Warming Oceans

Nitrite Pollution Increase in Ocean Water

Researchers have more than once warned of “dead zones” and toxic algal blooms as a consequence of changing climatic conditions. Ocean temperatures are increasing, and this in turn encourages a new set of biochemical processes.

Professor Hollibaugh and a colleague report in the journal Environmental Science and Technology that over the course of eight summers they measured peaks of nitrite, alongside massive increases in the numbers of the microorganisms that produce it, in coastal waters off Georgia.

Wild Blue Mussels Disappearing

The Gulf of Maine stretches from Cape Cod to Canada and is a key marine environment and important to commercial fishing. Blue mussels are used in seafood dishes and worth millions to the economy of some New England states, but are also important in moving bacteria and toxins out of the water.

Science Continues Melting Sea Ice Studies

In the vast and chaotic climate systems that govern our atmosphere and oceans, making sense of how one change — diminished sea ice — affects places or people thousands of miles away is a task of such extraordinary complexity that it strains even the most sophisticated supercomputers.

Unusual Warm Sea, Sharks & Otters

So the question is: Why have there been so many sightings outside late summer and early fall, the typical peak season for sharks?

The popular theory is that unseasonably warmer water has brought the change, but experts say it is much more complex than that.

Pacific West Coast Kelp Forests Vanishing

Veteran diver Steve Lackey, an instructor at Sub-Surface Progression Dive Shop in Fort Bragg, said, “I try not to be an alarmist, but it is pretty unprecedented, in my opinion.”

This time of year, he’s accustomed to seeing small sprouts of kelp begin to appear on the ocean floor, a harbinger of the spring and summer growing season. This year, there are none, he said.

“I don’t remember quite this clean, this kind of scoured rock, with hungry invertebrates,” he said.

West Coast Sardine Fishing Halted

Sardine stocks are at historic lows and might get worse, according to The Maritime Exclusive, “The sardine fishery closure is the second in as many years; it was closed mid-season last year due to low stocks, but it has since fallen further, and is expected to be down by 30 percent over last year by summer.”