| Vertical occurrence of copepod carcasses in the Cosmonaut Sea during austral summer | |
Yang, Guang1,2,3; Mou, Wenxiu1,2,4; Chen, Xiaoli1,2,4; Xu, Zhiqiang5 ; Wang, Yanqing6; Li, Chaolun1,2,3,4,7
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| 2022-04-01 | |
| 发表期刊 | DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
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| ISSN | 0967-0645 |
| 卷号 | 198页码:7 |
| 通讯作者 | Li, Chaolun(lcl@qdio.ac.cn) |
| 摘要 | Zooplankton carcasses and their contribution to carbon export are increasingly garnering attention in food web studies of polar oceans. We investigated the occurrence of carcasses of dominant copepod species at four depths (100-200 m, 200-500 m, 500-1000 m, 1000-1500 m) and their potential contribution to particulate organic carbon (POC) concentrations in the Cosmonaut Sea, Antarctica, during summer, 2019/2020. The abundance of small copepods (< 2 mm), either live or dead individuals, was 1-3 orders of magnitude higher than the four dominant large copepod species Calanoides acutus, Calanus propinquus, Metridia gerlachei and Rhincalanus gigas at each depth. Most carcasses were observed at the surface (100-200 m), while the proportions of dead individuals increased with depth, from 22% in the 100-200 m layer to 70% of the 500-1500 m layer. The total number of passive sinkers (carcasses and moults) was dominated by carcasses of small copepods in each depth layer, while the carbon biomass of passive sinkers was dominated by carcasses of large copepods. Both abundance and carbon biomass of passive sinkers decreased with depth. The average contribution of passive sinkers to the POC con-centration decreased from 0.27% in the 100-200 m depth stratum to 0.10% in the 500-1500 m layer. This study provides the first report of occurrence and contribution of carcasses from the surface to the mesopelagic layer of the Southern Ocean. This information can improve understanding of the role zooplankton play in downward carbon flux within the ocean's twilight zone. |
| 关键词 | Zooplankton Carcasses Particulate organic carbon Mesopelagic zone Cosmonaut sea Southern ocean |
| DOI | 10.1016/j.dsr2.2022.105051 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Science Foundation of China[41876217] ; Impact and Response of Antarctic Seas to Climate Change[IRASCC 01-02-01D] |
| WOS研究方向 | Oceanography |
| WOS类目 | Oceanography |
| WOS记录号 | WOS:000792647800005 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/179243 |
| 专题 | 胶州湾海洋生态系统国家野外研究站 海洋环境工程技术研究发展中心 深海极端环境与生命过程研究中心 |
| 通讯作者 | Li, Chaolun |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, 7 Nanhai Rd, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Mega Sci, 7 Nanhai Rd, Qingdao 266071, Peoples R China 4.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, Jiaozhou Bay Marine Ecosyst Res Stn, Qingdao 266071, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Engn Technol Dept, Qingdao 266071, Peoples R China 7.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 通讯作者单位 | 中国科学院海洋研究所; 深海极端环境与生命过程研究中心 |
| 推荐引用方式 GB/T 7714 | Yang, Guang,Mou, Wenxiu,Chen, Xiaoli,et al. Vertical occurrence of copepod carcasses in the Cosmonaut Sea during austral summer[J]. DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY,2022,198:7. |
| APA | Yang, Guang,Mou, Wenxiu,Chen, Xiaoli,Xu, Zhiqiang,Wang, Yanqing,&Li, Chaolun.(2022).Vertical occurrence of copepod carcasses in the Cosmonaut Sea during austral summer.DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY,198,7. |
| MLA | Yang, Guang,et al."Vertical occurrence of copepod carcasses in the Cosmonaut Sea during austral summer".DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY 198(2022):7. |
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