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Excessive nutrients, such as nitrogen and phosphorus, have devastating effects on coastal marine ecosystems by causing algal blooms that deplete oxygen in the water, killing marine life. Such nutrients can enter the sea in wastewater or run-off from agricultural land. However, a new review in open-access journal Frontiers in Marine Science highlights that problems caused by other human activities, such as climate change, can exacerbate these detrimental effects on marine ecosystems.
