By Eric Worrall – Re-Blogged From WUWT
Climate skeptic Aussie One Nation leader Pauline Hanson has challenged marine park authorities to explain why giving them money will help prevent global warming from bleaching coral reefs.
Pauline Hanson gives Great Barrier Reef Marine Park Authority’s top scientist a serve over coral bleaching
“You’re saying that coral bleaching is affected by water temperatures,” she told Dr David Wachenfeld.
“Yet around Indonesia, closer to the equator … where the water temperatures are 29C, it’s a known fact that coral actually grows faster and more prolific in warmer temperatures.“
Wachenfeld explained that corals live in a variety of water temperatures over the world, with substantial differences even within the Great Barrier Reef.
By Jim Steele – Re-Blogged From WUWT
Published October 2, 2019 in California’s Battle Born Media newspapers – the Pacifica Tribune, the Novato Advance, the Sausalito Marin Scope, the Mill Valley Herald, the Twin Cities (Larkspur and Corte Madera) Times, the San Rafael News Pointer and the Ross Valley Herald.
Imagine if today’s magnificent coral reefs all dried up and died – from the surface down to a depth of 400 feet. Horrifying! But that was exactly the case 20,000 years ago when growing glaciers of the Last Ice Age lowered sea level 400 feet. Yet coral reefs fully recovered as the earth warmed. So, what makes coral so resilient?
By Jim Steele – Re-Blogged From WUWT
Good news continues to accumulate regards corals’ ability to rapidly adjust to changing climates. The view of coral resilience has been dominated by the narrative of a few scientists. In the 1990s they advocated devastating consequences for coral reefs due to global warming, arguing coral cannot adapt quickly enough. Since the Little Ice Age ended, they believed rising ocean temperatures had brought coral closer to a “bleaching threshold”, a more or less fixed upper temperature limit above which corals cannot survive.
Their model predicted the speed of recent global warming “spells catastrophe for tropical marine ecosystems everywhere”. Their assertions that “as much as 95% of the world’s coral may be in danger of being lost by mid-century” was guaranteed to capture headlines and instill public fear. However, a growing body of scientific research increasingly casts doubts on such alarming predictions. Unfortunately, that good news gets much less attention.
By Rud Istvan – Re-Blogged From WUWT
WUWT has posted several excellent articles by Jim Steele on how global warming alarmism uses corals as the poster child for warming and acidifying oceans, none of which is scientifically justified. A brief review follows, calling attention to a recently discovered additional adaptation mechanism not covered AFAIK by Jim Steele’s posts. The motivation for this post was triggered by a recent lunch with newish neighbor Charles the Moderator (CtM), and his sharing many wonderful underwater photographs of the coral reef he now dives frequently off Pompano Beach (same reef system as off Fort Lauderdale, just a few miles further north and more conveniently onshore). If any coral reef images appear in this post, CtM added them and gets the photocredits.
By David Middleton – Re-Blogged From http://www.WattsUpWithThat.com
Climate change is internationally-recognised as one of the biggest threats to coral reefs around the world, including the Great Barrier Reef. For the last three years, coral bleaching, due to ocean warming associated with climate change, has impacted coral reefs worldwide. Mass coral bleaching events occur during extended periods of elevated sea surface temperatures and have the potential to result in significant and widespread loss of coral.
The current mass coral bleaching occurring in tropical regions across the world since 2014 is the longest mass bleaching event ever recorded. This is a global event triggered by record-breaking sea surface temperatures caused by climate change and amplified in 2016 by a strong El Niño. The ocean is warmer than at any time since the instrumental record began. For Australia’s Great Barrier Reef, this resulted in the worst ever coral bleaching in 2016.