Study finds oxygen loss in the coastal Baltic Sea is “unprecedentedly severe” – Global warming delays recovery from 20th century pollution

5 July 2018 (EGU) – The Baltic Sea is home to some of the world’s largest dead zones, areas of oxygen-starved waters where most marine animals can’t survive. But while parts of this sea have long suffered from low oxygen levels, a new study by a team in Finland and Germany shows that oxygen loss […]

Image of the Day: Satellite view of algae bloom in the Gulf of Finland, 18 July 2018

By Mike Carlowicz 23 July 2018(NASA) – Every summer, phytoplankton spread across the northern basins of the North Atlantic and Arctic Oceans, with blooms spanning hundreds and sometimes thousands of kilometers. Nutrient-rich, cooler waters tend to promote more growth among marine plants and phytoplankton than is found in tropical waters. Blooms this summer off of […]

Hundreds of sea turtles washing up dead on Southwest Florida beaches, likely victims of red tide

By Chad Gillis 25 July 2018 (Fort Myers News-Press) – Hundreds of sea turtles have washed up on Southwest Florida beaches this year in a mass mortality event that researchers say will impact the recovery of protected species. Seventeen have been recovered in Sanibel and Captiva waters in the past week. “Our average for the […]

Across U.S., toxic algal blooms threaten lakes and other waterways, with alarming rise from 3 blooms in 2010 to 169 blooms in 2017

AMES, Iowa, 15 May 2018 (EWG) – Across the U.S., a growing epidemic of toxic algal blooms is polluting lakes and other waterways, according to a new report by the Environmental Working Group.Toxic algal blooms occur when chemical pollution from farms and other sources runs off into waterways, forming a thick, green, soup-like substance on […]

Study finds warning signs for mass extinction do exist, contrary to previous assumptions – “We should take these signs very seriously”

14 March 2018 (FAU) – Mass extinctions throughout the history of the Earth have been well documented. Scientists believe that they occurred during a short period of time in geological terms. In a new study, FAU palaeobiologists and their research partners have now shown that signs that the largest mass extinction event in the Earth’s […]

Phosphorus pollution reaching dangerous levels worldwide, new study finds

WASHINGTON D.C., 25 January 2018 (AGU) – Man-made phosphorus pollution is reaching dangerously high levels in freshwater basins around the world, according to new research. A new study published in Water Resources Research, a journal of the American Geophysical Union, estimated the global amount of phosphorus from human activities that entered Earth’s freshwater bodies from […]

Ocean oxygen levels dropping as world warms – “The decline in ocean oxygen ranks among the most serious effects of human activities on the Earth’s environment”

4 January 2018 (Smithsonian Environmental Research Center) – In the past 50 years, the amount of water in the open ocean with zero oxygen has gone up more than fourfold. In coastal water bodies, including estuaries and seas, low-oxygen sites have increased more than 10-fold since 1950. Scientists expect oxygen to continue dropping even outside […]

Global warming has quadrupled ocean dead zones – “The decline in ocean oxygen ranks among the most serious effects of human activities on the Earth’s environment”

4 January 2018 (SERC) – In the past 50 years, the amount of water in the open ocean with zero oxygen has gone up more than fourfold. In coastal water bodies, including estuaries and seas, low-oxygen sites have increased more than 10-fold since 1950. Scientists expect oxygen to continue dropping even outside these zones as […]

Study reveals scale of “nitrate timebomb”

By Roger Harrabin 10 November 2017 (BBC News) – Huge quantities of nitrate chemicals from farm fertilisers are polluting the rocks beneath our feet, a study says.Researchers at the British Geological Survey say it could have severe global-scale consequences for rivers, water supplies, human health and the economy.They say the nitrate will be released from […]

Microbes dictate regime shifts causing anoxia in lakes and seas – “Hysteresis loops and tipping points are a common feature of oxic-anoxic transitions, causing rapid drops in oxygen levels that are not easily reversed”

6 October 2017 (UvA News) – Gradual environmental changes due to eutrophication and global warming can cause a rapid depletion of oxygen levels in lakes and coastal waters. A new study led by professors Jef Huisman and Gerard Muyzer of the University of Amsterdam (UvA) shows that microorganisms play a key role in these disastrous […]

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