Keragaman Plankton dan Kondisi Perairan Tambak Intensif dan Tradisional di Probolinggo Jawa Timur
Abstrak: This study aims to
estimate the wealth and stability of traditional and intensive brackishwater
pond waters through biological index calculation (diversity, uniformity and
dominance of plankton) in traditional and intensive brackishwater pond waters
of Probolinggo Regency, East Java Province. Sampling plankton and water from
the site, considered to represent the diversity of plankton and water stability
of traditional and intensive brackishwater pond. Plankton was collected using a
plankton net no. 25, then preserved using 1% lugol solution. Measurement of
water quality variables include temperature, salinity, dissolved oxygen and pH,
whereas the laboratory analyzes that Total Organic Matter (TOM), NO2, NO3, NH3,
PO4, Total Suspended Solids (TSS), and Fe. Plankton identification using
microscope and calculation with cell counting method. The results of analysis
of plankton in intensive brackishwater pond waters are obtained as much as 23
genera consisting of 16 genera of phytoplankton were included into three
classes, namely Bacillariophyceae as much as 5 genera, Cyanophyceae 3 genera,
Dinophyceae and Chlorophyceae, each of the four genera, whereas zooplankton
consisting of 7 genera are included into two classes, namely Crustaceae 6
genera and Rotatoria 1 genus. In traditional brackishwater pond earned as much
as 13 genera consisting of 8 genera of phytoplankton were included into
Bacillariophyceae 5 genera, Cyanophyceae 2 genera, and Dinophyceae 3 genera,
whereas zooplankton consisting of three genera are included into class
Crustaceae 2 genera and Rotatoria 1 genus. Plankton abundance in intensive
brackishwater pond ranges 702 - 4269 ind./L, diversity index of 0.26 -2.38,
uniformity index of 0.10 - 1.5, and dominance index of 0.02 - 0.68. In
traditional brackishwater pond have an abundance of plankton range 134 - 776
ind./L, diversity index of 0.10 - 1.97, uniformity index of 0.08 - 1.0, and
dominance index of 0.01 - 0.75. Traditional and intensive brackishwater pond
waters condition still within the limits that can be tolerated by the culture
organism. Based on the index value of biological, diversity of genus in the
intensive brackishwater pond is relatively higher than traditional
brackishwater pond and the community stability moderate, whereas traditional
brackishwater pond unstable. On average, the uniformity of the genus in
both brackishwater ponds are relatively
evenly and genus of plankton to dominate the others genus.
Kata Kunci: diversity of
plankton, waters condition, traditional and intensive brackishwater pond,
Probolinggo Regency
Penulis: Utojo
Kode Jurnal: jpbiologidd150867
