长江口不同渔业群体取样力度的优化

IF 1.8 3区 农林科学 Q2 FISHERIES
Jing Zhao, Keer Yang, Jin Ma
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引用次数: 0

摘要

长江口在长江流域渔业资源保护中发挥着重要作用,中国政府在长江口建立了专门的禁渔管理区。为了评估捕鱼禁令的影响,需要确定和执行调查设计和适当的努力。本研究利用长江三角洲长期拖网调查数据(2004-2017年),探讨调查工作(通过系统分层抽样选择8-30个连续调查站)对长江三角洲不同渔业群体丰度估计值的精度和准确性的影响。给定数量的调查站的估计精度因季节和渔业组而异。系统抽样的精度随台站数量的变化而波动。按比例分配分层抽样的精度随着调查站数量的增加而逐渐提高。我们建议对使用检验抽样方法抽样的所有渔业组包括15-20个调查站。本研究为保护背景下长江三角洲渔业独立调查的调查力度(站数)选择提供了研究参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Optimization of Sampling Effort for Different Fishery Groups in the Yangtze River Estuary, China

Optimization of Sampling Effort for Different Fishery Groups in the Yangtze River Estuary, China

The Yangtze River Estuary (YRE) plays an important role in the conservation of fishery resources in the Yangtze River basin, and the Chinese government has established a special fishing ban management area at the YRE. To assess effects of the fishing ban, survey design and appropriate effort need to be determined and implemented. This study used long-term trawl survey data of the YRE (2004–2017) to explore the effects of survey effort (8–30 continuous survey stations selected by systematic and stratified sampling) on precision and accuracy of estimates of abundance of different fishery groups in the YRE. Estimated precision for a given number of survey stations varied by season and fishery group. Precision of systematic sampling fluctuated with the number of stations. Precision of stratified sampling with a proportional allocation scheme gradually increased with the number of survey stations. We suggest including 15–20 survey stations for all fishery groups sampled using the examined sampling methods.This study provides a research reference for selecting the survey effort (number of survey stations) for a fishery-independent survey in the YRE under the backgroud of conservation.

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来源期刊
Marine and Coastal Fisheries
Marine and Coastal Fisheries FISHERIES-MARINE & FRESHWATER BIOLOGY
CiteScore
3.40
自引率
5.90%
发文量
40
审稿时长
>12 weeks
期刊介绍: Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science publishes original and innovative research that synthesizes information on biological organization across spatial and temporal scales to promote ecologically sound fisheries science and management. This open-access, online journal published by the American Fisheries Society provides an international venue for studies of marine, coastal, and estuarine fisheries, with emphasis on species'' performance and responses to perturbations in their environment, and promotes the development of ecosystem-based fisheries science and management.
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