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Evaluating Effects Of Ecological Change On Important Sport Fishes In Oneida Lake New York
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Book Synopsis Evaluating Effects of Ecological Change on Important Sport Fishes in Oneida Lake, New York by : Brian James Irwin
Download or read book Evaluating Effects of Ecological Change on Important Sport Fishes in Oneida Lake, New York written by Brian James Irwin and published by . This book was released on 2006 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquatic ecosystems provide numerous resources to diverse user groups. As a result, these systems are often targets of planned management actions but are also sensitive to uncontrolled biological invasions. Oneida Lake has a rich history of ecological study across multiple trophic levels and has experienced notable perturbations to its food web during the past half-century. To evaluate large-scale ecological changes, I used multiple approaches to examine dynamics in several longterm data series. In Chapter 1, I quantified age-0 yellow perch density at four early life stages and calculated mortality and growth rates. At all stages, densities have declined over time. Mortality rates from egg to 18mm showed no time trend, increased for 18mm - 1 Aug., and decreased from 1 Aug. - 15 Oct. Depensatory mortality, prevalent in the 1960s to early 1970s, was not seen in recent years. Growth has increased, was density dependent, and was significantly correlated with increased Secchi depth. The combined effect has been a decline in abundance and an increase in individual size by the end of the first year. In Chapter 2, I combined three long-term data sets for walleye to simultaneously estimate mortality, catchability in gillnets and trawls, and density using a non-linear minimization routine. A multi-mortality model with two time periods suggested decreased fishing mortality but increased sub-adult mortality during recent years when more restrictive size limits were in place and double-crested cormorants were abundant. In Chapter 3, I used gillnet and bottom trawl catches to identify changes in fish abundance after zebra mussel colonization. Based on a priori expectations, I evaluated changes between pre- and post-zebra mussel periods and compared observed values with projections from 30-year population trajectories. Between periods, gillnet catches of Pelagic fishes declined while catches of Littoral and Benthic fishes increased. Population trajectories indicated declining percids; however, gillnet catches of smallmouth bass and pumpkinseed sunfish remained high throughout much of the zebra mussel period. Changing ecological conditions (increased water clarity, temperature, and macrophytes; altered nutrient pathways; and variable top predators) appear to favor a fish community shift away from percids and towards centrarchids. (Abstract).
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Double-crested Cormorant Management by :
Download or read book Double-crested Cormorant Management written by and published by . This book was released on 2003 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of The Academy of Natural Sciences (Vol. 146, 1995) by :
Download or read book Proceedings of The Academy of Natural Sciences (Vol. 146, 1995) written by and published by Academy of Natural Sciences. This book was released on with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hearings by : United States. Congress. House
Download or read book Hearings written by United States. Congress. House and published by . This book was released on 1966 with total page 2294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Predator-prey Systems in Fisheries Management by : Henry Clepper
Download or read book Predator-prey Systems in Fisheries Management written by Henry Clepper and published by . This book was released on 1979 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sport Fishery Abstracts written by and published by . This book was released on 1976 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Double-Crested Cormorant by : Linda R. Wires
Download or read book The Double-Crested Cormorant written by Linda R. Wires and published by Yale University Press. This book was released on 2014-04-29 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores the roots of the human-cormorant conflict and assesses the federal policies that have been developed to manage the bird's population in the twenty-first century.
Book Synopsis Limnological and Engineering Analysis of a Polluted Urban Lake by : Steven W. Effler
Download or read book Limnological and Engineering Analysis of a Polluted Urban Lake written by Steven W. Effler and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt: Onondaga Lake in Syracuse, New York is a model for the analysis and management of a polluted urban lake. Sometimes referred to as "the most polluted lake in the United States", Onondaga Lake is one of only two lakes for which a federal advisory body has been set up to guide environmental remediation. The recipient of significant municipal effluent and industrial waste for more than a century, Onondaga Lake has been the focus of intensive limnological investigation and extensive remediation efforts. This book is a comprehensive presentation of the scientific knowledge about Onondaga Lake, based on research coordinated by the Upstate Freshwater Institute. Onondaga Lake: Limnology and Environmental Management of a Polluted Urban Lake is the most complete case study of a lake, and will be of interest to water quality scientists, engineers and managers, as well as environmental engineers, modelers, and policymakers.
Book Synopsis Proceedings - Vertebrate Pest Conference by :
Download or read book Proceedings - Vertebrate Pest Conference written by and published by . This book was released on 2008 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Contemporary Studies on Fish Feeding by : Charles A. Simenstad
Download or read book Contemporary Studies on Fish Feeding written by Charles A. Simenstad and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: GUTSHOP '84 was the fourth in a series of workshops on various aspects of fish feeding (Table 1). Initially, the organizers merely invited regional (Pacific Northwest) fisheries scientists to share, and possibly develop mutual solutions to, the many technical problems associated with trying to obtain meaningful, quantitative information from fish stomach contents, and the subsequent statistical treatment and interpretation of the multivariate data. Since then, although not explicitly based upon any internal cycle, these scientists and increasingly more and more dispersed colleagues continued to congregate for workshop deliberations every two or three years. From the 49 attendees at the first workshop, the number of participants had grown to 65 at GUTSHOP '78, and 107 at GUTSHOP '81. By the third workshop, we were drawing scientists from across the U. S. and Canada, and from as far away as Norway. The topical content of the workshops has also evolved from the predominantly technical aspects of fish collection and stomach contents processing techniques, statistical analysis, and data manipulation and presentation to considerations of theoretical ecology, bioenergetics, and behavior.
Author :United States. Congress. House. Committee on Government Operations. Natural Resources and Power Subcommittee Publisher : ISBN 13 : Total Pages :1120 pages Book Rating :4.:/5 (6 download)
Book Synopsis Water Pollution--Great Lakes by : United States. Congress. House. Committee on Government Operations. Natural Resources and Power Subcommittee
Download or read book Water Pollution--Great Lakes written by United States. Congress. House. Committee on Government Operations. Natural Resources and Power Subcommittee and published by . This book was released on 1966 with total page 1120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Canadian Journal of Fisheries and Aquatic Sciences by :
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2003-12 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water Pollution--Great Lakes by : United States. Congress. House Government Operations
Download or read book Water Pollution--Great Lakes written by United States. Congress. House Government Operations and published by . This book was released on 1966 with total page 1122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water Resources Research Catalog by : United States. Office of Water Research and Technology
Download or read book Water Resources Research Catalog written by United States. Office of Water Research and Technology and published by . This book was released on 1968 with total page 1542 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning with vol. 9, only new and continuing but modified projects are listed. Vols. 8- should be kept as a record of continuing but unchanged projects.
Book Synopsis Fishes of West Virginia by : Jay Stauffer
Download or read book Fishes of West Virginia written by Jay Stauffer and published by Academy of Natural Sciences. This book was released on 2007-12 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive work on the fishes of WV is the culmination of more than 20 years of res. Contains descriptions of the major river drainages in WV, a brief discussion of the zoogeog. of the fishes within the state, a table of fish dist. by drainage, a guide to the anatomical features used in fish ident., dichotomous keys to the families & species of WV fishes, physical descriptions of all fish species known or expected to occur in the state, & a glossary to supplement the species descriptions. Info. was gathered by: All major fish museums in the eastern U.S. were contacted & records of specimens collected were requested; museums with significant holdings of WV fishes were visited; & New fish surveys were conducted at approx. 1,000 sites throughout the state. Illus.
Book Synopsis North American Journal of Fisheries Management by :
Download or read book North American Journal of Fisheries Management written by and published by . This book was released on 2000 with total page 1106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
