Coastal Habitats of the Elwha River, Washington
Author | : Jeffrey J. Duda |
Publisher | : |
Total Pages | : 276 |
Release | : 2011 |
Genre | : Coastal ecology |
ISBN | : |
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Author | : Jeffrey J. Duda |
Publisher | : |
Total Pages | : 276 |
Release | : 2011 |
Genre | : Coastal ecology |
ISBN | : |
Author | : Jonathan A. Warrick |
Publisher | : |
Total Pages | : 32 |
Release | : 2015-02-16 |
Genre | : |
ISBN | : 9781297053092 |
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author | : Christopher S. Magirl |
Publisher | : U.S. Department of the Interior, U.S. Geological Survey |
Total Pages | : 36 |
Release | : 2011-09-07 |
Genre | : |
ISBN | : |
Chapter 4 of Duda, J.J., J.A. Warrick, and C.S. Magirl, eds., Coastal habitats of the Elwha River, Washington – Biological and physical patterns and processes prior to dam removal This report includes chapters that summarize the results of multidisciplinary studies to quantify and characterize the current (2011) status and baseline conditions of the lower Elwha River, its estuary, and the adjacent nearshore ecosystems prior to the historic removal of two long-standing dams that have strongly influenced river, estuary, and nearshore conditions. The studies were conducted as part of the U.S. Geological Survey Multi-disciplinary Coastal Habitats in Puget Sound (MD-CHIPS) project. Chapter 4 details a series of hydrological data collected by the MD-CHIPS Elwha project. These include groundwater monitoring, surface water-groundwater interactions in the estuary, an estimated surface-water budget to the estuary, and a series of temperature and salinity measurements.
Author | : Christiana R. Czuba |
Publisher | : U.S. Department of the Interior, U.S. Geological Survey |
Total Pages | : 20 |
Release | : 2011-09-07 |
Genre | : |
ISBN | : |
Chapter 2 of Duda, J.J., J.A. Warrick, and C.S. Magirl, eds., Coastal habitats of the Elwha River, Washington – Biological and physical patterns and processes prior to dam removal This report includes chapters that summarize the results of multidisciplinary studies to quantify and characterize the current (2011) status and baseline conditions of the lower Elwha River, its estuary, and the adjacent nearshore ecosystems prior to the historic removal of two long-standing dams that have strongly influenced river, estuary, and nearshore conditions. The studies were conducted as part of the U.S. Geological Survey Multi-disciplinary Coastal Habitats in Puget Sound (MD-CHIPS) project. In chapter 2, the volume and timing of sediment delivery to the estuary and nearshore are discussed, providing an overview of the sediment stored in the two reservoirs and the expected erosion mechanics of the reservoir sediment deposits after removal of the dams.
Author | : Barbara Blackie |
Publisher | : |
Total Pages | : 246 |
Release | : 2002 |
Genre | : Birds |
ISBN | : |
If two dams on the Elwha River are removed, the ecosystem will be open to the downstream flow of sediments and the upstream flow of marine nutrients in the form of anadromous fish. Nutrient enrichment may influence trophic dynamics of the entire ecosystem, extending beyond the aquatic boundary. I assessed the current relative densities of five river dependent bird species on the Elwha and three other rivers in Olympic National Park in Washington State to describe pretreatment reference conditions as a basis for assessment of post-treatment ecosystem responses. I also compared the amount of time that non-breeding and failed-breeding (NBIFB) female Harlequin Ducks (Histrionicus histrionicus) spent foraging on different rivers and on adjacent coastal habitat to determine whether time spent foraging could be used as an indicator of habitat preference. Surveys of key river-dependent bird species were conducted on two rivers in 1996 and on four rivers in 1997. The benthivorous foraging guild was represented by the American Dipper (Cinclus mexicanus), Harlequin Duck and Spotted Sandpiper (Actitis macularia). Harlequin Ducks had higher relative densities on the Elwha than the Hoh and Soleduck Rivers, but densities were similar to those found on the Duckabush River. There were greater numbers of Harlequin Ducks per linear kilometer above the two dams than between or below them. Relative densities of American Dippers on the Elwha were lower than on the Duckabush but not statistically different from those on the Hoh and Soleduck Rivers. Spotted Sandpipers had similar densities on all rivers except the Soleduck River where their numbers were lower. The piscivorous foraging guild was represented by the Common Merganser (Mergus merganser) and Belted Kingfisher (Ceryle alcyon). Common Mergansers were relatively more abundant on the Elwha River than on the other rivers due to their high numbers below the lowest dam where wild and hatchery anadromous fish are present. Belted Kingfisher relative densities showed no significant differences between rivers as they were found in low numbers on all rivers. Using relative abundances of some river dependent bird species as indicators of ecosystem recovery after dam removal may be useful tool surveys are continued throughout the process. In spite of lack of anadromy, the Elwha River ecosystem supports a significant population of Harlequin Ducks when compared to other Olympic rivers. American Dippers are also well represented on the Elwha River, specifically above the dams. Because of their relative abundance, these benthivore populations may have a measurable, upriver response to any nutrient enrichment as a result of dam removal and both species should be monitored. The Duckabush River, with a similar Harlequin Duck relative abundance in the lower reaches, should be monitored concurrently to account for region-wide population shifts of that species over time. The Common Merganser may be the best indicator of below dam effects on the Elwha River and numbers could be compared with the lower Soleduck River, however alternative survey methods, specifically drift boat surveys, should be considered to improve count accuracy. During June and July of 1997, time-activity budget data were gathered on NB/FB Harlequin Ducks on the Elwha, Duckabush and Dosewallips Rivers and at their mouths and at the mouth of Salt Creek. Time spent foraging by NBIFB Harlequin Ducks was similar among the three rivers examined. NB/FB Harlequin Ducks on the spent 33.1%, 33.2%, 36.4% of their time feeding, on the Elwha, Duckabush Dosewallips Rivers respectively. The Elwha River system was the only system where time activity budgets could be compared between river and adjacent coastal habitats. Time spent foraging at the mouth of the Elwha was significantly higher (52.5%) than on the Elwha River proper. Food availability on river habitat may be a factor in NB/FB females' decision to remain on river habitat during the breeding season or migrate to the ocean. Time-activity budgets provide information on Harlequin Duck life history but a better understanding of their foraging behavior and the role of food availability in habitat selection is needed before time-activity budgets alone can be used as a tool for assessing ecosystem response to dam removal. Time-activity budget data collected concurrently with food availability data from field studies, along with energetics and food preference data from field or laboratory studies may establish a clearer link between time spent feeding and habitat quality and preferences.
