From strategic ambiguity to technical reference points in the Antarctic krill fishery: the worst journey in the world?
SUMMARY The goals of ecosystem based management (EBM) are strategically ambiguous, meaning that they require interpretation to identify objectives for ecosystem state. Ecosystem states that are useful for achieving such objectives are known as reference points. Soft reference points specify both a s...
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2013
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Online Access: | http://dx.doi.org/10.1017/s0376892913000088 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0376892913000088 |
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crcambridgeupr:10.1017/s0376892913000088 2024-03-03T08:38:01+00:00 From strategic ambiguity to technical reference points in the Antarctic krill fishery: the worst journey in the world? HILL, SIMEON L. 2013 http://dx.doi.org/10.1017/s0376892913000088 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0376892913000088 en eng Cambridge University Press (CUP) http://creativecommons.org/licensesw/by-nc-sa/2.5/ Environmental Conservation volume 40, issue 4, page 394-405 ISSN 0376-8929 1469-4387 Health, Toxicology and Mutagenesis Management, Monitoring, Policy and Law Nature and Landscape Conservation Pollution Water Science and Technology journal-article 2013 crcambridgeupr https://doi.org/10.1017/s0376892913000088 2024-02-08T08:38:39Z SUMMARY The goals of ecosystem based management (EBM) are strategically ambiguous, meaning that they require interpretation to identify objectives for ecosystem state. Ecosystem states that are useful for achieving such objectives are known as reference points. Soft reference points specify both a state and a probability of the ecosystem being in that state. They are used with simulation models to identify management measures for which the risk of the ecosystem entering an undesirable state is below a specified level. The Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) is responsible for the EBM of Antarctic krill fisheries. CCAMLR used soft reference points for the krill stock in the Scotia Sea and southern Drake Passage to set a regional catch limit. However, this catch limit needs spatial subdivision to protect predators from localized depletion. Model-based evaluations of different options for subdividing the catch limit used illustrative reference points to assess the depletion risk to multiple predators. This study demonstrates that the apparent risk is sensitive to the choice of reference point and method for aggregating modelled predators. EBM practitioners and stakeholders need to be aware that these factors could therefore bias comparisons of management measures. Nonetheless, qualitative distinctions between different spatial subdivision options are relatively consistent except at high levels of aggregation and extreme reference points. This study also demonstrates a lack of generality in the relationship between current and future ecosystem state. Thus, the EBM goal of maintaining ecosystem resilience implies different reference points for the current state of different ecosystem components. Despite early progress in defining soft reference points for the krill stock, CCAMLR has not yet defined reference points for krill predators. Structured dialogue aimed at identifying collective objectives might be necessary to achieve further progress in CCAMLR and other EBM ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Drake Passage Scotia Sea Cambridge University Press Antarctic The Antarctic Drake Passage Scotia Sea Environmental Conservation 40 4 394 405 |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Health, Toxicology and Mutagenesis Management, Monitoring, Policy and Law Nature and Landscape Conservation Pollution Water Science and Technology |
spellingShingle |
Health, Toxicology and Mutagenesis Management, Monitoring, Policy and Law Nature and Landscape Conservation Pollution Water Science and Technology HILL, SIMEON L. From strategic ambiguity to technical reference points in the Antarctic krill fishery: the worst journey in the world? |
topic_facet |
Health, Toxicology and Mutagenesis Management, Monitoring, Policy and Law Nature and Landscape Conservation Pollution Water Science and Technology |
description |
SUMMARY The goals of ecosystem based management (EBM) are strategically ambiguous, meaning that they require interpretation to identify objectives for ecosystem state. Ecosystem states that are useful for achieving such objectives are known as reference points. Soft reference points specify both a state and a probability of the ecosystem being in that state. They are used with simulation models to identify management measures for which the risk of the ecosystem entering an undesirable state is below a specified level. The Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) is responsible for the EBM of Antarctic krill fisheries. CCAMLR used soft reference points for the krill stock in the Scotia Sea and southern Drake Passage to set a regional catch limit. However, this catch limit needs spatial subdivision to protect predators from localized depletion. Model-based evaluations of different options for subdividing the catch limit used illustrative reference points to assess the depletion risk to multiple predators. This study demonstrates that the apparent risk is sensitive to the choice of reference point and method for aggregating modelled predators. EBM practitioners and stakeholders need to be aware that these factors could therefore bias comparisons of management measures. Nonetheless, qualitative distinctions between different spatial subdivision options are relatively consistent except at high levels of aggregation and extreme reference points. This study also demonstrates a lack of generality in the relationship between current and future ecosystem state. Thus, the EBM goal of maintaining ecosystem resilience implies different reference points for the current state of different ecosystem components. Despite early progress in defining soft reference points for the krill stock, CCAMLR has not yet defined reference points for krill predators. Structured dialogue aimed at identifying collective objectives might be necessary to achieve further progress in CCAMLR and other EBM ... |
format |
Article in Journal/Newspaper |
author |
HILL, SIMEON L. |
author_facet |
HILL, SIMEON L. |
author_sort |
HILL, SIMEON L. |
title |
From strategic ambiguity to technical reference points in the Antarctic krill fishery: the worst journey in the world? |
title_short |
From strategic ambiguity to technical reference points in the Antarctic krill fishery: the worst journey in the world? |
title_full |
From strategic ambiguity to technical reference points in the Antarctic krill fishery: the worst journey in the world? |
title_fullStr |
From strategic ambiguity to technical reference points in the Antarctic krill fishery: the worst journey in the world? |
title_full_unstemmed |
From strategic ambiguity to technical reference points in the Antarctic krill fishery: the worst journey in the world? |
title_sort |
from strategic ambiguity to technical reference points in the antarctic krill fishery: the worst journey in the world? |
publisher |
Cambridge University Press (CUP) |
publishDate |
2013 |
url |
http://dx.doi.org/10.1017/s0376892913000088 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0376892913000088 |
geographic |
Antarctic The Antarctic Drake Passage Scotia Sea |
geographic_facet |
Antarctic The Antarctic Drake Passage Scotia Sea |
genre |
Antarc* Antarctic Antarctic Krill Drake Passage Scotia Sea |
genre_facet |
Antarc* Antarctic Antarctic Krill Drake Passage Scotia Sea |
op_source |
Environmental Conservation volume 40, issue 4, page 394-405 ISSN 0376-8929 1469-4387 |
op_rights |
http://creativecommons.org/licensesw/by-nc-sa/2.5/ |
op_doi |
https://doi.org/10.1017/s0376892913000088 |
container_title |
Environmental Conservation |
container_volume |
40 |
container_issue |
4 |
container_start_page |
394 |
op_container_end_page |
405 |
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1792503766639968256 |