| Wang Xuehui,Qiu Yongsong,Du Feiyan,Liu Weida,Sun Dianrong,Chen Xiao,Yuan Weiwen,Chen Yong.Roles of fishing and climate change in long-term fish species succession and population dynamics in the outer Beibu Gulf, South China Sea[J].Acta Oceanologica Sinica,2019,38(10):1-8 |
| 捕捞和气候变化在南海北部湾口鱼类长期种类演替和种群动态的作用 |
| Roles of fishing and climate change in long-term fish species succession and population dynamics in the outer Beibu Gulf, South China Sea |
| 投稿时间：2018-10-31 |
| DOI：10.1007/s13131-019-1484-5 |
| 中文关键词: 鱼类种类演替|生物量波动|捕捞影响|气候影响|北部湾|南海北部 |
| 英文关键词:fish species succession|biomass fluctuation|fishing effect|climate influence|Beibu Gulf|northern South China Sea |
| 基金项目:The Science and Technology Basic Resources Investigation Program of China under contract No. 2017FY201405; the Open Research Fund Program of Guangxi Key Lab of Mangrove Conservation and Utilization under contract No. GKLMC-201403; the National Natural Science Foundation of China under contract No. 41666008; the Fund of Key Laboratory of Open-Sea Fishery Development, Ministry of Agriculture of China under contract No. LOF 2018-01; the Natural Science Foundation of Guangxi under contract No. 2016GXNSFDA380035. |
| 作者 | 单位 | E-mail | | 王雪辉 | 中国水产科学研究院南海水产研究所, 广州 510300, 中国
农业农村部外海渔业开发重点实验室, 广州 510300, 中国
广东省渔业生态环境重点实验室, 广州 510300, 中国
School of Marine Sciences, University of Maine, Orono, Maine 04469, USA | wxhscs@163.com | | 邱永松 | 中国水产科学研究院南海水产研究所, 广州 510300, 中国
农业农村部外海渔业开发重点实验室, 广州 510300, 中国 | | | 杜飞雁 | 中国水产科学研究院南海水产研究所, 广州 510300, 中国
广东省渔业生态环境重点实验室, 广州 510300, 中国 | | | 刘维达 | 中国水产科学研究院南海水产研究所, 广州 510300, 中国 | | | 孙典荣 | 中国水产科学研究院南海水产研究所, 广州 510300, 中国
广东省渔业生态环境重点实验室, 广州 510300, 中国 | | | 陈骁 | 华南农业大学海洋学院, 广州 510642, 中国
广西科学院广西红树林研究中心, 广西红树林保护与利用重点实验室, 北海 536000, 中国 | | | 袁蔚文 | 中国水产科学研究院南海水产研究所, 广州 510300, 中国 | | | Chen Yong | School of Marine Sciences, University of Maine, Orono, Maine 04469, USA | |
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| 中文摘要: |
| 捕捞压力在改变南海鱼类种类演替和生物量波动方面所起的作用大于气候和环境因素是一个普遍的、有争议的假设。根据1959~2010年南海北部北部湾口底拖网的调查数据，报告了该海域鱼类种类组成、优势类群的丰度比例、生物量的季节和年际变化。建立了鱼类生物量与捕捞压力和气候变化外部因素之间的广义加性模型。结果表明，捕捞压力驱动底层渔业资源急剧下降的主要因素，并随着时间的推移，高值鱼类被低值鱼类所取代。1993年和1998年期间鱼类生物量的突然减少与同期厄尔尼诺事件相对应，气候变化可能是渔业拖网捕捞中中上层鱼类比例变化的主要驱动因素。为了更好地了解鱼类群落动态，需要区分捕捞压力和环境驱动因素对不同生活史策略鱼类物种的影响。 |
| 英文摘要: |
| A prevailing, controversial hypothesis is that fishing pressure has played a greater role than climatic and environmental drivers, in changing fish species succession and biomass fluctuation in the South China Sea (SCS). Based on otter trawl survey data from 1959 to 2010 in the outer Beibu Gulf (OBG), northern SCS, large seasonal and interannual variation is reported for fish species composition, the proportional abundances of dominant taxa, and fish biomass. Generalized additive models are developed to quantify relationships between fish biomass and the external factors of fishing pressure and climate change. Fishing pressure proved to be the main driver of sharp declines in demersal fish stocks, with high-value species being replaced by low-value ones over time. Abrupt decreases in fish biomass during the years of 1993 and 1998 correspond to El Niño events, with climate change possibly the main driver of proportional representation of pelagic species in fisheries trawl catch. The need to differentiate impacts of fishing and environmental drivers on fish species with different life history strategies is stressed to better understand fish community dynamics. |
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