The world’s oceans are less affected by human activities then previously suggested by atmospheric models when it comes to increased

Graph of various nitrogen sources found in oceans

nitrogen levels, according to a new study published in Proceedings of the National Academy of Sciences. The majority of nitrogen found in the oceans comes from the oceans themselves instead of human pollution blown off shore, which contradicts most models, the researchers say. That’s both good news and bad news. On the plus side, “People may not be polluting the ocean as much as we thought,” says Meredith Hastings, associate professor of at Brown University, one of the study’s co-authors. Excess nitrogen can throw aquatic ecosystems out of balance and lead to large algal blooms that can be deadly for sea creatures. However, nitrogen also stimulates the growth of phytoplankton, which increases the oceans’ ability to absorb carbon dioxide from the atmosphere, thus mitigating carbon emissions to some extent. Shared from Yale Environment 360
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