Claim: The projection that much of the Great Barrier Reef could perish within the next few decades could turn out to be too pessimistic, since other research has shown that some species of corals are surprisingly resilient to the stress from changing ocean temperatures.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Large coral colonies such as Porites are able to withstand extreme temperature shocks, while fragile branching corals such Acropora are far more susceptible to stress following a temperature change.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
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): 1
Passage: A March 2016 report stated that coral bleaching was more widespread than previously thought, seriously affecting the northern parts of the reef as a result of warming ocean temperatures.

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): 1
Passage: These forms of pollution have made the reef less resilient to climate change.

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.

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: 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: They are trying to make "super corals" that can withstand some of the environmental factors that the corals are currently dying from.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Corals have shown to be resilient to short-term disturbances.

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: 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: There are concerns that increasing acidification could have a particularly detrimental effect on [[coral]]s (16% of the world's coral reefs have died from bleaching caused by warm water in 1998, which coincidentally was, at the time, the warmest year ever recorded) and other marine organisms with [[calcium carbonate]] shells.