Another reason global warming has not been too bad yet is because the ocean absorbs most of the earth’s excess heat. But oceans are warming due to greenhouse gas emissions. According to the National Oceanic and Atmospheric Administration, half of the increase in ocean heat content since 1865 has occurred over the past two decades. Warmer water holds less oxygen, but the respiration rate of animals (except for marine mammals) increases with temperature, so they need more oxygen at the same time that less is available. A warmer ocean has less turnover (vertical water movements), which normally brings nutrient-rich water up from deep water to the plankton that photosynthesize near the surface. With fewer nutrients, they photosynthesize less and animals can’t get enough food.
A large research synthesis, published in one of the world’s most influential scientific journals, has detected a decline in the amount of dissolved oxygen in oceans around the world — a long-predicted result of climate change that could have severe consequences… Read More ›
MOSS LANDING, Calif.—California marine scientists are collecting samples from sea mammals around the state to in an effort to create a map of toxic hot spots. Marine Mammal Center researchers plan to use 10 years of data collected from the… Read More ›
From the Marine Conservation Institute The 1st-ever quantitative, scientifically rigorous national ranking of states’ protection of their ocean waters, SeaStates: How Well Does Your State Protect Your Coastal Waters?, shows that most states and territories are failing to safeguard our… Read More ›