The pristine waterways of Alaska have long been a refuge for native fish – but now there is an unexpected threat in these waters, which quietly disrupts balance that has been around for generations, the journey reported.
What happens?
The waterways of Alaska are attacked by an unexpected intruder: the northern pike.
This shocking predator secretly moves between freshwater ecosystems and decimates native fish populations. Scientists have discovered that the pike can now travel through Brak Water and that earlier assumptions can break over their movement.
Researchers have first traced the movement of the fish by analyzing strontium in their earnings, a method that provides indisputable evidence of their migration. As Matthew Wooler, the main author of the study, explained: “Strontium varies depending on geology and location. If the pike moves between electricity areas, you can pick it up by analyzing strontium in the otolites.”
Why is the northern pike over it?
The invasion of the Northern Pike threatens the delicate aquatic ecosystems of Alaska.
Since the 1950s, these fish have illegally populated 150 different water bodies, aimed at youth ointment and trout. They were introduced by people who were looking for more sport fishing opportunities, but the consequences have been devastating. As the journey wrote, the expansion of the Northern Pike “which means that fishing from the region of the region is exponentially” – which can have a huge impact on the local fishing and seafood restaurant industry.
View now: Delta shares the prototype of new suitcase made of retired jets
Chinook Salmon, Coho Salmon and Rainbow Trout populations have fallen dramatically. These native fish are devoured before the maturity that can push them out. The northern pike uses youth fishing so quickly that whole generations are at risk.
“These population groups never have the chance to increase, because so many never reach maturity,” according to the journeys, which is a serious care “for both freshwater ecosystems and the local economy.”
What is being done about the northern pike?
Alaska's Division of Sport and Fish is fighting back. With the help of methods such as gill nets, it has successfully removed the northern pike from more than 25 waterways – although it is known that gill nets damage other types of damage.
One commentator proposed an innovative approach: “Cash incentives for fishermen, combined with other programs”, could help compensate for the costs and involve the community.
But challenges remain. Chemical treatments are limited due to worries about drinking water and completely removing the pike seems almost impossible. With 150 locations that are still inhabited by these predators, the time runs out for the native fish of Alaska.
Become a member of our free newsletter for Good news And Useful tipsAnd don't miss this cool list with simple ways to help yourself while helping the planet.
