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Tag archives for Coral Bleaching
Jessica Perelman, a scientist at Woods Hole Oceanographic Institute, describes how sound can be used to study coral reefs.
Lagoons have always fascinated me. The size, shape, and length of a lagoon – and the number of channels that connect inner lagoonal waters with the open ocean – influence the types of coral communities that form within. Because of the amount of sand in the lagoon that sits between the two islands of Kaibu and Yacata in northern Lau Group, I had fairly minimal expectations about what I might see. But nature has a way of surprising us, even the more seasoned coral ecologists!
Documentary filmmaker Christine Ren combines her passions for the arts, sciences and dance to advocate for ocean conservation.
It has been almost impossible to predict which reefs would survive Cyclone Winston and which ones would sustain serious damage. There is no clear pattern so far. We would dive on one reef to find it broken apart by waves, then turn a corner and find a reef intact and flourishing. The fish and shark life seemed at this stage to be largely unaffected. We were lucky to swim with white tip and grey reef sharks, large manta rays, and big schools of big-eyed trevally, surgeonfish, and fusiliers.
Over the next 10 days, through the generous support of Nai’a Cruises — a live-aboard ship that has been diving in Fiji since 1993 — WCS Fiji Director Sangeeta Mangubhai will be surveying coral reefs throughout the Vatu-i-Ra Seascape to assess the damage caused by Cyclone Winston and collect data on coral bleaching. This is the first in a series of blogs on that survey.
In February 2016, scientists from World Wildlife Fund, the Wildlife Conservation Society, Conservation International and Universitas Papua developed a unique hands-on training in underwater science for local dive guides and students who live and work in the Raja Ampat Marine Protected Area Network. Together our goal was to empower local stakeholders with scientific knowledge and capacity to monitor their coral reefs.
Guest post by Mark Schick, collections manager, Shedd Aquarium There was grim news for the world’s coral reefs this October, when the National Oceanic and Atmospheric Administration (NOAA) declared the third global coral bleaching in history. This event signifies major changes in oceanic living conditions and temperatures, some of which are brought upon by our…
Comparing a bleached anemone to the undead may be a bit of a stretch, but it is fair to say a bleached anemone is hovering somewhere between life and death and depending on what happens next, it can go either way. We got a closer look at the phenomenon of bleached anemones earlier this year…
Researchers announced this month that a massive global coral bleaching event is jeopardizing the health of coral reefs around the world, and the crisis is still heating up. A triple threat of climate change, El Niño and a climate change-induced “warm blob” in the Pacific is causing the ocean to reach unusually high temperatures, stressing…
The coral reefs of Palau hold approximately 400 species of hard corals, 300 species of soft corals, and 1400 species of reef fish. Palau is internationally renown for its beautiful landscapes and seascapes as well as its biological significance to the environment. The Khaled bin Sultan Living Oceans Foundation undertook its third expedition with the International League of Conservation Photographers in this fabled archipelago, working with iLCP Fellow Keith Ellenbogen.
By Emily Darling
Protected areas are a hallmark strategy in marine conservation. Yet when they were first created, a growing lethal threat had not yet fully revealed itself. Warming, acidifying, and rising seas have devastated the world’s sensitive coral reefs, widely regarded as “ground zero” for climate change. El Niños and marine heat waves can bleach and destroy vast areas of healthy, biodiverse reefs even where they occur within “protected” parks. If the global impacts of climate change do not stop at park boundaries, what can scientists do? One strategy is to identify and protect climate refuges – habitats with more stable environments where species can survive warming temperatures.
The Khaled bin Sultan Living Oceans Foundation conducts scientific surveys on coral reefs around the world to determine the health and resilience of the reef. The primary scientific goals of the Expeditions are to map and characterize coral reef ecosystems, identify their current status and major threats, and examine factors that enhance their ability to resist, survive and recover from major disturbance events like bleaching, cyclone damage, or Crown of Thorns outbreaks. iLCP Fellow Jürgen Freund documents an expedition to the magnificent Great Barrier Reef.
With corals across the globe bleaching due to advancing ocean temperatures, many of the world’s coral reef experts believe these centers of marine biodiversity may become the first casualty of climate change. But while the news on corals has been largely grim, it is not beyond hope.