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Visiting Scientists - 2001

Anker, Authur
Victor R. Alekseev
Bahir, Mohomed
Benayahu, Yehuda
Chen Hui-Lian
Corlett, Richard
Das, Indraneil
de Pinna, M
Fernando, C.H.
Guinot, Daniele
Jayne, Bruce
Karns, Daryl
Kottelat, Maurice
Larson, Helen
Lheknim, Vachira
Liao, Lawrence
Liu Riu-Yu
Panha, Somsak
Rachmatika, Ike
Rahayu, Dwi Listyo
Schubart, Christoph
Siebert, Darrell
Song Daxiong
Voris, Harold
Wu Sugong
Zettel, Herbert

Mr. Mohomed Bahir

Visit: Sep 3 to 30, 2001

Mr. Mohomed Bahir, a research associate from the Wildlife Heritage Trust of Sri Lanka, was invited to visit the museum from 3 Sep to 30 Sep 2001. Hosted by Dr. Peter Ng of the RMBR, he collaborated on research projects principally involving the study of Sri Lankan freshwater decapod crustaceans, i.e. crabs and prawns.

Bahiršs main collaborators on syetematics and taxonomy during this visit were Dr. Darren Yeo of the RMBR (Sri Lankan and southern Indian freshwater crabs) and Mr. Cai Yixiong of the Department of Biological Sciences (DBS) (Sri Lankan atyiid shrimps).  The intention for this visit was the co-preparation over technical papers on these two groups of animals.  

Having previously published on Sri Lankan freshwater crabs, and having made numerous collections and field observations of these animals, Bahir is well versed with the taxonomy of the group.  The freshwater crab study with Darren is a follow-up of a joint study trip the two made earlier in the year to the Zoological Survey of India, Calcutta, to re-examine the historically significant collections there.  

Yixiong, an experienced atyiid prawn taxonomist, familiarised Bahir with the group, and together, they discovered new genera related to the Caridina.  

Both papers are now in preparation and preliminary findings appear to suggest that the freshwater crab and prawn fauna of Sri Lanka and southern India is far more diverse than previously believed.

Bahir, who studies herptiles as well, went on field trips to Bukit Timah Nature Reserve and Johor with RMBR and DBS staff and students to make field observations of herptiles. During these field trips, he shared his experience and techniques on field studies on the biology of various herptiles, in particular, caecilians, which are very poorly understood in this region, and difficult to find!

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Dr. Lawrence Liao

Visit: Aug-Sep 2001

Dr. Lawrence Liao, a phycologist from University of San Carlos, Cebu, Philippines, whose area of expertise is marine flora, obtained his PhD from University of North Carolina, USA, working on the taxonomy of red algae Rhodophyta.  He was invited to visit the museum on a short-term fellowship from 16 Aug to 15 Sep 2001 to study the marine flora of Singapore, and was hosted by Dr. Benito Tan of the RMBR.  Emphasis was on seaweed (macroalgae), especially red algae.  Sea grass (spermatophytes) diversity was also looked at in some detail.  The main objective of this study was to produce a checklist of marine flora of Singapore.

In addition to studying historical and recent collections of marine flora in our herbarium, Lawrence also made several field trips to various sites all around Singapore to collect fresh material for study.  The sites visited were chosen to represent as broad a spectrum of habitats and area in Singapore as possible, such as rocky shore at Labrador Beach in the south, and Chek Jawa on Pulau Ubin in the north; mangroves in Pandan river in the south, Jalan Bahtera in the west, and Sungei Buloh and Pasir Ris in the north; sandy beaches at Changi in the east; coral reefs at Raffles Lighthouse and Pulau Hantu in the south.  Diving, low-tide intertidal walks and even leaning over precariously to collect from the underside of floating wharves were some of the ways in which he collected his samples.

Preliminary findings from his study, indicate that despite the degraded state of some of the sites visited, there appears to be a remarkable diversity of marine algae and sea grasses, yielding new species records for Singapore, as well as species considered endangered or even extinct in some Southeast Asian localities, and species deemed economically and biologically important.

In addition to the primary objective of preparing a technical publication on local marine flora, Lawrence also contributed to other related projects.  Lawrence’s identification of healthy populations of rare sea grasses, Halophila spinulosa and H. beccarii, and macroalgae, Caulerpaspp.,at Chek Jawa in Pulau Ubin, contributed to raising overall awareness of the value of that area as one of the last remaining extensive sea grass and mud flat areas in Singapore.

Collaboration was also initiated between Lawrence and Dr. Hugh Tan of the RMBR on the possible production of a popular guidebook in the Science Centre/BP series on the marine flora of Singapore, which they hope to complete this by 2002.  Lawrence also began collaborating with Dr. Shawn Lum of the NTU on publishing a technical checklist of the marine algae of the South China Sea.

Despite his packed field and lab schedule, Lawrence still found time to conduct a seminar at a session of the Biodiversity and Ecology Journal Club of the Department of Biological Sciences (DBS).  The seminar, entitled “A re-acquaintance with the seaweeds of Singapore, including notes on some interesting elements of the local marine flora”, and held on 12 Sep 2001 at the DBS Conference Room, gave Lawrence the opportunity to present his preliminary results, as well as to impart some basics of field identification and preservation techniques of seaweed.

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Harold Voris (Chicago Field Museum)
Daryl Karns (Hanover College)
Bruce Jayne (University of Cincinnati)

Harold Voris (Chicago Field Museum)

Daryl Karns (Hanover College)

Bruce Jayne (University of Cincinnati)

Ecology of mangrove homalopsine snakes

Visit: February-May 2001

These three scientists were hosted by Dr Peter Ng and Mr Kelvin Lim of the museum, with permission from the National Parks Board to work on the mangrove homalopsine snakes of Singapore. Aided by local volunteers, they were tracking the snakes with radio transmitters to ascertain their movements and ecology; as well as determining their diets and habitat preferences. In addition to the common dog-faced water snake, Cerberus, the scientists also worked on three rare species, Fordonia, Gerardia and Cantoria. The study is a milestone as these snakes are poorly known and the latter three genera, at least until this study, were regarded as rare to very rare! They will be returning in September 2001 to carry out the second phase of their study!

***To see video clips of vertebrate movement, visit Professor Bruce Jayne's website

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