Journal of Marine Research
Vol 15, No 3 (2026): Journal of Marine Research

Analysis of Nitrogen Concentration and Distribution in Galesong Waters, Takalar Regency, South Sulawesi.

Nur Halizah Roebetho (Departemen Perikanan, Fakultas Ilmu Kelautan dan Perikanan, Universitas Hasanuddin)
Putri Sakinah Resman (Departemen Perikanan, Fakultas Ilmu Kelautan dan Perikanan, Universitas Hasanuddin)
Rahmat Pratama Putra (Departemen Perikanan, Fakultas Ilmu Kelautan dan Perikanan, Universitas Hasanuddin)
Andi Alya Yusriyyah (Departemen Kelautan, Fakultas Ilmu Kelautan dan Perikanan, Universitas Hasanuddin)
Amanda Pricella Putri (Departemen Perikanan, Fakultas Ilmu Kelautan dan Perikanan, Universitas Hasanuddin)
Asmi Citra Malina (Departemen Perikanan, Fakultas Ilmu Kelautan dan Perikanan, Universitas Hasanuddin)
Nita Rukminasari (Departemen Perikanan, Fakultas Ilmu Kelautan dan Perikanan, Universitas Hasanuddin)
Joeharnani Tresnati (1Departemen Perikanan, Fakultas Ilmu Kelautan dan Perikanan, Universitas Hasanuddin)
Jamaluddin Fitrah Alam (Departemen Kelautan, Fakultas Ilmu Kelautan dan Perikanan, Universitas Hasanuddin)



Article Info

Publish Date
17 Aug 2026

Abstract

This study evaluated the suitability of dissolved inorganic nitrogen relative to marine water quality standards, described horizontal distribution patterns, and examined links with non nutrient physicochemical parameters in the coastal waters of Galesong, Takalar. Sampling in April to May 2025 covered five stations representing nearshore, seaweed farming areas, and more open waters. In situ measurements included temperature, pH, dissolved oxygen, and salinity, and laboratory analyses quantified ammonium and nitrate with a spectrophotometer. Environmental conditions were within ranges favorable for seaweed growth. Ammonium was not detected at any station, while nitrate ranged from 0.017 to 0.023 mg L⁻¹, below the Government Regulation No. 22 of 2021 threshold of 0.06 mg L⁻¹. Spatial mapping showed higher nitrate concentrations at non farming stations, while the lower concentrations within farming areas indicate nitrogen uptake by cultivated seaweeds. Theese findings suggest that Galesong Waters remain suitable for seaweed aquaculture, provide that nutrient conditions are monitored regularly to prevent potential nutrient deficits that could reduce cultivation productivity.

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Journal Info

Abbrev

jmr

Publisher

Subject

Earth & Planetary Sciences

Description

The Journal of Tropical Fisheries Management is managed by the Department of Water Resource Management, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University aims to publish the results of basic, applied research in the scope of fisheries resources, fish stock studies, and ...