Impacts of spatial uncertainty on performance of age structure-based harvest strategies for blue eye trevalla ( Hyperoglyphe antarctica )
Harvest control rules (HCRs), key components of fisheries management strategies, are used to calculate recommended catch levels given estimates of present stock biomass or levels of fishing mortality. Spatial variability, either in the population dynamics, fishery operations, or in data collection,...
Published in: | Fisheries Research |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier Science Bv
2011
|
Subjects: | |
Online Access: | https://doi.org/10.1016/j.fishres.2011.04.015 http://ecite.utas.edu.au/119778 |
id |
ftunivtasecite:oai:ecite.utas.edu.au:119778 |
---|---|
record_format |
openpolar |
spelling |
ftunivtasecite:oai:ecite.utas.edu.au:119778 2023-05-15T13:49:03+02:00 Impacts of spatial uncertainty on performance of age structure-based harvest strategies for blue eye trevalla ( Hyperoglyphe antarctica ) Fay, G Punt, AE Smith, ADM 2011 https://doi.org/10.1016/j.fishres.2011.04.015 http://ecite.utas.edu.au/119778 en eng Elsevier Science Bv http://dx.doi.org/10.1016/j.fishres.2011.04.015 Fay, G and Punt, AE and Smith, ADM, Impacts of spatial uncertainty on performance of age structure-based harvest strategies for blue eye trevalla ( Hyperoglyphe antarctica ), Fisheries Research: An International Journal on Fishing Technology, Fisheries Science and Fisheries Management, 110, (3) pp. 391-407. ISSN 0165-7836 (2011) [Refereed Article] http://ecite.utas.edu.au/119778 Agricultural and Veterinary Sciences Fisheries Sciences Aquatic Ecosystem Studies and Stock Assessment Refereed Article PeerReviewed 2011 ftunivtasecite https://doi.org/10.1016/j.fishres.2011.04.015 2019-12-13T22:18:55Z Harvest control rules (HCRs), key components of fisheries management strategies, are used to calculate recommended catch levels given estimates of present stock biomass or levels of fishing mortality. Spatial variability, either in the population dynamics, fishery operations, or in data collection, has the potential to impact HCR performance as this can drive variability in indicators used for stock assessment. A management strategy evaluation (MSE) approach was used to evaluate the performance of HCRs for blue eye trevalla ( Hyperoglyphe antarctica ), a species that exhibits spatial variability in monitoring data in southeast Australia. Employing catch curve analysis, the HCRs rely solely on information from the age structure of the catch. Several versions of the HCRs were tested, varying the reference points used to determine management actions, and the way spatial variability was accounted for when setting catch limits. The results suggest that effective implementation of the HCRs is challenging, requiring appropriate choice of reference points and estimators. Spatial disaggregation of data leads to imprecise estimates of mortality rates. However, appropriate weighting of spatial estimates of stock status leads to higher relative stock size than when data are aggregated spatially. Variation in performance measures is dominated by uncertainty associated with mis-specification of the rate of natural mortality and the steepness of the stock-recruitment relationship. Such uncertainties can be expected for an information-poor, spatially heterogeneous resource, therefore additional considerations besides the HCR should be taken to achieve a desired precautionary result in contrast to the situation for more data-rich scenarios. Article in Journal/Newspaper Antarc* Antarctica eCite UTAS (University of Tasmania) Fisheries Research 110 3 391 407 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Agricultural and Veterinary Sciences Fisheries Sciences Aquatic Ecosystem Studies and Stock Assessment |
spellingShingle |
Agricultural and Veterinary Sciences Fisheries Sciences Aquatic Ecosystem Studies and Stock Assessment Fay, G Punt, AE Smith, ADM Impacts of spatial uncertainty on performance of age structure-based harvest strategies for blue eye trevalla ( Hyperoglyphe antarctica ) |
topic_facet |
Agricultural and Veterinary Sciences Fisheries Sciences Aquatic Ecosystem Studies and Stock Assessment |
description |
Harvest control rules (HCRs), key components of fisheries management strategies, are used to calculate recommended catch levels given estimates of present stock biomass or levels of fishing mortality. Spatial variability, either in the population dynamics, fishery operations, or in data collection, has the potential to impact HCR performance as this can drive variability in indicators used for stock assessment. A management strategy evaluation (MSE) approach was used to evaluate the performance of HCRs for blue eye trevalla ( Hyperoglyphe antarctica ), a species that exhibits spatial variability in monitoring data in southeast Australia. Employing catch curve analysis, the HCRs rely solely on information from the age structure of the catch. Several versions of the HCRs were tested, varying the reference points used to determine management actions, and the way spatial variability was accounted for when setting catch limits. The results suggest that effective implementation of the HCRs is challenging, requiring appropriate choice of reference points and estimators. Spatial disaggregation of data leads to imprecise estimates of mortality rates. However, appropriate weighting of spatial estimates of stock status leads to higher relative stock size than when data are aggregated spatially. Variation in performance measures is dominated by uncertainty associated with mis-specification of the rate of natural mortality and the steepness of the stock-recruitment relationship. Such uncertainties can be expected for an information-poor, spatially heterogeneous resource, therefore additional considerations besides the HCR should be taken to achieve a desired precautionary result in contrast to the situation for more data-rich scenarios. |
format |
Article in Journal/Newspaper |
author |
Fay, G Punt, AE Smith, ADM |
author_facet |
Fay, G Punt, AE Smith, ADM |
author_sort |
Fay, G |
title |
Impacts of spatial uncertainty on performance of age structure-based harvest strategies for blue eye trevalla ( Hyperoglyphe antarctica ) |
title_short |
Impacts of spatial uncertainty on performance of age structure-based harvest strategies for blue eye trevalla ( Hyperoglyphe antarctica ) |
title_full |
Impacts of spatial uncertainty on performance of age structure-based harvest strategies for blue eye trevalla ( Hyperoglyphe antarctica ) |
title_fullStr |
Impacts of spatial uncertainty on performance of age structure-based harvest strategies for blue eye trevalla ( Hyperoglyphe antarctica ) |
title_full_unstemmed |
Impacts of spatial uncertainty on performance of age structure-based harvest strategies for blue eye trevalla ( Hyperoglyphe antarctica ) |
title_sort |
impacts of spatial uncertainty on performance of age structure-based harvest strategies for blue eye trevalla ( hyperoglyphe antarctica ) |
publisher |
Elsevier Science Bv |
publishDate |
2011 |
url |
https://doi.org/10.1016/j.fishres.2011.04.015 http://ecite.utas.edu.au/119778 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
http://dx.doi.org/10.1016/j.fishres.2011.04.015 Fay, G and Punt, AE and Smith, ADM, Impacts of spatial uncertainty on performance of age structure-based harvest strategies for blue eye trevalla ( Hyperoglyphe antarctica ), Fisheries Research: An International Journal on Fishing Technology, Fisheries Science and Fisheries Management, 110, (3) pp. 391-407. ISSN 0165-7836 (2011) [Refereed Article] http://ecite.utas.edu.au/119778 |
op_doi |
https://doi.org/10.1016/j.fishres.2011.04.015 |
container_title |
Fisheries Research |
container_volume |
110 |
container_issue |
3 |
container_start_page |
391 |
op_container_end_page |
407 |
_version_ |
1766250722821668864 |