Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Titre : Local bacteria help native seeds take root in arid landscapes

Dryland ecosystems cover about 40% of land on earth and support more than 2 billion people, and, once degraded—through overgrazing or inadequate irrigation—they are difficult to restore. One technique for restoring ecosystems with native plants "direct seeding" is promising, but has many drawbacks.

Phys.org/news (OCTOBER 20, 2022)

Présentation
Dryland ecosystems cover about 40% of land on earth and support more than 2 billion people, and, once degraded—through overgrazing or inadequate irrigation—they are difficult to restore. One technique for restoring ecosystems with native plants "direct seeding" is promising, but has many drawbacks.

Since one of the potential issues of degraded drylands is an absence of native microorganisms in the soil, the research team acquired native bacteria from undisturbed sites and grew them. They then introduced them to soil pellets that contained the seeds of native plants—a spinifex and the fire wattle (an acacia)—and planted them in degraded drylands.

Source  : Jesse Hawley, University of New South Wales

Annonce (Phys.org/news)