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World's Largest Macroalgal Blooms Altered Phytoplankton Biomass in Summer in the Yellow Sea: Satellite Observations
Xing, QG; Hu, CM; Tang, DL; Tian, LQ; Tang, SL; Wang, XH; Lou, MJ; Gao, XL; Xing, QG (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, 17 Chunhui Rd, Laishan Dist 264003, Yantai, Peoples R China. qgxing@yic.ac.cn; huc@usf.edu; lingzis@scsio.ac.cn; tianliqiao@whu.edu.cn; sltang2009@gmail.com; x.wang@adfa.edu.au; mjlou@yic.ac.cn; xlgao@yic.ac.cn
2015-09-01
发表期刊REMOTE SENSING
ISSN2072-4292
卷号7期号:9页码:12297-12313
产权排序[Xing, Qianguo; Lou, Mingjing; Gao, Xuelu] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Laishan Dist 264003, Yantai, Peoples R China; [Xing, Qianguo; Wang, Xiao Hua] Univ New S Wales, Australian Def Force Acad, Sch Phys Environm & Math Sci, Sino Australian Res Ctr Coastal Management, Canberra, ACT 2600, Australia; [Hu, Chuanmin] Univ S Florida, Coll Marine Sci, St Petersburg, FL 33701 USA; [Tang, Danling; Tang, Shilin] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [Tian, Liqiao] Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan 430079, Peoples R China
摘要Since 2008, the world's largest blooms of the green macroalgae, Ulva prolifera, have occurred every summer in the Yellow Sea, posing the question of whether these macroalgal blooms (MABs) have changed the phytoplankton biomass due to their perturbations of nutrient dynamics. We have attempted to address this question using long-term Moderate Resolution Imaging Spectroradiometer (MODIS) observations. A new MODIS monthly time-series of chlorophyll-a concentrations (Chl-a, an index of phytoplankton biomass) was generated after removing the macroalgae-contaminated pixels that were characterized by unexpectedly high values in the daily Chl-a products. Compared with Chl-a during July of 2002-2006 (the pre-MAB period), Chl-a during July of 2008-2012 (the MAB period) exhibited significant increases in the offshore Yellow Sea waters (rich in macroalgae), with mean Chl-a increased by 98% from 0.64 mu g/L to 1.26 mu g/L in the study region. In contrast, no significant Chl-a changes were observed during June between the two periods. After analyzing sea surface temperature, photosynthetically available radiation, and nutrient availability, we speculate that the observed Chl-a changes are due to nutrient competition between macroalgae and phytoplankton: during the MAB period, the fast-growing macroalgae would uptake the increased nutrients from the origin of Jiangsu Shoal; thus, the nutrients available to phytoplankton were reduced, leading to no apparent increases in biomass in the offshore Yellow Sea in June.; Since 2008, the world's largest blooms of the green macroalgae, Ulva prolifera, have occurred every summer in the Yellow Sea, posing the question of whether these macroalgal blooms (MABs) have changed the phytoplankton biomass due to their perturbations of nutrient dynamics. We have attempted to address this question using long-term Moderate Resolution Imaging Spectroradiometer (MODIS) observations. A new MODIS monthly time-series of chlorophyll-a concentrations (Chl-a, an index of phytoplankton biomass) was generated after removing the macroalgae-contaminated pixels that were characterized by unexpectedly high values in the daily Chl-a products. Compared with Chl-a during July of 2002-2006 (the pre-MAB period), Chl-a during July of 2008-2012 (the MAB period) exhibited significant increases in the offshore Yellow Sea waters (rich in macroalgae), with mean Chl-a increased by 98% from 0.64 mu g/L to 1.26 mu g/L in the study region. In contrast, no significant Chl-a changes were observed during June between the two periods. After analyzing sea surface temperature, photosynthetically available radiation, and nutrient availability, we speculate that the observed Chl-a changes are due to nutrient competition between macroalgae and phytoplankton: during the MAB period, the fast-growing macroalgae would uptake the increased nutrients from the origin of Jiangsu Shoal; thus, the nutrients available to phytoplankton were reduced, leading to no apparent increases in biomass in the offshore Yellow Sea in June.
关键词Macroalgal Blooms Ulva Prolifera Phytoplankton Nutrient Competition Chlorophyll-a Ocean Color Modis Yellow Sea
作者部门海岸带信息集成与综合管理实验室
DOI10.3390/rs70912297
项目资助者Chinese Academy of Sciences(XDA11020403 ; CAS/SAFEA International Partnership Program for Creative Research Teams ; INTER-GOVERNMENTAL S&T COOPERATION (China-Romania) ; University of South Florida ; XDA11020102 ; KZCX2-YW-Q07-01)
收录类别SCI
关键词[WOS]EAST CHINA SEA ; COASTAL WATERS ; GREEN TIDE ; CHLOROPHYLL-A ; ALGAL BLOOMS ; BOHAI SEA ; COMPETITION ; CALIFORNIA ; BAY
文章类型Article
语种英语
WOS研究方向Remote Sensing
WOS记录号WOS:000362511400061
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/9533
专题海岸带信息集成与综合管理实验室
通讯作者Xing, QG (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, 17 Chunhui Rd, Laishan Dist 264003, Yantai, Peoples R China. qgxing@yic.ac.cn; huc@usf.edu; lingzis@scsio.ac.cn; tianliqiao@whu.edu.cn; sltang2009@gmail.com; x.wang@adfa.edu.au; mjlou@yic.ac.cn; xlgao@yic.ac.cn
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Xing, QG,Hu, CM,Tang, DL,et al. World's Largest Macroalgal Blooms Altered Phytoplankton Biomass in Summer in the Yellow Sea: Satellite Observations[J]. REMOTE SENSING,2015,7(9):12297-12313.
APA Xing, QG.,Hu, CM.,Tang, DL.,Tian, LQ.,Tang, SL.,...&xlgao@yic.ac.cn.(2015).World's Largest Macroalgal Blooms Altered Phytoplankton Biomass in Summer in the Yellow Sea: Satellite Observations.REMOTE SENSING,7(9),12297-12313.
MLA Xing, QG,et al."World's Largest Macroalgal Blooms Altered Phytoplankton Biomass in Summer in the Yellow Sea: Satellite Observations".REMOTE SENSING 7.9(2015):12297-12313.
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