Robert Stuebing

A pen-tailed tree shrew ( Ptilocercus lowii ) specimen was live-trapped in 2006 in an Acacia plantation for the first known time at Samarakan Planted Forest Zone (PFZ) in Bintulu, Sarawak. However, its lack of recurring in other Acacia plantations suggests that the monoculture agricultural field is not a typical habitat for this species. Live-trapp...

A study of the distribution, abundance and diet of the critically endangered Siamese crocodile (Crocodylus siamensis) was undertaken during 2010 and 2011 in the Mesangat wetland, East Kalimantan, Indonesia. It provides the first hard data concerning the ecology of the species outside of mainland Indochina. Crocodiles were captured if possible, weig...

Although featured in many international zoo collections for decades, little was known about the natural history of Sunda gharial Tomistoma schlegelii until recently. Zoos rarely keep large individuals and breeding success has been low. As late as 1998, even though most conservationists regarded the conservation status of the species as Endangered,...

In this paper, we use the Verhulst logistic equation to model the population dynamics of a bearded pig population in a logged-over planted forest in Sarawak, Borneo Island. Using available information on the population, we generate a set of potential growth data for a pair of adult bearded pigs. Based on the data, we obtain two parameters of the lo...

Plantations of exotic trees for industrial and agricultural purposes are burgeoning in the tropics, and some of them offer the opportunity to study community ecology of animals in a simplified forest setting. We examined bird community assembly in different aged groves of the industrial tree mangium (Acacia mangium) at two plantations in Malaysian...

With the rapid conversion of tropical forests in Asia to plantation forests for timber or biofuel production there is a need to determine if these forests serve any viable role in wildlife conservation. We used infra-red trip cameras to survey for large terrestrial mammals within an Acacia/secondary forest matrix being created for pulpwood producti...

One hundred fi fty four species of frogs have been recorded from Borneo and the number continues to grow. In this paper we describe two new species, Ansonia echinata and Pelophryne saravacensis (Bufonidae), and a new form of bufonid tadpole. In addition we report on a signifi cant range extension for Meristogenys whiteheadi (Ranidae) and ecological...

A series of camera trapping surveys was done in and around an Acacia plantation in central Sarawak to monitor wildlife populations within the planted forest. The study area was divided into 1 km 2 blocks with two cameras placed in each block for thirty days at each position, and placed in five study areas for a period of approximately six months. C...

The identity of the tadpole of Rana glandulosa Boulenger, a lowland species of frog widely distributed in Malaysia and Sumatra, Indonesia, has been uncertain. In this paper we show by means of molecular identification that tadpoles collected from Sarawak belong to Rana glandulosa Boulenger. These tadpoles have slender bodies, glands in three conspi...

Tomistoma schlegelii the "False Gharial" (Müller, 1838) is one of the largest yet least-known of the world's 23 crocodilian species, restricted to Indonesia and Malaysia. We compiled and mapped 210 records and overlaid these against geological river systems and current vegetation, in order to assess historic and current distribution, relationship t...

A record of the water quality and fish fauna composition of the Luagan Rompong oxbow lake of the Padas River near Beaufort, the Kalandaun and Kalananap oxbow lakes of the Kinabatangan River at Sukau is presented in this study. The water quality of all three oxbow lakes exhibited wide daily variation in dissolved oxygen content (3.9-12.4 mg L<sup>-1...

The interspecific relationships and biogeography of seven southeast Asian tree shrew species in the genus Tupaia were examined by DNA hybridization and multivariate morphometric analysis. Urogale everetti served as the outgroup. DNA hybridization data indicate that T. tana is most closely related to T. tnontana, and they form a clade with T. minor....

Recent fieldwork in Borneo has revealed that Opisthotropis typica, known previously only from Mt. Kinabalu, Sabah and Mt. Mulu, Sarawak, occurs in the lowlands below 300 meters asl in both Sabah and Sarawak. These records and the characteristics of the new specimens are discussed. Trimeresurus sumatranus malcolmi from Mt. Kinabalu was first describ...

Two new species of frogs, Philautus refugii and Pelophryne rhopophilius, are described from the Lanjak-Entimau Wildlife Sanctuary, Sarawak. Both new species, which are in different families, are members of genera in which separation of intra-and interspecific variation has been difficult. The new taxa are based on samples that help distinguish betw...

A total of 14 spotlight surveys were carried out from January 1992 to February 1993 along 37 km of the Klias River in north-western Sabah, Malaysia. Surveys were at low tide between 1900 and 0600 h from a survey boat at 15 km h−1 by two observers. A total of 221 sightings were made, which varied between 2 and 29 per survey (mean 15.8). A total of 5...

Samples of frogs from various localities in Sarawak and Sabah contain two new species, which we describe here as Megophrys dringi and Philautus bunitus. These samples also include a specimen of Theloderma, the first record of the genus from Borneo. We present the first description of Leptolalax dringi Dubois, a name based on an abbreviated diagnosi...

Twelve spotlight surveys for the Indo-Pacific crocodile Crocodylus porosus were carried out from June 1987 to July 1988 along an approximately 37-km stretch of the Klias River, Sabah, Malaysia. Crocodiles sighted were divided into three size classes: Class 1 (hatchlings and juveniles <1 m in length; Class 2 (subadults and young adults 1–3 m in leng...

Mining of metals creates a potential source of heavy metal contamination in the environment. An open pit copper mine situated in the Northwest of Sabah, East Malaysia has been known to pollute its surroundings especially with discharges involving heavy metals. Although extensive investigations of heavy metal pollution has been carried out, none of...

Cette etude a pour but de determiner si les bauges du rhinoceros D. sumatrensis peuvent etre des sources potentielles d'elements mineraux. Les echantillons de sols ont ete preleves dans 10 bauges de la Danum valley en Malaisie

A survey of small mammals was made in a tree plantation in Sabah, East Malaysia. Transects within pure plantings of Eucalyptus deglupta, Gmelina arborea, Albizia falcataria , and A. falcataria/Theobroma cacao were compared with a similar transect laid through seven-year-old logged forest near the plantation. A total of 16 small mammal species were...

Reviews the ecology of Crocodylus porosus, its breeding biology, and the frequency of crocodile attacks. Briefly mentions aspects of crocodile management.-R.Land

Camera-trapping in the Sarawak's Planted Forests Project, Bintulu Division, supported by direct observations revealed regular usage of the exotic Acacia mangium plantation by Tangalung Viverra tangalunga, Common Palm Civet Paradoxurus hermaphroditus and Short-tailed Mongoose Herpestes brachyurus, and occasional records of most of the diverse commun...