气候变化领域集成服务门户(CCPortal): Shallow convective mixing promotes massive Noctiluca scintillans bloom in the northeastern Arabian Sea

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DOI	10.1016/j.marpolbul.2018.11.054
	Shallow convective mixing promotes massive Noctiluca scintillans bloom in the northeastern Arabian Sea
	Sarma V.V.S.S.; Patil J.S.; Shankar D.; Anil A.C.
发表日期	2019
ISSN	0025326X
起始页码	428
结束页码	436
卷号	138
英文摘要	The northeastern Arabian Sea (NEAS) experiences convective mixing during winter, but this mixing does not reach up to the silicicline, resulting in the limited supply of silicate (Si) compared to nitrate (N) and phosphate (P) to the mixed layer (ML) and formation of non-diatom blooms. The poleward advection of waters of low surface salinity by the West India Coastal Current (WICC) to the NEAS weakens the vertical mixing and reduces the Si input to the mixed layer, resulting in occurrence of Noctiluca scintillans blooms. The saturation of dissolved oxygen in the NEAS varied between 88 and 98%, suggesting N. scintillans blooms occur in oxic conditions. Enhanced cell abundance of N. scintillans was observed in the bloom region in the upper 10 m. Phytoplankton pigments data revealed higher contribution of Chlorophytes, Prasinophytes, Prymnesiophytes and Prochlorophytes in the bloom than non-bloom region. The isotopic composition of nitrogen and carbon of particulate organic matter indicated that natural and in situ processes contributed to both nutrients and organic carbon pool in the NEAS in supporting the massive occurrence of N. scintillans blooms than hitherto hypothesized to anthropogenic sources. This study further suggests that the effect of anthropogenic pollutants released into the NEAS from the mega-cities is limited to the neighbourhood of these cities and does not affect the open ocean. © 2018 Elsevier Ltd
英文关键词	Arabian Sea; Blooms; convective mixing; Noctiluca scintillans; Nutrients; Stable isotopes
语种	英语
scopus关键词	Biological materials; Dissolved oxygen; Isotopes; Nutrients; Organic carbon; Silicates; Arabian sea; Blooms; Convective mixing; Noctiluca scintillans; Stable isotopes; Mixing; carbon; nitrogen; organic carbon; organic matter; algal bloom; anthropogenic source; carbon isotope; nitrogen isotope; nutrient cycling; vertical mixing; algal bloom; Arabian Sea; Article; chemical composition; chemical reaction; convective mixing; dinoflagellate; ecosystem health; hydrography; Noctiluca scintillan; nonhuman; nutrient supply; particulate matter; phytoplankton; population abundance; sea pollution; dinoflagellate; environmental monitoring; growth, development and aging; North Sea; Arabian Sea; Indian Ocean; Bacillariophyta; Chlorophyta; Haptophyceae; Noctiluca scintillans; Prasinophyceae; Prochlorales; Dinoflagellida; Environmental Monitoring; North Sea; Nutrients; Phytoplankton
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150198
作者单位	CSIR-National Institute of Oceanography, 176 Regional Centre, Visakhapatnam, India; CSIR-National Institute of Oceanography, Dona Paula, Goa, India
推荐引用方式 GB/T 7714	Sarma V.V.S.S.,Patil J.S.,Shankar D.,et al. Shallow convective mixing promotes massive Noctiluca scintillans bloom in the northeastern Arabian Sea[J],2019,138.
APA	Sarma V.V.S.S.,Patil J.S.,Shankar D.,&Anil A.C..(2019).Shallow convective mixing promotes massive Noctiluca scintillans bloom in the northeastern Arabian Sea.Marine Pollution Bulletin,138.
MLA	Sarma V.V.S.S.,et al."Shallow convective mixing promotes massive Noctiluca scintillans bloom in the northeastern Arabian Sea".Marine Pollution Bulletin 138(2019).