Effects Of Urbanization On Benthic Macroinvertebrate Communities In Streams Anchorage Alaska PDF Download
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Author | : Robert T. Ourso |
Publisher | : |
Total Pages | : |
Release | : 2001 |
Genre | : Benthic animals |
ISBN | : |
Download Effects of Urbanization on Benthic Macroinvertebrate Communities in Streams, Anchorage, Alaska Book in PDF, ePub and Kindle
Author | : William Acevedo |
Publisher | : |
Total Pages | : 212 |
Release | : 2006 |
Genre | : Land use, Urban |
ISBN | : |
Download Rates, Trends, Causes, and Consequences of Urban Land-use Change in the United States Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 440 |
Release | : 2006 |
Genre | : Geology |
ISBN | : |
Download U.S. Geological Survey Professional Paper Book in PDF, ePub and Kindle
Author | : Kevin J. Morse |
Publisher | : |
Total Pages | : 238 |
Release | : 2005 |
Genre | : Atrazine |
ISBN | : |
Download The Effects of Urbanization on the Health of Fish and Benthic Macroinvertebrate Communities in the Upper Cahaba River Watershed Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 1004 |
Release | : 2004 |
Genre | : Government publications |
ISBN | : |
Download Monthly Catalog of United States Government Publications Book in PDF, ePub and Kindle
Author | : Emily Yvonne Campbell |
Publisher | : |
Total Pages | : 204 |
Release | : 2010 |
Genre | : Benthic animals |
ISBN | : |
Download Macroinvertebrate Community Response to Timber Harvest and Spawning Salmon in Southeast Alaska Rainforest Streams Book in PDF, ePub and Kindle
This study examined the separate and interactive effects of timber harvest and salmon spawning on benthic macroinvertebrate community composition and distribution in Southeast Alaska streams. I predicted that 1) spawning salmon disturb benthic macroinvertebrate communities in riffles habitats and increase invertebrate drift, 2) the magnitude of spawning salmon disturbance is greater in highly harvested watersheds relative to less-impacted streams and, 3) that macroinvertebrates utilize refugia habitats such as backwater pools, stream edges, and the hyporheic zone during the salmon run to avoid riffle epilithic disturbances. Macroinvertebrates were collected quantitatively and qualitatively in multiple habitats during salmon runs on Prince of Wales Island, Alaska in 2007 and 2008. Spawning salmon caused significant declines in riffle macroinvertebrate density, biomass, and richness and the magnitude of this effect increased with increasing timber harvest intensity. In less-impacted streams, macroinvertebrate density and biomass increased. Macroinvertebrate density and richness significantly increased in stream drift during spawning. Stream edges and the hyporheic zone appear to offer refugia for macroinvertebrates during salmon spawning. This study demonstrated that timber harvest activities intensify the effects of spawning salmon disturbance on macroinvertebrate communities and that macroinvertebrates may utilize refugia in response to salmon disturbance and in Southeast Alaska streams.
Author | : |
Publisher | : |
Total Pages | : 588 |
Release | : 2010 |
Genre | : |
ISBN | : |
Download Hatcher Pass Recreational Area Access, Trails, and Transit Facilities Book in PDF, ePub and Kindle
Author | : Kristen A. Beckert |
Publisher | : |
Total Pages | : 76 |
Release | : 2004 |
Genre | : Stream ecology |
ISBN | : |
Download The Effects of Seasonal Change and Urbanization on Macroinvertebrate Communities in Streams Book in PDF, ePub and Kindle
Author | : Larry R. Brown |
Publisher | : |
Total Pages | : 444 |
Release | : 2005 |
Genre | : Science |
ISBN | : |
Download Effects of Urbanization on Stream Ecosystems Book in PDF, ePub and Kindle
As the world's population continues to grow, the continual development of riparia areas stresses stream ecosystems. These collected articles aim to provide researchers, aquatic resource managers, land use planners and others with the results of recent studies of the effects of urbanization on stream ecosystems. By presenting fifteen case studies and five regional comparisons, the editors of these proceedings hope to help protect streams form the damages of what they recognize as inevitable urbanization. Foci of the studies include the effects of urbanization on biological diversity and populations, geology, hydrology, and economics.
Author | : M. Jungwirth |
Publisher | : Springer Science & Business Media |
Total Pages | : 491 |
Release | : 2012-12-06 |
Genre | : Technology & Engineering |
ISBN | : 9401141649 |
Download Assessing the Ecological Integrity of Running Waters Book in PDF, ePub and Kindle
The assessment of the ecological integrity of running waters is a prerequisite to an understanding of the effects of human alterations. The evaluation of degradation processes provides key information on how to avoid further negative impacts. The success of future conservation, mitigation and restoration activities will rely on sound assessment methodologies and their ecological relevance and applicability. Assessment methodologies are therefore an integral part of sustainable river management. This book synthesizes and discusses state-of-the-art experiences in assessment methodologies. Including the latest knowledge on structures, processes and functions of running waters as a fundamental basis for developing adequate assessment methods, the book focuses on method development, application, and in particular on integrated assessment methods. This book is directed at scientists and managers with the aim of more effective preservation, restoration and maintenance of the ecological integrity of running water ecosystems.