The area studied lies between 18 and 24 km south of samarinda along either side of the road to Balikpapan, between Universal Transverse Mercator (UTM) coordinates 9934 in the north, 9928 in the south, 0509 in the west and 0514 in the east; and comprises an area of approximately 30 square kilometer (Figs. 1,5 and 19). The area was selected on the bas…