Anthropologists Look to Early Evidence of Salmon for Global Warming Insight

Jun 01, 2010

(PhysOrg.com) -- University of Maine anthropologist Brian Robinson and colleagues are looking at archaeological evidence of Atlantic salmon to better understand the effects of global warming.

The researchers found traces of Atlantic from 400, 3,000 and 6,000 years ago, with the earliest periods being warmer than present and relatively wet. New England climate predictions are for increased year-round temperatures, greater late-summer evaporation and increased precipitation in the spring, winter and fall.

The good news is that salmon did occur in Maine when the climate was warmer, but that also was a time when Maine rivers were free of dams and fish could go farther upstream to spawn in cooler waters.
If climate projections are correct, the ability of the to survive and reproduce may depend on timing of migrations and availability of upstream locales with sufficient flow and low enough temperatures to allow reproduction and feeding, according to Robinson.

The researchers’ findings were published in the Journal of Archaeological Science.

Explore further: Everglades trail surveyed for cultural artifacts

Provided by University of Maine

3 /5 (2 votes)
add to favorites email to friend print save as pdf

Related Stories

Maine salmon may be facing extinction

Jan 31, 2006

Maine salmon might be facing extinction despite a $20 million, five-year rescue effort and inclusion on the federal government's list of endangered species.

Climate threatens trout and salmon

May 17, 2010

Trout and salmon are among the world's most familiar freshwater fishes, but numbers have fallen over recent decades - in some areas, dramatically.

Climate change endangering U.S. salmon

Jan 07, 2008

Salmon in the Columbia River and other U.S. streams could face an uncertain future if global temperatures continue to warm, experts say.

Salmon fishing season at risk in Calif.

Mar 13, 2008

U.S. officials are considering canceling the 2008 salmon fishing season in California and Oregon because of a dramatic decline in salmon population.

Norway may halt salmon fishing season

Apr 18, 2008

Norwegian wildlife management officials said stocks of wild salmon have dropped so low they may have to halt the salmon fishing season.

Signals from the Atlantic salmon highway

Aug 18, 2008

For years scientists have struggled to understand the decline and slow recovery of Atlantic salmon, a once abundant and highly prized game and food fish native to New England rivers. Biologists agree that poor marine survival ...

Recommended for you

Secrets of dinosaur ecology found in fragile amber

16 hours ago

Ryan McKellar's research sounds like it was plucked from Jurassic Park: he studies pieces of amber found buried with dinosaur skeletons. But rather than re-creating dinosaurs, McKellar uses the tiny pieces ...

New progress of the Neogene Suidae research

Oct 17, 2014

Dr. Hou Sukuan and Prof. Deng Tao from the Institute of Vertebrate Paleontology and Paleoanthropology(IVPP), Chinese Academy of Sciences reported a new species of Chleuastochoerus from the Linxia Basin, Gansu ...

User comments : 0