QE: 23 May 2016, Mon. 10am (Jerome Kok / Asst Prof Darren Yeo) S1A Seminar Room

Department of Biological Sciences, NUS
Qualifying Examination

Investigating dynamics of raphidophyte blooms and their potential for occurring in Singapore coastal waters
Speaker:             Kok Wai Kit, Jerome (Graduate Student, Dept. of Biological Sciences, NUS)
Date:                  23 May 2016, Monday
Time:                  10am
Venue:                S1A Seminar Room (S1A, #02-17)
Supervisor:         Asst Prof Darren Yeo Chong Jinn
Co-supervisor:    Dr Sandric Leong Chee Yew

Abstract: –

Harmful algal blooms (HABs) can lead to deleterious outcomes including human-toxicity. The three commonly causative marine phytoplankton groups are diatoms, dinoflagellates, and raphidophytes. Of the three, the Raphidophyceae group was categorised most recently and is generally not well-understood. Nevertheless, raphidophyte blooms previously resulting in massive fish-kill events have led to increased focus upon such groups. In general, studies have demonstrated the wide tolerance of raphidophytes to a range of environmental conditions. Bloom patterns involving the group have also highlighted overlapping niche conditions, which is referred in the literature as “raphidophyte niche”. However, present understanding about raphidophytes has largely derived from temperate studies, and there is a lack of knowledge regarding tropical conditions. Accordingly, the present work seeks to fill two general gaps. Firstly, present approaches toward understanding HAB outcomes do not account for the presence of a “raphidophyte niche”, indicating a need to expand present conceptual frameworks. Secondly, many studies have observed that raphidophyte blooms coincide with seasonal changes, which is lacking in tropical regions. My present work examines two raphidophyte species isolated from the East Johor Straits, Singapore—Heterosigma akashiwo and Chattonella subsalsa. Current findings highlight matching nitrogen-uptake patterns between temperate and tropical strains. However, the resting-cell stage of Heterosigma akashiwo reported in temperate environments does not seem to be supported under the higher tropical temperatures. Such life-cycle differences may have significant implications for the bloom potential of tropical raphidophyte strains.

 All are welcome


LSM4263 Field Studies in Biodiversity: Registration open!

Dear students

Registration is now open for LSM4263 – Field Studies in Biodiversity! 

This 4MC module will be conducted in Semester IV of AY2015/2016 from Tue 21 Jun 2016 to Fri 22 Jul 2016. Timetable details will be available later.


To qualify, students should be:

  • LSM majors specialising in Environmental Biology (EVB), OR from the Bachelor of Environmental Studies (BES) programme
  • Continuing into their Honors year in AY2016/2017
  • Possess a CAP of 3.2 or above
  • Willing to cover part of the module cost (amounting to less than S$400)

Other details:

  • The Pulau Tioman field trip is scheduled from Tue 12 Jul 2016 – Mon 18 Jul 2016
  • Accommodation at Paya Beach Resort
  • Local student enrolment is limited to 30 students
  • Priority to students with LSM2251 Ecology and the Environment, or other relevant experience

To register, please complete the form at tinyurl.com/lsm4263signup by Mon 06 Jun 2016: 1800h. Successful students will be notified by email.

Best wishes,
Life Sciences Undergraduate Program Committee