Vertical Distribution of Dissolved Oxygen Concentration at  The Sea Pearl Cultivation Development Site, West Lombok,  Nusa Tenggara Barat

Iis Triyulianti

doi:10.21534/ai.v23i1.279

Vertical Distribution of Dissolved Oxygen Concentration at The Sea Pearl Cultivation Development Site, West Lombok, Nusa Tenggara Barat

Iis Triyulianti

Abstract

Titrimetric method or Winkler Methode was applied to determine dissolved oxygen (DO) in sea waters of The Sea Pearl Cultivation Developement Site, West Lombok during southeast monsoon of June 2021. The samples were taken in three (3) different location (Gili Gede, Gili Genting and Autorei) of the cultivation site at Sekotong waters, West Lombok, Nusa Tenggara Barat. Measurement results of physical parameters at those locations were characterized with salinity was ranging at 31.9 - 32.3 PSU, temperature was ranging at 28.4 – 29.7 ⁰C. The concentration of dissolved oxygen measured by titration method is ranging from 3.4 - 5.2 mg / L. High oxygen content is found in the water column with a depth of 25 m or below the layer of the aquatic column where sea shell pearls are developed or cultivated. This condition indicates that the presence of cultivated sea shell pearls has utilized dissolved oxygen in the process of respiration and oxidation of organic matter. Dissolved oxygen becomes an important abiotic factor for ecosystems that support the sustainability of marine life and marine aquaculture development efforts.

Keywords

Nusa Penida, production, seaweed, water quality, satelite image

Full Text:

PDF

References

Asfin, (2000). Sejarah Usaha Budidaya Mutiara di Provinsi Nusa Tenggara Barat. https://dislutkan.ntbprov.go.id/wp-content/uploads/2020/07/SEJARAH-USAHA-MUTIARA-DI-NTB-OK-UPLOAD.pdf

Aunurohim, F. (2013). Kajian Komposisi Fitoplankton dan Hubungannya dengan Lokasi Budidaya Kerang Mutiara (Pintada Maxima) di Perairan Sekotong, Nusa Tenggara Barat. Jurnal Teknik Pomits, 2(1) : 1 – 6.

Breitburg, D.L., Hondorp, D. W., Davias, L. A. and Diaz, R. J. (2009) Hypoxia, Nitrogen and Fisheries: Integrating Effects Across Local and Global Landscapes. Annual Reviews in Marine Sciences, 1, 329–49.

Breitburg, D., Levin, L.A., Oschilies, A., Gregoire, M., Chave, F. P., Conley, D.J. et al. (2018) Declining oxygen in the global ocean and coastal waters. Science, 359, eaam7240

Dinas Kelautan dan Perikanan. (2014). LaporanTahunan. Dinas Kelautan dan perikanan

Diaz, R.J. and Rosenberg, R. (2008) Spreading Dead Zones and Consequences for Marine Ecosystems. Science, 321(5891), 926–929.

Fieux M. R, Molcard, R., &Illahude, A. G. (1996).Geostrophic transpor of the Pacific-Hindianoceans throughflow. J Geophys. Res. 101(C5):12.421-12.432.

Gilbert, D., Rabalais, N. N., Díaz, R. J., and Zhang, J. (2010) Evidence for greater oxygen decline rates in the coastal ocean than in the open ocean, Biogeosciences, 7, 2283–2296

Grasshoff, K. (1976). Methods of Seawater Analysis. VerlogChemieWeinhem. New York.

Hutagalung, H. P., Setiapermana, D., & Riyono, S. H. (1997). MetodeAnalisis Air Laut, Sedimendan Biota. Bukukedua. Jakarta: P3O-LIPI. 75-79.

Hendrianti, A.,D.Y.N. Kurniadi, A. Heriati. (2018). Kajian Hidrodinamik Bagi Pengembangan Budidaya Laut di Sekotong, Nusa Tenggara Barat. JurnalTeknik

Hamzah, F.dan M. Trenggono. (2013). OksigenTerlarut di Selat Lombok. JurnalKelautanNasional, 9(1), 21-35

Mahaffey, C., Palmer, M., Greenwood, N. and Sharples, J. (2020) Impacts of climate change on dissolved oxygen concentration relevant to the coastal and marine environment around the UK. MCCIP Science Review 2020, 31–53

Parsons, T. R., Yoshiaki, M., &Lalli, C. M. (1984). A Manual of Chemical and Biological Methods for Seawater Analysis. Pergamon Press, New York.

Susanto, R. D., Gordon, A. L., & Sprintall, J. (2012). Observations and proxies of surface layer throughflow in Lombok Strait. J. Geophys. Research, 112.

Tyagi, S., B. Sharma, P. Singh, R. Dobhal. (2013). Water Quality Assessment in Terms of Water Quality Index. American Journal of Water Resources. 1 (3), 34-38

Townhill, B.L., van der Molen, J., Metcalfe, J.D., Simpson, S.D., Farcas, A., and Pinnegar, J.K. (2017a) Consequences for climate-induced low oxygen conditions for commercially important fish. Marine Ecology Progress Series, 580, 191–204.

Townhill, B.L., Pinnegar, J.K., Righton, D.A. and Metcalfe, J.D. (2017b) Fisheries, low oxygen and climate change: how much do we really know. Journal of Fish Biology, 90, 723–750.

Vaquer-Sunyer, R. and Duarte, C.M. (2008) Thresholds of hypoxia for marine biodiversity. Proceedings of the National Academy of Sciences, USA, 105(40), 15,452–15,45

DOI: http://dx.doi.org/10.21534/ai.v23i1.279