Saving Seafood

The Good and Bad of Climate Change in Maine- Fishing Impacts

August 25, 2015 — “If ocean temperatures go up 5 degrees, I might actually swim in it,” proclaimed Tom Doak, executive director of the Small Woodland Owners Association of Maine.

I’d need at least 20 degrees, I responded. But Tom was making an important point about climate change: It’s not all bad.

Yes, there will be no skiing in Maine, but waterskiers will enjoy a long season. Farmers will have longer growing seasons, although some current crops won’t do well. As we plan for these climate changes, it’s important to include the benefits along with the bad impacts.

The June conference on Maine’s Economy & Climate Change, organized by Alan Caron and Envision Maine, was both fascinating and troubling. Last week, I told you a bit about the conference, and today I will focus on the three dozen people who spoke briefly, from 10 minutes to 1 minute.

“Eat Hake, not Haddock.” That must be our new slogan, said Andy Pershing of the Gulf of Maine Research Institute. Fish species are changing in the Gulf of Maine, he said, and hake eat cod. We’d like to eat cod too. But first, we must eat hake. And the real question is this: Will tourists eat hake? Just for the hake of it?

Read the full story at CentralMaine.com

 

 

Lobster population shifting north as ocean temps warm

August 18, 2015 — The lobster population has crashed to the lowest levels on record in southern New England while climbing to heights never before seen in the cold waters off Maine and other northern reaches — a geographic shift that scientists attribute in large part to the warming of the ocean.

The trend is driving lobstermen in Connecticut and Rhode Island out of business, ending a centuries-old way of life.

Restaurant diners, supermarket shoppers and summer vacationers aren’t seeing much difference in price or availability, since the overall supply of lobsters is pretty much steady.

But because of the importance of lobsters to New England’s economy, history and identity, the northward shift stands as a particularly sad example of how climate change may be altering the natural range of many animals and plants.

“It’s a shame,” said Jason McNamee, chief of marine resource management for Rhode Island’s Division of Fish and Wildlife. “It’s such a traditional, historical fishery.”

In 2013, the number of adult lobsters in New England south of Cape Cod slid to about 10 million, just one-fifth the total in the late 1990s, according to a report issued this month by regulators. The lobster catch in the region sank to about 3.3 million pounds in 2013, from a peak of about 22 million in 1997.

Read the full story from the Associated Press at the Portland Press Herald

 

Drought Forces Trout to Be Trucked From California Hatchery

August 13, 2015 — FRESNO, Calif. (AP) — Tons of rainbow trout had to be rescued from a Central California fish hatchery and moved by truck to cooler lake water, sparing them from the state’s relentless drought, wildlife officials said Wednesday.

About 80,000 pounds of trout were scooped up from the San Joaquin Hatchery near Fresno and hauled 30 miles uphill to Shaver Lake in the Sierra Nevada foothills. Temperatures in Millerton Lake, which flow through into the hatchery on the San Joaquin River, had reached nearly 70 degrees, threatening the trout’s survival, The Fresno Bee reported (http://bit.ly/1Ns8OG3 ).

“The drought is having a devastating effect,” California Department of Fish and Wildlife spokesman Andrew Hughan said. “We’re really making an effort to save as many fish as we can and get them into cold water before it gets any warmer.”

Read the full story from the Associated Press at The New York Times 

Climate change causes timing shifts in fish reproduction

August 10, 2015 — SAN DIEGO, Calif. — Research by Rebecca Asch, a recent graduate of Scripps Institution of Oceanography at UC San Diego, shows a strong correlation between warmer ocean temperatures and changes in the timing of fish reproduction.

The study, “Climate Change and Decadal Shifts in the Phenology of Larval Fishes in the California Current Ecosystem ,” was published in the July 9 early edition of the Proceedings of the National Academy of Science. This is the first study to examine the effects of temperature, upwelling, and abundance of zooplankton on fish phenology in the Southern California Current ecosystem.

Climate variability has changed the seasonal cycle of larvae production by fishes in the California Current. Such shifts in seasonal, biological processes are known as phenology. Changes in phenology are studied by scientists as a key way to assess the effects of climate change on a species.

There have been extensive studies on the phenology of terrestrial (land) species, but comparatively few studies on how climate variability affects seasonal behavior of marine species. Existing studies indicate that changes in seasonal cycles are occurring earlier in most terrestrial ecosystems. Climate change may cause the phenology of marine animals to change more rapidly than terrestrial species.

Unseasonably warm ocean temperatures may also affect migration patterns, bringing several marine species usually found in regions closer to the Equator closer to Southern California. In February, a pod of false killer whales were seen from the Scripps Pier; this was the first time these whales have been seen north of central Baja California.

Read the full story at Phys.org

A big shift is coming to the Maine lobster population — and it could devastate the local economy

July 7, 2015 — There aren’t many foods more closely associated with Maine than the lobster.

So it’s pretty scary that this valued American crustacean could one day soon become a Canadian treasure — a change that could have a devastating impact on Maine’s local economy.

