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Title: Seasonal shift in soft bottom-dwelling community structure in coastal waters of the northern Bay of Bengal, Indian Ocean
Authors: Abdullah, Mamun Al
Alam, Md. Didarul
Akhtar, Aysha
Kamal, Abu Hena Mustafa
Islam, Md. Shafiqul
Alam, Md. Wahidul
Forruq, Rahman Muhammed
Uddin, M Muslem
Xu, Henglong
Keywords: Macro benthos;Seasonal shift;Community structure;Environmental monitoring;Coastal ecosystem
Issue Date: Oct-2018
Publisher: NISCAIR-CSIR, India
Abstract: Benthic invertebrate communities play an important role in functioning of benthic food webs and commonly used as potential biomarkers in environmental monitoring programs. The seasonal variation in community structures of macro benthos was studied in northern Bay of Bengal, Bangladesh from summer 2015 to spring 2016. A total of 45 species belonging to 35 families, 25 orders and 5 classes were identified. Of these species, 14 were commonly distributed and 10 were highest contributors. The species number, total abundance and species richness peaked in summer and sharply dropped in winter whereas evenness and diversity were highest in spring and both were lowest in winter. Multivariate analysis (CAP and RELATE) revealed a clear significant seasonal shift in community patterns of the benthic communities with relation to environmental variables. Further, BIOENV signified that water temperature, salinity, dissolved oxygen and water nutrients were the main drivers to shape the community structure. These finding suggest that seasonal shift in benthic communities in response to environmental changes might be used as bio indicators for discriminating environmental quality status in coastal ecosystems.
Page(s): 2021-2031
ISSN: 0975-1033 (Online); 0379-5136 (Print)
Appears in Collections:IJMS Vol.47(10) [October 2018]

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