Claim: If water temperatures stay moderate, the damaged sections of the Great Barrier Reef may be covered with corals again in as few as 10 or 15 years

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: In 2016, bleaching of coral on the Great Barrier Reef killed between 29 and 50 percent of the reef's coral.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Sea level on the Great Barrier Reef has not changed significantly in the last 6,000 years.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: When the 2019 Townsville flood waters reached the Great Barrier Reef, the flood plumes covered a large area of corals, even reaching 60 km out to sea.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: On 3 April 2010, the bulk coal carrier Shen Neng 1 ran aground on Douglas Shoals, spilling up to four tonnes of oil into the water and causing extensive damage to the reef.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: In March 2017, the journal Nature published a paper showing that huge sections of an 800-kilometre (500 mi) stretch in the northern part of the reef had died in the course of 2016 due to high water temperatures, an event that the authors put down to the effects of global climate change.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The IPCC's moderate warming scenarios (B1 to A1T, 2 °C by 2100, IPCC, 2007, Table SPM.3, p. 13) forecast that corals on the Great Barrier Reef are very likely to regularly experience summer temperatures high enough to induce bleaching.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The Great Barrier Reef along the coast of Australia experienced bleaching events in 1980, 1982, 1992, 1994, 1998, 2002, 2006, 2016 and 2017.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Some corals recover.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: An overall analysis of coral loss found that coral populations on the Great Barrier Reef had declined by 50.7% from 1985 to 2012, but with only about 10% of that decline attributable to bleaching, and the remaining 90% caused about equally by tropical cyclones and by predation by crown-of-thorns starfishes.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Increasing sea temperatures in tropical regions (~1 degree C) the last century have caused major coral bleaching, death, and therefore shrinking coral populations since although they are able to adapt and acclimate, it is uncertain if this evolutionary process will happen quickly enough to prevent major reduction of their numbers.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Bleaching events in benthic coral communities (deeper than 20 metres or 66 feet) in the Great Barrier reef are not as well documented as those at shallower depths, but recent research has shown that benthic communities are just as negatively impacted in the face of rising ocean temperatures.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: This gives researchers hope that with rising temperatures due to global warming, coral reefs will develop tolerance for different species of symbiotic algae that are resistant to high temperature, and can live within the reefs.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Researchers are now asking a new question: can we condition corals, that are not from this area, in this manner and slowly introduce them to higher temperatures for short periods of time and make them more resilient against rising ocean temperatures.