Seasonal Shift in Community Structure of Periphytic Ciliates in Estuarine Waters in the Northern Bay of Bengal, Bangladesh

To investigate the seasonal heterogeneity of the periphytic ciliate communities, a 1-year baseline survey was conducted in the Karnaphuli River estuary, northern Bay of Bengal, Bangladesh. A total of 54 ciliate species were recorded, including seven common and 14 dominant species. Maximum species nu...

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Bibliographic Details
Published in:Ocean science journal 2018, 53(4), , pp.707-718
Main Authors: Abdullah Al, Mamun, Forruq, Rahman Muhammed, Akhtar, Aysha, Alam, Md. Wahidul, Sikder, Mohammad Nurul Azim, Warren, Alan, Xu, Henglong
Format: Article
Language:English
Subjects:
Aquatic Pollution
Autumn
Bioindicators
Brackishwater environment
Community structure
Correlation analysis
Dissolved oxygen
Dominant species
Earth and Environmental Science
Earth Sciences
Environmental conditions
Estuaries
Estuarine dynamics
Heterogeneity
Marine & Freshwater Sciences
Mineral nutrients
Nutrients
Oceanography
Species diversity
Species richness
Summer
Surveying
Total dissolved solids
Waste Water Technology
Water Management
Water Pollution Control
Water quality
Water temperature
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Summary:To investigate the seasonal heterogeneity of the periphytic ciliate communities, a 1-year baseline survey was conducted in the Karnaphuli River estuary, northern Bay of Bengal, Bangladesh. A total of 54 ciliate species were recorded, including seven common and 14 dominant species. Maximum species number was in autumn whereas maximum abundance was in winter; the minimum for both occurred in summer. Multivariate analyses, i.e., canonical analysis of principal coordinates (CAP) and principal co-ordinates analysis (PCoA), revealed a clear seasonal heterogeneity of community structure and environmental variables. Multivariate correlation analysis (RELATE) demonstrated that the community structure of the periphytic ciliate communities was significantly correlated with environmental variables, and best matching analysis (BIOENV) indicated that heterogeneity of community patterns was mainly driven by water temperature, pH, dissolved oxygen, total dissolved solids and nutrients. Species richness and diversity peaked in autumn whereas species evenness peaked in summer. These results suggest that environmental conditions shape periphytic ciliate community structure, which is a potentially useful bio-indicator of estuarine water quality.
ISSN:1738-5261
2005-7172
DOI:10.1007/s12601-018-0048-5