PERU fishing with guts to report…
The rapid disappearance of the broad masses of permafrost in the Arctic Ocean is facilitating the exchange of marine species for millennia had been separated in the waters of the North Atlantic and North Pacific.
Mary S. Wisz, Lead author of the study, notes that the predictive models shows that Arctic warming promotes the exchange of fish through the steps or passages Northwest (road across North America to the north, crossing the Arctic Ocean and connecting Davis Strait and Bering Strait) and Northeast (route along the coast of Russia), thanks to increased water temperatures Sea and the disappearance of permafrost.
The last time that environmental conditions allowed the large-scale transfer of species in this northern area of the planet was nearly three million years ago, during the opening of the Bering Strait.
The bad precedent Suez Canal
Redistribution and exchange of species cause great disruption in marine ecosystems, especially in coastal areas such as Greenland and Svalbard, with consequences difficult to calculate.
History has shown that sudden exchange biotic cause serious effects on the environment, remind the authors of the study published this week. For example, the construction of the Suez Canal in 1869 led to the invasion of the Mediterranean Sea by species from the Red Sea, causing negative ecological and biodiversity of the Mediterranean and the fishing industry economic consequences.
The newly published work provides some commercial species extend their range to higher latitudes and potentially increase fish production. However, these stocks also face new ecological contexts to climate change, as competition among existing species and invaders. Therefore, the next decades will present new challenges and opportunities for fisheries in the North Atlantic and North Pacific, now contributing almost 40% of commercial fish landings, worldwide.
SOURCE: Lavanguardia.com
