THE DISTRIBUTION AND CONTENT OF PARTICULATE BIOGENIC SILICA IN SURFACE WATERS OF PRYDZ BAY,SOUTHERN OCEAN, DURING THE AUSTRAL SUMMER OF 2011

doi:10.3724/SP.J.1084.2012.00247

Abstract

Abstract: To characterize the correlation among PBSi and plankton, nutrients and POC, the contents and distributions of PBSi in the upper surface waters of Prydz Bay, Southern Ocean, were investigated during the CHINARE-27 cruises. Results show that the contents of PBSi ranged between 0.76—19.72 μmol/dm³, the average content of PBSi was 6.06 μmol/dm³, and the distribution of surface PBSi had significant regional characteristics. The concentrations were higher in the southern area of 67°S than in the northern area. The distribution of PBSi and Chl a and POC show similar patterns, and PBSi had a negative correlation with silicate. In the vertical direction, the mole ratio of Si/C decreased with increasing depth. This trend indicated a higher rate of PBSi dissolution, or lower rate of organic matter remineralization rate in the upper 200 m.

Key words: PBSi, particle, phytoplankton, POC, Prydz Bay

Hu Chuanyu，Han Zhengbing，Shen Chen，Zhang Haisheng. THE DISTRIBUTION AND CONTENT OF PARTICULATE BIOGENIC SILICA IN SURFACE WATERS OF PRYDZ BAY,SOUTHERN OCEAN, DURING THE AUSTRAL SUMMER OF 2011[J]. ADVANCES IN POLAR SCIENCE, 2012, 24(3): 247-253.

References

[1]Tréguer P, Pondaven P. Global change.nullSilica control of carbon dioxide[J].. Nature,2000,406:358-359

[2]Tréguer P. Silica and the cycle of carbon in the ocean [J]. C. R.[J].Geoscience,2002,334:3-

[3]Ragueneau O, Dittert N, Pondaven P, et al., Si/C decoupling in the world ocean: is the Southern Ocean different?[J].Deep-Sea Research II,2002,49:3127-3154

[4]DeMaster D J. .The accumulation and cycling of biogenic silica in the Southern Ocean: revisiting the marine silica budget. [J].Deep Sea Research Part II,2002,49(16):31-55

[5]Sarmiento J, Lequere C.Oceanic carbon dioxide uptake in a model of century-scale global warming[J].Science,1996,274:1346-1350

[6]Ragueneau O, Tréguer P, Leynaert A, et al. .A review of the Si cycle in the modern ocean[J].Recent Progress and missing gaps in the application of biogenic opal as a paleoproductivity Proxy. Global and Planetary Change,2000,26:317-365

[7]Nelson D M, Tréguer P, Brzezinski M A, et al.Production and dissolution of biogenic silica in the ocean: Revised global estimates, comparison with regional data and relationship to biogenic sedimentation[J].Global Biogeochem.Cycle,1995,9:359-372

[8]Leblanc K, Queguiner B, Fiala M, et al.null Particulate biogenic silica and carbon production rates and particulate matter distribution in the Indian sector of the subantarctic ocean[J].Deep Sea Research:II,2002,49:3189-

[9]Tréguer P，Nelson D M, Brzezinski M A. et al.,.Protocol for determination of biogenic and lithogenic silica in particulate matter.[J].SO-JGOFS core parameter, int. Rep,1992,:-

[10]Benedicte P，Mathieu M, Neale J et al.，.Distribution of particulate organic matter (POM) in the Southern Oceanduring BROKE-West (30°E-80°E).[J].Deep-Sea Research II,2010,57 :779-793

[11]Nelson D M, Brzezinski M A. Kinetics of silicic acid uptake by natural diatom assemblages in two Gulf Stream warm-core rings.[J].Marine Ecology-Progress Series,1990,62:283-

[12]Leynaert A, Tréguer P, Queguiner B. et al. .The distribution of biogenic silica and the composition of particulate organic matter in the Weddle-Scotia Sea during spring 1988 [J].[J].Mar.Chem,1991,35:435-447

[13]Nelson D.M, Gordon L L. Production and Pelagic dissolution of biogenic silica in the Southern Ocean.[J].Geochimica et Cosmochimica Acta,1982,46:491-

[14]Nelson D M, Ahern J A, Herlihy L J. Cycling of biogenic silica within the upper water column of the Ross Sea.[J].Marine Chemistry,1991,35:461-

[15]Tréguer P, Nelson D M, Van Bennekom A J, et al.. The silica balance in the world ocean.[J].A reestimate. Science,1995,268:375-379

[16]Nelson D M, Brzezinski M A. Diatom growth and Productivity in an oligotrophic mid-ocean gyre.[J].A 3-yr record from the Sargasso Sea near Bermuda. Limnology and oceanography,1997,42(3):473-486

[17]朱根海，宁修仁，陈忠元，等.1991/1992年夏季南极普里兹湾邻近海域网采浮游植物的聚类分析[J].南极研究,1995,7(2):38-44

[18]孙军，刘东艳，宁修仁，等.2001/2002年夏季南极普里兹湾及其邻近海域的浮游植物[J].海洋与湖沼,2003,34(5):519-532

[19]Nelson D M, Anderson R F, Barber R T.Vertical budgets for organic carbon and biogenic silica in the Pacifica sector of the Southern Ocean, 1996-1998[J].Deep-Sea Research II,2002,49:1645-1673

[20]Umani S F, Accornero A, Budillon G.Particulate matter and plankton dynamics in the Ross Sea Polynya of Terra Nova Bay during the Austral Summer 1997/1998[J].Journal of Marine Systems,2002,36:29-49

[21]于洪华, 苏纪兰, 苗育田.南极普里兹湾及其邻近海域的水文结构特征和底层水的来源[J].海洋学报,1998,20(1):11-20

[22]刘子琳，蔡昱明，宁修仁，等，.1999/2000年夏季南极普里兹湾及湾口区叶绿素a和初级生产力[J].极地研究,2001,13(1):1-12

[23]刘诚刚，宁修仁，孙军，等，.2002年夏季南极普里兹湾及其邻近海域浮游植物现存量、初级生产力粒级结构和新生产力研究[J].海洋学报,2004,:-

[24]Brzezinski M A.The Si：C：N ratio of marine diatoms：interspecific variability and the effect of some environmental variables[J].Journal of Phycology,1985,21:347-

[25]扈传昱，潘建明，张海生等，.南极普里兹湾外海沉降颗粒物通量、组成变化及其与罗斯海对比研究，[J].海洋学报49-55,2006，,28(（5）):49-55