A common dolphin lined up on the UK beach
Waves and Welly Photo
Dolphins across the UK died in the 1980s, the combination of water temperature and toxic chemicals.
Polychlorin chloride vipenyl (PCB) is a long -lasting lasting chemical contaminant that is widely used in industrial manufacturing. They interfere with animal reproduction and immune response and cause. cancer To humans.
In a new study, researchers have shown that the higher level of PCB and sea level temperature have increased.Delphi Nus Del Fi), The first of marine mammals.
The sea is faced with climate change, pollution and biodiversity loss- “Triple planetary crisis”, but we often say we are seeing separation of threats. Rosie Williams At the London Animal Society.
Williams and her colleagues analyzed the post -data of 836 general dolphins stranded in the UK between 1990 and 2020 to assess the effects of these interconnected threats.
They have become fatal by increasing the probability of infectious diseases such as gastritis, enteritis, enteritis, bacterial infections, encephalitis and pneumonia per 1mm per kilogram. The risk of death was increased by 14 % at 1 ° C of sea level temperature.
According to the study, the threshold value of the PCB blueber concentration significantly affects the risk of dolphin’s disease was 22 mg/kg, but the average concentration of samples was higher at 32.15 mg/kg.
Dolphins last long lasting and are widely distributed around England and have a high food chain, so it is a good indicator that shows how threats can affect other animals.
“Their position at the top of the food web means that the toxins of the food accumulate in the blueber and provide a concentrated snapshot of chemical pollutants in the sea. Sex Dolphin Project.
Despite being internationally banned in 1981 and in 2001, the PCB is still washing with the sea. Williams said, “They are still in the environment through stockpile and will often be a by -product or by -product of other manufacturing processes.
Cleaning PCB is very difficult. “They are so persistent that they are removed,” she says. “There is definitely no easy modification.”
While some researchers explore dredging with cleaning technology, other researchers focus on removing continuous chemicals in water treatment plants.
Such discovery indicates what can happen if the effect of prohibiting the anti -fleeting group of perfluoroallykyl and polyfluoro alkyl materials (PFA), another broad group of so -called eternal chemicals, is not taken.
Taylor said, “It is important to prevent additional chemical input into the environment, but it cannot be overturned.
subject :
