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题名:
World's Largest Macroalgal Blooms Altered Phytoplankton Biomass in Summer in the Yellow Sea: Satellite Observations
作者: Xing, QianGuo(邢前国); Hu, CM; Tang, DL; Tian, LQ; Tang, SL; Wang, XH; Lou, MJ; Gao, XueLu(高学鲁)
刊名: REMOTE SENSING
ISSN号: 2072-4292
出版日期: 2015-09-01
卷号: 7, 期号:9, 页码:12297-12313
关键词: macroalgal blooms ; Ulva prolifera ; phytoplankton ; nutrient competition ; chlorophyll-a ; ocean color ; MODIS ; Yellow Sea
DOI: 10.3390/rs70912297
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
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
作者部门: 海岸带信息集成与综合管理实验室
中文摘要: 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.
英文摘要: 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.
研究领域[WOS]: Remote Sensing
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)
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
收录类别: SCI
语种: 英语
WOS记录号: WOS:000362511400061
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内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/9533
Appears in Collections:海岸带信息集成与综合管理实验室_期刊论文

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Recommended Citation:
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.
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