DOI: 10.1016/j.marpolbul.2018.02.007
Scopus记录号: 2-s2.0-85044296006
论文题名: Intra-annual variations in phytoplankton biomass and its composition in the tropical estuary: Influence of river discharge
作者: Bharathi M.D. ; Sarma V.V.S.S. ; Ramaneswari K.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2018
卷: 129, 期: 1 起始页码: 14
结束页码: 25
语种: 英语
英文关键词: Estuary
; Nutrients
; Phytoplankton composition
; River discharge
; Stratification
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: To examine the influence of river discharge on phytoplankton composition, time-series observations were conducted at upper, middle and lower Godavari estuary during 2009. The salinity variations in the estuary were depended on freshwater discharge and tidal exchange. River discharge brought a significant amount of nutrients, however it did not induce phytoplankton bloom due to severe light limitation driven by high turbidity. Enhanced phytoplankton biomass and abundance were associated with water column stratification during moderate discharge period, suggesting that water column stability is more important than nutrients to promote phytoplankton blooms. The contribution of diatoms to the total phytoplankton abundance increased with decrease in salinity and vice versa for blue-green algae. The relationship of phytoplankton abundance with salinity and nutrients suggests that low salinity and high N:P ratio favored growth of blue-green algae, whereas high salinity and low N:P/N:Si favored diatoms. This study suggested that discharge brought modification in phytoplankton composition. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/88364
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: National Institute of Oceanography, Council of Scientific and Industrial Research, Regional Centre, 176 Lawsons Bay Colony, Visakhapatnam, India; Integrated Coastal and Marine Area Management Project Directorate (ICMAM PD), 2nd Floor, NIOT Campus, Pallikkaranai, Chennai, India; Department of Zoology, Adikavi Nannaya University, Rajahmundry, India
Recommended Citation:
Bharathi M.D.,Sarma V.V.S.S.,Ramaneswari K.. Intra-annual variations in phytoplankton biomass and its composition in the tropical estuary: Influence of river discharge[J]. Marine Pollution Bulletin,2018-01-01,129(1)