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Silence is golden for marine life as COVID-19 lockdown reduces ocean noise: study--China Economic Net


A joint study by scientists from New Zealand and Canada showed that silence is golden for marine life as COVID-19 lockdown slowed global shipping and reduced ocean noise.
 
As New Zealand s first COVID-19 lockdown began on March 26, 2020, the country s busiest coastal waterway, the Hauraki Gulf, became devoid of almost all non-essential vessels and noise levels plunged.
 
That first lockdown really did give us an unprecedented opportunity to measure or quantify the effects of human activity on marine life, said University of Auckland marine scientist Associate Professor Craig Radford. So we decided to take a look at the response of our marine organisms in this new, relatively calm world. ....

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Silence is golden for marine life as COVID-19 lockdown reduces ocean noise: study - World News


2021-07-22 01:35:16 GMT2021-07-22 09:35:16(Beijing Time) Xinhua English
WELLINGTON, July 22 (Xinhua) A joint study by scientists from New Zealand and Canada showed that silence is golden for marine life as COVID-19 lockdown slowed global shipping and reduced ocean noise.
As New Zealand s first COVID-19 lockdown began on March 26, 2020, the country s busiest coastal waterway, the Hauraki Gulf, became devoid of almost all non-essential vessels and noise levels plunged.
That first lockdown really did give us an unprecedented opportunity to measure or quantify the effects of human activity on marine life, said University of Auckland marine scientist Associate Professor Craig Radford. So we decided to take a look at the response of our marine organisms in this new, relatively calm world. ....

New Zealand , New Zealand General , Hauraki Gulf , Craig Radford , University Of Auckland , Canada University Of Victoria , Associate Professor Craig , Professor Radford , Global Change Biology , புதியது ஜீலாந்து , கிரேக் ராட்போர்டு , பல்கலைக்கழகம் ஆஃப் ஆக்லாந்து , கனடா பல்கலைக்கழகம் ஆஃப் விக்டோரியா , இணை ப்ரொஃபெஸர் கிரேக் , ப்ரொஃபெஸர் ராட்போர்டு , உலகளாவிய மாற்றம் உயிரியல் ,

Lockdown study of Hauraki Gulf shows dolphins communicate better with fewer boats


“Key data from this study provides strong evidence that small vessels, where there are enough of them, directly influence sound levels and are definitely having an impact.”
Noise pollution is known to have deadly effects on marine life, such as those which use sound for life-critical behaviours like mate selection and predator warnings.
The study, which was published in the
Global Change Biology scientific journal in collaboration with Dr Matthew Pine from the University of Victoria in Canada, saw data gathered from acoustic recording stations at five sites in the Hauraki Gulf.
Between February and May 2020, six samples per hour – or 144 samples a day – were gathered and split into lockdown and pre-lockdown categories. ....

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