Seasonal variations in the structure of copepod assemblages in tropical marine and estuarine waters, Coleroon, South-East India

A twelve-month investigation was undertaken on how copepod community structure varied in relation to environmental factors in the Coleroon estuary, south-east India. Sampling was monthly, from Station 1 in the sea to Station 4 in the Vettar backwaters. Canonical correspondence analysis (CCA) was a...

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Main Authors:	Rajkumar, Mayalagu, Sun, Jun, Jenkinson, I. R., Rahman, Mohammad Mustafizur
Format:	Article
Language:	English
Published:	Marine Biological Association of the United Kingdom 2014
Subjects:	SH Aquaculture. Fisheries. Angling
Online Access:	http://irep.iium.edu.my/36175/ http://irep.iium.edu.my/36175/ http://irep.iium.edu.my/36175/ http://irep.iium.edu.my/36175/1/M_M_Rahman_2014.pdf

id	iium-36175
recordtype	eprints
spelling	iium-361752014-04-16T05:14:02Z http://irep.iium.edu.my/36175/ Seasonal variations in the structure of copepod assemblages in tropical marine and estuarine waters, Coleroon, South-East India Rajkumar, Mayalagu Sun, Jun Jenkinson, I. R. Rahman, Mohammad Mustafizur SH Aquaculture. Fisheries. Angling A twelve-month investigation was undertaken on how copepod community structure varied in relation to environmental factors in the Coleroon estuary, south-east India. Sampling was monthly, from Station 1 in the sea to Station 4 in the Vettar backwaters. Canonical correspondence analysis (CCA) was applied to elucidate the environmental factors affecting the copepod community. A total of 104 copepod species in 38 genera and 26 families were recorded, with the Calanoids, Acartia erythraea and Oithona brevicornis being the most dominant. At all four stations, both these species loaded near the intercept of CCA axes 1 and 2, perhaps reflecting that they were autochthonous. Most species occurred in distinct seasonal patterns. Abundances ranged from 13 × 103 to 215 × 103 (ind. m-3). Coleroon waters showed high diversity (bits/ind.), from 5.29 at Station 3 to 4.97 at Station 4. Abundance correlated positively with temperature and salinity and negatively with rainfall, dissolved oxygen concentration (DO) and pH. Species diversity correlated strongly with abundance (P<0.01). Abundance and diversity were highest during the summer, and both correlated positively with salinity. Temperatures (air and water), salinity, pH and DO varied in the ranges 26–36oC,25–34.2oC, 9–38, 7.0–8.7 and 3.0–6.8 ml l-1, respectively. Nitrate, nitrite, phosphate and silicate (mM) varied in the ranges: 4.7–64.5, 0.4–14.1, 0.2–12.9 and 9.3–148, respectively. Marine Biological Association of the United Kingdom 2014 Article PeerReviewed application/pdf en http://irep.iium.edu.my/36175/1/M_M_Rahman_2014.pdf Rajkumar, Mayalagu and Sun, Jun and Jenkinson, I. R. and Rahman, Mohammad Mustafizur (2014) Seasonal variations in the structure of copepod assemblages in tropical marine and estuarine waters, Coleroon, South-East India. Journal of the Marine Biological Association of the United Kingdom, 94 (3). pp. 521-535. ISSN 0025-3154 http://journals.cambridge.org/action/displayJournal?jid=MBI 10.1017/S0025315413001768
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	SH Aquaculture. Fisheries. Angling
spellingShingle	SH Aquaculture. Fisheries. Angling Rajkumar, Mayalagu Sun, Jun Jenkinson, I. R. Rahman, Mohammad Mustafizur Seasonal variations in the structure of copepod assemblages in tropical marine and estuarine waters, Coleroon, South-East India
description	A twelve-month investigation was undertaken on how copepod community structure varied in relation to environmental factors in the Coleroon estuary, south-east India. Sampling was monthly, from Station 1 in the sea to Station 4 in the Vettar backwaters. Canonical correspondence analysis (CCA) was applied to elucidate the environmental factors affecting the copepod community. A total of 104 copepod species in 38 genera and 26 families were recorded, with the Calanoids, Acartia erythraea and Oithona brevicornis being the most dominant. At all four stations, both these species loaded near the intercept of CCA axes 1 and 2, perhaps reflecting that they were autochthonous. Most species occurred in distinct seasonal patterns. Abundances ranged from 13 × 103 to 215 × 103 (ind. m-3). Coleroon waters showed high diversity (bits/ind.), from 5.29 at Station 3 to 4.97 at Station 4. Abundance correlated positively with temperature and salinity and negatively with rainfall, dissolved oxygen concentration (DO) and pH. Species diversity correlated strongly with abundance (P<0.01). Abundance and diversity were highest during the summer, and both correlated positively with salinity. Temperatures (air and water), salinity, pH and DO varied in the ranges 26–36oC,25–34.2oC, 9–38, 7.0–8.7 and 3.0–6.8 ml l-1, respectively. Nitrate, nitrite, phosphate and silicate (mM) varied in the ranges: 4.7–64.5, 0.4–14.1, 0.2–12.9 and 9.3–148, respectively.
format	Article
author	Rajkumar, Mayalagu Sun, Jun Jenkinson, I. R. Rahman, Mohammad Mustafizur
author_facet	Rajkumar, Mayalagu Sun, Jun Jenkinson, I. R. Rahman, Mohammad Mustafizur
author_sort	Rajkumar, Mayalagu
title	Seasonal variations in the structure of copepod assemblages in tropical marine and estuarine waters, Coleroon, South-East India
title_short	Seasonal variations in the structure of copepod assemblages in tropical marine and estuarine waters, Coleroon, South-East India
title_full	Seasonal variations in the structure of copepod assemblages in tropical marine and estuarine waters, Coleroon, South-East India
title_fullStr	Seasonal variations in the structure of copepod assemblages in tropical marine and estuarine waters, Coleroon, South-East India
title_full_unstemmed	Seasonal variations in the structure of copepod assemblages in tropical marine and estuarine waters, Coleroon, South-East India
title_sort	seasonal variations in the structure of copepod assemblages in tropical marine and estuarine waters, coleroon, south-east india
publisher	Marine Biological Association of the United Kingdom
publishDate	2014
url	http://irep.iium.edu.my/36175/ http://irep.iium.edu.my/36175/ http://irep.iium.edu.my/36175/ http://irep.iium.edu.my/36175/1/M_M_Rahman_2014.pdf
first_indexed	2023-09-18T20:51:47Z
last_indexed	2023-09-18T20:51:47Z
_version_	1777410042698399744

Seasonal variations in the structure of copepod assemblages in tropical marine and estuarine waters, Coleroon, South-East India

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