Dead zones affect dozens of coral reefs around the world and threaten hundreds more according to a new study by Smithsonian scientists published in Proceedings of the National Academy of Sciences. Watching a massive coral ...
Environment
Mar 20, 2017
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52
Oxygen is an essential necessity of life on land. The same applies for almost all organisms in the ocean. However, the oxygen supply in the oceans is threatened by global warming in two ways: Warmer surface waters take up ...
Earth Sciences
Feb 15, 2017
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93
Around the world, wide swaths of open ocean are nearly depleted of oxygen. Not quite dead zones, they are "oxygen minimum zones," where a confluence of natural processes has led to extremely low concentrations of oxygen.
Earth Sciences
Dec 19, 2016
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27
Large areas of the global ocean, so called marine "dead zones" contain no oxygen and support microbial processes that remove vast amounts of nitrogen from the global ocean. Nitrogen is a key nutrient for life.
Environment
Dec 5, 2016
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455
A new study found that vulnerability of deep-sea biodiversity to climate change's triple threat - rising water temperatures, and decreased oxygen, and pH levels - is not uniform across the world's oceans.
Earth Sciences
Apr 27, 2016
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A reduction in the amount of oxygen dissolved in the oceans due to climate change is already discernible in some parts of the world and should be evident across large regions of the oceans between 2030 and 2040, according ...
Earth Sciences
Apr 27, 2016
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697
Oxygen is crucial for the existence of animals on Earth. But, an increase in oxygen did not apparently lead to the rise of the first animals. New research shows that 1.4 billion years ago there was enough oxygen for animals ...
Earth Sciences
Jan 4, 2016
5
22
By examining rocks at the bottom of ancient oceans, an international group of researchers have revealed that arsenic concentrations in the oceans have varied greatly over time. But also that in the very early oceans, arsenic ...
Earth Sciences
Dec 4, 2015
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614
The catalyst that allowed the evolution of complex life in Earth's oceans has been identified by a University of Bristol researcher. Up to 800 million years ago, the Earth's oceans were deprived of oxygen. It was only when ...
Earth Sciences
Dec 1, 2015
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360
Understanding the planet's history is crucial if we are to predict its future. While some records are preserved in ice cores or tree rings, other records of the climate's ancient past are buried deep in the seafloor.
Earth Sciences
Aug 26, 2015
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58
