| dc.description.abstract | Anak Laut Lake is a coastal lake whose water conditions are influenced by
tidal dynamics. This research was conducted with the parameters of temperature,
dissolved oxygen (DO), salinity and pH. The purpose of this study was to determine
the description of temperature conditions, dissolved oxygen availability, salinity
and pH vertically for 24 hours in Anak Laut Lake waters and to determine the
critical level of dissolved oxygen vertically for 24 hours in Anak Laut Lake waters.
The research took place in March 2023. There were 4 observation stations including
station 1 (outlet and inlet and directly adjacent to the open sea), station 2 (fish
landing base and near KJA), station 3 (mangrove ecosystem and river flow), station
4 ( near settlements and tourist activities). The results of the research that has been
done show that temperature, dissolved oxygen and pH vertically show that with
increasing depth the concentration decreases, while for salinity with increasing
depth the concentration of salinity is the same. Temperatures range from 28oC–
30oC. The highest DO was found at surface depth of 6.5 mg/l and the lowest at a
compensation depth of 5.0 mg/l. Salinity values were obtained ranging from 15 –
30 ppt and pH values obtained were 7.1 – 8.4. The highest saturation percentage is
obtained at the depth of the surface with a value of 89.23% The DO concentration
is classified as not critical or very good for fisheries in general and for the life of
organisms with the lowest DO value of 5.0 mg/l. | en_US |
