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Predicting Waterbird Nest Distributions On The Yukon Kuskokwim Delta Of Alaska
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Book Synopsis Predicting Waterbird Nest Distributions on the Yukon-Kuskokwim Delta of Alaska by : Sarah Therese Saalfeld
Download or read book Predicting Waterbird Nest Distributions on the Yukon-Kuskokwim Delta of Alaska written by Sarah Therese Saalfeld and published by . This book was released on 2014 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: A first step in evaluating the potential effects of climate-mediated changes on waterbird species within the Yukon-Kuskokwim Delta is to determine the current location of important nesting areas and understand the importance of environmental variables associated with nest density. This report summarizes the methods and results of this first step. It summarizes locations of waterbirds of fifteen species using data collected between 1985 and 2013.
Book Synopsis Abundance and Trend of Waterbirds on Alaska's Yukon-Kuskokwim Delta Coast Based on 1988 to 2006 Aerial Surveys by : Robert M. Platte
Download or read book Abundance and Trend of Waterbirds on Alaska's Yukon-Kuskokwim Delta Coast Based on 1988 to 2006 Aerial Surveys written by Robert M. Platte and published by . This book was released on 2006 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary of aerial survey observations from 1988 to 2006 that collected abundance, trend, and distribution of waterbird nesting populations in the Yukon-Kuskokwim Delta. Surveys were conducted from the mouth of the Yukon River in the north to Kuskokwim Bay in the south and extended 50 km inland.
Book Synopsis Abundance and Trend of Waterbirds on Alaska's Yukon-Kuskokwim Delta Coast Based on 1988 to 2005 Aerial Surveys by : Robert M. Platte
Download or read book Abundance and Trend of Waterbirds on Alaska's Yukon-Kuskokwim Delta Coast Based on 1988 to 2005 Aerial Surveys written by Robert M. Platte and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary of aerial survey observations from 1988 to 2005 that collected abundance, trend, and distribution of waterbird nesting populations in the Yukon-Kuskokwim Delta. Surveys were conducted from the mouth of the Yukon River in the north to Kuskokwim Bay in the south and extended 50 km inland.
Book Synopsis The Influence of Fall Storms on Nest Densities of Geese and Eiders on the Yukon-Kuskokwim Delta of Alaska by : Sarah Therese Saalfeld
Download or read book The Influence of Fall Storms on Nest Densities of Geese and Eiders on the Yukon-Kuskokwim Delta of Alaska written by Sarah Therese Saalfeld and published by . This book was released on 2015 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: This final project report summarizes the methods and findings from the investigation of the impacts of fall storms on waterbird nest densities on the outer coast of the Yukon Kuskokwim Delta of Alaska. The purpose is to understand the potential effects of climate changes, such as sea level rises and increased storm frequency and intensity to waterbird populations and breeding habitat. The authors investigated the short-term and long-term effects of storm surges to geese and eider species that commonly breed in the delta. Those species studies in this report are cackling goose, emperor goose, black brant, greater white-fronted goose, spectacles eider, common eider. The authors compared nest densities in relation to magnitude of storms that occurred in the preceding fall between 2000 and 2013, and modeled nest densities using random forests in relation to the time-integrated flood index for modeled storms and for other environmental covariates.
Book Synopsis Relative Abundance, Distribution, and Trends of Waterbirds from Aerial Breeding Pair Surveys, 1988 to 2004, on the Coastal Zone of the Yukon Kuskokwim Delta, Alaska by : Robert M. Platte
Download or read book Relative Abundance, Distribution, and Trends of Waterbirds from Aerial Breeding Pair Surveys, 1988 to 2004, on the Coastal Zone of the Yukon Kuskokwim Delta, Alaska written by Robert M. Platte and published by . This book was released on 2005 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Simulating Distance Sampling to Estimate Nest Abundance on the Yukon-Kuskokwim Delta, Alaska by : Elaine Gallenberg
Download or read book Simulating Distance Sampling to Estimate Nest Abundance on the Yukon-Kuskokwim Delta, Alaska written by Elaine Gallenberg and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Fish and Wildlife Service currently conducts annual surveys to estimate bird nest abundance on the Yukon-Kuskokwim Delta, Alaska. The current method involves intensive searching on large plots with the goal of finding every nest on the plot. Distance sampling is a well-established transect-based method to estimate density or abundance that accounts for imperfect detection of objects. It relies on estimating the probability of detecting an object given its distance from the transect line, or the detection function. Simulations were done using R to explore whether distance sampling methods on the Yukon-Kuskokwim Delta could produce reliable estimates of nest abundance. Simulations were executed both with geographic strata based on estimated Spectacled Eider (Somateria fischeri) nest densities and without stratification. Simulations with stratification where more effort was allotted to high density areas tended to be more precise, but lacked the property of pooling robustness and assumed stratum boundaries would not change over time. Simulations without stratification yielded estimates with relatively low bias and variances comparable to current estimation methods. Distance sampling appears to be a viable option for estimating the abundance of nests on the Yukon-Kuskokwim Delta.
