5 minutes agoHot water in Alaska, large numbers of salmon are being killed
Periskopi(7 years ago)
(7 years ago)Alaska has been involved in a heat wave this summer, and this has caused a high number of salmon to fail to cope and die. Scientists have noted that some salmon species have disappeared after an expedition along the Koyokk River in Alaska after locals announced that a number [...]
Scientists have noted that some salmon species have disappeared after an expedition along the Koyokk River in Alaska after locals announced that a high number of salmon had surfaced.
Only during this expedition, which was undertaken late last month, did scientists note 850 dead salmon but said that the total number was 4 to 10 times higher.
Scientists believed that parasites or infections led to this situation, but fish were very healthy and had no indication that they had been affected by infection.
They concluded that this high death rate coincided with the heat wave, meaning that the heat had caused death.
Water temperatures, like air, have broken records this year.
Since 2002, scientists have been measuring the temperature at Cook Inlet, part of Alaska Bay, and temperatures have never exceeded 24 degrees Fahrenheit [24 ° C].
This year, however, temperatures in this water area had nearly reached 28 degrees Fahrenheit [28 ° C]. Scientists say that these are very high temperatures that make the respiratory process difficult for salmon.
