Impacts of distorted fishery statistical data on assessments of three surplus production models
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Impacts of distorted fishery statistical data on assessments of three surplus production models
Impacts of distorted fishery statistical data on assessments of three surplus production models
海洋湖沼学报(英文)2011年29卷第2期 页码:270-276
Affiliations:
1. Fishery School of Zhejiang Ocean University
2. School of Mechanical and Electrical Engineering of Zhejiang Ocean University
Author bio:
Funds:
Supported by the National Natural Science Foundation for Young Scientists of China (No. 40801225), and the Natural Science Foundation of Zhejiang Province (No. Y3090038)
Impacts of distorted fishery statistical data on assessments of three surplus production models[J]. 海洋湖沼学报(英文), 2011,29(2):270-276.
Wang, Y., Zheng, J. & Wang, Z. Impacts of distorted fishery statistical data on assessments of three surplus production models., Chin. J. Ocean. Limnol. 29, 270–276 (2011). https://doi.org/10.1007/s00343-011-0138-z
Impacts of distorted fishery statistical data on assessments of three surplus production models[J]. 海洋湖沼学报(英文), 2011,29(2):270-276. DOI: 10.1007/s00343-011-0138-z.
Wang, Y., Zheng, J. & Wang, Z. Impacts of distorted fishery statistical data on assessments of three surplus production models., Chin. J. Ocean. Limnol. 29, 270–276 (2011). https://doi.org/10.1007/s00343-011-0138-zDOI:
Impacts of distorted fishery statistical data on assessments of three surplus production models
摘要
Abstract
We evaluated the effect of various error sources in fishery harvest/effort data on the maximum sustainable yield (MSY) and corresponding fishing effort (E MSY) using Monte Carlo simulation analyses. A high coefficient of variation (CV) of the catch and effort values biased the estimates of MSY and E MSY. Thus
the state of the fisheries resource and its exploitation was overestimated. We compared the effect using three surplus production models
Hilborn-Waters (H-W)
Schnute
and Prager models. The estimates generated using the H-W model were significantly affected by the CV. The Schnute model was least affected by errors in the underlying data. The CV of the catch data had a greater impact on the assessment than the CV of the fishing effort. Similarly
the changes in CV had a greater impact on the estimated maximum sustainable yield (MSY) than on the corresponding estimate of fishing effort (E MSY). We discuss the likely effect of these biases on management efforts and provide suggestions for the improvement of fishery evaluations.
关键词
Keywords
references
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