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Report of Prionospio complex(Annelida:Polychaeta:Spio-nidae) from china's waters,with description of a new species

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Acta Oceanologica Sinica 2009年第1期28卷 116-127页

作者： ZHOU Jin LI Xinzheng institute of oceanology. Chinese Aeademy of Sciences Qingdao 266071 China Graduate School Chinese Academy of Sciences Beijing 100039 China

Nine species of Prionospio complex are recorded from china＇s waters,including one new species and six newly recorded ***（Prionospio） pacifica ***.,is characterized by having first and forth pairs of branchiae pinnate,second and third pairs of apinnate,ventral crest on Setiger 9 and dorsal crests on Setigers *** kirrae（Wilson,1990）,Prionospio（Aquilaspio） convexa Imajima,1990,Prionospio（Minuspio） multibranchiata Berkeley,192.,Prionospio（Prionospio） bocki Sderstrm,192.,Prionospio（Prionospio） dubia Maciolek,1985 and Prionospio（Prionospio） paradisea Imajima,1990 are recorded for the first time from china＇s waters.

关键词： taxonomy Prionospio complex new species newly recorded species china's waters.

A new spceies of N assarius(Gastropoda,Nassariidae)from the northern china seas

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Acta Oceanologica Sinica 2011年第6期30卷 82-85页

作者： YANG Jingwen ZHANG Suping institute of oceanology Chinese Academy of Sciences Qingdao 266071 China Graduate University of chinese academy of sciences Beijing 10049 China

A new species, Nassarius （Zeuxis） humeratus n. sp. of Nassariidae was described based on the specimens collected in the Huanghai Sea （Yellow Sea） and Bohai Sea during the expedition from 1958 to 1959. The new species was distinguished from similar species Nassarius （Zeuxis） bolangoi （Ladd, 1976） and Nassarius （Varicinassa） variciferus （A. Adams, 1852. in shell characteristics. Some relative discussion was provided. The new species mainly distributes in the subtidal zone of 30–53 m depth, in muddy and sandy bottom in the Bohai Sea and northern Huanghai Sea.

关键词： Gastropoda Nassariidae new species Bohai Sea Huanghai Sea

Benthic foraminifera and bottom water evolution in themiddle-southern Okinawa Trough during the last 18 ka

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Science china Earth sciences 2005年第6期48卷 805-814页

作者： LI Tiegang1, XIANG Rong1,2. SUN Rongtao1 & CAO Qiyuan1 1. institute of oceanology,{2., qingdao 266071, china 2. College of Geosciences, Ocean University of china, qingdao 2.6003, china Correspondence should be addressed to Li Tiegang institute of oceanology Chinese Academy of Sciences Qingdao China College of Geosciences Ocean University of China Qingdao China

A piston sediment core E017 from the middle-southern Okinawa Trough was investigated. A preliminary study of the deep-water evolution since 18 cal. ka BP was performed basedon the quantitative census data of benthic foraminiferal fauna, together with planktonic foraminiferal oxygen and carbon isotope, AMS14C dating, and the previous results achieved in thesouthern Okinawa Trough. The result shows that the benthic fauna was dominated by Buliminaaculeata (d′Orbigny), Uvigerina peregrina (Cushman), Hispid Uvigerina and Uvigerina dirupta(Todd) during the glaciation-deglaciation before 9.2.cal. ka BP, while Epistominella exigua(Brady), Pullenia bulloides (d′Orbigny), Cibicidoides hyalina (Hofker), Sphaeroidina bulloides(d’Orbigny) and Globocassidulina subglobosa (Brady) predominated the fauna in the post-glaciaperiod after 9.2.cal. ka BP. The benthic foraminifera accumulation rate (BFAR), paleoproductivityestimates and benthic foraminiferal assemblage conformably indicate that surface water paleoproductivity and organic matter flux during the glaciation-deglaciation were higher than those othe post-glacial period in the middle-southern Okinawa Trough, and gradually enhanced from thesouthern to the central Okinawa Trough during the glaciation-deglaciation, which could becaused by the discrepancy of the terrigenous nutrients supply. High abundances of E. exigua, anindicator of pulsed organic matter input, after 9.2.cal. ka BP may indicate that the intensity oseasonally riverine pulsed flux during the post-glacial period was stronger than that of the glaciation-deglaciation period, and the seasonal influx in the central trough might be stronger than inthe south. The temporal distributions of the typical species indicating bottom water oxygen content and ventilation condition show that the ventilation of the bottom water during the post-glaciaperiod is more active than the glaciation-deglaciation, which reflects that the evolution of the intermediate and deep waters of the n

关键词： benthic foraminifera, the Okinawa Trough, deep-water evolution.

