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气候波动对小鲱鱼渔业的影响及其在加的斯湾的经济效益。

Effect of climatic oscillations on small pelagic fisheries and its economic profit in the Gulf of Cadiz.

机构信息

Departamento de Biología, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz. Campus de Excelencia Internacional del Mar (CEIMAR), Avda. República Saharaui, s/n, 11510, Puerto Real, Cadiz, Spain.

Instituto Universitario de Investigación Marina (INMAR), Campus de Excelencia Internacional del Mar (CEIMAR), Avda. República Saharaui, s/n, 11510, Puerto Real, Cadiz, Spain.

出版信息

Int J Biometeorol. 2022 Mar;66(3):613-626. doi: 10.1007/s00484-021-02223-9. Epub 2021 Nov 27.

DOI:10.1007/s00484-021-02223-9
PMID:34837529
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8850237/
Abstract

Several studies have shown the effect of climatic oscillations on fisheries. Small pelagic fish are of special global economic importance and very sensitive to fluctuations in the physical environment in which they live. The main goal of this study was to explore the relationship between the North Atlantic Oscillation (NAO), the East Atlantic pattern (EA), and the Arctic Oscillation (AO) on the landings and first sale prices of the most representative small pelagic commercial species of the purse-seine fisheries in the Gulf of Cadiz (North East Atlantic), the European anchovy Engraulis encrasicolus and the European sardine Sardine pilchardus. Generalised linear models (GLMs) with different data transformations and distribution errors were generated to analyse these relationships. The best results of the models were obtained by applying a moving average of order 3 to the dataset with a double weighted median. Our results demonstrate relationships between NAO, AO, and EA and European anchovy and sardine landings. These cause an indirect effect on the first sale price in markets through catch variations, which affect the price according to the law of supply and demand. The limitations of this study and management implications are discussed.

摘要

已有多项研究表明气候波动对渔业的影响。小型中上层鱼类在全球经济中具有特殊的重要性,对其生存的物理环境的波动非常敏感。本研究的主要目的是探索北大西洋涛动(NAO)、东大西洋模式(EA)和北极涛动(AO)与加的斯湾(东北大西洋)刺网渔业中最具代表性的小型中上层商业物种的登陆量和首次销售价格之间的关系,这些物种包括欧洲鳀鱼 Engraulis encrasicolus 和欧洲沙丁鱼 Sardine pilchardus。生成了具有不同数据转换和分布误差的广义线性模型(GLMs)来分析这些关系。通过对数据集应用三阶移动平均值,并采用双加权中位数,模型得到了最佳结果。我们的研究结果表明,NAO、AO 和 EA 与欧洲鳀鱼和沙丁鱼的登陆量之间存在关系。这些通过渔获量的变化对市场上的首次销售价格产生间接影响,这会根据供求规律影响价格。讨论了本研究的局限性和管理意义。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/43e0/8850237/deb9fa630e1e/484_2021_2223_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/43e0/8850237/266c924729b6/484_2021_2223_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/43e0/8850237/58e888698774/484_2021_2223_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/43e0/8850237/deb9fa630e1e/484_2021_2223_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/43e0/8850237/266c924729b6/484_2021_2223_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/43e0/8850237/58e888698774/484_2021_2223_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/43e0/8850237/deb9fa630e1e/484_2021_2223_Fig3_HTML.jpg

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