Daya Dukung dan Laju Pertumbuhan Microcystis Hasil Isolasi dari Waduk Sutami pada Berbagai Variasi Konsentrasi Nitrat dan Fosfat dalam Medium Selektif B-12

Authors

  • Catur Retnaningdyah
  • Suharjono Suharjono
  • Agoes Soegianto
  • Bambang Irawan

DOI:

https://doi.org/10.24002/biota.v15i3.2590

Keywords:

Microcystis, B-12 medium, nitrate and phosphate, Sutami Reservoir

Abstract

The main objective of this research was to calculate the carrying capacity and growth rate of
isolated Microcystis result in Sutami reservoir on a variety of nitrate and phosphate
concentrations in the B-12 selective medium. Research was conducted in the laboratory with
pure experiments using completely randomized factorial design with factors of nitrate
concentration variation (8, 16, 32, and 64 ppm) and phosphate (0.2, 0.4, 0.8 and 1.6 ppm) in B-12
medium. Repetition of the study was conducted three times at the same time. Microcystis
population abundance which was counted every day until the stationary phase (day +30) was
used to calculate the rate of growth (β) and maximum abundance of Microcystis can be
supported by each medium treatment (γ). The results showed that the growth rate of Microcystis
was not significantly influenced by levels of phosphate in the medium but significantly positively
correlated with increasing nitrate concentration in the medium. Carrying capacity or the
maximum abundance (γ) of Microcystis was influenced by the combination of nitrate and
phosphate in the B12 medium. Concentration of phosphate 0.4 ppm in medium combined with
nitrate 8−64 ppm could support the highest abundance of Microcystis.

Downloads

Published

15-10-2019

How to Cite

Retnaningdyah, C., Suharjono, S., Soegianto, A., & Irawan, B. (2019). Daya Dukung dan Laju Pertumbuhan Microcystis Hasil Isolasi dari Waduk Sutami pada Berbagai Variasi Konsentrasi Nitrat dan Fosfat dalam Medium Selektif B-12. Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati, 15(3), 354–362. https://doi.org/10.24002/biota.v15i3.2590

Issue

Vol 15, No 3 (2010): October 2010

Section

Articles

License

Authors who publish with Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati agree to the following terms:

  • Authors retain copyright and grant the Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati right of first publication. Licensed under a Creative Commons Attribution-NonCommercial 4.0 International License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
  • Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati, and as long as Author is not used for commercial purposes.