Nonculturability of the pathogenic Vibrio parahaemolyticus in live culture of Grateloupia turuturu is associated with bacterial attachment to the algal thalli

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Acta Oceanologica Sinica 2010年第6期29卷 92-103页

作者： LIU Feng PANG Shaojun Marine Biological Culture Collection Centre Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China Graduate University of chinese academy of sciences Beijing 100049 China

The invasive red alga Grateloupia turuturu Yamada could turn Vibrio parahaemolyticus into nonculturable state in live algal *** order to elucidate the mechanism of such an effect,a series of culture experiments were performed in this investigation based on three hypothesized causes,namely bacterial attachment,production of reactive oxygen species （ROS） and the discharge of water soluble secondary metabolic *** results reveal that attachment to the thallus surface of *** was the major reason for the decrease of *** in *** investigations show that *** attachment to the surface of algal thallus in live cultures of seaweeds was a common ***,the disappearance of the culturability of *** occurred only on the thallus of *** over 72.h among all six algal species *** microscopic scanning shows that most of *** attached to *** changed from the initial normal bacilli to coccoid-shape after 72.*** enclosure experiments by enclosing the algal thallus in tubes demonstrate that the nonculturability of *** in the water of live culture of *** occurred after the physical contact of the *** to the *** capacity of *** in affecting the culturability of *** was not influenced after inhibition of photosynthesis by treatment of 3（3,4dichlorophenyl）-1 ,1dimethyl urea （DCMU） at non-lethal *** of reactive oxygen species after addition of live culture of bacteria was excluded by on-line analyzing the oxidation of dichlorohydrofluorescein （DCFH） to dichlorofluorescein （DCF） in the presence of peroxidase on a VersaFluor fluorometer.

关键词： Grateloupia turuturu attachment Vibrio parahaemolyticus nonculturability effective quantum yield

Dissolved inorganic carbon and CO_(2. fluxes across Jiaozhou Bay air-water interface

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Acta Oceanologica Sinica 2004年第2期23卷 279-285页

作者： LIXuegang LINing GAOXuelu SONGJinming instituteofoceanology ChineseAcademyofSciencesQingdao266071China GraduateSchool ChineseAcademyofSciencesBeijing100039China

On the basis of data collected in the Jiaozhou Bay in June and July 2.03, the DIC distribution in seawater is studied, and an average air-sea flux of CO2.is estimated. The results show that the content of DIC inside the bay is markedly higher than outside the bay in June, but the content of DIC outside the bay is markedly higher than inside the bay in July. The trend of DIC distribution inside the bay is similar, viz. the content is the maximum in the northeast, then decreases gradually toward the west, and the content is the minimum in the west. The total trend of vertical distribution is to increase gradually from surface to bottom. This characteristic of DIC distribution is determined by Jiaozhou Bay hydrology and there is a close relation between DIC and particulate N,P. Average CO2.lux across the air-sea interface is 0.55 mol/(m2.a) in June and 0.72.mol/(m2.a) in July. Jiaozhou Bay is considered as a net annual source for atmospheric CO2.in June and July, and the total CO2.flux from seawater into atmosphere is about 740t in June and 969 t in July.

关键词： DIC flux of CO_2 Jiaozhou Bay

THE EFFECTS OF MONSOONS AND CONNECTIVITY OF SOUTH china SEA ON THE SEASONAL VARIATIONS OF WATER EXCHANGE IN THE LUZON STRAIT

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Journal of Hydrodynamics 2009年第2期21卷 264-270页

作者： ZHAO Wei HOU Yi-jun QI Peng LE Ken-tang LI Ming-kui institute of oceanology Chinese Academy of Sciences Qingdao 266071 China Graduate University of the chinese academy of sciences Beijing 100039 China National Meteorological Center Beijing 100081 China

Seasonal variations of water exchange in the Luzon Strait are studied numerically using the improved Princeton Ocean Model （POM） with a consideration of the effects of connectivity of South china Sea （SCS） and monsoons. The numerical simulations are carried out with the strategy of variable grids, coarse grids for the Pacific basin and fine grids for the SCS. It is shown that the Mindoro Strait plays an important role in adjusting the water balance between the Pacific and the SCS. The SCS monsoon in summer seasons hinders the entrance of the Pacific water into the SCS through the Luzon Strait while the SCS monsoon in winter seasons promotes the entrance of Pacific water into the SCS through the Luzon Strait. However, the SCS monsoon does not affect the annual mean Luzon Strait transport, as is mainly determined by the Pacific basin wind.

