Kenyir dam: The effecfs of breeding habit on (Batagur baska) in Sungai Terengganu, Terengganu

Yusof, Ebil (1999) Kenyir dam: The effecfs of breeding habit on (Batagur baska) in Sungai Terengganu, Terengganu. [Journal / Magazine]

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Abstract

The study attempted to determine the effect of breeding habit on river terrapins (Batagur baska) as a result of damming the upper stream of Sungai Terengganu. This study area covered the locations of Pasir Petasih, Pasir Temir, Pasir Lubok Kawah and Pasir Tinggi of Sungai Terengganu from January 1992 to June 1992. From a reconnaissance survey, it was found that the terrapins had adopted a new breeding area along Sungai Terengganu due to the construction of a Kenyir Dam that led to the alteration of the quality of the sandbanks. This breeding areal consisted of sandbanks at Pasir Temir, Pasir Lubok Kawah and Pasir Tinggi. The factor that influenced terrapins to shift from fonner breeding area (i.e., Pasir Petasih, Pasir Temir and Pasir Lubok Kawah) to a later breeding area was due to the drastic change in the quality of fonner habitat (i.e., from a desired condition to a very poor condition). One hundred and twenty respondents were interviewed to reflect the past experiences of sightings the landing and nesting in the past season between 1983-1992. The percentage of landing decreased from 57.5% during Nonnal period to 30.8% during Stable period for Location A (pasir Petasih), Location B (Pasir Temir), and Location C (Pasir Lubok Kawah). The finding was further supported by the percentage of sighting of terrapin as "Less" during the Stable period with 61.5%. However, sighting as "Increased" of terrapins nesting between Normal and Unstable periods was decreased from 49.2% to 30.8%.

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