FLUKTUASI CURAH HUJAN DAN KOMUNITAS SERANGGA DI HUTAN TROPIS TAMAN NASIONAL GUNUNG HALIMUN*[Fluctuation of rainfall and insect community in a tropical forest, Gunung Halimun National Park]

Sih Kahono, Woro A Noerdjito
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Abstract

Study on fluctuation of rainfall and insect community was conducted in a tropical forest, Gunung Halimun National Park. Ten years rainfall data was available to discuss their fluctuations. Rainfall was relatively non-seasonal with high number of almost entire monthly rainfalls.Although fluctuation of rainfall in GHNP did not show clear seasonal trend, however appearance of less rainfall showed from June to September. There were several slight fluctuations in the number of rainfalls from a month to another and some time showed major and minor peaks. Monthly dry months had never reached 0 mm. In ordinary years, only one-month drought occurred in July 1991 (90 mm) and December 2000 (8 mm). Strong drought occurred only during El Nino of 1994 and 1997, which have 3 to 4 dry months. Fluctuation of insect community was studied from March 2000 up to February 2001. Two insect collection methods were applied by setting up light traps and pitfall traps. Total individual of each order of insect counted monthly and to be compared one to another. Changing the number of monthly individual of each order was interpreted to the number of monthly rainfall in order to analyze the relation of changing of the number of rainfall and the individual of each order of the insect collected. Fluctuation of the number of monthly rainfall was synchronous to the number of insect community collected by light traps (night flying insect) but tend to opposite to the number of insect collected by pitfall traps (ground insect).

Keywords

Fluktuasi curah hujan, komunitas serangga, light trap, pitfall trap, Taman Nasional Gunung Halimun.

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References

Adikerana A and Komeda S. 1997. Altitudinal Distribution of Birds in GHNP. In: Research and Conservation of Biodiversity in Indonesia vol. II. The Inventory of Natural Resources in GHNP. Pp 94-103.

Cammell ME and Knight JD. 1992. Effects of Climatic Change on the Population Dynamics of crop pests. In: Advances in Ecological Research, 22, 117-162.

Inoue T and Nakamura K. 1990. Physical and Biological Background for Insect Studies in Sumatra. In: Natural History of Social wasps and bees in Equatorial Sumatra (Eds. Sh. F. Sakagami, R. Ohgushi, and W. Roubik) Hokkaido University Press, Sapporo, Japan. 274 pp.

Inoue T, Nakamura K, Salmah S and Abbas I. 1993. Population Dynamics of Animals in Unprictably Changing Tropical Environments. Journal of Biosciences 18, 425-455.

Kahono S. 1996. Population Dynamics of Epilachna vigintioctopunctata (Coccinellidae: Epilachninae) in Seasonal Climate of East Java. Master thesis. Kanazawa University Japan.

Kahono S. 1999. Ecology of Phytophagous Ladybird Beetle in Indonesia: with Special References on the Population Dynamics in Java. PhD thesis. Kanazawa University. Japan.

Kahono S dan Arief AJ. 2002. Kegiatan Penelitian Keanekaragaman Hayati di Taman Nasional Gunung Halimun (TNGH): Kerjasama LIPI-PHKA-JICA. Worksop Review BCP-JICA, Hotel Peninsullla, Slipi Jakarta 28 Januari 2002. 10 hal.

Langvatn R, Albon SD, Burkey T and Clutton- Brock TH. 1996. Climate, plant Phenology and Variation in age of first Reproduction in a Temperate Herbivore. Journal of Animal Ecology, 65: 653-670.

Nakamura K, Noerdjito WA, Hasyim A. 1994. Regional Difference and Seasonality of Rainfall in Java, with Special Reference to Bogor. Tropics 4 (1), 93-103.

Richards OW and Southwood TRE. 1968. The Abundance of Insects: Introduction. In Southwood, TRE (Editor). Insect abundance. Pp. 1-7.

Simbolon H and Mirmanto E. 1997. Altitudinal Zonation of the Forest Vegetation in GHNP, West Java. In Research and Conservation of Biodiversity in Indonesia vol. II. The Inventory of Natural Resources in GHNP. Pp. 14-35.

Toda MJ and Kitching RL (Eds.). 1999. Forest Ecosystems: the Assessment of Plant and Animal Biodiversity in Forest Ecosystems. The Manual. IBOY 95 pp.

Walsh RPD. 1996. Drought Frequency Changes in Sabah and Adjacent parts of Northern Borneo since the Late Nineteenth Century and Possible Implications for Tropical Rainforest Dynamics. Journal of Tropical Ecology 12, 385-407.

Wernstedt FL. 1972. World Climatic Data. Lemont, Penn.: Climatic data Press 523 pp.

Whitmore TC. 1984. Tropical Rain Forests of the Far East. 2nd. Ed. Clarendon Press, Oxford.

Willmer PG. 1982. Microclimate and the Environmental Physiology of Insects. In Advances in Insect Physiology. 1-57.

Wiriadinata H. 1997. Floristic Study of GHNP. Research and Conservation of Biodiversity in Indonesia vol. II. The Inventory of Natural Resources in GHNP. Pp. 7-13.

Wolda H. 1978. Seasonal Fluctuations in Rainfall, food and Abundance of Tropical Insects. Journal of Animal Ecology 47, 369-381.

Wolda H and Frank WF. 1981. Seasonality of Tropical Insects. II. Blataria in Panama. Journal of Animal Ecology 50, 827-838.

Wolda H and Broadhead E. 1985. Seasonality of Psocoptera in two Tropical Forests in Panama. Journal of Animal Ecology 54, 519-530.

Wolda H. 1988. Insect Seasonality: Why? Annual Review of Ecological Systematics 19, 1-18.


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