楚科奇海附近表层沉积物中类脂生物标志物的分布特征和意义
The distribution of lipids biomarkers in the surface sediments of the Chukchi Sea and their implications
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摘要: 多参数生物标记物法已被广泛用于重建浮游植物生产力和种群结构,研究了2003年夏季我国二次北极考察时采集的楚科奇海表层沉积物样品中浮游植物生物标志物的比例变化及其作为浮游植物种群结构替代指标的潜力。观测海区表层沉积物中菜子甾醇、甲藻甾醇、长链烯酮的总含量为20~3149 ng/g,平均值为1 010 ng/g,生物标志物总量分布表明南部的楚科奇陆架海域生产力明显高于北部海台区,不同站位的菜子甾醇和甲藻甾醇相对比例有明显变化,但都显示菜子甾醇占优势,楚科奇海陆架的站位中都是硅藻为主,菜子甾醇占生物标志物总量的比例为42%~74%,甲藻甾醇占生物标志物总量的比例为17%~37%,在海台区仍然是硅藻占优势,但是甲藻和颗石藻的比例有了很大的提高,加拿大海盆的4个站位中以甲藻和颗石藻为主,硅藻并非加拿大海盆的优势种群。这与用显微镜下鉴定得到的硅藻和甲藻分布趋势相似。研究结果为生物标志物作为浮游植物种群结果替代指标并为利用柱状样中的生物标志物研究古生态提供现代依据。Abstract: Multi-biomarkers have been applied for the reconstruction of phytoplankton productivity and community structure. This study reports phytoplankton biomarker ratios in surface sediments sampled during the second China arctic expedition from the western Chukchi Sea in the summer of 2003 and evaluates their potential as community structure proxies. The total biomarkers(sum of brassicasterol, dinosterol, alkenones) in the surveyed area were 20~3 149 ng/g, the average value was 1 010 ng/g.The distributions of biomarkers also indicate the primary productivity in the Chukchi shelf was higher than the Chukchi plateau. The brassicasterol to dinosterol ratios for different stations have an obvious diversification, but all stations show the brassicasterol is in the ascendant. At the station of the Chukchi shelf, diatom is the mainly phytoplankton, the brassicasterol accounts for 42% to 74% of the total biomarkers, and the proportion of dinosterol is 17% to 37% in the total biomarkers. On the plateau, the dominant phytoplankton is also diatom, but the ratio of dinosterol and coccolithophore has a significantly.In the Canada Basin, dinosterol and coccolithophore are the dominant phytoplankton,diatom is not the predminant population and this result is in accord with phytoplankton distribution patterns obtained by other methods such as microscope.An important modern basis that these biomarkers can be used as proxies for community structure is prcvided, and it also suggests that this method can be used for community structure reconstruction for the sediment cores.
