canada https://doi.org/10.1139/F05-100 Canadian Journal of Fisheries and Aquatic Sciences 62 (2005): 1905-1919 https://hdl.handle.net/1912/232 doi:10.1139/F05-100 Canadian Journal of Fisheries and Aquatic Sciences 62 (2005): 1905-1919 doi:10.1139/F05-100 Substratum freezing Nutrient supply Substratum instability Article 2005 ftwhoas https://doi.org/10.1139/F05-100 2022-05-28T22:56:47Z Author Posting. © National Research Council Canada, 2005. This article is posted here by permission of National Research Council Canada for personal use, not for redistribution. The definitive version was published in Canadian Journal of Fisheries and Aquatic Sciences 62 (2005): 1905-1919, doi:10.1139/F05-100. We predicted that substratum freezing and instability are major determinants of the variability of stream community structure in Arctic Alaska. Their effects were conceptualized as a two-dimensional habitat template that was assessed using a natural experiment based on five stream types (mountain-spring, tundra-spring, tundra, mountain, glacier). Detrended correspondence analysis (DCA) indicated distinct macroinvertebrate assemblages for each stream type. The contribution of functional feeding groups to assemblage biomass varied systematically among stream types, indicating that structure and function are linked. Assemblage position within a DCA biplot was used to assess factors controlling its structure. Springs separated from other stream types along a gradient of nutrient concentration and freezing probability. Glacier and mountain streams separated from springs and tundra streams along a gradient of substratum instability and freezing probability. Owing to differences in sources of discharge to streams, the effects of nutrients and substratum stability could not be separated from freezing. Although many factors likely contribute to the variability of Arctic stream communities, the major determinants may be conceptualized as a template structured by gradients in (i) nutrient supply and substratum freezing and (ii) substratum instability and substratum freezing. This template provides a basis for predicting the response of Arctic stream communities to climate change. Funding was provided by grants from the National Science Foundation (NSF DEB-9810222 and NSF OPP-9911278). Article in Journal/Newspaper Arctic Climate change glacier glacier* Tundra Alaska Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Arctic Canada Canadian Journal of Fisheries and Aquatic Sciences 62 8 1905 1919 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Substratum freezing Nutrient supply Substratum instability |
spellingShingle |
Substratum freezing Nutrient supply Substratum instability Huryn, Alexander D. Slavik, Karie A. Lowe, Rex L. Parker, Stephanie M. Anderson, Dennis S. Peterson, Bruce J. Landscape heterogeneity and the biodiversity of Arctic stream communities : a habitat template analysis |
topic_facet |
Substratum freezing Nutrient supply Substratum instability |
description |
Author Posting. © National Research Council Canada, 2005. This article is posted here by permission of National Research Council Canada for personal use, not for redistribution. The definitive version was published in Canadian Journal of Fisheries and Aquatic Sciences 62 (2005): 1905-1919, doi:10.1139/F05-100. We predicted that substratum freezing and instability are major determinants of the variability of stream community structure in Arctic Alaska. Their effects were conceptualized as a two-dimensional habitat template that was assessed using a natural experiment based on five stream types (mountain-spring, tundra-spring, tundra, mountain, glacier). Detrended correspondence analysis (DCA) indicated distinct macroinvertebrate assemblages for each stream type. The contribution of functional feeding groups to assemblage biomass varied systematically among stream types, indicating that structure and function are linked. Assemblage position within a DCA biplot was used to assess factors controlling its structure. Springs separated from other stream types along a gradient of nutrient concentration and freezing probability. Glacier and mountain streams separated from springs and tundra streams along a gradient of substratum instability and freezing probability. Owing to differences in sources of discharge to streams, the effects of nutrients and substratum stability could not be separated from freezing. Although many factors likely contribute to the variability of Arctic stream communities, the major determinants may be conceptualized as a template structured by gradients in (i) nutrient supply and substratum freezing and (ii) substratum instability and substratum freezing. This template provides a basis for predicting the response of Arctic stream communities to climate change. Funding was provided by grants from the National Science Foundation (NSF DEB-9810222 and NSF OPP-9911278). |
format |
Article in Journal/Newspaper |
author |
Huryn, Alexander D. Slavik, Karie A. Lowe, Rex L. Parker, Stephanie M. Anderson, Dennis S. Peterson, Bruce J. |
author_facet |
Huryn, Alexander D. Slavik, Karie A. Lowe, Rex L. Parker, Stephanie M. Anderson, Dennis S. Peterson, Bruce J. |
author_sort |
Huryn, Alexander D. |
title |
Landscape heterogeneity and the biodiversity of Arctic stream communities : a habitat template analysis |
title_short |
Landscape heterogeneity and the biodiversity of Arctic stream communities : a habitat template analysis |
title_full |
Landscape heterogeneity and the biodiversity of Arctic stream communities : a habitat template analysis |
title_fullStr |
Landscape heterogeneity and the biodiversity of Arctic stream communities : a habitat template analysis |
title_full_unstemmed |
Landscape heterogeneity and the biodiversity of Arctic stream communities : a habitat template analysis |
title_sort |
landscape heterogeneity and the biodiversity of arctic stream communities : a habitat template analysis |
publisher |
National Research Council Canada |
publishDate |
2005 |
url |
https://hdl.handle.net/1912/232 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic Climate change glacier glacier* Tundra Alaska |
genre_facet |
Arctic Climate change glacier glacier* Tundra Alaska |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences 62 (2005): 1905-1919 doi:10.1139/F05-100 |
op_relation |
https://doi.org/10.1139/F05-100 Canadian Journal of Fisheries and Aquatic Sciences 62 (2005): 1905-1919 https://hdl.handle.net/1912/232 doi:10.1139/F05-100 |
op_doi |
https://doi.org/10.1139/F05-100 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
62 |
container_issue |
8 |
container_start_page |
1905 |
op_container_end_page |
1919 |
_version_ |
1766323110174261248 |