Journal of Tropical Oceanography >
Distribution of transparent exopolymer particles in the Pearl River Estuary in summer
Received date: 2009-11-19
Revised date: 2010-04-01
Online published: 2011-10-10
Supported by
中国科学院知识创新工程重要方向性项目(KZCX2-YW-Q07-02); 中科院南海海洋研究所知识创新工程领域前沿项目(LYQ200701)
We investigate the spatial distributions of transparent exopolymer particles (TEP) in the Pearl River Estuary in summer by analyzing the TEP concentration and size-fractions of Chl a. TEP concentration (calculated by the amount of xan-than; the same below) ranged from 85.0μg•L?1 to 1234.9μg•L?1, with an average of 690.9μg•L?1. The averaged TEP concentra-tions in the surface layer and bottom layer were 562.3μg•L?1 and 778.2μg•L?1, respectively, and for most stations lower con-centration of TEP was found in the surface layer as compared to the bottom layer. In the surface layer, TEP increased from the up stream to down stream, and decreased gradually towards the open sea and towards the east and west in the estuary. In the bottom layer, the maximum TEP was observed in the S3 near Humen. The correlation between TEP and Chl a suggests that the excretion of naon-phytoplankton (3-20µm) may contribute more to TEP than other size phytoplankton. The ratio of TEP/(Chl a) shows positive correlation with salinity but negative correlation with nutrition (NO3—N, NH4—N, SiO3—Si and total phos-phorus).
SUN Cui-ci,WANG You-shao,WU Mei-lin,LI Nan,LIN Li,SONG Hui,WANG . Distribution of transparent exopolymer particles in the Pearl River Estuary in summer[J]. Journal of Tropical Oceanography, 2010 , 29(5) : 81 -87 . DOI: 10.11978/j.issn.1009-5470.2010.05.081
[1] 孙军. 海洋中的凝集网与透明胞外聚合颗粒物[J]. 生态学报, 2005, 25(5): 1191-1198.
[2] PASSOW U. Transparent exopolymer particles (TEP) in aquaticenvironments[J]. Progress in Oceanography, 2002, 55: 287-333.
[3] MICHAEL P M, WARD J E, BRUCE A M, et al. Production of transparent exopolymer particles (TEP) by the eastern oyster Crassostrea virginica[J]. Marine Ecology Progress Series, 2005, 288: 141-149.
[4] ALLDREDGE A L, PASSOW U,
[5] MARI X, KIORBOE T. Abundance, size distribution and bacterial colonization of transparent exopolymer particles (TEP)[J]. Journal of Plankton Research, 1993, 18: 969-986.
[6] TRANVIK L J, SHERR E B. Uptake and utilization of 'Colloidal DOM' by heterotrophic flagellates in seawater[J]. Marine Ecology Progress Series, 1993, 92: 301-309.
[7] PRIETO L, SOMMER F, STIBOR H, et al. Effects of planktonic copepods on transparent exopolymer particles (TEP) abundance and size spectra[J]. Journal of Plankton Research, 2001, 23: 515-525.
[8] FLOOD P, DEIBEL D, MORRIS C. Filtration of colloidal melanin from sea water by planktonic tunicates[J]. Nature, 1992, 355: 630-632.
[9] DILLING L, WILSON J, STEINBERG D, et al. Feeding by the euphausiid Euphausia pacifica and the Cpepod(Clanus pacifcus) on marine snow[J]. Marine Ecology Progress Series, 1998, 170: 189-201.
[10] ENGEL A. Direct relationship between CO2 uptake and transparent exopolymer particles production in natural phytoplankton[J]. Journal of Plankton Research, 2002, 24: 49-54.
[11] HARLAY J, CAROLINE D B, ENGEL A, et al. Abundance and size distribution of transparent exopolymer particles (TEP) in a coccolithophorid bloom in the northern Bay of Biscay[J]. Deep-Sea Research I, 2009, 56: 1251-1265.
[12] QUIGLEY M S, SANTSCHI P H, HUNG C C, et al. Importance of acid polysaccharides for 234Thcomplexation to marine organic matter[J]. Limnology and Oceanography, 2002, 47: 367-377.
[13] 彭安国, 黄奕普. 九龙江河口区TEP及其与铀、钍、钋同位素相关性的研究[J]. 厦门大学学报: 自然科学版, 2007, 46(1): 38-42.
[14] CHEN C T A, TSUNOGAI S. Carbon and nutrients in the ocean[M]//GALLOWAY J N, MELILLO J J. Asian change in the context of global climate change. Cambridge: Cambridge Univ Press, 1998: 271-307.
