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Properti Nilai
Judul Hydrological regimes and zooplankton ecology at Tempe Floodplains, Indonesia: preliminary study before the operation of the downstream barrage
Penulis Toruan, R. L., F. Setiawan
Jenis Terbitan JURNAL
Nama Terbitan International Forum on Asian Water Environment and Technology
Volume/No/Halaman   0/0/0
Kota Penerbit
Abstrak Lake Tempe is a floodplain lake of a national importance situated in South Sulawesi, Indonesia,which experience hydrological variation during dry and wet seasons. Study on hydrological regimes and their association withzooplankton ecology was done to asses the hydrological characteristics and their relationship to zooplankton ecology. Field study and zooplankton sampling were carried out during two seasons (dry and wet seasons) representing hydrological variations of the floodplain. Rotifers were found to be dominant zooplankton during low water (LW) period while micro crustaceans were predominant in high water (HW) period. Number of species and total abundance were higher in LW compared to HW. Drying and wetting period of a floodplain system provide habitat for micro biota as well as enhance fish recruitment by providing suitable spawning environment and habitat for larvae. The operation of downstream barrage was intended to maintain water level at 5 meter ASL (3 meter water depth) which will potentially disrupt the succession processes of zooplankton community from LW to HW. In this paper, we show that high water phase tend to homogenized the habitats within the systems while during low water period, more diverse species were found between sampling site. We suggest that water level regulation by the operation of the barrages will then affect the diversity of zooplankton and ecosystem of the lake. Further study is essential mainly to compare the ecological integrity of the floodplain systems after the downstreambarrage is being operated


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