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Integration of Spatial Attributes in Fishery Biological Studies: The Paradigm and a Case Study of Large Pelagic Fishery In the NW Coast In: ICAR Sponsored Winter School on Recent Advances in Fishery Biology Techniques for Biodiversity Evaluation and Conservation, 1-21 December 2018, Kochi.

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Relation https://eprints.cmfri.org.in/13317/
 
Title Integration of Spatial Attributes in Fishery
Biological Studies: The Paradigm and a Case
Study of Large Pelagic Fishery In the NW Coast In: ICAR Sponsored Winter School on Recent Advances in Fishery Biology Techniques for Biodiversity Evaluation and Conservation, 1-21 December 2018, Kochi.
 
Creator Koya, Mohammed
 
Subject Fishery Biology
Pelagic Fisheries
 
Description Wide spatial distribution and temporal variations in abundance are unique features of fishery
resources (Vivekanandan, 2005). The spatial variability of the stock reflects the pattern in
fishing effort, thereby the fishing mortality owing to the target stock being aggregated or due to
management restrictions, distance to port, vessel size, and the experience and habits of individual
fishers (Yong, 2014). Ignoring this spatial variation can lead to serious biases in estimates of fishing
mortality and yield (Hart 2001). Indexes related to catch rates or abundances are used often in the
stock assessments or are the indexes for monitoring fish stocks despite the fact that the non-random
spatial distribution of fish and fishing effort makes the interpretation of commercial catch rate
(CPUE) difficult (NRC 1999). Such targeted deployment of fishing effort results in constant or
increasing CPUE even though the stock size is decreasing till a point where the stock is at very low
levels. A number of fish stock shave collapsed due to such misinterpretation of CPUE, the prominent
being the case of northern cod (Hilborn and Walters 1992).
 
Date 2018
 
Type Teaching Resource
PeerReviewed
 
Format text
 
Language en
 
Identifier https://eprints.cmfri.org.in/13317/1/15-Winter%20School%20on%20Recent%20Advances%20in%20Fishery%20Biology%20Techniques%20for%20Biodiversity%20Evaluation%20and%20Conservation_2018_Mohammed%20Koya.pdf
Koya, Mohammed (2018) Integration of Spatial Attributes in Fishery Biological Studies: The Paradigm and a Case Study of Large Pelagic Fishery In the NW Coast In: ICAR Sponsored Winter School on Recent Advances in Fishery Biology Techniques for Biodiversity Evaluation and Conservation, 1-21 December 2018, Kochi. [Teaching Resource]