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Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 1000
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Book Description
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 1000
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Book Description
Author:
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 40
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Book Description
The Gulf sturgeon population in the Pearl River was monitored from 1992 through 1996 and compared to historical data sets from the 1960s and 1980s. The estimated population sire iii 1996 was approximately 300 fish with adults comprising about 3 percent of the population. Annual mortality rates in the late 1960s were about 9 percent; these rates increased to almost 40 percent in 1985 and decreased to about 26 percent during 1992 through 1996. Population modeling was used to evaluate the sturgeon's status and recovery potential. Results of models suggest that this population can only withstand mortality rates in the range of 13 to 18 percent, depending upon recruitment assumptions. Population models indicated that catch and fishing effort data specified in the Gulf Sturgeon Recovery Plan may not detect a declining population. Population models can be used to simulate annual variation in population sire under different rates of mortality. Recovery goals can address a specific source of mortality simulated in the model and monitoring can determine the success of recovery efforts. Population modeling does not require considerably more effort or expertise over that already required to conduct monitoring studies.
Author: Noah S. Adams
Publisher:
ISBN: 9781934874264
Category : Fishes
Languages : en
Pages : 543
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Book Description
Author: M.P. Wand
Publisher: CRC Press
ISBN: 1482216124
Category : Mathematics
Languages : en
Pages : 227
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Book Description
Kernel smoothing refers to a general methodology for recovery of underlying structure in data sets. The basic principle is that local averaging or smoothing is performed with respect to a kernel function. This book provides uninitiated readers with a feeling for the principles, applications, and analysis of kernel smoothers. This is facilita
Author: Peter Turchin
Publisher: Sinauer Associates Incorporated
ISBN: 9780878938476
Category : Science
Languages : en
Pages : 396
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Book Description
In the last two decades it has become increasingly clear that the spatial dimension is a critically important aspect of ecological dynamics. Ecologists are currently investing an enormous amount of effort in quantifying movement patterns of organisms. Connecting these data to general issues in metapopulation biology and landscape ecology, as well as to applied questions in conservation and natural resource management, however, has proved to be a non-trivial task. This book presents a systematic exposition of quantitative methods for analyzing and modeling movements of organisms in the field. Quantitative Analysis of Movement is intended for graduate students and researchers interested in spatial ecology, including applications to conservation, pest control, and fisheries. Models are a key ingredient in the analytical approaches developed in the book; however, the primary focus is not on mathematical methods, but on connections between models and data. The methodological approaches discussed in the book will be useful to ecologists working with all taxonomic groups. Case studies have been selected from a wide variety of organisms, including plants (seed dispersal, spatial spread of clonal plants), insects, and vertebrates (primarily, fish, birds, and mammals).
Author: Christopher C. Kohler
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 760
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Book Description
"The book covers fishery assessments, habitat and community manipulations, and common practices for managing stream, river, lake, and anadromous fisheries. Chapters on history; ecosystem management; management processes; communications with the public; introduced, undesirable, and endangered species; and the legal and regulatory frameworks provide the context for modern fisheries management." From fisheries.org.
Author: Eva B. Thorstad
Publisher: Springer Science & Business Media
ISBN: 9401707715
Category : Science
Languages : en
Pages : 314
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Book Description
This volume provides a selection of the most significant papers presented at the Fourth Conference on Fish Telemetry in Europe, in Trondheim, Norway, in 2001. Papers are focused on migratory patterns and habitat utilisation, social behaviour, physiological ecology, fisheries management, effects of human impact on fish populations, aquaculture and methodology, and new technology. This book is aimed at scientists and engineers actively involved in aquatic telemetry projects, aquatic biologists (marine and freshwater), fisheries biologists and managers.
Author: Simon Oakenfold
Publisher:
ISBN: 9781632397553
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
Marine fisheries management refers to the practice of using fisheries science in order to protect the marine ecosystem, especially fishes. It aims to device methods to sustainably harvest fishes along with minimizing exploitation of the natural resources involved in the process. This book is compiled in such a manner, that it will provide in-depth knowledge about the theory and practice of marine fisheries management. It presents this complex subject in the most comprehensive and easy to understand language. Students, researchers, marine biologists, aquaculturists, and all other associated with this area will find this text helpful. It will prove to be a beneficial source of reference for readers.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: John R. Sibert
Publisher: Springer Science & Business Media
ISBN: 9781402001253
Category : Business & Economics
Languages : en
Pages : 492
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Book Description
Reviews: Methods and Technology in Fish Biology and Fisheries published by Kluwer Academic Publishers is a book series dedicated to the publication of information on advanced, forward-looking methodologies, technologies, or perspectives in fish and is especially dedicated to relevant topics addressing global, fisheries. This series international concern in fish and fisheries. Humans continue to challenge our environments with new technologies and technological applications. The dynamic creativity of our own species often tends to place the greatest burden on our supporting ecosystems. This is especially true for aquatic networks of creeks, lakes, rivers and ocean environments. We also frequently use our conceptual powers to balance conflicting requirements and demands on nature and continue to develop new approaches and tools to provide sustainable resources as well as conserve what we hold most dear on local and global scales. This book series will provide a window into the developing dynamic among humans, aquatic ecosystems (both freshwater and marine), and the organisms that inhabit aquatic environments. There are many reasons to doubt the increasing social and economic value technology has gained over the last two centuries. Science and technology represent stages in human development. I agree with Ernst Mayer when he said in Toward a New Philosophy of Biology (1988) that "endeavors to solve all scientific problems by pure logic and refined measurements are unproductive, if not totally irrelevant.
