Appreciating the value of age: An evaluation of efficiency gains from controlling gear selectivity under various scenarios
The central objective of fishery management is to ensure the sustainability and profitability of the resource base. The importance of the fish stock's age-structure is increasingly recognized in economics and ecology. Still, current policies predominately rely on the aggregate biomass. We caref...
Main Author: | |
---|---|
Format: | Other/Unknown Material |
Language: | English unknown |
Published: |
International Institute of Fisheries Economics and Trade
|
Subjects: | |
Online Access: | https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/44558k10r |
id |
ftoregonstate:ir.library.oregonstate.edu:44558k10r |
---|---|
record_format |
openpolar |
spelling |
ftoregonstate:ir.library.oregonstate.edu:44558k10r 2024-04-14T08:05:49+00:00 Appreciating the value of age: An evaluation of efficiency gains from controlling gear selectivity under various scenarios Diekert, Florian https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/44558k10r English [eng] eng unknown International Institute of Fisheries Economics and Trade https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/44558k10r Copyright Not Evaluated Fisheries -- Economic aspects -- Congresses Sustainable fisheries -- Congresses Mod Fisheries Economics Bioeconomic Modeling Part V Other ftoregonstate 2024-03-21T15:53:36Z The central objective of fishery management is to ensure the sustainability and profitability of the resource base. The importance of the fish stock's age-structure is increasingly recognized in economics and ecology. Still, current policies predominately rely on the aggregate biomass. We carefully calibrate a detailed model on the North-East Arctic cod fishery to estimate the efficiency gains from controlling gear selectivity. Moreover, we explore the sensitivity of optimal harvesting policies with respect to different assumptions on the biological model, in particular different recruitment functions and density-dependent growth. Age-selective harvesting is central to increasing profits in all scenarios. However, the maximum achievable Net-Present-Value differs strongly for the different biological assumptions, which -- by and large -- all are equally defendable. This points to the need to more routinely assess the structural uncertainty surrounding bio-economic simulations. Our study provides an increased understanding of the determinants of age-structured harvesting, emphasizing that it is high time to move beyond traditional reference points and consider age-differentiated management tools. Other/Unknown Material Arctic cod Arctic ScholarsArchive@OSU (Oregon State University) Arctic |
institution |
Open Polar |
collection |
ScholarsArchive@OSU (Oregon State University) |
op_collection_id |
ftoregonstate |
language |
English unknown |
topic |
Fisheries -- Economic aspects -- Congresses Sustainable fisheries -- Congresses Mod Fisheries Economics Bioeconomic Modeling Part V |
spellingShingle |
Fisheries -- Economic aspects -- Congresses Sustainable fisheries -- Congresses Mod Fisheries Economics Bioeconomic Modeling Part V Diekert, Florian Appreciating the value of age: An evaluation of efficiency gains from controlling gear selectivity under various scenarios |
topic_facet |
Fisheries -- Economic aspects -- Congresses Sustainable fisheries -- Congresses Mod Fisheries Economics Bioeconomic Modeling Part V |
description |
The central objective of fishery management is to ensure the sustainability and profitability of the resource base. The importance of the fish stock's age-structure is increasingly recognized in economics and ecology. Still, current policies predominately rely on the aggregate biomass. We carefully calibrate a detailed model on the North-East Arctic cod fishery to estimate the efficiency gains from controlling gear selectivity. Moreover, we explore the sensitivity of optimal harvesting policies with respect to different assumptions on the biological model, in particular different recruitment functions and density-dependent growth. Age-selective harvesting is central to increasing profits in all scenarios. However, the maximum achievable Net-Present-Value differs strongly for the different biological assumptions, which -- by and large -- all are equally defendable. This points to the need to more routinely assess the structural uncertainty surrounding bio-economic simulations. Our study provides an increased understanding of the determinants of age-structured harvesting, emphasizing that it is high time to move beyond traditional reference points and consider age-differentiated management tools. |
format |
Other/Unknown Material |
author |
Diekert, Florian |
author_facet |
Diekert, Florian |
author_sort |
Diekert, Florian |
title |
Appreciating the value of age: An evaluation of efficiency gains from controlling gear selectivity under various scenarios |
title_short |
Appreciating the value of age: An evaluation of efficiency gains from controlling gear selectivity under various scenarios |
title_full |
Appreciating the value of age: An evaluation of efficiency gains from controlling gear selectivity under various scenarios |
title_fullStr |
Appreciating the value of age: An evaluation of efficiency gains from controlling gear selectivity under various scenarios |
title_full_unstemmed |
Appreciating the value of age: An evaluation of efficiency gains from controlling gear selectivity under various scenarios |
title_sort |
appreciating the value of age: an evaluation of efficiency gains from controlling gear selectivity under various scenarios |
publisher |
International Institute of Fisheries Economics and Trade |
url |
https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/44558k10r |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic cod Arctic |
genre_facet |
Arctic cod Arctic |
op_relation |
https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/44558k10r |
op_rights |
Copyright Not Evaluated |
_version_ |
1796302430000906240 |