Abstract
| Original language | English |
|---|---|
| Journal | Natural Resource Modeling |
| Volume | 29 |
| Issue number | 3 |
| Pages (from-to) | 400-425 |
| ISSN | 0890-8575 |
| DOIs | |
| Publication status | Published - 2016 |
Keywords
- Modeling and Simulation
- Environmental Science (miscellaneous)
- Benefit indicator
- Ecosystem externalities
- Fisheries management
- Forage fish
- Marine ecosystems
- North Sea
- Size-based
Cite this
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An indicator for ecosystem externalities in fishing. / Ravn-Jonsen, Lars; Andersen, Ken Haste; Vestergaard, Niels.
In: Natural Resource Modeling, Vol. 29, No. 3, 2016, p. 400-425.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - An indicator for ecosystem externalities in fishing
AU - Ravn-Jonsen, Lars
AU - Andersen, Ken Haste
AU - Vestergaard, Niels
PY - 2016
Y1 - 2016
N2 - Ecosystem externalities arise when one use of an ecosystem affects its other uses through the production functions of the ecosystem. We use simulations with a size-spectrum ecosystem model to investigate the ecosystem externality created by fishing of multiple species. The model is based upon general ecological principles and is calibrated to the North Sea. Two fleets are considered: a "forage fish" fleet targeting species that mature at small sizes and a "large fish" fleet targeting large piscivorous species. Based on the marginal analysis of the present value of the rent, we develop a benefit indicator that explicitly divides the consequences of fishing into internal and external benefits. This analysis demonstrates that the forage fish fleet has a notable economic impact on the large fish fleet, but the reverse is not true. The impact can be either negative or positive, which entails that for optimal economic exploitation, the forage fishery has to be adjusted according to the large fish fishery. With the present large fish fishery in the North Sea, the two fisheries are well adjusted; however, the present combined exploitation level is too high to achieve optimal economic rents.
AB - Ecosystem externalities arise when one use of an ecosystem affects its other uses through the production functions of the ecosystem. We use simulations with a size-spectrum ecosystem model to investigate the ecosystem externality created by fishing of multiple species. The model is based upon general ecological principles and is calibrated to the North Sea. Two fleets are considered: a "forage fish" fleet targeting species that mature at small sizes and a "large fish" fleet targeting large piscivorous species. Based on the marginal analysis of the present value of the rent, we develop a benefit indicator that explicitly divides the consequences of fishing into internal and external benefits. This analysis demonstrates that the forage fish fleet has a notable economic impact on the large fish fleet, but the reverse is not true. The impact can be either negative or positive, which entails that for optimal economic exploitation, the forage fishery has to be adjusted according to the large fish fishery. With the present large fish fishery in the North Sea, the two fisheries are well adjusted; however, the present combined exploitation level is too high to achieve optimal economic rents.
KW - Modeling and Simulation
KW - Environmental Science (miscellaneous)
KW - Benefit indicator
KW - Ecosystem externalities
KW - Fisheries management
KW - Forage fish
KW - Marine ecosystems
KW - North Sea
KW - Size-based
U2 - 10.1111/nrm.12094
DO - 10.1111/nrm.12094
M3 - Journal article
VL - 29
SP - 400
EP - 425
JO - Natural Resource Modeling
JF - Natural Resource Modeling
SN - 0890-8575
IS - 3
ER -