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Vertical and horizontal distribution of sand-dwelling dinoflagellates from Dinawan Island, Sabah, Malaysia

A study on the vertical and horizontal distribution of sand-dwelling dinoflagellates was conducted over a one year period in the coastal and lagoon areas of Dinawan Island. Fifty metre line transects were horizontally laid out perpendicular to the beach. At each station, 12–14 cm of sediments was v...

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Main Authors: Mohammad Noor, Normawaty, Adam, Aimimuliani, Al-Has, Asilah, Saad, Shahbudin, Ahmad, Zuhairi
Format: Conference or Workshop Item
Language:English
Published: 2016
Subjects:
Q Science (General)
Online Access:http://irep.iium.edu.my/57353/11/57353.pdf
http://irep.iium.edu.my/57353/
http://www.iium.edu.my/icosmap/2016/
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spelling my.iium.irep.573532017-07-06T08:04:13Z http://irep.iium.edu.my/57353/ Vertical and horizontal distribution of sand-dwelling dinoflagellates from Dinawan Island, Sabah, Malaysia Mohammad Noor, Normawaty Adam, Aimimuliani Al-Has, Asilah Saad, Shahbudin Ahmad, Zuhairi Q Science (General) A study on the vertical and horizontal distribution of sand-dwelling dinoflagellates was conducted over a one year period in the coastal and lagoon areas of Dinawan Island. Fifty metre line transects were horizontally laid out perpendicular to the beach. At each station, 12–14 cm of sediments was vertically collected (10m interval). These sediments were divided every 2 cm over a 10 cm distance. At each slice of the sediments, sand-dwelling dinoflagellates were identified and counted. Furthermore, the sediments were sieved for sand size characteristics. Sand total phosphorus and total nitrogen were horizontally determined. Sixteen species of dinoflagellates were identified including five dominant dinoflagellates species viz. Prorocentrum lima, P. rhathymum, Amphidinium carterae, Bsymatrum caponii and Peridinium quinquercorne. The number of dinoflagellate cells was concentrated at the top 2 cm of the sediment and tended to decrease towards the deeper depth at the coastal and lagoon areas . The horizontal distribution of sand-dwelling dinoflagellates depended on the geomorphology of the area. In the coastal areas, the distribution of sand-dwelling organisms increased towards the sea but not towards the lagoon areas. However, a positive correlation was found between fine sediment size and sand dwelling abundance and not for other parameters studied. This indicates that the sediment characteristics played an important role in determining the abundance of sand-dwelling dinoflagellates. 2016 Conference or Workshop Item REM application/pdf en http://irep.iium.edu.my/57353/11/57353.pdf Mohammad Noor, Normawaty and Adam, Aimimuliani and Al-Has, Asilah and Saad, Shahbudin and Ahmad, Zuhairi (2016) Vertical and horizontal distribution of sand-dwelling dinoflagellates from Dinawan Island, Sabah, Malaysia. In: 2nd International Conference on Oceanography and Sustainable Marine Production (ICOSMaP 2016), 23rd-25th August 2016, Kuantan, Pahang. (Unpublished) http://www.iium.edu.my/icosmap/2016/
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
topic Q Science (General)
spellingShingle Q Science (General)
Mohammad Noor, Normawaty
Adam, Aimimuliani
Al-Has, Asilah
Saad, Shahbudin
Ahmad, Zuhairi
Vertical and horizontal distribution of sand-dwelling dinoflagellates from Dinawan Island, Sabah, Malaysia
description A study on the vertical and horizontal distribution of sand-dwelling dinoflagellates was conducted over a one year period in the coastal and lagoon areas of Dinawan Island. Fifty metre line transects were horizontally laid out perpendicular to the beach. At each station, 12–14 cm of sediments was vertically collected (10m interval). These sediments were divided every 2 cm over a 10 cm distance. At each slice of the sediments, sand-dwelling dinoflagellates were identified and counted. Furthermore, the sediments were sieved for sand size characteristics. Sand total phosphorus and total nitrogen were horizontally determined. Sixteen species of dinoflagellates were identified including five dominant dinoflagellates species viz. Prorocentrum lima, P. rhathymum, Amphidinium carterae, Bsymatrum caponii and Peridinium quinquercorne. The number of dinoflagellate cells was concentrated at the top 2 cm of the sediment and tended to decrease towards the deeper depth at the coastal and lagoon areas . The horizontal distribution of sand-dwelling dinoflagellates depended on the geomorphology of the area. In the coastal areas, the distribution of sand-dwelling organisms increased towards the sea but not towards the lagoon areas. However, a positive correlation was found between fine sediment size and sand dwelling abundance and not for other parameters studied. This indicates that the sediment characteristics played an important role in determining the abundance of sand-dwelling dinoflagellates.
format Conference or Workshop Item
author Mohammad Noor, Normawaty
Adam, Aimimuliani
Al-Has, Asilah
Saad, Shahbudin
Ahmad, Zuhairi
author_facet Mohammad Noor, Normawaty
Adam, Aimimuliani
Al-Has, Asilah
Saad, Shahbudin
Ahmad, Zuhairi
author_sort Mohammad Noor, Normawaty
title Vertical and horizontal distribution of sand-dwelling dinoflagellates from Dinawan Island, Sabah, Malaysia
title_short Vertical and horizontal distribution of sand-dwelling dinoflagellates from Dinawan Island, Sabah, Malaysia
title_full Vertical and horizontal distribution of sand-dwelling dinoflagellates from Dinawan Island, Sabah, Malaysia
title_fullStr Vertical and horizontal distribution of sand-dwelling dinoflagellates from Dinawan Island, Sabah, Malaysia
title_full_unstemmed Vertical and horizontal distribution of sand-dwelling dinoflagellates from Dinawan Island, Sabah, Malaysia
title_sort vertical and horizontal distribution of sand-dwelling dinoflagellates from dinawan island, sabah, malaysia
publishDate 2016
url http://irep.iium.edu.my/57353/11/57353.pdf
http://irep.iium.edu.my/57353/
http://www.iium.edu.my/icosmap/2016/
_version_ 1643615126264217600
score 13.211869

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