The spatial distribution of abundance and production of bacterioplankton in and near Chukchi Sea, Arctic Ocean
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摘要: 2012年夏季中国第5次北极科学考察期间,对北冰洋楚科奇海及其北部边缘海浮游细菌丰度和生产力进行了测定,并将其与环境因子进行了相关性分析。结果显示,楚科奇海浮游细菌丰度的变化范围为0.56×108~6.41×108 cells/dm3,平均为2.25×108 cells/dm3;细菌生产力介于0.042~1.92 mg/(m3·d)(以碳计)之间,平均为0.54 mg/(m3·d) (以碳计),与已有研究结果基本相当。陆架区细菌丰度和生产力要明显高于北部边缘区,但前者的单位细菌生产力则较低。与环境因子的相关性分析显示,细菌丰度与温度和叶绿素a浓度存在显著正相关(p<0.01),表明北极变暖导致的海水升温及浮游植物生物量的增加均会促进细菌的生长,从而进一步提高细菌在海洋生态系统和碳循环中的作用。但陆架区的细菌生产力与环境参数均没有显著相关性,表明其影响因素较为复杂;生产力在北部边缘区则仅与叶绿素a存在显著正相关(p<0.01),表明浮游植物生长过程产生的溶解有机碳(DOC)是细菌生长最为主要的碳源,碳源的单一可能制约细菌的生产从而导致该海域无冰状态下细菌丰度的增加不如预期,但融冰过程带来的大量DOC将促进细菌活性的增加。Abstract: The abundance and production of bacterioplankton with their correlations with environmental factors were investigated in the Chukchi Sea and its northern border areas in 2012 summer. The abundances of bacterioplankton in and near the Chukchi Sea range from 0.56×108 to 6.41×108 cells/dm3, with an average of 2.25×108 cells/dm3. Bacterial productions are between 0.042 mg/(m3·d) (in carbon) and 1.92 mg/(m3·d) (in carbon), with an average of 0.54 mg/(m3·d) (in carbon). These results are similar with previous studies in the Arctic Ocean. In the shelf region, the abundances and productions of bacteria are obviously higher than those in the northern border areas, but the specific bacterial production is lower. The environmental correlation analysis shows that bacterial abundance is positively correlation with temperature and Chl a concentration (p<0.01), indicating that both the increase of water temperature and phytoplankton biomass will enhance the growth of bacterioplankton in the Chukchi Sea which will further promote the role of bacteria in the marine ecosystem and carbon cycle. On the contrary, bacterial production has no correlation with environmental factors in the shelf region, but shows a significant positive correlation with Chl a in northern border area (p<0.01), suggesting that the growth of bacteria mainly depends on DOC released by phytoplankton in border area. The simplicity of carbon source may restrict the productivity of bacteria in the northern border area, and the DOC released from melting ice will stimulate the bacterial activity.
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Key words:
- bacterioplankton /
- bacterial production /
- Arctic /
- Chukchi Sea /
- environmental correlation
