Vincent Saba, a fisheries researcher with the National Oceanic and Atmospheric Administration’s Northeast Fisheries Science Center, said he’s worked on related studies showing that weakening of the Gulf Stream system leads to regional warming of the waters along the continental shelf of Northeastern North America, prime grounds for commercial and recreational fishing.
Condition of Oceans
“We’re getting vision of this landscape scale collapse for the first time … arguably it’s a little bit worse than we expected because of the extent of the barreness and the distribution so far out to sea,” Frankham told Breakfast.
The Oceana report found that in the reported cases, 90 percent of the animals had swallowed plastic, and the rest were entangled in it. Necropsies often showed that the animals had died from blockages or lacerations. Other times, ingesting plastic may have simply weakened the animal or played no role in its death. Over all, in 82 percent of the cases, the animals died..
Scientists from a local nature reserve who examined the waters of the bay said 95% of sea life to the depth of 10 to 15 meters was dead.
Wildfire smoke is made up of a range of gases, including carbon monoxide; nitrogen dioxide; polycyclic aromatic hydrocarbons, or PAHs; and hazardous particulate matter, which has been shown to increase risks of respiratory and cardiovascular illnesses in humans.
It’s much harder to track the effects of the tens of thousands of chemicals that are dumped in the ocean every day, through sewage, agricultural runoff, and industrial waste—most of which have unknown effects on wild ecosystems. What we do know is that the bodies of marine animals act like magnets for these toxics, which accumulate in their fat and are amplified up the food chain.
“The overall big picture here is that surface water carbon dioxide levels are indeed increasing in the Gulf of Mexico (except in the central Gulf) and human activities are contributing to this acidification,” says Shamberger. “Also, coastal acidification is occurring faster than open ocean acidification, which is especially troubling for coastal coral reef and shellfish ecosystems that support many important fisheries species.”
Balmy temperatures can lead to conditions perfect for the spread of infectious diseases, Sanderson said. When sea ice melts too early in the season, seal pups must enter the water before they are ready to be weaned, leaving them weaker and more vulnerable to disease. Vanishing sea ice also means that seals and sea lions in cold regions will have less space to emerge from the water to rest, breed, or escape predators, forcing them to crowd more tightly together.