Dr. Luiz Rocha from the California Academy of Sciences discussed the impact of climate change on coral reefs during a keynote lecture at KAUST. He highlighted the phenomenon of coral bleaching due to rising water temperatures and its devastating effects on marine ecosystems. Rocha also spoke about exploring mesophotic coral ecosystems (MCEs), or the "twilight zone," at depths of 60-150 meters. Why it matters: Understanding the impact of climate change on coral reefs and exploring deeper marine ecosystems is crucial for preserving marine biodiversity in the face of global warming.
A KAUST-led research team used acoustic readings to reassess fish populations in the ocean's mesopelagic zone (200-1000m depth). Published in Nature Communications, their findings indicate that mesopelagic fish quantities may be ten times greater than current estimates. The study also suggests that open-ocean ecosystems are as efficient as coastal regions in nutrient cycling. Why it matters: This discovery assigns mesopelagic fish a potentially significant, previously unrecognized role in the global carbon cycle and highlights KAUST's contribution to marine science.
KAUST researchers from the Red Sea Research Center are studying mesophotic reefs (40-150m deep) as potential climate refuges for corals threatened by marine heatwaves. These deeper reefs experience less heat and light stress compared to shallow-water corals. Advanced tools like submarines and robots are now enabling the study of these previously neglected ecosystems. Why it matters: Understanding the resilience of Red Sea corals could provide crucial insights for global coral reef conservation strategies amid climate change.
KAUST researchers and international collaborators tagged 15 Chilean devil rays in the Atlantic, revealing unexpected deep-diving behavior. The tags recorded dives reaching almost 2,000 meters at speeds of 6 meters per second and temperatures below 4 degrees Celsius. The rays exhibited two distinct diving patterns, including long periods at 1,000 meters and stepwise returns to the surface, possibly for thermoregulation. Why it matters: This research challenges previous assumptions about devil ray behavior and highlights KAUST's contribution to marine biology and understanding of ocean ecosystems.
Shark biologist Dr. Greg Skomal gave a keynote lecture at KAUST's Enrichment in the Fall 2018, discussing how little is known about sharks. Skomal highlighted that 49% of shark species are data deficient in basic information. He also discussed using acoustic tags and autonomous underwater vehicles (AUVs) like the REMUS SharkCam to study shark behavior. Why it matters: This highlights KAUST's role in hosting discussions on marine biology and the application of advanced technology in ecological research.