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Key words:
- biomarkers /
- surface sediments /
- Chukchi Sea /
- phytoplankton community structure
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ARCHER D, WINGUTH A,LEA D,et al. What caused the glacial/interglacial atmosperic pCO2 cycles? [J]Review of Geophysics,2000,38(2):159—189. MARTIN J H, COALE K, JOHNSON K, et al.Testing the iron hypothesis in ecosystems of the equatorial Pacific Ocean [J].Nature,1994,371:123—129. BOYD P W, WATSON A J,LAW C S,et al.A mesoscale phytoplankton bloom in the polar Southern Ocean stimulated by iron fertilization[J].Nature,2000,407:695—702. TSUDA A,TAKEDA S,SAITO H,et al.A mesoscale iron enrichment in the western subarctic Pacific induces large centric diatom bloom[J].Science,2003,300:958—961. HARRISON K G. Role of increased marine silica input on paleo-pCO2 levels[J].Pale oceanography,2000,15(3):292—298. KALTIN S, ANDERSON L G.Uptake of atmospheric carbon dioxide in Arctic shelf seas; Evaluation of the relative importance of processes that influence PCO2 in water transported over the Bering-Chukchi Sea shelf[J].Marine Chemistry,2005,94:67—79. GONI M A, YUNKER M B, MACDONALD R W, et al. Distribution and sources of organic biomarkers in arctic sediments from Mackenzie River and Beaufort shelf [J].Marine Chemistry,2000,71:23—51. BELICKA L L, MACDONALD R W,HARVEY H R. Sources and transport of organic carbon to shelf, slope and basin surface sediments of the Arctic Ocean [J].Deep-Sea Research:Ⅰ , 2002, 49: 1463—1483. VOLKMAN J K, BARRETT S M, BLACKBURN S I, et al. Microalgal biomarkers: a review of recent research developments[J].Organic Geochemistry,1998,29:1163—1179. CALVO E, PELEJERO C, LOGAN G A, et al. Dust-induced changes in phytoplankton composition in the Tasman Sea during the last four glacial cycles [J].Paleoceanography,2004,19:2020. SCHUBERT C J, VILLANUEVA J, CALVERT S E, et al. Stable phytoplankton community structure in the Arabian Sea over the past 200,000 years [J].Nature,1998,394(6693):563—566. 陈建芳,金海燕,刘小涯,等. 黄海和东海沉积物有机质活性及营养盐再生潜力初探[J].地球化学,2005,24(4):387—394. 高爱国,陈志华,刘炎光,等.楚科奇海表层沉积物稀土元素的地球化学特征[J].中国科学(D辑),2003,33(2):148—154. 王汝建,肖文申,向霏,等.北冰洋西部表层沉积物中生源组分及其古海洋学意义[J].海洋地质与第四纪地质,2007(6):61—67. LI H L, CHEN J F, LIU Z L, et al. Size structure of particulate biogenic silica in the Chukchi Sea and the southern Canada basin[J].Advances in Nature Science, 2007,1:72—78. WERNE J P,HOLLANDER D J,LYONS T W,et al .Climate-induced variations in productivity and planktonic ecosystem structure from the Younger Dryas to Holocene in the Cariaco Basin,Venezuela[J].Paleoceanography,2000,15(1)19—29. 刘子琳,陈建芳,张涛,等.楚科奇海及其海台区粒度分级叶绿素a和初级生产力[J].生态学报,2007,27 (12):4953—4962. COACHMANN L K,AAGAARD K. Transport through Bering Strait: annual and inter-annual variability[J].J Geophys Res,1988,93:15535—15539. HANSELL D A, WHITLEDGE T E,GOERING J J. Patterns of nitrate utilization and new production over the Bering-Chukchi shelf. Cont [J].Shelf Res,1993,13(5/6):601—627. SHI J X, ZHAO J P,JIAO Y T, et al. Pacific inflow and its links with abnormal variations in the Arctic Ocean[J].Chinese Journal of Polar Research,2004,16(3):253—260. ZHAO J P, ZHU D Y, SHI J X. Seasonal variations in sea ice and its main driving factors in the Chukchi Sea[J].Advances in Marine Science,2003, 21(2):123—131. SPRINGER A M, McROY C P, FLINT M V. The paradox of pelagic food webs in the northern Bering Sea:Ⅲ.Patterns of primary production[J].Cont Shelf Res,1993, 13(5/6):575—599. 