Sediment Characteristics and Benthos Community Spread in Lake Beratan in Bali

DOI

10.2991/icge-16.2017.15How to use a DOI?

Keywords

Lake Beratan, sediment characteristics, total organic matter benthos community

Abstract

Lake Beratan is now under a high pressure of both natural and nonnatural processes, having a high level of sedimentation, domestic waste pollution and substantial fish farming using floating baskets (karamba jaring apung/KJA).Changes that are taking place in Lake Beratan environment which are caused by sedimentation will have a real impact on benthos community. This study was aimed to evaluating sediment characteristics in Lake Beratan and identify benthos community spread. This study used a descriptive quantitative approach with a survey method in which 6 lake water samples were selected. The parameters of water quality measured were dissolved oxygen content, temperature, turbidity, conductivity, pH, and total organic matter. The lake sediment characteristics were determined based on total organic matter grain fraction and their organic C/N ratio. The quality of Lake Beratan water shows a pH that tends to be based, turbidity ranges from low to high, and the total organic matter is relatively high. The characteristics of the sediment are dominated by silt and clay fractions, with the total organic matter content ranging from 12.6 to 19.6%, and their organic C/N ratio is relatively low (< 20). Eleven benthos organism varieties were found consisting of Oligochaeta, Diptera and Mollusca with the abundances ranging from 284 to–3409 ind/m2. The presence of Tubificid and surface Chironomid dominated benthos community parallel to their high total organic matter in Lake Beratan sediment.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Dewa Made Atmaja
AU  - MTh. Sri Budiastuti
AU  - Prabang Setyono
AU  - Sunarto Sunarto
PY  - 2016/11
DA  - 2016/11
TI  - Sediment Characteristics and Benthos Community Spread in Lake Beratan in Bali
BT  - Proceedings of the 1st International Conference on Geography and Education (ICGE 2016)
PB  - Atlantis Press
SP  - 76
EP  - 80
SN  - 2352-5398
UR  - https://doi.org/10.2991/icge-16.2017.15
DO  - 10.2991/icge-16.2017.15
ID  - MadeAtmaja2016/11
ER  -