南方农业学报2023，Vol.54Issue(9) ：2800-2810.DOI:10.3969/j.issn.2095-1191.2023.09.031

生态因子对雷州湾海域鱼类重要种分布影响的量化评价

Quantitative evaluation of the effects of ecological factors on the distribution of important fishes in Leizhou Bay

陈志劼 刘伟豪 潘士远 王学锋 吕少梁
南方农业学报2023，Vol.54Issue(9) ：2800-2810.DOI:10.3969/j.issn.2095-1191.2023.09.031
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  • 维普
  • 万方数据

生态因子对雷州湾海域鱼类重要种分布影响的量化评价

Quantitative evaluation of the effects of ecological factors on the distribution of important fishes in Leizhou Bay

陈志劼 1刘伟豪 2潘士远 1王学锋 1吕少梁1
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作者信息

  • 1. 广东海洋大学水产学院,广东湛江 524088;南方海洋科学与工程广东省实验室(湛江),广东湛江 524025
  • 2. 广东海洋大学水产学院,广东湛江 524088
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摘要

[目的]量化生物及非生物生态因子对雷州湾海域鱼类重要种分布的影响,厘清鱼类对各种变量变动的响应,为今后预测该海域渔业资源的丰度变动及基于群落视角的渔业管理和研究提供实例.[方法]根据2018-2020年每年春、秋季于雷州湾开展的底拖网鱼类调查数据,先利用相对重要性指数(IRI)筛选出生态鱼类重要种,用于构建联合物种分布模型(JSDMs);进而结合冗余分析(RDA)进行验证,以量化评价生态因子对鱼类重要种种群分布的作用.[结果]2018-2020年在雷州湾逐年春、秋两季调查共捕获鱼类217种,其中17种鱼类(IRI≥100)为生态重要种;构建的联合物种分布模型较好地反映了鱼类实际分布(后验拟合效果R2=0.46);环境因子对雷州湾海域鱼类重要种的分布影响最大(达61.3%),其中溶解氧(DO)的作用最大(DO=4.39～10.36,21.6%),而不同鱼类对不同生态因子的耐受性或其栖息地偏好也是导致分布年际波动的原因之一;总体上,种间作用对鱼类分布的影响相对较小(38.7%),但对部分鱼类如条纹叫姑鱼(Johnius fasciatus,84.5%)、皮氏叫姑鱼(Johnius belangerii,73.0%)和棕斑兔头鲀(Lago-cephalus spadiceus,60.9%)等的分布起着决定性作用.[结论]环境因子主要影响雷州湾鱼类的分布,不同鱼类因环境耐受或生境偏好存在明显的年际差异;种间作用对鱼类分布的影响相对较小,但对部分鱼类如条纹叫姑鱼、皮氏叫姑鱼和棕斑兔头鲀等起关键性作用.

Abstract

[Objective]To quantify the effects of biological and abiotic ecological factors on the distribution of im-portant fishes in Leizhou Bay,and clarify the response of fishes to changes in various variables,so as to provide exam-ples for future prediction of changes in the abundance of fishery resources in this area and fishery management and research based on community perspective.[Method]Based on the data of bottom trawl fish survey conducted in Lei-zhou Bay every spring and autumn from 2018 to 2020,the relative importance index(IRI)was used to screen out the important ecological fish species and construct the joint species distribution model(JSDMs).Then,redundancy analy-sis(RDA)was combined to verify the effect of ecological factors on the population distribution of important fish species.[Result]A total of 217 fishes had been identified in spring and autumn during 2018-2020 in Leizhou Bay and 17 of them(IRI≥100)were viewed as ecologically important fishes;constructed joint species distribution model well presented the actual distribution of fishes(posterior fit effect R2=0.46);environmental factors had the greatest effect on the distribution of important fishes in Leizhou Bay(up to 61.3%),among which the effect of dissolved oxygen(DO)was the greatest(DO=4.39-10.36,21.6%),and the tolerance of different fishes to different ecological factors or habi-tat preference was also one of the reasons for the inter-annual distribution fluctuation.Overall,the effect of interspecific interaction on fish distribution was relatively small(38.7%),but played a decisive role for some fishes such as Joh-nius fasciatus(84.5%),J.belangerii(73.0%)and Lagocephalus spadiceus(60.9%).[Conclusion]Environmental factors mainly affect the distribution of fishes in Leizhou Bay,and there are obvious interannual differences among different fishes due to environmental tolerance or habitat preference.The effect of interspecific interaction on the distribution of fishes is relatively small,but it plays a key role in some fish,such as J.fasciatus,J.belangerii and L.spadiceus.

关键词

联合物种分布模型/环境因子/种间作用/鱼类群落/雷州湾

Key words

joint species distribution models/environmental factors/species interaction/fish community/Leizhou Bay

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基金项目

国家重点研发计划"蓝色粮仓科技创新"重点专项(2020YFD0901103)

中国—东盟海上合作基金(2020YFD0901103)

出版年

2023
南方农业学报
广西壮族自治区农业科学院

南方农业学报

CSTPCDCSCD北大核心
影响因子：0.83
ISSN：2095-1191
参考文献量9
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