Trophic rewilding revives biotic resistance to shrub invasion

Jennifer Guyton, Johan Pansu, Tyler Kartzinel, Tyler Coverdale, Arjun Potter, Joshua Daskin, Matthew Hutchinson, Ana Gledis Da Conceição, Mike Peel, Marc Stalmans & Robert Pringle
Trophic rewilding seeks to rehabilitate degraded ecosystems by repopulating them with large animals, thereby reestablishing strong top-down interactions. Yet there are vanishingly few tests of whether such initiatives can restore ecosystem structure and functions, and on what timescales. Here we show that war-induced collapse of large-mammal populations in Mozambique’s Gorongosa National Park exacerbated woody encroachment by the invasive shrub Mimosa pigra—one of the world’s ‘100 worst’ invasive species—and that one decade of concerted trophic rewilding...
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