Population distribution, structure and growth condition of Antarctic krill(Euphausia superba Dana) during the austral summer in the Southern Ocean
文献类型：CNKI期刊论文
| 作者 | SHI Yongqiang ; SUN Song; LI Chaolun; TAO Zhencheng
|
| 发表日期 | 2014-09-15 |
| 出处 | Advances in Polar Science
 |
| 关键词 | Euphausia superba,population distribution,growing state,sea ice,Weddell Sea,Prydz Bay |
| 英文摘要 | Antarctic krill(Euphausia superba Dana) was collected using a High Speed Collector and an Isaac–Kidd midwater trawl(IKMT) net during the austral summer of 2007/2008 and 2008/2009 in the circumpolar and Prydz Bay regions of the Southern Ocean, respectively. Combined with the simultaneous recording of environmental factors, spatial distribution, population structure and growth condition of E. superba were studied. The abundance of E. superba in the Weddell Sea was higher than in Prydz Bay. However, the abundance of E. superba in both the Weddell Sea and Prydz Bay was lower than figures reported in previous krill surveys for the same time period. With respect to the total study area, E. superba displayed a normal growing state during the two expeditions. E. superba grew relatively poorly in some stations, which may be due to the late retreat of sea ice or lower chlorophyll a concentrations. The number of juvenile E. superba collected using the High Speed Collector was proportionally greater in stations located at the edge of the sea ice, while adults dominated in long-term non-ice regions. This phenomenon refl ects the different distribution pattern between juvenile and adult krill. The population structure of E. superba differed between sea regions, which may affect recruitment. |
| DOI标识 | 10.13679/j.advps.2014.3.00183 |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | supported by the Polar Research Strategy Foundation of China (Grant no. 20120308) ; the Chinese Polar Environment Comprehensive Investigation & Assessment Programmes (Grant nos. CHINARE2013-01-06 and CHINARE2013-01-05) |
| 卷 | v.25;No.56期:03页:54-62 |
| 语种 | 英文; |
| 分类号 | S932.51 |
| ISSN号 | 1674-9928 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190333]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.UniversityofChineseAcademyofSciences 2.KeyLaboratoryofMarineEcologyandEnvironmentSciences,InstituteofOceanology,ChineseAcademyofSciences 3.JiaozhouBayMarineEcosystemResearchStation,InstituteofOceanology,ChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | SHI Yongqiang,SUN Song,LI Chaolun,et al. Population distribution, structure and growth condition of Antarctic krill(Euphausia superba Dana) during the austral summer in the Southern Ocean. 2014. |
入库方式： OAI收割
来源：海洋研究所
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