Accelerated recruitment of copepod <i>Calanus hyperboreus</i> in pelagic slope waters of the western Arctic Ocean

XU Zhiqiang; ZHANG Guangtao; SUN Song

doi:10.1007/s13131-018-1166-8

西北冰洋陆坡区极北哲水蚤种群快速补充研究

doi: 10.1007/s13131-018-1166-8

1.
中国科学院海洋研究所胶州湾海洋生态系统研究站, 山东青岛 266071;中国科学院大学北京100049
2.
中国科学院海洋研究所胶州湾海洋生态系统研究站, 山东青岛 266071
3.
中国科学院海洋研究所胶州湾海洋生态系统研究站, 山东青岛 266071;中国科学院海洋研究所海洋环境与生态实验室山东青岛266071

基金项目: The National Natural Science Foundation of China under contract No. 40406002; the Public Science and Technology Research Funds Projects of Ocean under contract No. 201105022.

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- 收稿日期: 2016-02-29
- 修回日期: 2016-04-07

Accelerated recruitment of copepod Calanus hyperboreus in pelagic slope waters of the western Arctic Ocean

1.
Jiaozhou Bay Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;University of Chinese Academy of Sciences, Beijing 100049, China
2.
Jiaozhou Bay Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
3.
Jiaozhou Bay Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

摘要

摘要: 在北冰洋的高纬度海区，陆坡—海盆之间的交换对极北哲水蚤（Calanus hyperboreus）的种群补充具有非常重要的意义。为了研究极北哲水蚤在西北冰洋种群补充的地理差异，我们利用2003年夏季所采集的样品，分析了该物种的丰度、种群结构和体长分布。从总丰度的地理分布来看，极北哲水蚤主要分布在楚科奇海与楚科奇深海平原之间的陆坡区（CS-slope），而在水深较浅的楚科奇海并没有记录。在CS-slope区域，极北哲水蚤的总丰度在1 110.0—5 815.0个/m³之间，而其他海区的总丰度在40.0—950.0个/m³之间。从不同的发育期分布上来看，早期幼体（CI-CIV）在CS-slope区域占优势，而CV期幼体和成体在深水海盆区占优势。从体长的地理分布上来看，差异最为明显的是CⅢ期幼体，其在CS-slope区域的前体长在2.48—2.61 mm之间，而在其他海区的前体长在2.16—2.37 mm之间。与环境因子相关性的分析结果显示，早期幼体（CI-CIV）的丰度与叶绿素a的浓度呈正相关关系，而CV期幼体和成体却与叶绿素a的浓度呈负相关关系。我们的结果表明，极北哲水蚤可以通过加快第一个生长季节的发育速度而受益于初级生产力的增加，并且高生产力的CS-slope区域是陆坡-海盆之间种群补充的潜在来源。
- 陆坡 /
- 前体长 /
- 种群结构 /
- 食物来源 /
- 生活史周期
Abstract: Shelf-basin advection is essential to subsistence of the Arctic copepod Calanus hyperboreus population in high basin area. Its abundance, population structure and body size in pelagic layer were investigated with samples collected over a large range in the western Arctic Ocean during summer 2003, to evaluate the geographical variation in recruitment pattern. Calanus hyperboreus was absent from the shallow areas of the Chukchi Sea and most abundant in the slope area between the Chukchi Sea and Chukchi Abyssal Plain (CS-slope). Total abundance varied between 1 110.0 and 5 815.0 ind./m² in the CS-slope area and ranged from 40.0 to 950.0 ind./m² in the other areas. Early stages (CI-IV) dominated in the CS-slope area, whereas CV and adult females were frequently recorded only in deep basin areas. Geographical difference of prosome length was most evident in CⅢ, with average ranging from 2.48 to 2.61 mm at the CS-slope stations and 2.16-2.37 mm at the others. Abundance of early developmental stages (CI-CIV) correlated positively with Chl a concentration, but negative correlation was observed in late stages (CV-adult). Our results indicated that C. hyperboreus can benefit from primary production increase through accelerated development in the first growth season and the productive CS-slope area is a potential source for slope-basin replenishment.
- continental slope /
- prosome length /
- population structure /
- food availability /
- life cycle

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西北冰洋陆坡区极北哲水蚤种群快速补充研究

doi: 10.1007/s13131-018-1166-8

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出版历程

Accelerated recruitment of copepod Calanus hyperboreus in pelagic slope waters of the western Arctic Ocean

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