Spatio-temporal variation in phytoplankton communities along a salinity and pH gradient in a tropical estuary (Brunei, Borneo, South East Asia)

Spatio-temporal variation in phytoplankton communities along a salinity and pH gradient in a tropical estuary (Brunei, Borneo, South East Asia)

Tropical estuaries often have a low buffering capacity and may experience acidification, both naturally through microbial degradation and run-off from acid sulphate soils (ASS), or from various anthropogenic sources. Here, we describe phytoplankton communities from the turbid, acidified, and eutr...

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Main Authors: Majewska, Roksana, Adam, Aimimuliani, Mohammad Noor, Normawaty, Convey, Peter, Stefano, Mario De, Marshall, David J.
Format: Article
Language:English
English
Published: International Society for Tropical Ecology 2017
Subjects:
QL Zoology
Online Access:http://irep.iium.edu.my/63132/
http://irep.iium.edu.my/63132/
http://irep.iium.edu.my/63132/2/63132_Spatio-temporal%20variation%20in%20phytoplankton_scopus.pdf
http://irep.iium.edu.my/63132/9/63132_Spatio-temporal%20variation%20in%20phytoplankton%20communities.pdf
id iium-63132
recordtype eprints
spelling iium-631322018-04-23T01:30:06Z http://irep.iium.edu.my/63132/ Spatio-temporal variation in phytoplankton communities along a salinity and pH gradient in a tropical estuary (Brunei, Borneo, South East Asia) Majewska, Roksana Adam, Aimimuliani Mohammad Noor, Normawaty Convey, Peter Stefano, Mario De Marshall, David J. QL Zoology Tropical estuaries often have a low buffering capacity and may experience acidification, both naturally through microbial degradation and run-off from acid sulphate soils (ASS), or from various anthropogenic sources. Here, we describe phytoplankton communities from the turbid, acidified, and eutrophic Sungai Brunei and Brunei Bay estuarine system. Four sampling stations were selected, representing the full spectrum of the salinity (0.4–28.5 PSU) and pH (5.87–8.06) gradients associated with this system. A total of 25 microalgal families of phytoplankton (including 22 diatom and seven dinoflagellate genera) and one of ciliates were recorded in the survey, which was carried out between August 2011 and June 2012. Phytoplankton density ranged from 7 to 9107 cells ml-1. Diatoms were a dominant component of the communities, with Nitzschia spp., Rhizosolenia spp., and Leptocylindrus sp. reaching the highest abundances. Phytoplankton communities present at the four sampling stations differed significantly in terms of both algal abundance and composition and were strongly influenced by the effect of season (30% of the total variance). The interactive effects of pH and salinity, and of pH and temperature, explained 16.7% and 17.5% of the total observed variation, respectively. A positive correlation between pH and the number of taxa found was detected. The functional diversity observed in phytoplankton from the Brunei River estuary was generally low with few taxa adapted well to the chronically low pH conditions. This study provides baseline data about structural and compositional changes in a tropical estuarine phytoplankton community associated with various levels of acidification of both natural and anthropogenic origins. International Society for Tropical Ecology 2017 Article PeerReviewed application/pdf en http://irep.iium.edu.my/63132/2/63132_Spatio-temporal%20variation%20in%20phytoplankton_scopus.pdf application/pdf en http://irep.iium.edu.my/63132/9/63132_Spatio-temporal%20variation%20in%20phytoplankton%20communities.pdf Majewska, Roksana and Adam, Aimimuliani and Mohammad Noor, Normawaty and Convey, Peter and Stefano, Mario De and Marshall, David J. (2017) Spatio-temporal variation in phytoplankton communities along a salinity and pH gradient in a tropical estuary (Brunei, Borneo, South East Asia). Tropical Ecology, 58 (2). pp. 251-269. ISSN 0564-3295 http://tropecol.com/pdf/open/PDF_58_2/4/4.%20Majewska%20et%20al.pdf
repository_type Digital Repository
institution_category Local University
institution International Islamic University Malaysia
building IIUM Repository
collection Online Access
language English
English
topic QL Zoology
spellingShingle QL Zoology
Majewska, Roksana
Adam, Aimimuliani
Mohammad Noor, Normawaty
Convey, Peter
Stefano, Mario De
Marshall, David J.
Spatio-temporal variation in phytoplankton communities along a salinity and pH gradient in a tropical estuary (Brunei, Borneo, South East Asia)
description Tropical estuaries often have a low buffering capacity and may experience acidification, both naturally through microbial degradation and run-off from acid sulphate soils (ASS), or from various anthropogenic sources. Here, we describe phytoplankton communities from the turbid, acidified, and eutrophic Sungai Brunei and Brunei Bay estuarine system. Four sampling stations were selected, representing the full spectrum of the salinity (0.4–28.5 PSU) and pH (5.87–8.06) gradients associated with this system. A total of 25 microalgal families of phytoplankton (including 22 diatom and seven dinoflagellate genera) and one of ciliates were recorded in the survey, which was carried out between August 2011 and June 2012. Phytoplankton density ranged from 7 to 9107 cells ml-1. Diatoms were a dominant component of the communities, with Nitzschia spp., Rhizosolenia spp., and Leptocylindrus sp. reaching the highest abundances. Phytoplankton communities present at the four sampling stations differed significantly in terms of both algal abundance and composition and were strongly influenced by the effect of season (30% of the total variance). The interactive effects of pH and salinity, and of pH and temperature, explained 16.7% and 17.5% of the total observed variation, respectively. A positive correlation between pH and the number of taxa found was detected. The functional diversity observed in phytoplankton from the Brunei River estuary was generally low with few taxa adapted well to the chronically low pH conditions. This study provides baseline data about structural and compositional changes in a tropical estuarine phytoplankton community associated with various levels of acidification of both natural and anthropogenic origins.
format Article
author Majewska, Roksana
Adam, Aimimuliani
Mohammad Noor, Normawaty
Convey, Peter
Stefano, Mario De
Marshall, David J.
author_facet Majewska, Roksana
Adam, Aimimuliani
Mohammad Noor, Normawaty
Convey, Peter
Stefano, Mario De
Marshall, David J.
author_sort Majewska, Roksana
title Spatio-temporal variation in phytoplankton communities along a salinity and pH gradient in a tropical estuary (Brunei, Borneo, South East Asia)
title_short Spatio-temporal variation in phytoplankton communities along a salinity and pH gradient in a tropical estuary (Brunei, Borneo, South East Asia)
title_full Spatio-temporal variation in phytoplankton communities along a salinity and pH gradient in a tropical estuary (Brunei, Borneo, South East Asia)
title_fullStr Spatio-temporal variation in phytoplankton communities along a salinity and pH gradient in a tropical estuary (Brunei, Borneo, South East Asia)
title_full_unstemmed Spatio-temporal variation in phytoplankton communities along a salinity and pH gradient in a tropical estuary (Brunei, Borneo, South East Asia)
title_sort spatio-temporal variation in phytoplankton communities along a salinity and ph gradient in a tropical estuary (brunei, borneo, south east asia)
publisher International Society for Tropical Ecology
publishDate 2017
url http://irep.iium.edu.my/63132/
http://irep.iium.edu.my/63132/
http://irep.iium.edu.my/63132/2/63132_Spatio-temporal%20variation%20in%20phytoplankton_scopus.pdf
http://irep.iium.edu.my/63132/9/63132_Spatio-temporal%20variation%20in%20phytoplankton%20communities.pdf
first_indexed 2023-09-18T21:29:35Z
last_indexed 2023-09-18T21:29:35Z
_version_ 1777412420668489728

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