THE MACROBENTHIC ANIMAL COMMUNITY OF SITU SANGIANG SUKARAJA, TASIKMALAYA - WEST JAVA
<b>Abstrack</b><p align="justify">A study on the macrobenthic animal community in Situ Sangiang, a small lake at Sukaraja, Tasikmalaya - West Java had been conducted, based on five observations and two-weekly intervals from September 6th to October 31st 1992. Macrobenthic...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/4494 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | <b>Abstrack</b><p align="justify">A study on the macrobenthic animal community in Situ Sangiang, a small lake at Sukaraja, Tasikmalaya - West Java had been conducted, based on five observations and two-weekly intervals from September 6th to October 31st 1992. Macrobenthic animals were sampled using an Ekman grab (0.15 m x 0.15 m) at nine fixed stations which were spread out at nine fixed sites, of different depths over the lake. The abiotic enviromental factors measured are water temperature, dissolved oxygen, depth, pH and sediment properties (particle composition, organic content and detritus content). A total of 12 species of macrobenthic animals were encountered during this study (two species of gastropods, six species of insects, two species of oligochaetes, one species of nematodes, and one species of crustaceans). Chironomus sp., Chaoborus sp., and Branchiura soHerbyi were found to be the predominant macrobenthic animal species. Indices of diversity (H`) of the macrobenthic animal communities at the observed sites vary in space and time, and were affected by depth, dissolved oxygen, organic content, detritus content, silt, and clay content of the sediment. Stepwise Multiple Regresion Analysis, indicated that abiotic environmental factors which affect each macrobenthic taxon were relatively similar, namely depth, dissolved oxygen, sediment properties (organic content, detritus content, and composition particle of sediment), and temperature. The different peaks of population abundance and biotic interactions between the species appear to play an important role in determining the structure of the macrobenthic communities and regulating the spatial and temporal distributions of the macrobenthic animals. Between sites similarities of the macrobenthic animals communities were also discussed. |
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