Skip Navigation


ICES Journal of Marine Science: Journal du Conseil Advance Access originally published online on October 25, 2006
ICES Journal of Marine Science: Journal du Conseil 2007 64(1):110-121; doi:10.1093/icesjms/fsl006
This Article
Right arrow Full Text Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow All Versions of this Article:
64/1/110    most recent
fsl006v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Piet, G. J.
Right arrow Articles by Greenstreet, S. P. R.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Piet, G. J.
Right arrow Articles by Greenstreet, S. P. R.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© 2006 International Council for the Exploration of the Sea. Published by Oxford Journals. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Potential pressure indicators for fishing, and their data requirements

G. J. Piet1, F. J. Quirijns1, L. Robinson2 and S. P. R. Greenstreet2

1 Wageningen IMARES, PO Box 68, 1970 AB IJmuiden, The Netherlands
2 Fisheries Research Services, Marine Laboratory, PO Box 101, Victoria Road, Aberdeen, AB11 9DB, UK

Correspondence to G. J. Piet: tel: +31 255 564699; fax: +31 255 564644; e-mail: gerjan.piet{at}wur.nl

Piet, G. J., Quirijns, F. J., Robinson, L., and Greenstreet, S. P. R. 2007. Potential pressure indicators for fishing, and their data requirements. – ICES Journal of Marine Science, 64: 110–121.

Indicators of fishing pressure are necessary to support an ecosystem approach to fisheries management (EAFM). We present a framework that distinguishes four levels of pressure indicators that move from being a simple description of anthropogenic activity to more precisely describing the actual pressure on the ecosystem and its components, but which require increasingly more information to be quantified. We use the example of the Dutch beam trawl fleet in the North Sea to compare these pressure indicators, as the level of information used is increased. The first level is that of fleet capacity (e.g. number of vessels), the second is fishing effort, usually expressed as the number of hours fishing or days at sea, the third incorporates fishing parameters such as the proportion of time actually spent fishing, fishing speed, or gear characteristics, e.g. the size of the beam trawl in order to determine the frequency with which an area is fished, and at the fourth level, the most informative measure of fishing pressure, annual fishing mortality, is available for a few commercial species from stock assessments. For other species, it can be calculated from the lower level pressure indicators through the incorporation of the chance of individuals of a species coming into contact with the fishing gear and the encounter mortality, which is the portion of mortality caused by the passing of the gear. Comparison of trends and absolute values shows that the pressure indicators at different levels differ considerably in their description of both present and historical fishing impact in the North Sea. Therefore, for an EAFM, we advise using the highest level pressure indicator that can be obtained with the data available.

Keywords: ecosystem approach to fisheries management, fishing impact, fishing mortality, marine ecosystem, métier, pressure indicator


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 ICES J. Mar. Sci.Home page
G. J. Piet, R. van Hal, and S. P. R. Greenstreet
Modelling the direct impact of bottom trawling on the North Sea fish community to derive estimates of fishing mortality for non-target fish species
ICES J. Mar. Sci., October 1, 2009; 66(9): 1985 - 1998.
[Abstract] [Full Text] [PDF]

Home page
 ICES J. Mar. Sci.Home page
S. P. R. Greenstreet, G. J. Holland, T. W. K. Fraser, and V. J. Allen
Modelling demersal fishing effort based on landings and days absence from port, to generate indicators of "activity"
ICES J. Mar. Sci., June 1, 2009; 66(5): 886 - 901.
[Abstract] [Full Text] [PDF]

Home page
 ICES J. Mar. Sci.Home page
S. P. R. Greenstreet, H. M. Fraser, and G. J. Piet
Using MPAs to address regional-scale ecological objectives in the North Sea: modelling the effects of fishing effort displacement
ICES J. Mar. Sci., January 1, 2009; 66(1): 90 - 100.
[Abstract] [Full Text] [PDF]

Home page
 ICES J. Mar. Sci.Home page
S. A. Pedersen, H. Fock, J. Krause, C. Pusch, A. L. Sell, U. Bottcher, S. I. Rogers, M. Skold, H. Skov, M. Podolska, et al.
Natura 2000 sites and fisheries in German offshore waters
ICES J. Mar. Sci., January 1, 2009; 66(1): 155 - 169.
[Abstract] [Full Text] [PDF]

Home page
 ICES J. Mar. Sci.Home page
V. M. Trenkel, M.-J. Rochet, and B. Mesnil
From model-based prescriptive advice to indicator-based interactive advice
ICES J. Mar. Sci., May 1, 2007; 64(4): 768 - 774.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.