for - climate change impacts - marine life - citizen-science - potential project - climate departure - ocean heating impacts - marine life - marine migration - migrating species face collapse - migration to escape warming oceans - population collapse

main research findings - Study involved 146 species of temperate or subpolar fish and 2,572 time series - Extremely fast moving species (17km/year) showed large declines in population while - fish that did not shift showed negligible decline - Those on the northernmost edge experienced the largest declines - There is speculation that the fastest moving ones are the also the one's with the least evolutionary adaptations for new environments

Die globale Erhitzung zwingt Baumarten in den nördlichen Wäldern dazu, neue Habitate aufzusuchen, deren Böden oft weniger nährstoffreich sind. Ein Hauptgrund dafür, den eine neue Studie untersucht, sind die Bedürfnisse von Pilzen, mit denen diese Bäume in Symbiose leben.

Der Standard informiert über zwei Studien, die unter anderem den Zusammenhang von Stadtentwicklung und globaler Erhitzung betreffen. Vor allem in den USA wird für die Mehrzahl der großen Städte eine Schrumpfung vorausgesagt, verstärkt durch die Folgen der Erhitzung. Die Studie verwendet ist Szenarien des IPCC. Unter anderem ergibt sich daraus die Forderung, die Stadtplanung nicht mehr vor allem an der Vorstellung von wachsenden Städten auszurichten. https://www.derstandard.de/story/3000000203501/tausende-us-staedte-koennten-bis-2100-zu-geisterorten-werden

Bericht zu einer empirische Studie zu Binnen-Klimamigration in Thailand. Die Studie versucht der Komplexität der Ursachen wie der Folgen der Klimamigration für Haushalte gerecht zu werden.

https://www.derstandard.at/story/3000000202402/klimamigration-ist-weder-katastrophe-noch-allheilmittel

Studie: https://www.pnas.org/doi/10.1073/pnas.2206185120#sec-3

for - climate crisis - U.S. intra-country migration - key insight - climate migration - towards disaster zones

Bangladesch ist dem Climate Risk Index zufolge das am siebtstärksten von den Folgen der globalen Erhitzung betroffene Land. Bis zur Mitte des Jahrhunderts wird dort mit 20 Millionen Binnenflüchtlingen aufgrund der Erhöhung des Meeresspiegels gerechnet. Die Regierung vertritt die Interessen der wirtschaftlichen Elite und reagiert zunehmend mit harter Repression auf Opposition. Reportage über junge AktivistInnen in Bangladesch anlässlich der Wahlen, an denen die wichtigsten Oppositionsparteien nicht teilnehmen. https://www.repubblica.it/green-and-blue/2024/01/05/news/bangladesh_elezioni_cambiamento_climatico-421819356/

• for: future climate impacts, futures, climate impacts, preparedness, climate change - human migration, climate refuge, climate departure, Camilo Mora

• comment

  • There will be massive human migration
  • Europe is already unable to cope with the migration of a million climate refugees from Syria
  • The US is polarized due to mass migration of a few people escaping climate crisis and violence in central and South America
  • Developed countries will be overwhelmed with climate refugees number in the millions or tens of millions
  • In addition to human migration, the migration of species seeking cooler temperatures will fundamentally reshape our economies
  • climate departure is the date when local climate goes outside normal historical bounds and locally adapted species do not recognize it anymore and will be forced to migrate to survive
  • climate departure is a huge issue that is going to happen, regardless of which decarbonoization path we take. This means all species on the globe will be undergoing dramatic environmental shifts, making mass extinction more likely.

• reference

  • Dr. Camilo Mora et al. seminal 2013 paper on climate departure: https://hyp.is/go?url=https%3A%2F%2Fbafybeihfoajtasczfz4s6u6j4mmyzlbn7zt4f7hpynjdvd6vpp32zmx5la.ipfs.dweb.link%2FTheprojectedtimingofclimatedeparture2013.pdf&group=vnpq69nW

As climate departure is projected to occur under all IPCC RCP scenarios, this implies profound changes will take place everywhere on the planet.

The biosphere will react to this unprecedented shift in equally unprecedented ways. Each species has a comfort zone temperature band to exist within. If the temperature falls outside that zone, it can remain in place and adapt, shift geographical location (migration) or go extinct.

In an ecosystem, species all depend on each other. When a number of these shift their patterns, it will affect the others, increasing total ecosystem disruptions. Since human activity is dependent on nature, this will also ripple up to humans in a variety of ways.

There's a racial divide here, too. With harassment and violence on the rise against Black and Asian Americans, moving anywhere where there are fewer of us is another dimension of precarity.