Author | : United States. National Park Service |
Publisher | : |
Total Pages | : 530 |
Release | : 1996 |
Genre | : Anadromous fishes |
ISBN | : |
Author | : Jeffrey J. Duda |
Publisher | : |
Total Pages | : 12 |
Release | : 2011 |
Genre | : Dam retirement |
ISBN | : |
Author | : Jun Cheng |
Publisher | : World Scientific |
Total Pages | : 3129 |
Release | : 2015-04-23 |
Genre | : Technology & Engineering |
ISBN | : 981468998X |
This Proceedings contains over 260 papers on cutting-edge research presented at the eighth international Symposium on Coastal Sediment Processes, held May 11 - 15, 2015, in San Diego, California, USA. This technical specialty conference was devoted to promoting an interdisciplinary exchange of state-of-the-art knowledge among researchers in the fields of coastal engineering, geology, oceanography, and related disciplines, with the theme of Understanding and Working with Nature.Focusing on the physical aspects of the sediment processes in various coastal environments, this Proceedings provides findings from the latest research and newest engineering applications. Sessions covered a wide range of topics including barrier islands, beaches, climate and sea level, cohesive and noncohesive sediments, coastal bluffs, coastal marsh, dredged sediments, inlet and navigation channels, regional sediment management, river deltas, shore protection, tsunamis, and vegetation-sediment interaction. Several special sessions included: Relevant science for changing coastlines: A Tribute to Gary Griggs; North Atlantic Coast Comprehensive Study and post-super-storm Sandy work; long-term coastal evolution; barrier islands of Louisiana; sea-level rise and super storms in a warming world; predicting decadal coastal geomorphic evolution; and contrasting Pacific coastal behavior with El Niño Southern Oscillation (ENSO), are also featured.
Author | : Lynda Mapes |
Publisher | : Mountaineers Books |
Total Pages | : 474 |
Release | : 2013-03-05 |
Genre | : Nature |
ISBN | : 1594857350 |
CLICK HERE to download the first chapter from Elwha: A River Reborn (Provide us with a little information and we'll send your download directly to your inbox) A compelling exploration of one of the largest dam removal projects in the world—and the efforts to save a stunning Northwest ecosystem * Co-published with The Seattle Times * 125 color photographs, including rare historic images * Dam removal started in September 2011 while restoration work continues today In the fall of 2011, the Times was on hand when a Montana contractor removed the first pieces from two concrete dams on the Elwha River which cuts through the Olympic range. It was the beginning of the largest dam removal project ever undertaken in North America—one dam was 200 feet tall—and the start of an unprecedented attempt to restore an entire ecosystem. More than 70 miles of the Elwha and its tributaries course from the mountain headwaters to clamming beaches on the Strait of Juan de Fuca. Through interviews, field work, archival and historical research, and photojournalism, The Seattle Times has explored and reported on the dam removal, the Elwha ecosystem, its industrialization, and now its renewal. Elwha: A River Reborn is based on these feature articles. Richly illustrated with stunning photographs, as well as historic images, graphics, and a map, Elwha tells the interwoven stories of this region. Meet the Lower Elwha Klallam tribe, who anxiously await the return of renowned salmon runs savored over the generations in the stories of their elders. Discover the biologists and engineers who are bringing the dams down and laying the plan for renewal, including an unprecedented revegetation effort that will eventually cover more than 700 acres of mudflats. When the dam started to come down in Fall 2011—anticipated for more than 20 years since Congress passed the Elwha Restoration Act—it was the beginning of a $350 million project observed around the world. Elwha: A River Reborn is inspiring and instructive, a triumphant story of place, people, and environment striving to come together. Winner of the Nautilus Awards 2014 "Better Books for a Better World" Silver Award!
Author | : |
Publisher | : |
Total Pages | : 464 |
Release | : 1994 |
Genre | : Anadromous fishes |
ISBN | : |