关键词： numerical experiment Kuroshio Luzon Strait transport seasonal variation

Low-frequency variability of the North Equatorial Current bifurcation in the past 40 years from SODA

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Acta Oceanologica Sinica 2011年第3期30卷 14-19页

作者： MENG Qingji WANG Fan LIU Na Key Laboratory of Ocean Circulation and Waves （KLOCAW） Chinese Academy of Sciences Qingdao 266071 China Graduate School of chinese academy of sciences Beijing 100039 China National Marine Environmental Forecasting Center Beijing 100081 China

The low-frequency variability of the North Equatorial Current （NEC） bifurcation during 1958 to 2.01 was investigated with the Simple Ocean Data Assimilation （SODA） 2.0.2.dataset. In agreement with recent observations, the NEC bifurcation latitude （NBL） shifted northward as depth increases, from about 12.7°N near the surface to about 17.1°N at depths around 500 m for the annual average. This study reveals that the interannual variations of NBL, with five years period, mainly focused on the upper 500 m with amplitude increasing as depth increased. The NBL shifted southward in the past 40 years, which was more significant in the subsurface at more than -0.02./a. The NBL manifests itself in the transports of NMK （NEC-Mindanao Current （MC）-Kuroshio） system in strong relationship with MC （0.7） and Kuroshio （-0.7）. The EOF analysis of meridional velocity off the Philippine coast shows that the first mode, explaining 62. of variance and 5 years period, was highly correlated with the southward shift of NBL with coefficient at about 0.75. The southward shift of NBL consists with the weakening of MC and strengthening of Kuroshio, which exhibited linear trends at -0.2.Sv/a and 0.11Sv/a. Both interannual variation and trend of NBL were closely related to the variation of NMK system.

关键词： North Equatorial Current bifurcation latitude interannual variation linear trend NEC-Mindanao Current-Kuroshio system

The metallogenic epoch and ore-forming metal source of some large and superlarge deposits in Laojunshan, Yunnan——Evidence from Rb-Sr isotopic studies

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chinese Science Bulletin 1999年第S2期44卷 30-32页

作者： LIU Yuping~1, LI Chaoyang~1 and ZENG Zhigang~2.1. institute of Geochemistry, chinese academy of sciences, Guiyang 550002.{2. 2. institute of Oceanography, chinese academy of sciences, qingdao 266071,{2. institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China institute of Oceanography Chinese Academy of Sciences Qingdao 266071 China

THE Laojunshan metallogenic district located in southeastern Yunnan is an important tin polymetallic metallogenic district in china. The Dulong (tin-zinc polymetal, superlarge), Xinzhai (tin, large) andNanyangtian (scheelite, large) are the main deposits in this district. These deposits outcrop in the Lower-Middle Cambrian metamorphic series, and most orebodies that associated with skarns closely are stratoid,lenticular in occurrence and in accordance with the wall rocks. Distributed around the Laojunshan granite, the above-mentioned deposits were considered to be of magmatic-hydrothermal origin. But

关键词： Rb-Sr isotopes metallogenic epoch source Yunan.

The three-dimensional structure and seasonal variation of the North Pacific meridional overturning circulation

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Acta Oceanologica Sinica 2011年第3期30卷 33-42页

作者： LIU Hongwei ZHANG Qilong DUAN Yongliang HOU Yijun institute of oceanology Chinese Academy of Sciences Qingdao 266071 China Key Laboratory of Ocean Circulation and Waves （KLOCAW） Chinese Academy of Sciences Qingdao 266071 China The Graduate School of the chinese academy of sciences Beijing 100049 China

The three-dimensional structure and the seasonal variation of the North Pacific meridional overturning circulation （NPMOC） are analyzed based on the Simple Ocean Data Assimilation data and Argo profiling float data. The NPMOC displays a multi-cell structure with four cells in the North Pacific altogether. The TC and the STC are a strong clockwise meridional cell in the low latitude ocean and a weaker clockwise meridional cell between 7°N and 18°N, respectively, while the DTC and the subpolar cell are a weaker anticlockwise meridional cell between 3°N and 15°N and a weakest anticlockwise meridional cell between 35°N and 50°N, respectively. The DTC, the TC and the STC are all of very strong seasonal variations. As to the DTC, the southward transport is strongest in fall and weakest in spring. For the TC, the northward transport is strongest in winter and weakest in spring, while the southward transport is strongest in fall and weakest in spring, which is associated with the strong southward fiow of the DTC in fall. As the STC, the northward transport is strongest in winter and weakest in summer, while the southward transport is strongest in summer and weakest in spring. This seasonal difference may be associated with the DTC. The zonal wind stress and the east-west slope of sea level play important roles in the seasonal variations of the TC, the STC and the DTC.

关键词： North Pacific meridional overturning circulation three-dimensional structure seasonal variation