
Blue whales that run silent off the coast of disturbing scientists in California with a greater danger to the ecological system
Alarm sounding.
The sound of the blue whale’s singing fell off the California coast, where vocalists believed to be an indication of the greatest danger in the ecosystem.
Scientists tracked the auditory songs of three types of whales – blue, fins and wise – in the North Pacific in the current ecosystem in California (CCE) for six years.
The research, using the hydrovon on the ocean floor, analyzed the frequency of the serials organizing the sounds, which are usually referred to as the song, emitted from large whales, to determine the spread of this feed and its potential use in behavioral environmental research.
the study , Posted at the Public Science Library in February, I found a decrease in the discovery of songs for both blue whales and fans across two of three changes between the eight after 2017.
Records began in 2015, at the height of a multi -year marine heat.
The extraordinary warming began in 2013 when a large group of hot water, nicknamed the pick, from the Bereng Sea and the Alaska Gulf to the water off the western coast of the United States.
Meanwhile, CCE food toxicity was highly levels due to severe harmful algae (HAB) that caused “the most prevalent poisoning of the marine mammals that were ever documented, including whales.”
The water has been registered to be hotter 4.5 degrees than average, covering about 2000 miles from the Pacific Ocean by 2016.
Heatwave’s wave created a prosperous environment for blossom, killing Krill population, thus calming water with lower blue whale songs.
“When you really divide it, it is like an attempt to sing during your hunger,” said John Ryan, a biological designer at the Monterrey Pay Aquarium Research Institute who co -authorized the report. National Geographic. “They were spending all their time trying to find food.”
Ryan described her as “the most prevalent poisoning of the bonus maritime mammals,” which creates difficult times for the whale.
Blue Whale songs decreased by 40 percent during the study period.
The study indicates that the blue whales were on the feed in a larger area in 2019 due to the abundance of Krill in the tracking area.
Blue whales-the world’s largest mammals-maintains a strict Krill, but their counterparts in Al-Hadba are on a wide range of Krill and Fish.
The point did not affect the fish that feed on the fish – anchovy and sardines – and the study found an increase in the auditory detection of the Haddah whale songs.
The change between the types of smaller whales increased from 34 percent to 76 percent of the six years.
Disturbed by the sound of silence, scientists try to understand the long -term damage caused by the “point” and the similar anomaly that is believed to double three times since the 1940s, according to the port.
“There are complete consequences for the ecosystem of these marine thermal waves,” said Kelly Benoit Bird, the author, the study participating in the study and marine biology in Monterey Pay. “If they cannot find food, and they can pass the western coast of the entire North America, this is a really wide result.”
The longer feed period leads to a lower reproductive voltage by marine species, creating a smaller group of blue whale.
“Where are they, and what they do can tell you a lot about the authenticity of the ecosystem,” said the environment scientist at Regon University at National Geographic. “The point has really highlighted the extent of the extent that these consequences could be.”
She said: “Science shows that climate change affects the oceans,” listening and learning from these places is necessary for our future. Now more than ever, it is important to listen. “
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