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Asahara Y,Takeuchi F,Nagashima K,et al. Provenance of terrigenous detritus of the surface sediments in the Bering and Chukchi Seas as derived from Sr and Nd isotopes: implications for recent climate change in the Arctic regions[J]. Deep-Sea Research Ⅱ: Topical Studies in Oceanography,2012,61/64: 155-171. 赵进平,史久新,金明明,等. 楚科奇海融冰过程中的海水结构研究[J]. 地球科学进展,2010,25(2): 154-162. Zhao Jinping,Shi Jiuxin,Jin Mingming,et al. Water mass structure of the Chukchi sea during ice melting period in the Summer of 1999[J]. Advances in Earth Science,2010,25(2): 154-162. Wang J,Hu H G,Goes J,et al. A modeling study of seasonal variations of sea ice and plankton in the Bering and Chukchi Seas during 2007-2008[J]. Journal of Geophysical Research: Oceans,2013,118(3): 1520-1533. 焦念志,骆庭伟,张瑶,等. 海洋微型生物碳泵——从微型生物生态过程到碳循环机制效应[J]. 厦门大学学报: 自然科学版,2011,50(2): 387-401. Jiao Nianzhi,Luo Tingwei,Zhang Yao,et al. Microbial carbon pump in the ocean-from microbial ecological process to carbon cycle mechanism[J]. Journal of Xiamen University: Natural Science,2011,50(2): 387-401. Vallières C,Retamal L,Ramlal P,et al. Bacterial production and microbial food web structure in a large arctic river and the coastal Arctic Ocean[J]. Journal of Marine Systems,2008,74(3/4): 756-773. Vézina A F,Demers S,Laurion I,et al. Carbon flows through the microbial food web of first-year ice in resolute passage (Canadian High Arctic)[J]. Journal of Marine Systems,1997,11(1/2): 173-189. Anderson M R,Rivkin R B. Seasonal patterns in grazing mortality of bacterioplankton in polar oceans: a bipolar comparison[J]. Aquatic Microbial Ecology,2001,25(2): 195-206. Wilkins D,Yau S,Williams T J,et al. Key microbial drivers in Antarctic aquatic environments[J]. FEMS Microbiology Reviews,2013,37(3): 303-335. 陈立奇,高众勇,杨绪林,等. 北极地区碳循环研究意义和展望[J]. 极地研究,2004,16(3): 171-180. Chen Liqi,Gao Zhongyong,Yang Xulin,et al. Prospects of research on carbon cycle in the arctic[J]. Chinese Journal of Polar Research,2004,16(3): 171-180. Arrigo K R,Perovich D K,Pickart R S,et al. Phytoplankton blooms beneath the sea ice in the Chukchi Sea[J]. Deep-Sea Research Ⅱ: Topical Studies in Oceanography,2014,105: 1-16. Steward G F,Smith D C,Azam F,et al. Abundance and production of bacteria and viruses in the Bering and Chukchi Seas[J]. Marine Ecology-Progress Series,1996,131(1/3): 287-300. Ortega-retuerta E,Fichot C G,Arrigo K R,et al. Response of marine bacterioplankton to a massive under-ice phytoplankton bloom in the Chukchi Sea (Western Arctic Ocean)[J]. Deep-Sea Research Ⅱ: Topical Studies in Oceanography,2014,105: 74-84. Grasshoff K,Ehrhardt M,Kremling K. Methods of Seawater Analysis[M]. Weinheim: Verlag Chemie Gmb H,1999: 177-187. Parsons T R,Maita Y,Lalli C M. A Manual of Chemical and Biological Methods for Seawater Analysis[M]. New York: Pergamon Press,1984. Sherr E B,Sherr B F,Wheeler P A,et al. Temporal and spatial variation in stocks of autotrophic and heterotrophic microbes in the upper water column of the central Arctic Ocean[J]. Deep-Sea Research Ⅰ,2003,50(5): 557-571. 林凌,何剑锋,张芳,等. 2008年夏季白令海和北冰洋异养浮游细菌丰度与分布特征[J]. 