A global census, with KAUST participation, assessed reef shark populations using Baited Remote Underwater Video Systems (BRUVS). The study found reef shark populations thrive where there are marine conservation policies and fishing regulations. However, they are scarce in areas with overfishing and poor resource protections, with sharks absent on nearly 20% of surveyed reefs. Why it matters: The research highlights the importance of conservation management for reef sharks, key apex predators and indicators of reef health, especially in the Red Sea region.
An international team including KAUST researchers tracked nearly 2,000 sharks using satellite tags to map their movement and space use. The study found that 24% of shark habitats overlap with pelagic longline fisheries, with higher overlap for commercially exploited species. For North Atlantic blue and shortfin mako sharks, the overlap was 76% and 62% respectively. Why it matters: This research highlights the vulnerability of sharks to industrial fishing and underscores the need for targeted conservation efforts in critical habitats.
KAUST researchers, in collaboration with WHOI, studied whale shark movement patterns near the Shib Habil reef in the Red Sea over six years using visual census, acoustic monitoring, and satellite telemetry. The study monitored 84 sharks and found the aggregation to be highly seasonal, with sharks most abundant in April and May, returning yearly. The site may serve as a nursery for the wider Indian Ocean population, attracting juvenile females, which is unique to Shib Habil. Why it matters: Understanding whale shark behavior and critical habitats like Shib Habil is vital for future conservation efforts of this endangered species in the Red Sea and the broader Indian Ocean.
A KAUST-led study tracked coral grouper movements in Australia's Great Barrier Reef over 20 years. Researchers genotyped thousands of coral grouper to map larval dispersal patterns from no-take zones. They found that no-take zones ensure a consistent supply of fish stocks, benefiting both conservation and fisheries. Why it matters: The study demonstrates the value of marine protected areas for biodiversity and fisheries management, providing insights for effective reserve design.
A KAUST-led study published in PNAS quantifies the potential for increased food supply through coral reef restoration. Analyzing over 1,200 reef sites, the research estimates that rebuilding depleted fish populations could increase sustainable yields by nearly 50%. For Indonesia, this could translate to 162 million additional servings of reef fish annually. Why it matters: The study provides crucial evidence for governments to strengthen food security and ecosystem resilience through fisheries management, especially in regions facing high malnutrition.