Influence of short-term hydrographic variations during the north-east monsoon on picophytoplankton community structure in the eastern Arabian Sea

2017 ◽  
Vol 146 ◽  
pp. 28-36 ◽  
Author(s):  
K.M. Rajaneesh ◽  
Smita Mitbavkar ◽  
A.C. Anil
Keyword(s):  
Community Structure ◽  
Arabian Sea ◽  
Short Term ◽  
North East ◽  
The North ◽  
Eastern Arabian Sea

Features of degenerative mitral valve prolapse in the North East of China: repair characteristics, and short-term follow-up results

2020 ◽  
Vol 68 (5) ◽  
Author(s):  
Silvia Corona ◽  
Paolo Barbier ◽  
Guangyu Liu ◽  
Osafo A. Annoh ◽  
Marcio Scorsin ◽  
...  
Keyword(s):  
Mitral Valve ◽  
Mitral Valve Prolapse ◽  
Short Term ◽  
North East ◽  
The North

Influence of environmental variables on the distribution and community structure of mesozooplankton in the coastal waters of the eastern Arabian Sea

2020 ◽  
Vol 39 ◽  
pp. 101480
Author(s):  
P. Ezhilarasan ◽  
Vishnu Vardhan Kanuri ◽  
P. Sathish Kumar ◽  
M. Kumaraswami ◽  
G. Durga Rao ◽  
...  
Keyword(s):  
Community Structure ◽  
Coastal Waters ◽  
Environmental Variables ◽  
Arabian Sea ◽  
Eastern Arabian Sea

Phytoplankton community structure in a contrasting physico-chemical regime along the eastern Arabian Sea during the winter monsoon

2021 ◽  
Vol 215 ◽  
pp. 103501
Author(s):  
Anil Kumar Vijayan ◽  
B. Bikram Reddy ◽  
V. Sudheesh ◽  
Prachi Hemant Marathe ◽  
Vishnu N. Nampoothiri ◽  
...  
Keyword(s):  
Community Structure ◽  
Arabian Sea ◽  
Phytoplankton Community ◽  
Winter Monsoon ◽  
Phytoplankton Community Structure ◽  
Physico Chemical ◽  
Eastern Arabian Sea

Evaluation of changes in macrobenthic standing stock and polychaete community structure along the south eastern Arabian Sea shelf during the monsoon trawl-ban

2015 ◽  
Vol 102 ◽  
pp. 9-18 ◽  
Author(s):  
K.U. Abdul Jaleel ◽  
Usha V. Parameswaran ◽  
Aiswarya Gopal ◽  
Chippy Khader ◽  
T. Ganesh ◽  
...  
Keyword(s):  
Community Structure ◽  
Arabian Sea ◽  
Standing Stock ◽  
The South ◽  
South Eastern ◽  
Eastern Arabian Sea

scholarly journals Interannual stability of phytoplankton community composition in the North-East Atlantic

2020 ◽  
Vol 655 ◽  
pp. 43-57
Author(s):  
S Allen ◽  
S Henson ◽  
A Hickman ◽  
C Beaulieu ◽  
PC Doncaster ◽  
...  
Keyword(s):  
Community Structure ◽  
Community Composition ◽  
Phytoplankton Community ◽  
Decadal Variability ◽  
Mixed Layer Depth ◽  
Phytoplankton Community Structure ◽  
East Atlantic ◽  
Phytoplankton Community Composition ◽  
North East ◽  
The North

As primary producers, phytoplankton play a pivotal role in the marine environment and are central to many biogeochemical processes. Changes to phytoplankton community composition could have major consequences for wider ecosystem functioning and may occur in response to climate change. Here we describe multi-decadal variability in phytoplankton community structure using taxonomic data from the Continuous Plankton Recorder collected in the North-East Atlantic from 1969-2013, using a total of 42 diatom and dinoflagellate taxa. We considered a range of characteristics of community structure, including taxonomic diversity and community stability and disorder, and how these characteristics change in response to sea surface temperature, mixed layer depth and the North Atlantic Oscillation. We found that phytoplankton community composition was largely stable on interannual timescales. A change in community composition occurred between 1985 and 1995 due to an increased dominance of 2 diatom taxa (Rhizosolenia styliformis and Thalassiosira spp.); however, after this period, the community returned to its previous composition. Further, a community disorder analysis found that phytoplankton compositional structure became more rigid in recent years, which may lead to an eventual community shift in the future. In contrast to previous studies that revealed relationships between total phytoplankton abundance or biomass and environmental forcing, we found that community structure had, at most, a very weak relationship with the environmental parameters tested. Changes to the physical environment may therefore have less influence at interannual timescales on phytoplankton community structure than previously thought.

scholarly journals <sup>15</sup>N enrichment in the surface Particulate Organic Nitrogen of the north-eastern Arabian Sea from the middle to the waning phase of the winter monsoon: possible causes

2007 ◽  
Vol 4 (1) ◽  
pp. 245-264
Author(s):  
S. Kumar ◽  
R. Ramesh
Keyword(s):  
Water Column ◽  
Arabian Sea ◽  
Organic Nitrogen ◽  
Subsurface Layer ◽  
The North ◽  
North Eastern ◽  
Eastern Arabian Sea ◽  
Nitrogen Isotopic Composition ◽  
Hydrographic Conditions ◽  
N Enrichment

Abstract. A temporal increase of ~5‰ in the average nitrogen isotopic composition (δ15NPON) of surface particulate organic nitrogen was observed in the open north-eastern Arabian Sea during January to late February-early March 2003, despite the presence of T. erithraeum (up to ~11%), a diazotroph that fixes atmospheric N2, in the latter period. Hydrographic conditions and residence time of nitrate in the water column suggested that this increase could be a combined effect of denitrification in the subsurface layer and inefficient utilization of nitrate entrained in the water column during January.

Symbiosis between the stramenopile protist Solenicola setigera and the diatom Leptocylindrus mediterraneus in the North Eastern Arabian Sea

Symbiosis ◽  
2012 ◽  
Vol 56 (2) ◽  
pp. 97-101 ◽  
Author(s):  
K. B. Padmakumar ◽  
Lathika Cicily ◽  
Anu Shaji ◽  
T. P. Maneesh ◽  
V. N. Sanjeevan
Keyword(s):  
Arabian Sea ◽  
The North ◽  
North Eastern ◽  
Eastern Arabian Sea
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