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Author : Henry A. Hansen
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (418 download)
Download or read book An Analysis of Aerial Waterfowl Production Surveys in Alaska written by Henry A. Hansen and published by . This book was released on 1962* with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ludwig J. Rowinski
Publisher :
ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.:/5 (13 download)
Download or read book A Review of Waterfowl Investigations and a Comparison of Aerial and Ground Censusing of Waterfowl at Minto Flats, Alaska written by Ludwig J. Rowinski and published by . This book was released on 1958 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (644 download)
Download or read book Summary Report, July Waterfowl Production Surveys, Alaska written by and published by . This book was released on 1954 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Graham W. Smith
Publisher :
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.:/5 (952 download)
Download or read book A Critical Review of the Aerial and Ground Surveys of Breeding Waterfowl in North America written by Graham W. Smith and published by . This book was released on 1995 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Fish and Wildlife Service and the Canadian Wildlife Service in cooperation with others have conducted an annual survey of breeding waterfowl throughout central Canada, the north-central United States, and Alaska since 1955. The area comprises more than 50 strata of habitats. Ducks are counted from aerial transects, and the counts are adjusted upward to account for birds that are not observed by aerial crews. These adjustments, called visibility correction factors, are developed from counts on the ground during which all waterfowl are assumed to have been detected. Counts on the ground are made of a subsample of the aerial survey. Visibility correction factors are calculated for each species and for each aerial crew. The total number of ducks by species and by strata is then calculated as the product of the observed density, the visibility correction factor, and the area of the strata.
Author : James G. King
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (418 download)
Download or read book Alaska Waterfowl Production Survey, 1966, July 14-24, 1966 written by James G. King and published by . This book was released on 1966 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James G. King
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (418 download)
Download or read book Alaska Waterfowl Production Survey, 1968 written by James G. King and published by . This book was released on 1968* with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James G. King
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (418 download)
Download or read book Alaska Waterfowl Production Survey, 1969 written by James G. King and published by . This book was released on 1969 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles J. Henny
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.3/5 (91 download)
Download or read book Aerial Surveys of Waterfowl Production in North America, 1955-71 written by Charles J. Henny and published by . This book was released on 1972 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Josh Hemmer reminisces about his boyhood on the farm and his many interesting relatives.
Author : Graham W. Smith
Publisher :
ISBN 13 :
Total Pages : 258 pages
Book Rating : 4.3/5 ( download)
Download or read book A Critical Review of the Aerial and Ground Surveys of Breeding Waterfowl in North America written by Graham W. Smith and published by . This book was released on 1995 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lyman L. McDonald
Publisher :
ISBN 13 :
Total Pages : 96 pages
Book Rating : 4.:/5 (511 download)
Download or read book Recommendations for Refinement of Duck Brood Surveys for the Alaska Region of the U.S. Fish and Wildlife Service written by Lyman L. McDonald and published by . This book was released on 1989 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The primary objective for this project is to provide recommendations concerning the design, conduct and analysis of annual duck brood surveys which will allow better: 1) estimates of brood production, 2) comparisons of densities and abundance, and 3) combinations of data from the National Wildlife Refuges and other waterfowl production areas in Alaska."--Page 2.
Author : Robert J. Ritchie
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (251 download)
Download or read book Aerial Waterfowl Surveys in the Kuparuk River Unit Oil and Gas Lease Sale 54 written by Robert J. Ritchie and published by . This book was released on 1989 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Ray Guttery
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)
Download or read book Surveys of Waterfowl in Kachemak Bay, Alaska During Winter 1999-2019 written by Michael Ray Guttery and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to public concern over perceived declines in sea duck populations in Kachemak Bay, Alaska, the Alaska Department of Fish and Game Waterfowl Program began conducting waterfowl surveys of the bay during winter of 1999. Between 1999 and 2019, a total of 10 surveys were conducted. Each survey included the use of open skiffs to enumerate waterfowl using nearshore habitats and fixed-winged aircraft to survey transects in offshore areas. Initially we had hoped to produce abundance estimates by species, but it was determined that the complexities of surveying wintering waterfowl precluded us from achieving this level of inference. Consequently, we report the results of trend analyses for those species for which there was adequate data. Results suggest that overall sea duck and total duck (sea ducks plus dabbling ducks) numbers increased over the course of the survey. Of the 10 individual species for which there was adequate data for analysis, 7 were found to have positive population trajectories. Population declines were detected for goldeneye (species combined), long-tailed ducks, and mallards with varying degrees of certainty. Overall, our results suggest that duck and sea duck populations are generally doing well in Kachemak Bay. However, it is important to note that due to their migratory nature, sea ducks, like virtually all waterfowl species, are typically monitored and managed at very large spatial scales so it is unclear how or if these results are indicative of patterns occurring at management-relevant scales.
Author : James G. King
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (418 download)
Download or read book Alaska Waterfowl Production Survey, 1970 written by James G. King and published by . This book was released on 1970* with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Edward Burnham Chamberlain
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.3/5 (91 download)
Download or read book Problems in Aerial Surveys of Waterfowl in Eastern Canada written by Edward Burnham Chamberlain and published by . This book was released on 1965 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Banding is one of the most important elements in the study of migratory game bird populations. Over 3,100 woodcock were banded in North America during 1965, with major programs conducted in Louisiana, Maine, Michigan, and West Virginia.
Author : Robert J. Ritchie
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (392 download)
Download or read book Results of 1980 Aerial Surveys of Spring Waterfowl Concentration Areas Along the Alaskan Gas Pipeline Route, Tetlin Junction to Pump Station No. 3 written by Robert J. Ritchie and published by . This book was released on 1980 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Office of the Federal Inspector for the Alaska Natural Gas Transportation System
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (2 download)
Download or read book Status and Preliminary Findings of 1980 Aerial Surveys of Spring Waterfowl Concentration Areas Along the Alaskan Gas Pipeline Route, Tetlin Junction to Pump Station No. 3 written by United States. Office of the Federal Inspector for the Alaska Natural Gas Transportation System and published by . This book was released on 1980 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : U.S. Fish and Wildlife Service. Waterfowl Investigations
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (55 download)
Download or read book Alaska Duck Production Surveys 1985 written by U.S. Fish and Wildlife Service. Waterfowl Investigations and published by . This book was released on 1986 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
