Jointness through fishing days input in a multi-species Fishery
Some multi-species fisheries are characterised by production jointness in the sense that several species are caught through a joint production process (literally in the same haul of the net). Other multi-species fisheries (so called purse seine fisheries) are specialized in the sense that species are targeted individually and by-catch is negligible, but over the fishing season the same boat chooses to target several species with varying intensity which also results in a sort of jointness. Both types of fisheries are typically modelled using standard multi-input multi-output profit function forms (e.g. translog, normalized quadratic). In this paper we argue that jointness in the latter, essentially separable fishery is caused by allocation of fishing days input among harvested species. We developed a structural model of a multi-species fishery where the allocation of fishing days input causes production jointness. We estimate the model for the Norwegian purse seine fishery and find that it is characterised by non-jointness, while estimations for this fishery using the standard multi-input multi-output profit function imply jointness.
|Date of creation:||May 2010|
|Date of revision:|
|Contact details of provider:|| Web page: http://www.ifro.ku.dk/english/|
More information through EDIRC
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Quinn Weninger, 1998.
"Assessing Efficiency Gains from Individual Transferable Quotas: An Application to the Mid-Atlantic Surf Clam and Ocean Quahog Fishery,"
American Journal of Agricultural Economics,
Agricultural and Applied Economics Association, vol. 80(4), pages 750-764.
- Weninger, Quinn, 1998. "Assessing Efficiency Gains From Individual Transferable Quotas: An Application to the Mid-Atlantic Surf Clam and Ocean Quahog Fishery," Staff General Research Papers 5065, Iowa State University, Department of Economics.
When requesting a correction, please mention this item's handle: RePEc:foi:wpaper:2010_08. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Geir Tveit)
If references are entirely missing, you can add them using this form.