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Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 364
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Book Description
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 364
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Book Description
Author:
Publisher:
ISBN:
Category : Aquatic sciences
Languages : en
Pages : 738
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Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 712
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Book Description
Author: Earl L. Bozeman
Publisher:
ISBN:
Category : Alewife
Languages : en
Pages : 28
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Book Description
Author: Frederick T. Short
Publisher: Univ of California Press
ISBN: 9780520240476
Category : Nature
Languages : en
Pages : 336
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Book Description
Seagrasses are a vital and widespread but often overlooked coastal marine habitat. This volume provides a global survey of their distribution and conservation status.
Author: Michael L. Weber
Publisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 166
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Book Description
Author:
Publisher:
ISBN:
Category : Canals
Languages : en
Pages : 24
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Book Description
Author: Vadim J. Birstein
Publisher: Springer Science & Business Media
ISBN: 0792345177
Category : Nature
Languages : en
Pages : 444
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Book Description
This volume presents a synthesis of basic biological and conservation data for more than 30 species of sturgeons (Acipenseridae), paddlefishes (Polyodontidae) and their fossil allies in the order Acipenseriformes. Since the Jurassic, the four families of sturgeon-like fish have been restricted to the Holarctic, where until very recently they flourished in most major river systems. Today, however, virtually all species of sturgeons and paddlefishes face difficult conservation issues. Papers in the first section of this volume examine paleontology, systematics, evolution and basic biology of Acipenseriformes. The second section of this volume details current conservation status for most of the world's living species of Acipenseriformes. These papers mark the first attempt to make such a global review of recent data from across the northern hemisphere. The emerging picture is discouraging, for negative anthropogenic impacts range from overfishing to water pollution, to dams and water diversion projects, and all species are threatened to some degree. The third section of the volume considers specific human impacts and responses to conservation issues. These include: the Aral Sea ecological disaster and its impact on native sturgeons; a review of methods for restoring sturgeon populations; the use of molecular techniques in developing conservation strategies; the extreme sensitivity of sturgeons and paddlefishes to overfishing; and the history of a recently convicted caviar poaching ring. The volume's summary reviews the status of all extant species and notes future directions for research on behavior, ecology and population biology that could lead to better co-ordinated international conservation efforts.
Author:
Publisher: Office of Technology Assessment
ISBN:
Category : Nature
Languages : en
Pages : 180
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Book Description
Author: Derek H. Ogle
Publisher: CRC Press
ISBN: 1482235226
Category : Mathematics
Languages : en
Pages : 327
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Book Description
A How-To Guide for Conducting Common Fisheries-Related Analyses in R Introductory Fisheries Analyses with R provides detailed instructions on performing basic fisheries stock assessment analyses in the R environment. Accessible to practicing fisheries scientists as well as advanced undergraduate and graduate students, the book demonstrates the flexibility and power of R, offers insight into the reproducibility of script-based analyses, and shows how the use of R leads to more efficient and productive work in fisheries science. The first three chapters present a minimal introduction to the R environment that builds a foundation for the fisheries-specific analyses in the remainder of the book. These chapters help you become familiar with R for basic fisheries analyses and graphics. Subsequent chapters focus on methods to analyze age comparisons, age-length keys, size structure, weight-length relationships, condition, abundance (from capture-recapture and depletion data), mortality rates, individual growth, and the stock-recruit relationship. The fundamental statistical methods of linear regression, analysis of variance (ANOVA), and nonlinear regression are demonstrated within the contexts of these common fisheries analyses. For each analysis, the author completely explains the R functions and provides sufficient background information so that you can confidently implement each method. Web Resource The author’s website at http://derekogle.com/IFAR/ includes the data files and R code for each chapter, enabling you to reproduce the results in the book as well as create your own scripts. The site also offers supplemental code for more advanced analyses and practice exercises for every chapter.
