Abstract:
The current study was carried
out at Rezu Khal to determine the ideal area
for seaweed farming. Additionally, this
investigation uncovered species of
commercially productive and lucrative
seaweed. Temperature, salinity, pH, dissolved
oxygen (DO), conductivity, and Formazin
Nephelometric Units (FNU) of surface water
ranged from 20.9 to 26.2°C, 24 to 26.2‰,
6.45 to 8.5, 92 to 105%, 33,256 to 64,267
μS/cm, and 11.1 to 42.8, respectively.
Phosphate-phosphorus concentrations in
surface water were 2.6–7.6 mg/L, 0.04–0.12
mg/L for nitrate-nitrogen, 0.002–0.04 mg/L
for nitrite-nitrogen, 0.15–0.83 mg/L for
silica, and 0.13–0.28 mg/L for ammonia.
Three seaweed species (Gracilaria
lemaneiformis, Hypnea musciformes, and
Sargassum oligocystum) were cultivated in
the selected areas. Two methods (net and
long-line) were used for the culture. In this
study, 15–20 kg of G. lemaneiformis were harvested every 15 days using the net
method. H. musciformes gained 4 to 12 kg
every 15 days. Although S. oligocystum
thrived nicely, it was challenging to maintain
its viability. The findings of this study
indicate that seaweed farming is feasible and
coastal residents may participate in seasonal
income-generating endeavours in coastal
waters.
