Methods for Evaluating the Impacts of Fisheries on North Atlantic Ecosystems
Pauly, D. and Pitcher T.J. (eds) Methods for assessing the impact of fisheries on marine ecosystems of the North Atlantic. Fisheries Centre Research Reports 8(2): 195pp
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Abstract
The contributions in this report stem from a workshop held in April 2000
to review the methodology deployed by the research team of the Sea Around
Us Project. This project, funded by The Pew Charitable Trusts, Philadelphia,
USA, is designed to provide an integrated analysis of the impacts of fisheries
on marine ecosystems, and to devise policies that can mitigate and reverse
harmful trends whilst ensuring the social and economic benefits of sustainable
fisheries. The data–rich North Atlantic was selected as the target
area for case studies to be conducted in the first two years of the project,
with other areas to follow in subsequent years. The methodology deployed
by the project includes: (1) the development of a spatially explicit catch
and effort information system that allows in-depth analysis of fisheries
catches for various large marine ecosystems, i.e., reported landings,
nominal catches, unreported catches, misreported catches, and discarded
by-catch, sorted by species and sector; (2) the quantification of the
biological and economic impacts of the present fishing trends or a change
thereof on the ecosystems, with reference to past ecosystems reconstructed
from time series of scientific data and the Ecopath with Ecosim software;
(3) the quantitative evaluation of the status of fisheries by sector,
gear type and location using a robust and simple system of rapid appraisal
(Rapfish) that may be applied to past, present and alternative future
fisheries; (4) approaches for scaling all results to a basin-wide scale;
and (5) quantification of the economic and other benefits to be gained
from re-establishing healthy ecosystems, relative to the losses expected
from a continuation of the status quo. An important feature of the methodology
assembled to meet these requirements is that it does not compete with
the elaborate single-species methodology conventionally applied to the
management of fisheries, and which generally pertain to geographic and
temporal scales much smaller than the basin-wide scale considered by the
Sea Around Us Project.
Daniel Pauly
Principal Investigator
Sea Around Us Project
Professor of Fisheries
UBC Fisheries Centre
| Table of Contents | ||
| Abstract | Full text (PDF) | |
| Director’s
Foreword Tony J. Pitcher |
Full text (PDF) | |
| Preface and Acknowledgements | Full text (PDF) | |
| Assessment
and Mitigation of Fisheries Impacts on Marine Ecosystems: A Multidisciplinary
Approach for Basin-scale Inferences, Applied to the North Atlantic D. Pauly and T.J. Pitcher |
Abstract (HTML) | Full text (PDF) |
| Mapping
Fisheries onto Marine Ecosystems: A Proposal for a Consensus Approach
for Regional, Oceanic and Global Integrations D. Pauly, V. Christensen, R. Froese, A. Longhurst, T. Platt, S. Sathyendranath, K. Sherman and R. Watson |
Abstract (HTML) | Full text (PDF) |
| The Basis
for Change: Part I Reconstructing Fisheries Catch and Catch and Effort
Data R. Watson, S. Guénette, P. Fanning and T.J. Pitcher |
Abstract (HTML) | Full text (PDF) |
| The Basis for Change 2:
Estimating Total Fishery Extractions from Marine Ecosystems of the
North Atlantic T.J. Pitcher and R. Watson |
Abstract (HTML) | Full text (PDF) |
| How Life History
Patterns and Depth Zone Analysis Can Help Fisheries Policy D. Zeller and D. Pauly |
Abstract (HTML) | Full text (PDF) |
| Small
Versus Large-scale Fisheries: A Multi-species, Multi-fleet Model for
Evaluating their Interactions and Potential Benefits L.M. Ruttan, F.C. Gayanilo, Jr. and U.R. Sumaila |
Abstract (HTML) | Full text (PDF) |
| Ecopath with
Ecosim: Methods, Capabilities and Limitations V. Christensen and C. Walters |
Abstract (HTML) | Full text (PDF) |
| Restoration of Overexploited
Capture Fishery Resources: An Economic/Ecosim Modeling Approach G. Munro and U.R. Sumaila |
Abstract (HTML) | Full text (PDF) |
| Tracking Fisheries Landings in the North Atlantic U.R. Sumaila, R. Chuenpagdee and G. Munro |
Abstract (HTML) | Full text (PDF) |
| Quantifying the Energy Consumed by North Atlantic
Fisheries P. Tyedmers |
Abstract (HTML) | Full text (PDF) |
| How Good is Good?: A Rapid Appraisal Technique for Evaluation
of the Sustainability Status of Fisheries of the North Atlantic J. Alder, T.J. Pitcher, D. Preikshot, K. Kaschner and B. Ferriss |
Abstract (HTML) | Full text (PDF) |
| Appendices | ||
| 1. List of Authors and Participants at Workshop | Full text (PDF) | |
| 2. List of Invited Project Evaluators | ||
| 3. Comments by External Evaluators | Full text (PDF) | |
| 4. Authors’ Index | Full text (PDF) | |
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