All articles tagged with #coral reefs
Rising sea-surface temperatures driven by human-caused climate change and a strengthening El Niño are pushing the world’s oceans toward an all-time heat record, threatening carbon uptake and coral reefs, while also impacting fisheries and coastal climates.
A Frontiers in Marine Science study reports living mesophotic coral gardens off Benin in the Gulf of Guinea at about 54 meters depth, found after decades when researchers thought such reefs were dead. Using side-scan sonar, underwater cameras, and a drone, scientists documented patchy hard-bottom habitats with octocorals, black corals, and multiple fish species, suggesting these twilight reefs may be refuges from warming and are more widespread but underexplored. Limitations include surveying only one of two identified areas and lacking coral samples for definitive identifications.
Researchers mapped climate resilience of coral reefs and found about 166,000 square kilometers globally that can withstand warming, with hotspots in the Bahamas, Cuba, Australia, Indonesia, and the Philippines. Resilience stems from factors like upwelling cooling, favorable microbes, and the ability to rebound after bleaching, guiding targeted conservation investments such as protected areas and restoration. However, El Niño and ongoing warming threaten reefs, and protecting diversity of resilience within reefs is crucial.
A new study maps coral reefs and identifies about 64,000 square miles that appear capable of withstanding warming oceans, highlighting priority areas for targeted conservation and restoration to protect biodiversity and livelihoods as climate change progresses.
Divers off Jamaica install solar-powered underwater speakers to replay healthy reef sounds for 14 hours daily, aiming to lure marine life back to degraded reefs; inspired by a Nature study showing acoustic enrichment can double fish numbers and boost biodiversity, the project blends art and science with lab-grown corals to counter climate-driven reef decline.
Kona Low storms dumped mud, sediment and toxins into Hawaiʻi’s coastal waters, smothering nearshore corals and reef fish from Oʻahu to Maui and raising concerns about spawning viability and long‑term recovery as muddied waters linger. Scientists and conservation groups are rushing to assess damage and mobilize rapid-response reef restoration, while officials push for improved runoff management to prevent future harm.
The Earth's oceans have warmed for the ninth consecutive year in 2025, absorbing vast amounts of heat that contribute to climate change, extreme weather, and threats to marine ecosystems like coral reefs, with the warming penetrating as deep as 2,000 meters and likely to persist for centuries. Immediate action to reduce greenhouse gases could stabilize or reverse this trend.
Coral reefs, vital to marine biodiversity, are nearing a potential catastrophic collapse due to increasing ocean heatwaves, especially around 2026, driven by climate change and El Niño cycles. While some reefs show resilience, many are at risk of irreversible damage, emphasizing the need for urgent global action to reduce emissions and local stressors to preserve these ecosystems.
Coral reefs have played a crucial role in regulating Earth's climate for over 250 million years by influencing ocean alkalinity and carbon absorption, with their rise and fall affecting climate recovery times and marine evolution; current reef decline due to human activity may impact this natural climate regulation, but recovery would take thousands to hundreds of thousands of years.
A 2025 report warns that Earth has already crossed critical climate tipping points, including the loss of coral reefs and potential irreversible melting of polar ice sheets, with global temperatures nearing 1.5°C above pre-industrial levels, posing severe risks to ecosystems and human societies. Urgent global efforts are needed to prevent further irreversible damage.
A landmark report warns that the planet has reached a critical climate tipping point, with widespread coral reef die-offs and the potential collapse of vital Earth systems like ocean currents, emphasizing the urgent need for global action to reduce emissions and limit warming to prevent catastrophic consequences.
A new report warns that the Earth has reached its first catastrophic climate tipping point, with coral reefs facing widespread dieback due to rising temperatures, and highlights the urgent need for aggressive climate action to prevent further irreversible ecosystem damage and other tipping points like ice sheet collapse and Amazon dieback.
Coral reefs are the first environmental system on Earth to pass a climate 'tipping point,' with widespread bleaching and dieback due to rising ocean temperatures, signaling an urgent need for global decarbonization to prevent irreversible ecological and economic damage.
The article explores the potential and ethical dilemmas of using CRISPR gene editing technology to combat environmental issues like coral reef extinction and species preservation, highlighting both scientific advances and the risks of unintended consequences in ecological interventions.
Elvira Alvarado, known as the 'mother of Colombian corals,' is a 70-year-old marine biologist dedicated to saving endangered coral reefs in Colombia through in-vitro fertilization techniques, mentoring new scientists, and promoting resilient coral varieties amidst threats like climate change and disease.