coral bleaching – Page 2 – Desdemona Despair

An ocean heatwave is shown in this map off the coast of New South Wales, Australia, 30 December 2021. Graphic: OceanCurrent

January 6, 2022

Extreme marine heatwave as waters off Sydney set to break temperature records – “It appears now to be reaching record levels and will likely be the hottest January on record”

By Graham Readfearn 4 January 2022 (The Guardian) – Waters off Sydney are undergoing an extreme marine heatwave with temperatures likely at their highest levels on record for January. Satellite data is showing the ocean surface off the coast of Sydney at 3C above normal, with swimmers and surfers reporting conditions that feel more like […]

Risk levels for climate-sensitive health outcomes based on different greenhouse gas emissions and adaptation scenarios. Graphic: IPCC WG 2 Sixth Assessment Report / AFP

June 23, 2021

Hunger, drought, disease: UN climate report reveals dire health threats – “The basis for our health is sustained by three pillars: the food we eat, access to water, and shelter. These pillars are totally vulnerable and about to collapse.”

By Patrick Galey 23 June 2021 (AFP) – Hunger, drought and disease will afflict tens of millions more people within decades, according to a draft UN assessment that lays bare the dire human health consequences of a warming planet. After a pandemic year that saw the world turned on its head, a forthcoming report by […]

Overall state of all natural World Heritage sites in 2014, 2017, and 2020. Graphic: IUCN

December 7, 2020

Climate change now top threat to natural World Heritage sites – Great Barrier Reef declines to “critical” status

GLAND, SWITZERLAND, 2 December 2020 (IUCN) – Climate change is now the biggest threat to natural World Heritage, according to a report [pdf] published today by IUCN (International Union for Conservation of Nature). A third (33%) of natural World Heritage sites are threatened by climate change, including the world’s largest coral reef, the Great Barrier […]

Empirical relationship between system area and regime shift duration in freshwater, marine, and terrestrial systems. Graphic: Cooper, et al., 2020 / Nature Communications

March 12, 2020

Ecosystems the size of Amazon rainforest “can collapse within decades”

By Jonathan Watts 10 March 2020 (The Guardian) – Even large ecosystems the size of the Amazon rainforest can collapse in a few decades, according to a study that shows bigger biomes break up relatively faster than small ones. The research reveals that once a tipping point has been passed, breakdowns do not occur gradually […]

Top: Opal Reef in the northern Great Barrier Reef before, during and after the 2016 mass bleaching event. (left to right: September 2015, April 2016, November 2016). Bottom: Double Cone Island in the Whitsundays area of the Great Barrier Reef in 2014, post-cyclone Debbie in 2017 and mid-2018 (left to right). Photo: Taylor Simpkins / Australian Institute of Marine Science

September 1, 2019

Great Barrier Reef outlook downgraded to “very poor” as threats mount – “We’ve had ten years of warnings, ten years of rising greenhouse emissions, and ten years watching the Reef heading for a catastrophe”

By Peter Hannam 30 August 2019 (The Sydney Morning Herald) – The Great Barrier Reef is at “a critical point” with the marine park’s outlook downgraded on Friday from “poor” to “very poor” due to coral bleaching and deforestation. Climate change resulting in rising sea temperatures was blamed in the federal government’s five-year Great Barrier Reef […]

Remote sensing imagery of discolored water and algal blooms in the Florida Bay and the Florida Keys region between 1992 and 2013 showing connectivity of the mainland and the lower Florida Keys, all outlined in red. (a) Landsat true color image on 29 May 1992 shows turbid water in western Florida Bay and discolored, black water in central Florida Bay that extends southward to the lower Florida Keys; (b) AVHRR reflectance image on 12 March 1996 shows high turbidity from the Shark River Slough plume extending beyond the lower Florida Keys towards Dry Tortugas; (c, d) VIIRS chlorophyll a anomaly images show phytoplankton blooms off Shark River Slough reaching the lower Florida Keys that were partially composed of the cyanobacterium, Synechococcus, on (c) 24 November 2013 and (d) 27 January 2014. Graphic: Lapointe, et al., 2019 / Marine Biology

July 26, 2019

Nutrient loading lowers resistance to thermal stress in Florida Keys corals – “These data make clear that this is not an ‘either temperature or nutrients’ situation, but rather a ‘both/and’ combination of multiple stressors”

By Gisele Galoustian 15 July 2019 (FAU) – Coral reefs are considered one of the most threatened ecosystems on the planet and are dying at alarming rates around the world. Scientists attribute coral bleaching and ultimately massive coral death to a number of environmental stressors, in particular, warming water temperatures due to climate change. A […]

Map of the 105,000 square miles of coal-rich outback land known as the Galilee Basin in Queensland, Australia. Graphic: The Times

June 20, 2019

Australia approves vast coal mine near Great Barrier Reef – “An act of climate vandalism that represents everything that has gone wrong with politics in Australia”

By Andrew Beatty 13 June 2019 (AFP) – Australia approved Thursday the construction of a controversial coal mine near the Great Barrier Reef, paving the way for a dramatic and unfashionable increase in coal exports. Queensland’s government said it had accepted a groundwater management plan for the Indian-owned Adani Carmichael mine—the last major legal hurdle […]