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Interactions Between instream wood and Hydrogeomorphic Development within Recently Deglaciated Streams in Glacier Bay National Park, Alaska

Klaar, Megan, Hill, D., Maddock, Ian ORCID: https://orcid.org/0000-0001-5072-8700 and Milner, A.M. (2011) Interactions Between instream wood and Hydrogeomorphic Development within Recently Deglaciated Streams in Glacier Bay National Park, Alaska. Geomorphology, 130 (3-4). pp. 208-220. ISSN 0169-555X

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Abstract

The physical and structural characteristics of instream wood were examined within five streams that
represented 200 years of stream development following glacial recession within Glacier Bay National Park,
Alaska. Wood characteristics altered with watershed age as terrestrial succession progressed and wood was
recruited into the riverine environment. The influence of wood characteristics on the development of
geomorphic diversity and hydraulic variability within the streams were assessed using detailed habitat
mapping, sediment analysis, and hydraulic assessment using an Acoustic Doppler Current Profiler at a number
of transects upstream, downstream, and adjacent to wood. Results show that the size, complexity, and
orientation of wood accumulations are the main drivers in determining the degree of influence instream
wood have on stream geomorphic and hydraulic complexity. Adjacent terrestrial vegetation must be of a
sufficient stage of development (in terms of size and maturity) in order to elicit significant hydrogeomorphic
changes to benefit aquatic biota such as fish, macroinvertebrates, and plants.

Item Type: Article
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Uncontrolled Discrete Keywords: hydraulic and geomorphic complexity, habitat development, Ecohydraulics, ADCP, SERG
Subjects: Q Science > Q Science (General)
G Geography. Anthropology. Recreation > GB Physical geography
Divisions: College of Health, Life and Environmental Sciences > School of Science and the Environment
Depositing User: Ian Maddock
Date Deposited: 07 Jun 2011 12:56
Last Modified: 31 Jul 2020 14:10
URI: https://eprints.worc.ac.uk/id/eprint/1354

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