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The variation of environmental profiles during harmful algal bloom in Sepanggar Bay, Sabah, Malaysia

Harmful algal bloom (HAB) events that lead to paralytic shellfish poisoning, fish fatalities, and seawater discolouration have been documented in Sabah’s coastal waters. Studies on nutrient analysis during HAB have been carried out periodically in Sabah’s waters; however, observation on variations o...

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Main Authors: Diana Lorons, Madihah Jafar Sidik, Nurzaliah Ali, Firas Mohamad Azaini, Kenneth Francis Rodrigues, Wei, Grace Joy Lie Chin
Format: Article
Language:English
English
Published: Springer Nature Singapore Pte Ltd 2022
Subjects:
QK504-(638) Cryptogams
Online Access:https://eprints.ums.edu.my/id/eprint/33394/1/The%20variation%20of%20environmental%20profiles%20during%20harmful%20algal%20bloom%20in%20Sepanggar%20Bay%2C%20Sabah%2C%20Malaysia.ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/33394/2/The%20variation%20of%20environmental%20profiles%20during%20harmful%20algal%20bloom%20in%20Sepanggar%20Bay%2C%20Sabah%2C%20Malaysia.pdf
https://eprints.ums.edu.my/id/eprint/33394/
https://link.springer.com/article/10.1007/s10872-022-00634-9
https://doi.org/10.1007/s10872-022-00634-9
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spelling my.ums.eprints.333942022-07-21T00:02:44Z https://eprints.ums.edu.my/id/eprint/33394/ The variation of environmental profiles during harmful algal bloom in Sepanggar Bay, Sabah, Malaysia Diana Lorons Madihah Jafar Sidik Nurzaliah Ali Firas Mohamad Azaini Kenneth Francis Rodrigues Wei, Grace Joy Lie Chin QK504-(638) Cryptogams Harmful algal bloom (HAB) events that lead to paralytic shellfish poisoning, fish fatalities, and seawater discolouration have been documented in Sabah’s coastal waters. Studies on nutrient analysis during HAB have been carried out periodically in Sabah’s waters; however, observation on variations of environmental parameters, primarily colour-producing agents’ (CPAs) concentrations, associated with HAB have not been carried out. Hence, this study aims to document environmental parameters and the CPAs over a period of 1 year. The study was conducted along the coastal waters of Sepanggar Bay, Malaysia, where in-situ environmental parameters and sea surface water samples were collected every month for 1 year of monitoring from November 2018 until December 2019. During the study period, the following three HAB events were reported: the first bloom (Bloom Event 1, BE1) in November 2018, the second bloom (Bloom Event 2, BE2) in July 2019, and the third bloom (Bloom Event 3, BE3) in October 2019, all of which were dominated by Margalefidinium polykrikoides species. Two HAB species, M. polykrikoides and Pyrodinium bahamense var. compressum, found in the BE3 were ten times higher than the previous two bloom events. The measured environmental parameters indicated a similar fluctuation in both bloom and non-bloom events. However, during BE3, the CPAs parameters showed larger values. Based on the 1-year monitoring, the fluctuating trend of the recorded environmental parameters exhibited no discernible pattern during pre- and post-bloom occurrences in the studied area. Chlorophyll-a and CDOM, on the other hand, increased during bloom occurrences as compared to non-bloom readings. Springer Nature Singapore Pte Ltd 2022-02-09 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/33394/1/The%20variation%20of%20environmental%20profiles%20during%20harmful%20algal%20bloom%20in%20Sepanggar%20Bay%2C%20Sabah%2C%20Malaysia.ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/33394/2/The%20variation%20of%20environmental%20profiles%20during%20harmful%20algal%20bloom%20in%20Sepanggar%20Bay%2C%20Sabah%2C%20Malaysia.pdf Diana Lorons and Madihah Jafar Sidik and Nurzaliah Ali and Firas Mohamad Azaini and Kenneth Francis Rodrigues and Wei, Grace Joy Lie Chin (2022) The variation of environmental profiles during harmful algal bloom in Sepanggar Bay, Sabah, Malaysia. Journal of Oceanography, 78. pp. 121-132. ISSN 0916-8370 https://link.springer.com/article/10.1007/s10872-022-00634-9 https://doi.org/10.1007/s10872-022-00634-9
