Complex assessments or simple management procedures for efficient fisheries management: a comparative study
Complex stock assessment methods are data- and expertise-hungry, with the annual updates of catch-at-age data and models typically seen as an essential requirement for sound management. But are the heavy commitments of resources required for this level of annual intervention really necessary to achi...
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Oxford University Press
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Online Access: | http://hdl.handle.net/11427/17773 http://icesjms.oxfordjournals.org/content/early/2014/02/25/icesjms.fsu017 https://open.uct.ac.za/bitstream/11427/17773/1/Geromont_Complex_assessments_or_2015.pdf |
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ftunivcapetownir:oai:localhost:11427/17773 2023-05-15T17:33:05+02:00 Complex assessments or simple management procedures for efficient fisheries management: a comparative study Geromont, Helena F Butterworth, Doug S 2015 application/pdf http://hdl.handle.net/11427/17773 http://icesjms.oxfordjournals.org/content/early/2014/02/25/icesjms.fsu017 https://open.uct.ac.za/bitstream/11427/17773/1/Geromont_Complex_assessments_or_2015.pdf eng eng Oxford University Press University of Cape Town Faculty of Science Marine Resource Assessment and Management Group http://hdl.handle.net/11427/17773 http://icesjms.oxfordjournals.org/content/early/2014/02/25/icesjms.fsu017 https://open.uct.ac.za/bitstream/11427/17773/1/Geromont_Complex_assessments_or_2015.pdf ICES Journal of Marine Science http://icesjms.oxfordjournals.org/ complex assessments empirical management procedures hindsight/forecast projections management performance retrospective comparison Journal Article 2015 ftunivcapetownir 2022-09-13T05:58:42Z Complex stock assessment methods are data- and expertise-hungry, with the annual updates of catch-at-age data and models typically seen as an essential requirement for sound management. But are the heavy commitments of resources required for this level of annual intervention really necessary to achieve efficient long-term fishery management? This question is addressed through a retrospective analysis of management performance over the last 20 years for four North Atlantic fish stocks. The assessments for two of these stocks have exhibited fairly strong retrospective patterns. The actual assessment advice for these stocks was provided based on complex assessment methods making use of age data. The outcomes are compared with what could have been achieved with much simpler catch control rules based upon age-aggregated survey indices alone. Even for the stocks whose assessments exhibit retrospective patterns, these simple rules can achieve virtually equivalent catch and risk performance, with much less interannual TAC variability, compared with what actually occurred over the past 20 years. Article in Journal/Newspaper North Atlantic University of Cape Town: OpenUCT Tac ENVELOPE(-59.517,-59.517,-62.500,-62.500) |
institution |
Open Polar |
collection |
University of Cape Town: OpenUCT |
op_collection_id |
ftunivcapetownir |
language |
English |
topic |
complex assessments empirical management procedures hindsight/forecast projections management performance retrospective comparison |
spellingShingle |
complex assessments empirical management procedures hindsight/forecast projections management performance retrospective comparison Geromont, Helena F Butterworth, Doug S Complex assessments or simple management procedures for efficient fisheries management: a comparative study |
topic_facet |
complex assessments empirical management procedures hindsight/forecast projections management performance retrospective comparison |
description |
Complex stock assessment methods are data- and expertise-hungry, with the annual updates of catch-at-age data and models typically seen as an essential requirement for sound management. But are the heavy commitments of resources required for this level of annual intervention really necessary to achieve efficient long-term fishery management? This question is addressed through a retrospective analysis of management performance over the last 20 years for four North Atlantic fish stocks. The assessments for two of these stocks have exhibited fairly strong retrospective patterns. The actual assessment advice for these stocks was provided based on complex assessment methods making use of age data. The outcomes are compared with what could have been achieved with much simpler catch control rules based upon age-aggregated survey indices alone. Even for the stocks whose assessments exhibit retrospective patterns, these simple rules can achieve virtually equivalent catch and risk performance, with much less interannual TAC variability, compared with what actually occurred over the past 20 years. |
format |
Article in Journal/Newspaper |
author |
Geromont, Helena F Butterworth, Doug S |
author_facet |
Geromont, Helena F Butterworth, Doug S |
author_sort |
Geromont, Helena F |
title |
Complex assessments or simple management procedures for efficient fisheries management: a comparative study |
title_short |
Complex assessments or simple management procedures for efficient fisheries management: a comparative study |
title_full |
Complex assessments or simple management procedures for efficient fisheries management: a comparative study |
title_fullStr |
Complex assessments or simple management procedures for efficient fisheries management: a comparative study |
title_full_unstemmed |
Complex assessments or simple management procedures for efficient fisheries management: a comparative study |
title_sort |
complex assessments or simple management procedures for efficient fisheries management: a comparative study |
publisher |
Oxford University Press |
publishDate |
2015 |
url |
http://hdl.handle.net/11427/17773 http://icesjms.oxfordjournals.org/content/early/2014/02/25/icesjms.fsu017 https://open.uct.ac.za/bitstream/11427/17773/1/Geromont_Complex_assessments_or_2015.pdf |
long_lat |
ENVELOPE(-59.517,-59.517,-62.500,-62.500) |
geographic |
Tac |
geographic_facet |
Tac |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ICES Journal of Marine Science http://icesjms.oxfordjournals.org/ |
op_relation |
http://hdl.handle.net/11427/17773 http://icesjms.oxfordjournals.org/content/early/2014/02/25/icesjms.fsu017 https://open.uct.ac.za/bitstream/11427/17773/1/Geromont_Complex_assessments_or_2015.pdf |
_version_ |
1766131460956225536 |