[15] ZHAI W, DAI M H, CAI W J, et al. High partial pressure of CO2 and its maintaining mechanism in a subtropical estuary: the Pearl River estuary, China[J]. Marine Chemistry, 2005, 93(1): 21-32.
[16] GUO X H, CAI W J, ZHAI W D, et al. Seasonal variations in the inorganic carbon system in the Pearl River (Zhujiang) estuary[J]. Continental Shelf Research, 2008, 28: 1424-1434.
[17] CAI W J, DAI M H. Comment on “Enhanced open ocean storage of CO2 from shelf area pumping ” by Thomas et al. (Science 304) [J]. Science, 2004, 306: 1477.
[18] DAI M H, MARTIN J M, HONG H S, et al. Preliminary study on the dissolved and colloidal organic carbon in the Zhujiang River estuary[J]. Chinese Journal of Oceanology and Limnology, 2000, 18: 265-273.
[19] 韩舞鹰. 南海海洋化学[M]. 北京: 科学出版社, 1998.
[20] PASSOW U, ALLDREDGE A L. A dye-binding assay for the spectrophotometric measurement of transparent exopolymerparticles (TEP)[J]. Limnology and Oceanography, 1995, 40, 1326-1335.
[21] 国家海洋局. 海洋调查规范[S]. 北京: 中国标准出版社, 2007.
[22] ENGEL A. Distribution of transparent exopolymer particles (TEP) in the northeast Atlantic Ocean and their potential significance for aggregation processes[J]. Deep-Sea Research I, 2004, 51: 83-92.
[23] RAMAIAH N, YOSHIKAWA T, FURUYA K. Temporal variations in transparent exopolymer particles (TEP) associated with a diatom spring bloom in a subarctic ria in Japan[J]. Marine Ecology Progress Series, 2001, 212: 79-88.
[24] WETZ M S, ROBBINS M C, PAERL H W. Transparent exopolymer particles (TEP) in a river-dominated estuary: spatial–temporal distributions and an assessment of controls upon TEP formation[J]. Estuaries and Coasts, 2009, 32: 447-455.
[25] PRIETO L, NAVARRO G, CóZAR A, et al. Distribution of TEP in the euphotic and upper mesopelagic zones of the southern Iberian coasts[J]. Deep Sea Research Part II: Topical Studies in Oceanography, 2006, 53(11/13): 1314-1328.
[26] RIEBESELL U, REIGSTAD M, WASSMANN P, et al. On the trophic fate of Phaeocystis-derived mucus for vertical flux[J]. Netherlands Journal of Sea Research, 1995, 33: 193-203.
[27] KIØBOE T, HANSEN J L S, ALLDREDGE A L, et al. Sedimentation of phytoplankton during a diatom bloom: rates and mechanisms[J]. Journal of Marine Research, 1996, 54: 1123-1148.
[28] HONG Y, SMITH W O, WHITE A M. Studies on transparent exopolymeric particles (TEP) produced in the Ross Sea (Antarctica) and by Phaeocystis antartica (Prymnesiophyceae)[J]. Journal of Phycology, 1997, 33: 368-376.
[29] JÄHMLICH S, THOMSON L, GRASF G. Factors controlling aggregate formation in the benthic boundary layer of the Mecklanburg Bight (Western Baltic Sea)[J]. Journal of Sea Research, 1998, 41: 245-254.
[30] ENGEL A, MEYERHÖFER MV, BRÖCKEL K. Chemical andbiological composition of suspended particles and aggregates in the Baltic Sea in summer (1999)[J]. Estuarine, Coastal and Shelf Sciences, 2002, 55: 729-741.
[31] GARCíA C M, PRIETO L, VARGAS M, et al. Hydrodynamics and the spatial distribution of plankton and TEP in the Gulf of Cádiz (SW Iberian Peninsula)[J]. Journal of Plankton, 2002, 24: 817-833.
[32] 李开枝, 黄良民, 张建林, 等. 珠江河口咸潮期间浮游植物的群落特征[J]. 热带海洋学报, 2010, 29 (1): 62-68.
[33] SCHUSTER S, HERNDL G J. Formation and significance of transparent exopolymeric particles in the Northern Adriatic Sea[J]. Marine Ecology Progress Series, 1995, 124: 227-236.
[34] BEAUVAIS S, PEDROTTI M L, EGGE J, et al. Effects of turbulence on TEP dynamics under contrasting nutrient conditions: implications for aggregation and sedimentation processes[J]. Marine Ecology Progress Series, 2006, 323: 47-57.
[35] 应秩甫. 珠江口伶仃洋锋的类别及其对沉积的影响[J]. 热带海洋. 1994, 13(2): 25-32.
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