The Development of Hydraulic and Geomorphic Complexity in Recently Formed Streams in Glacier Bay National Park, Alaska
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 ch...
Published in: | River Research and Applications |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
John Wiley & Sons
2009
|
Subjects: | |
Online Access: | http://eprints.worc.ac.uk/577/ http://www3.interscience.wiley.com/journal/121673908/abstract https://doi.org/10.1002/rra.1235 |
id |
ftunivworcester:oai:wrap.eprints.org:577 |
---|---|
record_format |
openpolar |
spelling |
ftunivworcester:oai:wrap.eprints.org:577 2023-05-15T16:20:28+02:00 The Development of Hydraulic and Geomorphic Complexity in Recently Formed Streams in Glacier Bay National Park, Alaska Klaar, Megan Maddock, Ian Milner, A.M. 2009-02-04 http://eprints.worc.ac.uk/577/ http://www3.interscience.wiley.com/journal/121673908/abstract https://doi.org/10.1002/rra.1235 unknown John Wiley & Sons Klaar, Megan, Maddock, Ian orcid:0000-0001-5072-8700 and Milner, A.M. (2009) The Development of Hydraulic and Geomorphic Complexity in Recently Formed Streams in Glacier Bay National Park, Alaska. River Research and Applications. ISSN 1535-1467 doi:10.1002/rra.1235 G Geography (General) Q Science (General) GE Environmental Sciences GB Physical geography Article PeerReviewed 2009 ftunivworcester https://doi.org/10.1002/rra.1235 2022-03-02T19:57:14Z 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. Article in Journal/Newspaper glacier Alaska University of Worcester: Worcester Research and Publications Glacier Bay River Research and Applications 25 10 1331 1338 |
institution |
Open Polar |
collection |
University of Worcester: Worcester Research and Publications |
op_collection_id |
ftunivworcester |
language |
unknown |
topic |
G Geography (General) Q Science (General) GE Environmental Sciences GB Physical geography |
spellingShingle |
G Geography (General) Q Science (General) GE Environmental Sciences GB Physical geography Klaar, Megan Maddock, Ian Milner, A.M. The Development of Hydraulic and Geomorphic Complexity in Recently Formed Streams in Glacier Bay National Park, Alaska |
topic_facet |
G Geography (General) Q Science (General) GE Environmental Sciences GB Physical geography |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Klaar, Megan Maddock, Ian Milner, A.M. |
author_facet |
Klaar, Megan Maddock, Ian Milner, A.M. |
author_sort |
Klaar, Megan |
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 |
John Wiley & Sons |
publishDate |
2009 |
url |
http://eprints.worc.ac.uk/577/ http://www3.interscience.wiley.com/journal/121673908/abstract https://doi.org/10.1002/rra.1235 |
geographic |
Glacier Bay |
geographic_facet |
Glacier Bay |
genre |
glacier Alaska |
genre_facet |
glacier Alaska |
op_relation |
Klaar, Megan, Maddock, Ian orcid:0000-0001-5072-8700 and Milner, A.M. (2009) The Development of Hydraulic and Geomorphic Complexity in Recently Formed Streams in Glacier Bay National Park, Alaska. River Research and Applications. ISSN 1535-1467 doi:10.1002/rra.1235 |
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 |
_version_ |
1766008385523679232 |