The problem is, lobsters like cold water. And oceans are warming, especially in New England.

The waters in the Gulf of Maine, specifically, are warming 99% faster than the rest of the world’s oceans.

And as a result, lobsters are moving north toward colder climates.

Over the last decade, southern lobster fisheries along Long Island and Connecticut have already seen their catches drop due to lobsters moving north into Maine, which hauled record catches during the same time period, according to the Portland Press Herald.

Maine lobsters have already moved north about 43 miles per decade between 1968 and 2008, according to a 2013 study.

Read the full story at Business Insider

THE NEW YORK TIMES: ‘No Fishing’ at the North Pole

July 21, 2015 — Fishing at the North Pole may seem ludicrous to a world raised on the notion of the top of the world as a deep-frozen wasteland, but at the rate the Arctic Ocean is melting it may not be long before fishing trawlers can operate in waters that have been inaccessible for more than 800,000 years.

So it was a good idea for the five nations that have territorial claims around the Arctic Ocean — the United States, Canada, Russia, Norway and Denmark — to put a “No Fishing” sign on the high seas portion of the central Arctic until full scientific studies have been conducted.

The declaration to prevent unregulated fishing in the central Arctic acknowledged that fishing beyond the 200-mile exclusive economic zone of the coastal states is not likely to start in the near future.

Read the full story from The New York Times

 

Coral bleaching threat increasing in western Atlantic and Pacific oceans

July 6, 2015 — As unusually warm ocean temperatures cover the north Pacific, equatorial Pacific, and western Atlantic oceans, NOAA scientists expect greater bleaching of corals on Northern Hemisphere reefs through October, potentially leading to the death of corals over a wide area and affecting the long-term supply of fish and shellfish.

While corals can recover from mild bleaching, severe or long-term bleaching kills corals. Even if corals recover, they are more susceptible to disease. Once corals die, it usually takes decades for the reef to recover — but recovery is only possible if the reefs are undisturbed. After corals die, reefs degrade and the structures corals build are eroded away, providing less shoreline protection and less habitat for fish and shellfish.

“The bleaching that started in June 2014 has been really bad for corals in the western Pacific,” said Mark Eakin, NOAA Coral Reef Watch coordinator. “We are worried that bleaching will spread to the western Atlantic and again into Hawaii.”

Earlier this year, NOAA’s Coral Reef Watch four-month Coral Bleaching Outlook accurately predicted coral bleaching in the South Pacific, including the Solomon Islands, Papua New Guinea, Nauru, Fiji, and American Samoa. It also recently predicted the coral bleaching in the Indian Ocean, including the British Indian Ocean Territory and the Maldives.

Coral bleaching occurs when corals are stressed by changes in environmental conditions such as temperature, light or nutrients. The coral expels the symbiotic algae living in its tissue, causing the tissue to turn white or pale. Without the algae, the coral loses its major source of food and is more susceptible to disease. Scientists note, however, that only high temperatures can cause bleaching over wide areas like those seen since 2014.

In fall 2014, Hawaii saw widespread coral bleaching for the first time since 1996. If corals in Hawaii bleach again this year, it would be the first time it happened in consecutive years in the archipelago.

Warmer ocean temperatures in 2014 also dealt a blow to coral nurseries in the Florida Keys, where scientists are growing threatened coral species to transplant onto local reefs. Coral reefs in Florida and the Caribbean have weathered repeated and worsening coral bleaching events for the past thirty years. The NOAA Coral Reef Watch monitoring team says that more bleaching so soon could spell disaster for corals that have yet to recover from last year’s stress.

“Many healthy, resilient coral reefs can withstand bleaching as long as they have time to recover,” Eakin said. “However, when you have repeated bleaching on a reef within a short period of time, it’s very hard for the corals to recover and survive. This is even worse where corals are suffering from other environmental threats, like pollution or overfishing.”

NOAA’s bleaching prediction for the upcoming months supports the findings of a paper published in the journal Science last week that examined the threat to marine ecosystems and ecosystem services under two different carbon dioxide emission pathways.

“The paper reports that even if humans limit the Earth’s warming to two degrees C (3.8 degrees F), many marine ecosystems, including coral reefs, are still going to suffer,” said Eakin, an author on the paper. “The increase we are seeing in the frequency and severity of bleaching events is part of why the climate models in that paper predict a dire future for coral reefs.”

The NOAA Coral Reef Watch program’s satellite data provide current reef environmental conditions to quickly identify areas at risk for coral bleaching, while its climate model-based outlooks provide managers with information on potential bleaching months in advance. The Coral Reef Watch mission is to utilize remote sensing and in situ tools for near-real-time and long term monitoring, modeling and reporting of physical environmental conditions of coral reef ecosystems.

The four-month Coral Bleaching Outlooks, based on NOAA’s operational Climate Forecast System, use NOAA’s vast collection of environmental data to provide resource managers and the general public with the necessary tools to help reduce effects of climate change and other environmental and human caused stressors.

Read the story from NOAA