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Journal : Ecotrophic, Journal of Environmental Science

MORFOMETRI DAN KARAKTERISTIK FISIK TUMISI (Amphidromus peversus) DARI KAMPUS UNIVERSITAS UDAYANA BUKIT JIMBARAN, BALI-INDONESIA N. W. Sudatri; N. M. Suartini; A. A. G. Raka Dalem
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 2 No 2
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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Abstract

A study on mollusks (Amphidromus peversus) has been carried out on Udayana University, BukitJimbaran (Bali, Indonesia) campus between November, 2003- November, 2005. The study was undertakenon a secondary forest on a limestone dry soil with dominant vegetation of Glerecydium sepium, Lantanacamara, Ceiba pentranda, and Acasia auriculiformis. Samples were randomly taken on quadrate samplings.Mollusks were captured on the land surface or on living vegetations. Results of the study showed that A.peversus has an average of shell length of 27.9 mm, shell width 18.0 mm , and body weight 7.90 g, number ofshell whorls 5.3, with the proportion of direction of whorl to the right of 55.3%. The shell of A. peversus hasno operculum. The color of the shell was yellow with brown stripes.The relationship between shell length (X) and with body weight (Y) can be represented by theequation of Y = 0.473 X – 5.32 (R2 = 11.9 %), which showed week relationships between those parameters.Meanwhile the relationships between the shell length (X1), width (X2) and body weight (Y) was best fitted bythe following equation : Y = 0.289 X1 + 0.0140 X2 – 3.47 (R2 = 94.9%).
MAKROZOOBENTHOS DI TUKAD BAUSAN, DESA PERERENAN, KABUPATEN BADUNG, BALI NI MADE SUARTINI
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 5 No 2
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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Abstract

A macrozoobenthos study was conducted at Bausan River, Pererenan village, Badung regency, Bali between September and December, 2006. Samples of macrozoobenthos were taken on transect methods. Six sampling stations were determined purposively. At each station, five unit of square plots of 40 cm x 40 (in maximum solum depth) samples were taken. The result showed that there were seventeen species of macrozoobenthos were found. There was no protected species found in this study. The macrozoobenthos had a medium level of index diversity of 2.28. This indicated that the ecosystem at this area was in a stable condition with a medium level of macrozoobenthos diversity.