| 2019年秋冬季南设得兰群岛南极磷虾集群时空分布特征 |
| |
| 引用本文： | 李帅,李灵智,冯超,杨嘉樑,张港琛,饶欣,黄洪亮.2019年秋冬季南设得兰群岛南极磷虾集群时空分布特征[J].水产学报,2022,46(3):349-358. |
| |
| 作者姓名： | 李帅 李灵智 冯超 杨嘉樑 张港琛 饶欣 黄洪亮 |
| |
| 作者单位： | 中国水产科学研究院东海水产研究所,中国水产科学研究院东海水产研究所,中国水产科学研究院东海水产研究所,中国水产科学研究院东海水产研究所,中国水产科学研究院东海水产研究所,中国水产科学研究院东海水产研究所,中国水产科学研究院东海水产研究所,中国水产科学研究院东海水产研究所 |
| |
| 基金项目： | 山东省重点研发计划项目(2019JZZY010819); 国家重点研发计划项目(2018YFC1406803); 中国水产科学研究院基本科研业务费资助项目( 2021TD03) |
| |
| 摘 要： | 为了进一步研究南设得兰群岛附近海域南极磷虾集群时空分布特征，基于2019年秋冬季（4—7月）中国南极磷虾生产渔船声学调查及商业捕捞数据，从时空两个维度对南极磷虾集群中心深度、集群所处水深水温和集群形态进行了分析。结果显示，南设得兰群岛附近海域南极磷虾集群中心深度、集群所处水深水温和集群形态存在明显的时空差异。平均集群中心深度在4—7月总体呈递增趋势(变化范围为34.39～86.12 m)，昼夜差异较小(P=0.325)，峰值时段为日升阶段(sun rising, SRS)(64.06 m)和夜间(night, NIT)(65.32 m)；平均集群中心深度低值区间为62.75°～63.75°S和58.25°～59.75°W，高值区间为61.75°～62.25°S和60.25°～61.75°W。平均集群所处水深水温在4—7月总体呈递减趋势(变化范围为-1.71～-1.50℃)，昼夜集群水温差异明显，峰值时段为NIT(夜间)(-1.46℃)和暮光(evening twilight, ETW)(-1.4℃)；平均集群所处水深水温低值区间为62.75°～63.75°S和61.25°～61.75°...
|
| 关 键 词： | 南极磷虾 集群 时空分布 南设得兰群岛 |
| 收稿时间： | 2021/10/19 0:00:00 |
| 修稿时间： | 2022/1/14 0:00:00 |
Temporal and spatial distribution characteristics of Antarctic krill (Euphausia superba) aggregations in South Shetland Islands in autumn and winter of 2019 |
| |
| LI Shuai,LI Lingzhi,FENG Chao,YANG Jialiang,ZHANG Gangchen,RAO Xin,HUANG Hongliang.Temporal and spatial distribution characteristics of Antarctic krill (Euphausia superba) aggregations in South Shetland Islands in autumn and winter of 2019[J].Journal of Fisheries of China,2022,46(3):349-358. |
| |
| Authors: | LI Shuai LI Lingzhi FENG Chao YANG Jialiang ZHANG Gangchen RAO Xin HUANG Hongliang |
| |
| Institution: | Key Laboratory of Oceanic and Polar Fisheries,Ministry of Agriculture and Rural Affairs,Key Laboratory of Oceanic and Polar Fisheries,Ministry of Agriculture and Rural Affairs,Key Laboratory of Oceanic and Polar Fisheries,Ministry of Agriculture and Rural Affairs,Key Laboratory of Oceanic and Polar Fisheries,Ministry of Agriculture and Rural Affairs,Key Laboratory of Oceanic and Polar Fisheries,Ministry of Agriculture and Rural Affairs,Key Laboratory of Oceanic and Polar Fisheries,Ministry of Agriculture and Rural Affairs,Key Laboratory of Oceanic and Polar Fisheries,Ministry of Agriculture and Rural Affairs,Key Laboratory of Oceanic and Polar Fisheries,Ministry of Agriculture and Rural Affairs |
| |
| Abstract: | At present, the development of marine fisheries worldwide is facing a serious decline of offshore fishery resources, and the global offshore biological resources are in a state of rapid shortage. Antarctic krill, as the biological group with the most biomass in the Antarctic waters, is also one of the most successful single biological resources on the earth, and is an important component of the development of offshore fisheries in all countries in the world. Due to the overexploitation of offshore fishery resources, China is also facing the problem of decline of fishery resources. Antarctic krill has an aggregation of living habits, and there is some diel vertical movement. The aggregation behavior of Antarctic krill is not only related to its own characteristics, but also affected by physical, chemical and biological environmental factors. Antarctic krill have different aggregation responses to different influencing factors, including diel differences and aggregation types. The aggregation behavior not only profoundly affects the growth of Antarctic krill, but also has an important impact on the distribution of its population. Antarctic krill is a key species in the ecosystems of the Southern Ocean and Antarctica. The aggregation behavior has an extremely important impact on the structure of Antarctic fish and other biological resources and the Southern Ocean ecosystem. It is of great significance to study the spatiotemporal characteristics of Antarctic krill aggregation. At present, the rules of Antarctic krill aggregation and diel vertical movement have not been uniformly concluded. Therefore, it is necessary to study the aggregation and diel movement habits of Antarctic krill from more perspectives. At the same time, in addition to paying attention to the breadth of the research, the continuity of the research time and area should also be paid attention to in the research process. The Chinese government has attached great importance to the survey of Antarctic marine biological resources for a long time. It has been more than 30 years since the first scientific survey of Antarctica was carried out in 1984. Relevant research on Antarctic marine biological resources has always been an important part of Antarctic expeditions, involving Antarctic krill, plankton and microorganisms, especially in the multidisciplinary comprehensive surveys carried out in the waters near the Antarctic Peninsula. At the same time, China has also actively organized and participated in the international joint survey of Antarctic krill resources, opening a new window for the basic research and sustainable development and utilization of Antarctic krill. Based on the acoustic survey data of Chinese Antarctic krill production fishing vessels and commercial fishing data in the 2018/19 fishing season, this study analyzed the spatiotemporal distribution characteristics in the waters near the South Shetland Islands from three aspects: the center depth, water temperature, and morphology of Antarctic krill aggregations. The spatiotemporal distribution characteristics of Antarctic krill aggregations are expected to further study the habits of Antarctic krill aggregations in the waters near the South Shetland Islands and provide information for the study of Southern Ocean ecosystems and Antarctic fishery resources. |
| |
| Keywords: | Antarctic krill aggregation temporal and spatial distribution South Shetland Islands |
|
| 点击此处可从《水产学报》浏览原始摘要信息 |
| 点击此处可从《水产学报》下载免费的PDF全文 |
|
