Diversity and periodicity of marine harmful algae

Loo, Chiu Khai (2005) Diversity and periodicity of marine harmful algae. Universiti Malaysia Sabah. (Unpublished)

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Abstract

Periodicity of marine Harmful Algal Blooms (HABs) is important to study and to understand as it is vital in HAB monitoring to predict the blooms. There were 15 species of harmful algae from two divisions, viz bacillariophyta and pyrrophyta, which can produce toxin or can cause harm to the marine organisms, including Pyrodinium bahamens var compressum. The harmful algal bloom caused by the causative species, Cochlodinium polykrikoides was observed throughout one week (21-27 July 2004) of the study. The bloom did not reappear within the study period. The diversity of marine harmful algal during bloom period was dominated by this causative species and its population achieved the highest density of 1772 + 384 cell/ml on the first day of sampling at station one and the third day at station two. There was no periodicity observed for all marine algal species throughout the bloom period in the coastal water of UMS jetty. Population and density of marine harmful algal was low and fluctuated from August to November. The diversity of harmful algae throughout the four month study was low but increased from August to November at both stations at the UMS jetty. There was no periodicity observed due to irregular fluctuation in population and density of the harmful algal throughout the four month of study. Physical parameters showed no significant relationship with the density of marine harmful algae in this project. Monitoring should continue over longer period to study the periodicity of the HABs in the coastal water around the region. Study on the environmental factors and the inflow of nutrient from the terrestrial that affect the HABs population should be carried on as it stimulates the incidence of harmful algal bloom in the coastal water around Sabah.

Item Type: Academic Exercise
Uncontrolled Keywords: harmful algae, viz bacillariophyta, pyrrophyta, marine organism, toxin
Subjects: Q Science > QK Botany
Divisions: SCHOOL > School of Science and Technology
Depositing User: MDM SITI AZIZAH IDRIS
Date Deposited: 01 Aug 2013 06:47
Last Modified: 23 Oct 2017 07:25
URI: http://eprints.ums.edu.my/id/eprint/6691

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