#trophic rewilding

[hope-for-the-planet]

The climate solution that not enough people are talking about

Why bringing back elephants, sharks and other beasts could be a surprisingly useful climate solution, and help keep the 1.5C target alive

“There’s a huge untapped potential to consider conserving animals as a climate solution. If you do some of the rough calculations, the numbers rival those of what the IPCC is right now promoting in terms of converting everything to solar or wind generation...the numbers are in the same ballpark”

This is called called “trophic rewilding”--many animal species naturally cycle carbon into the soil just by living their lives and restoring these species to their natural range can turn their ecosystems back into carbon sinks.

 “Fortunately, we have the technology to scrub CO2 from the atmosphere. It’s called nature.”

Looking at the list of environmental issues--pollution, climate change, species extinction, etc.--can feel overwhelming, but the reality is that nearly all of these issues are intimately connected. This is just one of many examples of how working on one issue also helps solve the others; if you conserve wildlife and restore habitat it also helps mitigate climate change.

(quotes from Oswald Schmitz)

[rjzimmerman]

Want to sequester carbon? Save wild animals.

Research shows protecting even a small number of animal species would help capture enough carbon to keep global warming below 1.5 degrees Celsius.

Excerpt from this story from Grist:

As the world increasingly turns toward natural climate solutions like reforestation and grassland restoration to sequester carbon, it may be overlooking a crucial ally: animals.

Protecting existing populations and restoring others to their natural habitats often improves the natural capture and sequestration of carbon dioxide within ecosystems, according to a study published today [March 27, 2023] in the journal Nature Climate Change. Robust populations of just nine species, such as sea otters or gray wolves, or genera, including whales, could lead to the capture of 6.41 gigatons of CO₂ annually, the researchers found. That’s about 95 percent of the amount needed to be removed annually to ensure global warming remains below 1.5 degrees Celsius (2.7 degrees Fahrenheit).

In “Trophic rewilding can expand natural climate solutions,” led by the Yale School of the Environment and the Global Rewilding Alliance, 15 international experts compare the carbon content in savannas, forests, and other ecosystems when their wildlife populations were healthy and when they were below historical numbers. They found multiple cases in which thriving populations of certain species, particularly large vertebrates, through acts like foraging, burrowing, and trampling, increased an ecosystem’s carbon storage capacity by as much as 250 percent.

The researchers argue that these essential species disperse seeds, facilitating the growth of carbon-sequestering trees and plants. Others trample or eat the vegetation that would otherwise rob those trees of space and nutrients. Predators prey on herbivores that, without predation, might adversely impact that essential fauna.