Fisheries Ecology and Management

By: Carl J. Walters, Steven J. D. Martell

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Paperback | 17 January 2005

At a Glance

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448 Pages

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23.4 x 15.2 x 2.54

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Quantitative modeling methods have become a central tool in the management of harvested fish populations. This book examines how these modeling methods work, why they sometimes fail, and how they might be improved by incorporating larger ecological interactions. Fisheries Ecology and Management provides a broad introduction to the concepts and quantitative models needed to successfully manage fisheries.

Walters and Martell develop models that account for key ecological dynamics such as trophic interactions, food webs, multi-species dynamics, risk-avoidance behavior, habitat selection and density-dependence. They treat fisheries policy development as a two-stage process, first identifying strategies for varying harvest in relation to changes in abundance, then finding ways to implement such strategies in terms of monitoring and regulatory procedures. This book provides a general framework for developing assessment models in terms of state-observation dynamics hypotheses, and points out that most fisheries assessment failures have been due to inappropriate observation model hypotheses rather than faulty models for ecological dynamics.

Intended as a text in upper division and graduate classes on fisheries assessment and management, this useful guide will also be widely read by ecologists and fisheries scientists.

Industry Reviews

"An extremely valuable book... [W]e believe this to be a very important text for fisheries ecology and management."--Reviews in Fish Biolgy and Fisheries

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Non-Fiction Engineering & Technology Agriculture & Farming Aquaculture & Fish-Farming Practice & Techniques Science Biology, Life Sciences Life Sciences in General Ecological Science Hydrobiology Marine Biology Industry & Industrial Studies Primary Industries

List Of Figures	p. xi
List Of Tables	p. xvii
Preface	p. xix
Acknowledgments	p. xxi
Changing Objectives And Emerging Assessment Methods	p. 1
Introduction	p. 3
The Role of Predictive Models	p. 3
The Distinction between Fish Science and Fisheries Science	p. 5
Approaches to Prediction of Policy Impact	p. 6
Experimental Management	p. 9
The Ecological Basis of Sustainable Harvesting	p. 12
Trade-Offs in Fisheries Management	p. 20
Trade-Off Relationships and Policy Choices	p. 22
Short-Term versus Long-Term Values	p. 25
Biological Diversity versus Productivity	p. 31
Economic Efficiency versus Diversity of Employment Opportunities	p. 37
Allocation of Management-Agency Resources	p. 39
Elementary Concepts In Population Dynamics And Harvest Regulation	p. 41
Strategic Requirements for Sustainable Fisheries	p. 43
Harvest Optimization Models	p. 46
Constructing Feedback Policies	p. 49
Feedback Policy Implementation	p. 58
Feedback Policies for Incremental Quota Change	p. 61
Actively Adaptive Policies	p. 63
Tactics for Effective Harvest Regulation	p. 65
Tactical Options for Limiting Exploitation Rates	p. 67
Managing the Risk of Depensatory Effects under Output Control	p. 69
Tactics for Direct Control of Exploitation Rates	p. 74
Regulation of Exploitation Rates in Recreational Fisheries	p. 77
	p. 79
Monitoring Options and Priorities	p. 80
Maintaining Genetic Diversity and Structure in Harvested Populations	p. 83
Use And Abuse Of Single-Species Assessment Models	p. 87
An Overview of Single-Species Assessment Models	p. 89
Objectives of Single-Species Assessment	p. 89
State-Observation Components	p. 91
Estimation Criteria and Measuring Uncertainty	p. 95
Modeling Options	p. 101
Using Composition Information	p. 110
Dealing with Parameters That Aren't	p. 121
Foraging Arena Theory (I)	p. 124
Beverton-Holt Model for Stock-Recruitment	p. 128
Alternative Models Based on Juvenile Carrying Capacity	p. 132
Using Foraging Arena Arguments to Derive the Beverton-Holt Model	p. 136
Implications for Recruitment Research and Prediction	p. 147
Problems in the Assessment of Recruitment Relationships	p. 151
Which Parameters Matter?	p. 152
Predicting Reproductive Performance at Low Stock Sizes	p. 158
Predicting Capacity to Recover from Historical Overfishing	p. 160
The Errors-in-Variables Bias Problem	p. 162
The Time-Series Bias Problem	p. 165
Can Statistical Fisheries Oceanography Save the Day?	p. 173
Modeling Spatial Patterns And Dynamics In Fisheries	p. 179
Spatial Population Dynamics Models	p. 181
Life-History Trajectories	p. 182
Multistage Models	p. 185
Eulerian Representation	p. 188
Lagrangian Representation	p. 193
Policy Gaming with Spatial Models	p. 198
Temporal and Spatial Dynamics of Fishing Effort	p. 200
Long-Term Capacity	p. 201
Short-Term Effort Responses	p. 204
Spatial Allocation of Fishing Effort	p. 210
Mosaic Closures	p. 223
Food Web Modeling To Help Assess Impact Of Fisheries On Ecological Support Functions	p. 229
Foraging Arena Theory (II)	p. 231
Understanding Foraging Arena Theory	p. 232
Predicting Trophic Flows	p. 236
Adding Realism (I): Foraging Time Adjustments	p. 240
Adding Realism (II): Trophic Mediation	p. 244
Ecosim	p. 246
Representing Trophic Ontogeny in Ecosim	p. 248
Single-Species Dynamics from Ecosim Rate Equations	p. 252
Ecosystem-Scale Variation	p. 254
Options for Ecosystem Modeling	p. 256
Qualitative Analysis of Dominant Trophic Interactions	p. 259
Qualitative Analysis of More Complex Linkages	p. 270
Models That Link Dynamics with Nutrient Cycling Processes	p. 271
Table of Contents provided by Publisher. All Rights Reserved.

Fisheries Ecology and Management

At a Glance

Paperback

Industry Reviews

Shipping

How to return your order

Defective items

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