Sea temperatures. (Photo:Google/Map Link/Tele Atlas)
Possible increase in sea temperature could affect anchovy
Friday, November 23, 2012, 04:20 (GMT + 9)
In early December a large mass of warm water -- the third Kelvin wave -- could reach the coast of Peru.
According to experts in the field, the temperature rise in the sea will have an impact on the fishing industry, especially in the anchovy volume on the national coasts.
This was explained by Alfredo Vicuña, a satellite oceanography consultant, who recalled that during the past months of autumn and winter, sea and air temperatures were higher than normal because two Kelvin waves appeared.
For the researcher, this new wave will not have great magnitude but it will have an impact on the anchovy, which will hinder its capture, the newspaper El Comercio reported.
"Rising sea temperatures would not affect the resource this season, but in the next, that is to say, the first season of 2013, and that will happen if the increase is greater than 1.5 degrees Centigrade," said Vicuña.
In late October, the Ministry of Production (Produce) decided to set an anchovy quota of 810,000 tonnes to be captured up to March 2013 because there is not a good biomass volume at this time.
And if the species moved again, the sector's problems would increase.
Vicuña recalled that in the summer of 2010, in the northern area a sea temperature abnormality of about 2 °C was recorded.
"However, the air temperature increased 3.5 °C above the average. In Lima, the increase was from 1 to 1.5 °C, that is to say, in Lima in the summer we have a temperature of 28 °C, in the summer of 2010 it reached 30 °C," he continued.
At that time, the anchovy moved southward as a defense mechanism.
Vicuña believes it is likely that next year this scenario will be repeated but he noted that the current wave will surely be a little weaker.
Meanwhile, Felix Cubas, a specialist of the National Meteorology and Hydrology Service (Senamhi), clarified that a possible Kelvin wave in Peru is still under monitoring phase.
"Ultimately, it might come or not, it is still too far. It it arrives, it will be slight, imperceptible, though it might get activated on its way. In meteorology no statements can be made," he concluded.
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