Environmental Parameters and Razor Clam Fisheries in Bako, Kuching, Sarawak
This study was carried out to determine the water quality parameters at razor clam producing area of Bako and to obtain information about the fisheries of razor clams in Bako. Two field samplings were undertaken; the first sampling was on 6`h December 2006 and the second sampling was on 6th Februa...
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| 主要作者: | |
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| 格式: | Final Year Project Report |
| 語言: | English |
| 出版: |
Universiti Malaysia Sarawak (UNIMAS)
2007
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| 主題: | |
| 在線閱讀: | http://ir.unimas.my/id/eprint/27761/2/Ollince%20Tateh.pdf http://ir.unimas.my/id/eprint/27761/ |
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| 總結: | This study was carried out to determine the water quality parameters at razor clam producing area of Bako and
to obtain information about the fisheries of razor clams in Bako. Two field samplings were undertaken; the
first sampling was on 6`h December 2006 and the second sampling was on 6th February 2007. Five stations
were selected for each sampling site for water quality analysis. The parameters that were taken in-situ were temperature (ranged 26.9 ± 0.05 °C to 28.2 ± 0.08 °C), pH (ranged 7.25 ± 0 to 7.35 ± 0.08), conductivity (24.36 t 0.013 itS/cm), dissolved oxygen (ranged 6.13 ± 0.18 ppm to 8.56 ± 2.39 ppm), turbidity (ranged
67.89 f 1.57 to 301.73 ± 8.03 FTU), salinity (ranged 9.2 ± 1.79 to 20.0 ± 0 PSU), transparency (ranged 6.0 ±
0.71 to 23.7 ± 2.15 cm), TDS (12.1 ± 0.02 mg/1), and NaCI (49.32 ± 0.08 mg/1) while for ex-situ were
chlorophyll a (ranged 2.04 f 0.48 to 4.04 ± 1.44 µg/1), TSS (ranged 10.65 ± 2.74 to 30.36 ± 6.39 mg/1), BOD5
(ranged 2.68 t 0.05 to 5.67 t 0.20 ppm), and nutrients (orthophosphate, ranged 0.033 ± 0.013 to 0.134 f 0.115
mg/I; ammonia, ranged 0.079 ± 0.037 to 1.673 ± 0.327 mg/l; silicate, ranged 1.311 ± 0.325 to 1.971 ±
0.320mg/I; nitrate, ranged 0.033 ± 0.006 to 0.083 ± 0.011 mg/l; and nitrite, ranged 0.015 ± 0.002 to 0.038 ±
0.107 mg/I). There were several factors that influence the difference in the values of parameters between the
two months. These factors include the weather condition, location of sampling sites, tidal regime and
anthropogenic activities from the nearby villages. Fisheries survey shows that the common technique that was
practiced by the harvesters in Bako is using `lidi' stick and lime. Species that are found in Bako are Solen
regularis, Solen sarawakensis, and Solen digitalis. This study found that the water quality in Bako is still
sustainable for the growth of razor clams. |
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