杨清良,林更铭,林茂.楚科奇海和白令海浮游植物的种类组成与分布[J].极地研究,2002,14 (2):113—1251. SAKSHAUG E. Primary and secondary production in the Arctic Seas[M]//STEIN R,MACDONALD R.The Organic Carbon Cycle in the Arctic Ocean.Berlin,Springer,2004:57—81. 张占海.中国第二次北极科学考察报告 .北京:海洋出版社,2004. National Ice Center.2001 .Http://www.natice.Noaa.gov/pub/west-arctic/ Bering-Sea/ Bering-Sea-West/2003. . RIEBESELL U,SCHLOSS I,SMETACEK V. Aggregation of algae release from melting sea ice:Implications for seeding and sedimentation[J].Polar Biol,1991(11):239—248. LEGENDRE L,ACKLEY S F,DIECKMANN G S,et al . Ecology of sea ice biota.Global significance [J].Polar Biol,1992,(12):429—444. ZHAO M X,DUPONT L, EGLINTON G, Teece E.n-alkane and pollen reconstruction of terrestrial clemate and vegetation for N.W.Africa over the last 160 kyr[J].Organic Geochemistry,2003,34(1):131—143. EGLINTON G, HAMILTON R J. Leaf epicuticular waxes[J].Science,1967,156(3780):1322—1335. NAIDU A S, SCALAN R S, FEDER H M.Stable organic carbon isotopes in sediments of the north Bering south Chukchi Seas , Alaskan-Soviet Arctic Shelf [J].Continental Shelf Research,1993,13:669—691. NAIDU A S,COOPER L W, FINNEYB P,et al.Organic carbon isotope ratios (δ13C) of Arctic Amerasian continental shelf sediments[J].International Journal of Earth Sciences,2000,89:522—532. 陈志华,石学法,蔡德陵,等.北冰洋西部沉积物有机碳、氮同位素特征及其环境指示意义[J].海洋学报,2006, 28(6):61—71. 李宏亮,陈建芳,金海燕,等.楚科奇海表层沉积物的生源组分及其对碳埋藏的指示意义[J].海洋学报,2008,30(1):165—171. RACHOLD V, GRIGORIEV M N, ARE F E.Coastal erosion vs riverine sediment discharge in the Arctic shelf seas[J].International Journal of Earth Science,2009,89(3):450—460. PRAHL F G, COLLIER R B, DYMOND J, et al. A biomarker perspective on prymnesiophyte productivity in the northeast Pacific Ocean[J].Deep-Sea Res Part:Ⅰ , 1993, 40(10):2061—2076. VOLKMAN J K, BARRETT S M, BLACKBURN S I, et al. Microalgal biomarkers; a review of recent research developments[J].Org Geochem, 1998,29: 1163—1179. SCHUBERT C J,VILLANUEVA J, CALVERT S E, et al. Stable phytoplankton community structure in the Arabian Sea over the past 200000 years [J].Nature,1998, 394(6693): 563—566. SEKI O, IKEHARA M, KAWAMURA K, et al.Reconstruction of paleo productivity in the Sea of Okhotsk over the last 30 kyr[J].Paleoceanography,2004,19(1):1016,doi: 10.1029/2002PA000808. WERNE J P, HOLLANDER D J, LYONS T W, et al. Climate-induced variations in productivity and planktonic ecosystem structure from the Younger Dryas to Holocene in the Cariaco Basin, Venezuela [J].Paleoceanography,2000,15(1): 19—29. VERSTEEGH G J M, ZONNEVELD K A F. Use of selective degradation to separate preservation from productivity[J].Geology,2002,30 (7):615—618. 陈荣华,孟翊,华棣,等.楚科奇海与白令海表层沉积物中的钙质和硅质微体化石研究[J].海洋地质与第四纪地质,2001,21(4):25—301. RAMSFJELL E.Phytoplankton distribution in the Norwegian Sea in June,1952 and 1953,Fisk.Dir.Skr.Ser[J].Havunders,1960,12:1—12. FALKOWSKI P G, OLIVER M J. Mix and match: How climate selects phytoplankton [J].Nat Rev Microbiol, 2007, 5(10): 813—819. 李宏亮,陈建芳,刘子琳,等.北极楚科奇海和加拿大海盆南部颗粒生物硅的粒级结构[J].自然科学进展,2007,17 (1):72—781. BOOTH B C, HORNER R A. Microalgac on the Arctic Ocean section, 1994: Species abundance and biomass[J].Deep-Sea Research,1997,44(8):1607—1622.
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