In the bustling waters of the Seribu Islands, a team of researchers led by Syahrul Purnawan from the Laboratory of Marine Acoustics at Universitas Syiah Kuala has been making waves with their innovative use of hydroacoustic technology. Their recent study, published in the journal ‘Ilmu Kelautan’ (which translates to ‘Marine Science’), sheds light on the distribution of fish around Lancang Island, offering valuable insights for the fisheries sector and maritime industries.
So, what’s all the fuss about? Well, Purnawan and his team used a 200 kHz single beam echosounder to map out the fish populations in the waters surrounding Lancang Island. They found that the highest concentration of fish, measured by Target Strength per cell (TSc), was in the depth range of 26-31 meters. This is where the fish were most abundant, with a biomass of 26.6 kg per hectare. “The results showed that the highest average TSc value was found in the depth range of 26-31 m at -46.98 dB,” Purnawan explained.
But it’s not just about finding where the fish are. The team also looked at how water temperature and salinity affect fish distribution. They found that these factors do have a significant impact, but there are other factors at play too, like the type of substrate and habitat. This is particularly important in coral reef environments, which are hotspots for marine biodiversity.
So, what does this mean for the maritime sectors? Well, for starters, it’s a goldmine for the fisheries industry. By understanding where fish are most abundant and what factors influence their distribution, fishermen can optimize their catch, reducing waste and increasing efficiency. It’s a win-win for both the industry and the environment.
Moreover, this research can inform marine conservation efforts. By identifying key habitats and understanding the factors that influence fish distribution, conservationists can better protect these areas and ensure the sustainability of marine resources.
Purnawan’s work also highlights the potential of hydroacoustic technology in underwater exploration. As Purnawan put it, “Sound propagates effectively through the water column, establishing hydroacoustic technology as a premier method for underwater exploration.” This technology can be used for a variety of applications, from mapping aquatic ecological resources to monitoring marine life.
In the end, Purnawan’s research is a testament to the power of science in driving innovation and sustainability in the maritime sectors. It’s a reminder that by understanding our oceans, we can better protect them and harness their resources responsibly.