2011年夏秋季南奥克尼群岛水域南极磷虾集群时空分布

生态学杂志

2011年夏秋季南奥克尼群岛水域南极磷虾集群时空分布

朱国平^1,2,3,4,朱小艳²,夏辉²,李莹春²,许柳雄^1,2,3,4**

（¹国家远洋渔业工程技术研究中心，上海 210306； ²上海海洋大学海洋科学学院，上海 201306； ³大洋渔业资源可持续开发省部共建教育部重点实验室，上海海洋大学，上海 201306； ⁴农业部大洋渔业资源环境科学观测实验站，上海海洋大学，上海 201306）

出版日期:2013-04-10 发布日期:2013-04-10

Spatiotemporal distribution patterns of Antarctic krill aggregations around the South Orkney Islands in austral summer-autumn 2011.

ZHU Guo-ping^1,2,3,4, ZHU Xiao-yan², XIA Hu², LI Ying-chun², XU Liu-xiong^1,2,3,4**

(¹National Distantwater Fisheries Engineering Research Center, Shanghai 201306, China; ²College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China; ³The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306, China; ⁴Scientific Observing and Experimental Station of Oceanic Fishery Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai 201306, China)

Online:2013-04-10 Published:2013-04-10

摘要/Abstract

摘要：

基于2011年度夏秋季中国南极磷虾渔业科学观察员在大型拖网加工船“开欣轮”上收集的影像资料（作业水域为南奥克尼群岛周边海域，时间为2011年3月6日—4月21日），对该水域南极磷虾集群的时空分布特征进行了分析。结果表明：南极磷虾群在南奥克尼群岛西北部海域出现的次数较为集中，主要出现在60°00′S—60°15′S，45°30′W—46°30′W区域内；不同水层中，磷虾群主要呈块状分布，0~50 m和50~100 m水层集群类型极为相似（PSI=92.3），散点状、块状和带状磷虾群在0~50 m水层出现比例最高，且块状磷虾群和带状磷虾群在各水层中的分布极为相似（PSI=94.4）；1:00—18:00南极磷虾群出现频率较高，随后比例开始下降，19:00—20:00出现频率最低。

关键词: 茶园, 耕作方式, 土壤物理性状, 茶叶产量

Abstract: Based on the video records collected by the Chinese scientific observers of Antarctic krill fishery abroad the large-scale factory trawler “KAIXIN”, which operated around the South Orkney Islands in the austral summer-autumn 2011 (March 6 to April 21, 2011), this paper analyzed the spatiotemporal distribution patterns of the Antarctic krill aggregations in the water areas of the Islands. The Antarctic krill aggregation were concentrated in the northwestern water areas of the Islands, and limited mostly at 60°00′S-60°15′S and 45°30′W-46°30′W. In different water layers, the aggregations were dominated in patched distribution. The percentage similarity index (PSI) analysis showed that there was a high similarity of 92.3 between the 0-50 m and 50-100 m water layers. The scattered, patched, and belted aggregations had the highest proportion of occurrence in 0-50 m water layer, and the patched and belted aggregations had a very similar distribution pattern in different water layers (PSI=94.4). The time segment with higher occurrence of Antarctic krill aggregations was from 1:00 to 18:00, and the occurrence decreased gradually to the lowest level from 19:00 to 20:00. This study could provide basic data for better understanding the formation mechanism of Antarctic krill fishing ground, and the operational references for exploiting Antarctic krill resources.

Key words: tea garden, tillage method, soil physical characteristics, tea yield.

朱国平1,2,3,4,朱小艳2,夏辉2,李莹春2,许柳雄1,2,3,4**. 2011年夏秋季南奥克尼群岛水域南极磷虾集群时空分布[J]. 生态学杂志.

ZHU Guo-ping1,2,3,4, ZHU Xiao-yan2, XIA Hu2, LI Ying-chun2, XU Liu-xiong1,2,3,4**. Spatiotemporal distribution patterns of Antarctic krill aggregations around the South Orkney Islands in austral summer-autumn 2011.[J]. cje.

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