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
language English
English
topic QK504-(638) Cryptogams
spellingShingle QK504-(638) Cryptogams
Diana Lorons
Madihah Jafar Sidik
Nurzaliah Ali
Firas Mohamad Azaini
Kenneth Francis Rodrigues
Wei, Grace Joy Lie Chin
The variation of environmental profiles during harmful algal bloom in Sepanggar Bay, Sabah, Malaysia
description Harmful algal bloom (HAB) events that lead to paralytic shellfish poisoning, fish fatalities, and seawater discolouration have been documented in Sabah’s coastal waters. Studies on nutrient analysis during HAB have been carried out periodically in Sabah’s waters; however, observation on variations of environmental parameters, primarily colour-producing agents’ (CPAs) concentrations, associated with HAB have not been carried out. Hence, this study aims to document environmental parameters and the CPAs over a period of 1 year. The study was conducted along the coastal waters of Sepanggar Bay, Malaysia, where in-situ environmental parameters and sea surface water samples were collected every month for 1 year of monitoring from November 2018 until December 2019. During the study period, the following three HAB events were reported: the first bloom (Bloom Event 1, BE1) in November 2018, the second bloom (Bloom Event 2, BE2) in July 2019, and the third bloom (Bloom Event 3, BE3) in October 2019, all of which were dominated by Margalefidinium polykrikoides species. Two HAB species, M. polykrikoides and Pyrodinium bahamense var. compressum, found in the BE3 were ten times higher than the previous two bloom events. The measured environmental parameters indicated a similar fluctuation in both bloom and non-bloom events. However, during BE3, the CPAs parameters showed larger values. Based on the 1-year monitoring, the fluctuating trend of the recorded environmental parameters exhibited no discernible pattern during pre- and post-bloom occurrences in the studied area. Chlorophyll-a and CDOM, on the other hand, increased during bloom occurrences as compared to non-bloom readings.
format Article
author Diana Lorons
Madihah Jafar Sidik
Nurzaliah Ali
Firas Mohamad Azaini
Kenneth Francis Rodrigues
Wei, Grace Joy Lie Chin
author_facet Diana Lorons
Madihah Jafar Sidik
Nurzaliah Ali
Firas Mohamad Azaini
Kenneth Francis Rodrigues
Wei, Grace Joy Lie Chin
author_sort Diana Lorons
title The variation of environmental profiles during harmful algal bloom in Sepanggar Bay, Sabah, Malaysia
title_short The variation of environmental profiles during harmful algal bloom in Sepanggar Bay, Sabah, Malaysia
title_full The variation of environmental profiles during harmful algal bloom in Sepanggar Bay, Sabah, Malaysia
title_fullStr The variation of environmental profiles during harmful algal bloom in Sepanggar Bay, Sabah, Malaysia
title_full_unstemmed The variation of environmental profiles during harmful algal bloom in Sepanggar Bay, Sabah, Malaysia
title_sort variation of environmental profiles during harmful algal bloom in sepanggar bay, sabah, malaysia
publisher Springer Nature Singapore Pte Ltd
publishDate 2022
url https://eprints.ums.edu.my/id/eprint/33394/1/The%20variation%20of%20environmental%20profiles%20during%20harmful%20algal%20bloom%20in%20Sepanggar%20Bay%2C%20Sabah%2C%20Malaysia.ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/33394/2/The%20variation%20of%20environmental%20profiles%20during%20harmful%20algal%20bloom%20in%20Sepanggar%20Bay%2C%20Sabah%2C%20Malaysia.pdf
https://eprints.ums.edu.my/id/eprint/33394/
https://link.springer.com/article/10.1007/s10872-022-00634-9
https://doi.org/10.1007/s10872-022-00634-9
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score 13.211869

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