The Earth is currently experiencing an extinction crisis, lots of species dying out despite the tireless efforts of conservation groups. Among countless other endangered species reside the Californian salmonids, which researchers believe will disappear during the next 100 year or so.
Fishing organizations and conservation groups have been desperately trying to help these species. They tried restoring floodplains so they could find shelter and enough food. Nevertheless, their actions proved to be in vain as more than 80% of Californian native salmon species are going to be extinct in 100 years.
The research was conducted by scientists from UC Davis. According to the study’s author, climate change is the main cause for the rapid disappearance of salmonids as the shift in temperatures degrades their habitat. Pollution is also a major player in this game, salmon and trout being unable to survive in infested waters.
Normally, a high population of fish is a sign that the water is clean, healthy, and cool. This brings us to another factor that is affecting these marine animals – the ever increasing water temperatures. Once the water temperature reaches a critical threshold, California’s salmon and trout will die out in a matter of months.
Some species and subspecies of salmon and trout are already locally extinct. For instance, the bull trout was last seen in 1975 in the McCloud River. The subspecies of California’s salmon that are the most endangered are the Central California coho salmon and the Sacramento River Chinook salmon. The researchers mentioned that the population growth, the alteration of the San Francisco Bay, and the agricultural demands for river water are other factors that affect California’s salmon and trout.
What is your opinion about this study? Did you know that these fish are going to be extinct?
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