Mastodawn

https://www.theguardian.com/environment/2026/mar/24/epic-river-migrations-of-fish-rapidly-collapsing-un-report-finds. "Such #fish #migrations happen in #rivers across the world - #salmon & #eels are more familiar examples - but many are rapidly collapsing, according to the most comprehensive assessment to date. The analysis, by the UN’s convention on the conservation of migratory species (CMS)... found #freshwater fish #populations #worldwide have crashed by about 81% since 1970."

Epic river migrations of fish rapidly collapsing, UN report finds

Vast journeys, among world’s great wonders, found to be under threat as freshwater fish populations crash by 81%

The Guardian

Centre for Population Change 4d ago

📋 Come along this Thursday 26 March to our next #CPCCGWebinar with Joseph Harrison from the University of #Salford.

Joseph will discuss a key finding in #migrant #healthresearch: although foreign‑born #populations often live longer, they may spend more of those extra years in poorer health. Using #Swedish #administrativedata, Joseph offers a clearer picture by relying on objective #patientrecords rather than self‑reported #health.

#morbidity

Centre for Population Change Mar 19

"Kuang argues that the focus needs to shift entirely: away from trying to fix #ageing #populations demographically, toward dealing with its challenges directly"

CPC-CG member Dr Bernice Kuang contributes to 'The baby letter', an article examining France’s new '#demographicrearmament' plan, which includes sending letters to all 29‑year‑olds urging them to think about #fertility alongside broader #reproductivehealth measures: https://thegloriousletter.com/the-baby-letter/

#fertility #demographicchange #ageingsocieties

The baby letter

You’re 29 years old. A letter arrives. It’s from your government, and it reminds you that you won’t be fertile forever, and if you want to have children, you should start thinking about it now.

The Glorious Letter

Farista Sairuv Mar 15

Three #dollars is #all it would take to #protect these #majestic and #beautiful #monkey #populations from #poaching. #poachers
https://www.fauna-flora.org/appeals/save-red-shanked-doucs/?source_code=SDENW26-RSDVCH&utm_medium=email&utm_source=enews&utm_campaign=20250311-redshankeddouc&frequency=single&default_currency=CAD&GBP_single_default_option=option_2&GBP_single_amounts=[45,15,3]&USD_single_default_option=option_2&USD_single_amounts=[45,15,3]&EUR_single_default_option=option_2&EUR_single_amounts=[45,15,3]&CAD_single_default_option=option_2&CAD_single_amounts=[45,15,3]&AUD_single_default_option=option_2&AUD_single_amounts=[45,15,3]

Help save the incredible red-shanked douc

Red shank doucs are known as the ‘Queen of Primates', but today they're being stolen from their kingdom. Your donations could help stop this.

Fauna & Flora

Centre for Population Change Mar 10

📝 In every issue of Changing Populations, we share a #PhD journey from one of our members. This time, Shu Li, a PhD student in the Department of #SocialStatistics and #Demography, University of Southampton, gives us insight into her research career.

Her #doctoral project focuses on ‘#Socialmedia and #fertility behaviour among the #reproductive-age group: Evidence from #China’.

Read the full article in our 'Researcher spotlight' in section 10 of Changing #Populations: https://sway.cloud.microsoft/WzAYgcw05ELXCdXJ?ref=Link

Soh Kam Yung Feb 19

"Using drone surveys and 15 years of nesting data, scientists at Queen Mary University of London report that booming nest counts could be misleading. As global warming causes temperatures to rise, more sea turtle eggs are developing into females. Without enough males, even a seemingly thriving population can collapse. Their findings, which are yet to be peer-reviewed, were posted January 20 to bioRxiv.org."

https://www.sciencenews.org/article/sea-turtle-population-collapse

#Nature #Reptiles #Turtles #Populations #Surveys

A sea turtle boom may be hiding a population collapse

In Cape Verde, conservation has boosted the sea turtle population 100-fold — but the male-female balance is way off.

Science News

TinJar Feb 17

www.ft.com/content/3c15... "50,000km of high-speed #rail, enough track to circle the globe, compared with 8,500km in the whole of the #EU as of 2023. Just over two decades after it was launched, the network now links 97 per cent of #cities with #populations of more than half a million" #degrowth

China’s high-speed rail networ...