The development of hydraulic and geomorphic complexity in recently formed streams in Glacier Bay National Park, Alaska
Abstract Geomorphic and hydraulic complexity within five streams representing 200 years of stream development were examined in Glacier Bay National Park, Alaska. Channel geomorphic units (CGUs) were mapped using a hierarchical approach, which defined stream habitat according to morphological and hyd...
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crwiley:10.1002/rra.1235 2024-06-02T08:07:00+00:00 The development of hydraulic and geomorphic complexity in recently formed streams in Glacier Bay National Park, Alaska Klaar, Megan J. Maddock, Ian Milner, Alexander M. 2009 http://dx.doi.org/10.1002/rra.1235 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frra.1235 https://onlinelibrary.wiley.com/doi/pdf/10.1002/rra.1235 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor River Research and Applications volume 25, issue 10, page 1331-1338 ISSN 1535-1459 1535-1467 journal-article 2009 crwiley https://doi.org/10.1002/rra.1235 2024-05-03T11:49:52Z Abstract Geomorphic and hydraulic complexity within five streams representing 200 years of stream development were examined in Glacier Bay National Park, Alaska. Channel geomorphic units (CGUs) were mapped using a hierarchical approach, which defined stream habitat according to morphological and hydraulic characteristics. Detailed hydraulic assessment within the geomorphic units allowed differences in hydraulic characteristics across the 200‐year chronosequence to be documented. Channel geomorphology and hydrology changed as stream age increased. Younger streams were dominated by fast flowing geomorphic units such as rapids and riffles with little hydraulic or landscape diversity. As stream age increased, slower flowing habitat units such as glides and pools became more dominant, resulting in increased geomorphic, hydraulic and landscape diversity. These results suggest that geomorphic and hydraulic complexity develop over time, creating habitat features likely to be favoured by instream biota, enhancing biodiversity and abundance. Copyright © 2009 John Wiley & Sons, Ltd. Article in Journal/Newspaper glacier Alaska Wiley Online Library Glacier Bay River Research and Applications 25 10 1331 1338 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Geomorphic and hydraulic complexity within five streams representing 200 years of stream development were examined in Glacier Bay National Park, Alaska. Channel geomorphic units (CGUs) were mapped using a hierarchical approach, which defined stream habitat according to morphological and hydraulic characteristics. Detailed hydraulic assessment within the geomorphic units allowed differences in hydraulic characteristics across the 200‐year chronosequence to be documented. Channel geomorphology and hydrology changed as stream age increased. Younger streams were dominated by fast flowing geomorphic units such as rapids and riffles with little hydraulic or landscape diversity. As stream age increased, slower flowing habitat units such as glides and pools became more dominant, resulting in increased geomorphic, hydraulic and landscape diversity. These results suggest that geomorphic and hydraulic complexity develop over time, creating habitat features likely to be favoured by instream biota, enhancing biodiversity and abundance. Copyright © 2009 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Klaar, Megan J. Maddock, Ian Milner, Alexander M. |
spellingShingle |
Klaar, Megan J. Maddock, Ian Milner, Alexander M. The development of hydraulic and geomorphic complexity in recently formed streams in Glacier Bay National Park, Alaska |
author_facet |
Klaar, Megan J. Maddock, Ian Milner, Alexander M. |
author_sort |
Klaar, Megan J. |
title |
The development of hydraulic and geomorphic complexity in recently formed streams in Glacier Bay National Park, Alaska |
title_short |
The development of hydraulic and geomorphic complexity in recently formed streams in Glacier Bay National Park, Alaska |
title_full |
The development of hydraulic and geomorphic complexity in recently formed streams in Glacier Bay National Park, Alaska |
title_fullStr |
The development of hydraulic and geomorphic complexity in recently formed streams in Glacier Bay National Park, Alaska |
title_full_unstemmed |
The development of hydraulic and geomorphic complexity in recently formed streams in Glacier Bay National Park, Alaska |
title_sort |
development of hydraulic and geomorphic complexity in recently formed streams in glacier bay national park, alaska |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1002/rra.1235 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frra.1235 https://onlinelibrary.wiley.com/doi/pdf/10.1002/rra.1235 |
geographic |
Glacier Bay |
geographic_facet |
Glacier Bay |
genre |
glacier Alaska |
genre_facet |
glacier Alaska |
op_source |
River Research and Applications volume 25, issue 10, page 1331-1338 ISSN 1535-1459 1535-1467 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/rra.1235 |
container_title |
River Research and Applications |
container_volume |
25 |
container_issue |
10 |
container_start_page |
1331 |
op_container_end_page |
1338 |
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1800752022897557504 |