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Acta Oceanologica Sinica 2001年第3期20卷 371-381页

作者： Lu Bing, Chen Ronghua, Wang Zipan, Chen Jianfang, Liu Zhensheng 1. Key Laboratory of Submarine Geosciences, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

Long-chain alkenones were detected in samples of sea surface sediments from the chukchi sea and the Bering sea areas, the Arctic Pole. The analysis result indicates that C37:3 methylketone is predominate in the long-chain alkenones from the chukchi and Bering sea sediments. The abundance of C37 to C39 unsaturated alkenones changes in an order of C37 > C38 > C39. Based on C37 /C38 ratio, the detected organism precursors of the long-chain alkenones are mainly coccolithophrid (Emiliania huxleyi). By the calibration relationship between U37k and U37k indices, the sea surface paleotemperature in these seas is estimated. The estimated values of U37k vary from 4.147℃ to 5.706℃ , with a mean value of 5.092℃.

关键词： Long-chain alkenone SST U37k the chukchi sea the Bering sea paleotemperature

Distribution of general aerobic heterotrophic bacteria in sediment core taken from the Canadian basin and the chukchi sea

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Chinese Journal of Polar Science 2008年第1期19卷 14-22页

作者：高爱国陈皓文 Department of Oceanography College of Oceanography and Environmental ScienceXiamen University State Key Laboratory of Marine Environmental Science Xiamen University First Institute of Oceanography SOA

The occurrence percentage and abundance of General Aerobic Hetero- trophic Bacteria （GAB） were determined by using the method of MPN for 182 sub- samples from 10 sediment cores taken from the Canadian basin and the chukchi sea at two different culturing temperatures. The results showed that the general occurrence percentage of GAB was quite high, average abundanees of GAB at cultured temperatares of 4℃ and 25℃ were 4.46 ×10^7 and 5.47×10^7 cells·g^-1（wt）, respectively. The highest abundance of GAB occurred at 20 -22 cm section in the sediment. GAB abundances changed among the section of sediments, but there is a trend ： the a-bundances at the middle or lower sections were lower than those at upper section. Cultivation at 25℃ could improve the occurrence percentage and abundances of GAB, which suggests that the increasing of temperature may change the living circum-stances of GAB. The differences of GAB among the latitudes areas indicated that occurrence percentage and abundances of GAB in middle latitude areas were higher than those in the higher or lower latitude areas, and were more obvious at 4℃ than those at 25℃. The GAB abundances in sediment under the shallower water seemed to be low- er than those in sediments under the deeper water and this status was more obvious at 25℃ than that at 4℃.

关键词： The Canadian Basin the chukchi sea general aerobic heterotrophicbacteria spatial distribution sediment core.

The substance composition of sterols in the sediments from the chukchi sea,the Bering sea and global climatic significance

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Chinese Journal of Polar Science 2006年第1期17卷 9-19页

作者：卢冰扈传昱潘建明薛斌姚梅 Laboratory of Marine Ecosystem and Biogeochemistry State Oceanic Adminastration Hangzhou 310012 China

The compounds of sterols such as C27 ,C2s ,C29 and C30 are recorded from C-8 core of the chukchi sea. The double bond position is located at 5-, 5,22 as well as 22-,24-. The compound of sterols such as C27 ,C28 ,C29 are recorded from B2-9 core of the Bering sea. The double bond position is located at 5-, 5, 22 as well as 22. The composition characteristics of sterols indicate that the substance is mainly contributed by the terrigenous origin and marine silicate organisms. The results are also suggest that the record of abnormal sterols from the surface sediments （2 -0 era）in the chukchi sea and the Bering sea represent the period from 1980s to the late 1990s. The strong signal of the Arctic warming is preserved in the sediments, which indicates the eco - environmental change responding to climatic effect of circumjacent.

关键词： the chukchi sea the Bering sea biological indicator sterols substance composition.

The Hydromedusae and its distribution in chukchi sea and adjacent southern edge waters of Canada Basin, Arctic Ocean

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Chinese Journal of Polar Science 2001年第2期12卷 133-144页

作者： Zhang Jinbiao ( Third Institute of Oceanography SOA

The present paper is based on materials collected in chukchi sea and adjacent southern edge waters of Canada Basin, Arctic Ocean during the period from July to August 1999 on the icebreaker, the R/V “Xuelong”, by the Chinese First Arctic Scientific Expedition. Totally, 8 species of pelagic Hydromedusae were identified, of which 4 species belonged to Anthomedusae, 2 species to Leptomedusae, 1 species to Trachymedusae and 1 species to Narcomedusae, the Neoturris breviconis is recorded for the first time in chukchi sea. Their principal morphological characteristics are described and illustrated. The 8 species of Hydromedusae occurring in the chukchi sea were all cold water species, of which 6 species belong to neritic species and 2 species to ocean species. According to the geographic distribution of species, they may be divided into three groups: Arctic species, Arctic-boreal species and Boreal-temperate species. From the view-point of zoogeography, species from these waters belong to the Arctic fauna.The abundance of Hydromedusae in chukchi sea was generally low, with a mean value of 108 ind.*10-2*m-3. Rathkea octopunctata and Aglantha digitale were dominant species. From the view-point of vertical distribution Aglantha digitale is inhabiting in the depth of 0 300 m and with the maximum in the depth of 50 m to 100 m.

关键词： Canada Basin the chukchi sea morphological characteristics geographic distribution vertical distribution species of belong to dominant species the Arctic mean value cold water