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Influence of nutrient fluxes on phytoplankton community and harmful algal blooms along the coastal waters of southeastern Arabian Sea
- Source :
- Continental Shelf Research. 161:20-28
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- The seasonal variation in phytoplankton composition as well as the influencing factors on phytoplankton community were examined for the coastal waters of Kochi, southeastern Arabian Sea during 2015. The elevated flux of total nitrogen (TN) and silica (Si) during the summer monsoon (SM) induced the harmful algal blooms (HABs) of Scrippsiella trochoidea (11.9 × 105 cells L−1) and Karenia mikimotoi (6 × 105 cells L−1) near the inlets of Kochi estuary. Blooms of S. trochoidea were recorded for the first time in the Indian waters. The satellite data of chlorophyll-a showed the significant correlation with insitu observations of phytoplankton abundance and provided a better understanding of the spatio-temporal distribution. The canonical correspondence analysis indicates that the increased TN and Si fluxes and lower temperature induced the HABs during the SM. The reduction in the load of N and Si in the coastal waters of southeastern Arabian Sea is essential for controlling the HABs.
- Subjects :
- 0106 biological sciences
geography
Karenia mikimotoi
geography.geographical_feature_category
010504 meteorology & atmospheric sciences
biology
010604 marine biology & hydrobiology
Geology
Estuary
Aquatic Science
Seasonality
Oceanography
biology.organism_classification
Monsoon
medicine.disease
01 natural sciences
Algal bloom
Canonical correspondence analysis
Phytoplankton
medicine
Environmental science
Trochoidea (genus)
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 02784343
- Volume :
- 161
- Database :
- OpenAIRE
- Journal :
- Continental Shelf Research
- Accession number :
- edsair.doi...........e6af77eda89b43cc926e7117fb5f6883