Birds and wind farms/climate change

General birdwatching discussion, help with bird identification, and all other things relating to wild birds and birding in NZ that don't fit in one of the other forums.
Jim Kirker
Posts: 142
Joined: Wed Jan 04, 2017 8:54 pm

Re: Birds and wind farms/climate change

Postby Jim Kirker » Sat Feb 08, 2020 9:52 am

Selection experiments show they might evolve to adapt.
https://www.researchgate.net/publicatio ... dification
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Michael Szabo
Posts: 1451
Joined: Sun May 08, 2011 12:30 pm

Alarm over collapse of Chinstrap Penguin numbers

Postby Michael Szabo » Tue Feb 11, 2020 2:09 pm

"Colonies of chinstrap penguins have fallen by more than half across islands in Antarctica, prompting scientific concern that 'something is broken' in the world’s wildest ecosystem. After more than a month counting chicks in the South Shetland Islands, researchers suspect global heating is behind the sharp fall in numbers of the distinctive birds, which get their name from a black line that runs below the beak from cheek to cheek. Using drones and handheld clickers, the team of four scientists from Stony Brook University in the US found only 52,786 breeding pairs on Elephant Island, 58% fewer than in the last survey in 1971. The scientists also conducted a penguin census in the snow, fog and freezing rain of Low island, where preliminary figures indicated a similar scale of decline in what is believed to be the largest chinstrap population in Antarctica. It was the same story on Livingston island, where the team braved choppy seas to land by the rocks of Hannah Point and conduct a count that was far down from previous estimates. The full tally from each island will not be released until the expedition is completed, but the researchers said the trend was clear and disturbing; Chinstrap colonies are shrinking, leaving space for another species of penguin, the Gentoo, to move in."
- "Alarm over collapse of Chinstrap Penguin numbers ", Jonathan Watts, The Guardian, 11 February 2020.

Link to news report: https://www.theguardian.com/world/2020/ ... UoZGLG-Skg
'Birds New Zealand' Facebook group: https://www.facebook.com/Birdsnewzealand/
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Michael Szabo
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Joined: Sun May 08, 2011 12:30 pm

What does climate change mean for seabirds?

Postby Michael Szabo » Thu Feb 27, 2020 8:00 am

"In the last 35 years, marine heatwaves have doubled in frequency and will continue to become more commonplace as a result of climate change. The mass die-off of several species during 2015 and 2016 should serve as a wake-up call; two-thirds of the common murres that died were adults, meaning the breeding population took a massive hit. Breeding colonies failed to produce any chicks for years during and after the marine heatwave. Its highly likely that many other seabird and ocean-dwelling animals will also experience mass die-off, if not extinction, as the temperature of the oceans continues to rise due to global warming."

Link: https://www.azocleantech.com/article.as ... cleID=1055
'Birds New Zealand' Facebook group: https://www.facebook.com/Birdsnewzealand/
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Michael Szabo
Posts: 1451
Joined: Sun May 08, 2011 12:30 pm

Over 20% of Australia's forests burned in recent bushfires

Postby Michael Szabo » Thu Feb 27, 2020 12:46 pm

More than 20% of Australia’s forests burned during the summer’s bushfire catastrophe, a proportion scientists believe is unprecedented globally, according to new research. Research published in a special edition of Nature Climate Change focused on the bushfire crisis finds that 21% of the total area covered by Australian forests – excluding Tasmania - has burnt so far in the 2019-20 bushfire season. ... Australia's annual average forest loss to wild fires is typically well below 2%. Between September 2019 and January 2020 around 5.8 million hectares of broadleaf forest burned in New South Wales and Victoria. This accounts for roughly 21% of Australia's forested area, making this fire season proportionately the most devastating on record. That's ten years worth of Australia's average annual wildfire forest loss in just five months.

Link to news report: https://www.theguardian.com/australia-n ... -bushfires

Link to 'In the line of fire' in Nature Climate Change (2020): https://www.nature.com/articles/s41558-020-0720-5
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