Coral bleaching due to thermal and environmental stress threatens coral reefs and possibly people who rely on their resources. Coral bleaching has a variety of causes. With few corals surviving, they struggle to reproduce, and entire reef ecosystems, on which people and wildlife depend, deteriorate. Global warming, meaning "climate changes" to the earth's atmosphere due to greenhouse gas emissions, is said to correlate with increased Coral bleaching events that lead to significant coral mortality can drive large shifts in fish communities. This can translate into reduced catches for fishers targeting reef fish species, which in turn leads to impacts on food supply
The coral bleaching events that have devastated the Great Barrier Reef in recent years have also taken their toll on the region’s fish population, according to a new study.
Normally, coral polyps live in an endosymbiotic relationship with these algae, which are crucial for the health of the coral and the reef. Coral bleaching occurs when coral polyps expel algae that live inside their tissues. Corals far below gleamed pale white in the sunlight, a stark contrast to the cerulean sea.
The Social and Environmental Effects of Coral Bleaching on the Great Barrier Reef Conclusion Scientists and activists are focusing mainly on taking away human stresses and impacts that cause coral bleaching.
They also talk of helping businesses that rely on the coral reefs to This can have ripple effects for coastal communities that depend on reef ecosystems for food, tourism, and shoreline protection. In the summer of 2017, a small plane hummed over Australia’s Great Barrier Reef. Coral bleaching matters because once these corals die, reefs rarely come back. It may result from increases in seawater temperature, particularly when associated with elevated levels of solar irradiance (e.g., ultraviolet radiation), or it may be caused by changes in seawater chemistry (e.g., due to ocean acidification or pollution), increased levels of sediment in seawater, or a coral…
The effects of El Niño and La Niña events are thought to be sources of coral bleaching. The scene might have been gorgeous, if it wasn’t so bleak.
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A coral bleaching event that is extreme enough for corals to die impacts the entire reef ecosystem. At least two-thirds of the Great Barrier Reef has been bleached under the extreme stress of marine heat waves.
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