Seasonal variability in plankton food web composition in Tuticorin coastal waters, south east coast of India

To understand the impact of seasonal variability on plankton food web composition in tropical coastal waters, samples were collected from three locations along Tuticorin coastal waters during postmonsoon, summer, and northeast (NE) monsoon seasons. During the NE monsoon, the total suspended matter (...

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Bibliographic Details
Published in:Marine pollution bulletin 2018-12, Vol.137, p.408-417
Main Authors: Bharathi, M.D., Patra, Sivaji, Sundaramoorthy, S., Madeswaran, P., Chandrasekar, D., Sundaramanickam, A.
Format: Article
Language:English
Subjects:
Abundance
Animals
Aquaculture
Biomass
Cluster Analysis
Coastal waters
Coasts
Composition
Cyanobacteria
Diatoms
Environment
Environmental Monitoring - methods
Food
Food Chain
Food chains
Food composition
Food web
Food webs
Foods
Grazers
India
Industrial Waste
Light penetration
Loads (forces)
Mineral nutrients
Monsoons
Nutrient concentrations
Nutrient loading
Nutrients
Phytoplankton
Phytoplankton - physiology
Plankton
Plankton - physiology
Rain
Rainfall
Salinity
Seasonal variation
Seasonal variations
Seasonality
Seasons
Seawater - analysis
Seawater - microbiology
Suspended matter
Tropical climate
TSM
Variability
Zooplankton
Zooplankton - physiology
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Summary:To understand the impact of seasonal variability on plankton food web composition in tropical coastal waters, samples were collected from three locations along Tuticorin coastal waters during postmonsoon, summer, and northeast (NE) monsoon seasons. During the NE monsoon, the total suspended matter (TSM) and nutrient concentrations were relatively higher, whereas salinity and plankton (phytoplankton and zooplankton) abundances were lower. Cluster analysis also revealed that the NE monsoon formed into a separate cluster because of the lower phytoplankton abundance caused by higher loads of TSM; this arrests light penetration, thereby resulting in a decrease in plankton abundance. The increase in zooplankton biomass coincided with the decrease in diatoms (p 
ISSN:0025-326X
1879-3363
DOI:10.1016/j.marpolbul.2018.10.042