Jointness through vessel capacity input in a multispecies fishery
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Jointness through vessel capacity input in a multispecies fishery. / Hansen, Lars Gårn; Jensen, Carsten Lynge.
In: Agricultural Economics, Vol. 45, No. 6, 01.11.2014, p. 745-756.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Jointness through vessel capacity input in a multispecies fishery
AU - Hansen, Lars Gårn
AU - Jensen, Carsten Lynge
PY - 2014/11/1
Y1 - 2014/11/1
N2 - The success of regulations of multispecies fisheries may depend critically on understanding output dependencies correctly. An example is purse seine fisheries that target several species over the season but are specialized in the sense that each species are targeted individually. Such fisheries are typically modeled as either independent single species fisheries or using standard multispecies functional forms characterized by jointness in inputs. We argue that production of each species is essentially independent but that jointness may be caused by competition for fixed but allocable input of vessel capacity. We develop a fixed but allocatable input model of purse seine fisheries capturing this particular type of jointness. We estimate the model for the Norwegian purse seine fishery and find that it is characterized by nonjointness, while estimations for this fishery using the standard models imply jointness.
AB - The success of regulations of multispecies fisheries may depend critically on understanding output dependencies correctly. An example is purse seine fisheries that target several species over the season but are specialized in the sense that each species are targeted individually. Such fisheries are typically modeled as either independent single species fisheries or using standard multispecies functional forms characterized by jointness in inputs. We argue that production of each species is essentially independent but that jointness may be caused by competition for fixed but allocable input of vessel capacity. We develop a fixed but allocatable input model of purse seine fisheries capturing this particular type of jointness. We estimate the model for the Norwegian purse seine fishery and find that it is characterized by nonjointness, while estimations for this fishery using the standard models imply jointness.
U2 - 10.1111/agec.12119
DO - 10.1111/agec.12119
M3 - Journal article
VL - 45
SP - 745
EP - 756
JO - Agricultural Economics
JF - Agricultural Economics
SN - 0169-5150
IS - 6
ER -
ID: 138904019