海洋学报,2011,33(2): 166-174. Lin Ling,He Jianfeng,Zhang Fang,et al. Heterotrophic bacterial abundance and distribution in the Bering Sea and the Arctic Ocean in the summer of 2008[J]. Haiyang Xuebao,2011,33(2): 166-174. 陈敏,黄奕普,郭劳动,等. 北冰洋: 生物生产力的"沙漠"?[J]. 科学通报,2002,47(9): 707-710. Chen Min,Huang Yipu,Guo Laodong,et al. Arctic Ocean: "desert" of biological production? [J]. Chinese Science Bulletin,2002,47(9): 707-710. Garneau M È,Roy S,Lovejoy C,et al. Seasonal dynamics of bacterial biomass and production in a coastal arctic ecosystem: franklin bay,western Canadian Arctic[J]. Journal of Geophysical Research: Oceans,2008,113(C7): C07S91. Malmstrom R R,Straza T R A,Cottrell M T,et al. Diversity,abundance,and biomass production of bacterial groups in the western Arctic Ocean[J]. Aquatic Microbial Ecology,2007,47(1): 45-55. Bsrsheim K 獙琮爠楂扡畣瑴楥潲湩?潬映?扲慯捤瑵散牴楩慯汮?慲扡畴湥摳愠湡据敤?慣湯摮?捥敮汴汲?獴灩敯据楳映楯捦?湯畲捧污敮楩捣?慣捡楲摢?据漠湡瑴攠湴瑨?椠湥?瑤栠敯?丠潴牨瑥栠敧慲獯瑷?偮慧挠楳晥楡捳?佮挠敩慮渠孴?嵥???敥敥灮?卡敮慤?剓敥獡敛慊牝挮栠????佴捩散愠湍潩杣牲慯灢桩楡捬?剅散獯敬慯牧捹栬′倰愰瀰攬爲猱?有〩???????????????有???扌牯?孨?づ崠?伬牂瑪敏杲慮?牥敮琠畐攠牋琬慇???剥敮捨桡敧???偈甬汥楴搠潡?瘮椠求污散湴慥???敬琠?慴污???确灧氠潳牴楯湣杫?瑡桮敤?牰敲汯慤瑵楣潴湩獯桮椠灡?扤攠瑴睨敥敩湲?慲捥瑬楡癴敩?扮愠捴瑯攠牰楨潹灴汯慰湬歡瑮潫湴?慮渠摩?瀠桴票瑥漠灓汯慵湴歨瑥潲湮?楏湣?瑡桮敛?卝漮甠瑄桥敥牰渭?佥捡攠慒湥孳?嵡???焠畡愺琠楔捯??楣捡牬漠打楴慵汤??捳漠汩潮朠祏??ちの?????????????????戯爲?嬺??崲??椳爴挰栮洼慢湲 ̄?′???潍瑯瑲爦攣氲氲‵??吠??潁瘠敇樬潇祡????告栠敍?獐瑥牤畲挦琣甲爴攳※潳昭?扬慩挦琣攲爴椳愻氠?挬潥浴洠畡湬椮琠楄敩獳?楯湬?瑥桤攠?睮敤猠瑰敡牲湴??牵捬瑡楴捥?佰捲敩慭湡?慹猠?牲敯癤敵慣汴敩摯?戠祡?灤礠牢潡獣整煥畲敩湡捬椠湰杲?潤晵???卯?爠剩乮??杦敦湳敨獯孲?崠???湡癲楣牴潩湣洠敷湡瑴慥汲??楤捵牲潩扮楧漠污潵杳祴??ぬㄠび??????????????ㄠ????扮牣?孵??嵥??漠桛慊湝??????坮桥愠瑅?慯牬敯?批愠捐瑲敯牧楲慥汳?猠灓敥捲楩敥獳?嬲?崰???渲渲町愠氲‵刭攳瘹椮攼睢?漾晛′?楝挠牋潩扲楣潨汭潡杮礠?㈠が??????′?????????扇爬?孵??嵬?卷愠汈愮??????牢物楡敬琠慧??????潩牮愠獴?????敬瑡?愠汯??呡桮敳?楲浯灬慥挠瑯?漠晴?業捰敥?浡整汵瑲楥渠条?潤渠?扯慴捥瑮整物楡潬瀠汩慭湰歡瑣潴渠?楦渠?瑬桩敭??牥挠瑣楨捡?佧捥敛慊湝嬮?嵎??偵潲汥愠牒??楩潥汷潳朠祍??ひ?ぢ????????‰???????????戱爭?嬵??崼?啲挾桛椲洴楝礠慎????痺殳甬擘感???丮椠獿栗榰渋漭?即?敥瑁?愥汻???漖敹玁?晊牝攮猠桷攋湦榥測朲‰漱昱?猳申爨昲愩挺攠?眵愭琹攵爮?敌湩栠慈湯据敧?桩敡瑮敧爬潃瑨牥潮瀠桊楩捡?灦牡潮歧愬片祡潯琠敓?灥牮潧摱畵捡瑮椬潥湴?楡湬?琠桎敵?睲敩獥瑮整牳渠??牲捩瑡楴捩???浯灦椠牴楨捥愠汐?散癩楦摩散渠捩敮?晬牯潷洠?瑮栠整??愠湷慥摳慴??慮猠楁湲?摴畩牣椠湏杣?卡敮灛瑊敝洮戠效牡??ちの?嬠?嵵???潯甬爲渰愱氱?漳昳?伲挩攺愠游漵札爹愵瀮格祢?资せ??????????????????sell D A,Bates N R. Strong hydrographic controls on spatial and seasonal variability of dissolved organic carbon in the Chukchi Sea[J]. Deep-Sea Research Ⅱ: Topical Studies in Oceanography,2005,52(24/26): 3245-3258. Amado A M,Farjalla V F,Esteves F D A,et al. Complementary pathways of dissolved organic carbon removal pathways in clear-water Amazonian ecosystems: photochemical degradation and bacterial uptake[J]. FEMS Microbiology Ecology,2006,56(1): 8-17. Pearce I,Davidson A T,Bell E M,et al. Seasonal changes in the concentration and metabolic activity of bacteria and viruses at an Antarctic coastal site[J]. Aquatic Microbial Ecology,2007,47(1): 11-23. Jellett J F,Li W K W,Dickie P M,et al. Metabolic activity of bacterioplankton communities assessed by flow cytometry and single carbon substrate utilization[J]. Marine Ecology Progress Series,1996,136: 213-225. Sherr E B,Sherr B F,Longnecker K,et al. Di
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