Book Synopsis Population Dynamics of Greater Scaup Breeding on the Yukon-Kuskokwim Delta, Alaska by : Paul Leroy Flint
Download or read book Population Dynamics of Greater Scaup Breeding on the Yukon-Kuskokwim Delta, Alaska written by Paul Leroy Flint and published by . This book was released on 2006 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Populations of greater scaup (Aythya marila) remained relatively stable during a period when populations of lesser scaup (A. affinis) have declined from historic levels. To assist in describing these differences in population trends, from 1991 through 2000, we studied survival, nesting, ecology, and productivity of greater scaup on the Yukon-Kuskokwim Delta (Y-K Delta), Alaska, to develop a model of population dynamics. We located nests, radio-marked females for renesting studies, estimated duckling survival, and leg-banded females to examine nest site fidelity and annual survival"--Page 1.
Book Synopsis Waterbird Abundance and Distribution on Yukon Delta National Wildlife Refuge, Alaska by : Robert M. Platte
Download or read book Waterbird Abundance and Distribution on Yukon Delta National Wildlife Refuge, Alaska written by Robert M. Platte and published by . This book was released on 1993 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Abundance and Trend of Waterbirds on Alaska's Yukon-Kuskokwim Delta Coast Based on 1988 to 2007 Aerial Surveys by : Robert M. Platte
Download or read book Abundance and Trend of Waterbirds on Alaska's Yukon-Kuskokwim Delta Coast Based on 1988 to 2007 Aerial Surveys written by Robert M. Platte and published by . This book was released on 2007 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Waterfowl Population Status written by and published by . This book was released on with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Status of Waterfowl and Fall Flight Forecasts by :
Download or read book Status of Waterfowl and Fall Flight Forecasts written by and published by . This book was released on 1989 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population Size and Production of Geese Nesting on the Yukon-Kuskokwim Delta, Alaska by : Robert A. Stehn
Download or read book Population Size and Production of Geese Nesting on the Yukon-Kuskokwim Delta, Alaska written by Robert A. Stehn and published by . This book was released on 1994 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population Size and Production of Geese and Eiders Nesting on the Yukon-Kuskokwim Delta, Alaska in 1997 by : Timothy Dale Bowman
Download or read book Population Size and Production of Geese and Eiders Nesting on the Yukon-Kuskokwim Delta, Alaska in 1997 written by Timothy Dale Bowman and published by . This book was released on 1997 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Production of Geese Nesting on the Yukon-Kuskokwim Delta, Alaska by :
Download or read book Production of Geese Nesting on the Yukon-Kuskokwim Delta, Alaska written by and published by . This book was released on 1990 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ground-sampling survey estimating number of eggs, total nests, and number of active nests for cackling Canada geese, emperor geese, greater white-fronted geese, and spectacled eider.
Book Synopsis Relative Abundance and Trends of Waterbirds from Aerial Breeding Pair Surveys, 1988 to 2002, on the Coastal Zone of the Yukon Kuskokwim Delta, Alaska by : Robert M. Platte
Download or read book Relative Abundance and Trends of Waterbirds from Aerial Breeding Pair Surveys, 1988 to 2002, on the Coastal Zone of the Yukon Kuskokwim Delta, Alaska written by Robert M. Platte and published by . This book was released on 2003 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nest Population Size and Potential Production of Geese and Spectacled Eiders on the Yukon-Kuskokwim Delta, Alaska, 1985-2011 by : Julian B. Fischer
Download or read book Nest Population Size and Potential Production of Geese and Spectacled Eiders on the Yukon-Kuskokwim Delta, Alaska, 1985-2011 written by Julian B. Fischer and published by . This book was released on 2011 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides statistical data from ground-based surveys taken to estimate numbers of nests and eggs of geese and eiders in the Yukon-Kuskokwim delta from 1985 to 2011. Of 85 plots, 82 were sampled in June 2011 in a ground survey in the Hazen Bay coastal region (from Kigigak Island to Kashunuk River). Complete statistics are given for cackling goose, emperor goose, greater white-fronted goose, black brant, tundra swan, sandhill crane, spectacled eider, common eider, glaucous gull, mew gull, Sabine's gull, arctic tern, red-throated loon, and Pacific loon. Additional statistics (on nest initiation and hatch date) are given for greater scaup/long-tailed duck, pintail/shoveler/mallard/teal, and small shorebirds and statistics for fox and vole signs.
Book Synopsis Nesting Biology of the Spectacled Eider Somatera Fischeri (Brandt) on the Yukon-Kuskokwim Delta, Alaska by : Christian P. Dau
Download or read book Nesting Biology of the Spectacled Eider Somatera Fischeri (Brandt) on the Yukon-Kuskokwim Delta, Alaska written by Christian P. Dau and published by . This book was released on 1974 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
