北极楚科奇海及其附近海域海底底栖贝类遗壳分布

高爱国; 徐凤山; 李朗; 刘峰; 陈爱萍; 孙海青

北极楚科奇海及其附近海域海底底栖贝类遗壳分布

1.
国家海洋局第一海洋研究所山东青岛 266061
2.
中国科学院海洋研究所山东青岛 266071

基金项目: 国家自然科学基金资助项目(49873015;40176017;40233032;40376017)

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出版历程
- 收稿日期: 2004-03-26
- 修回日期: 2004-09-17

Distribution of molluscan remains in the sediment of the Chukchi Sea in the Arctic and its vicinity

1.
First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
2.
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

摘要

摘要: 对采自北极的23个站的底栖贝类遗壳进行鉴定,结果表明这些贝类遗壳计有17个种,其中双壳纲13种,腹足纲4种.根据鉴定到种的13个种可将所鉴定的软体动物分为两个区系:北极和环北极寒温带种,它们是Astarte montagui,Liocyma fluctusa,Macoma calcarea,M.moesta alas-kana,Mya pseudoarenaria,Nuculana pernula,N.radiata,Nucula bellotii,Serripes groenlan-dicus和Turritella polaris,共计10种,它们是北极水域软体动物区系组成中的主要成分;北极北太平洋寒温带种,它们是Argobuccinum oregonense,Cyclocardia crebricostata和Trichotropis cor-onata有3种.根据食性又可将它们分成滤食性、肉食性和碎食性三种,其中摄食沉积物中有机碎屑的碎食性种类占优势,包括双壳类中的Macoma calcarea,M.moesta alaskana,Macoma sp.,Nuculana pernula,N.radiata,Nucula bellotii,和腹足类的Trichotropis coronata,共计7种,它们不仅种类多,丰度高,而且在调查区的分布同细颗粒的沉积物有密切关系.
- 楚科奇海 /
- 波弗特海 /
- 白令海 /
- 底栖贝类
Abstract: The results of an analysis of molluscan remains collected from the Chukchi Sea,the Beaufort Sea and the Bering Sea during the first Chinese national arctic research expedition,from July to September 1999.Seventeen species of molluscs have been identified,and they belong to two classes:Bivalvia and Gastropoda.The compositions of Mollusca from the above mentioned areas are very simple.According to the distribution pattern,among the molluscan species two groups may be distinguished.The panarctic and circumboreal group comprises A starte montagui,Liocymaf luctuosa,Macoma calcarea,M.moestaalas-kana,Mya pseudoarenaria,Nuculana pernula,N.radiata,Nucula bellotii,Seripes groenlandicus and Turritellapolaris.Three species,Argobuccinum oregonense,Cyclocardiacrebri costata and Trichotroiscoronata are components of the panarctic and Pacific boreal group.With regard to feeding habits,detritus feeders dominate.There are seven species of detritus feeders,i.e.,Macomacalcarea,M.moestaal askana,Macoma sp.,Nuculana pernula,N.radiata,Nucula bellotii and Trichotropis coronata.Detritus feeders are dominant with regard to the numbers of species as well as to the occurrence frequency.Macomacal carea is the most abundant species.
- Chukchi Sea /
- Beaufort Sea /
- Bering Sea /
- molluscan remains

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