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Trophic rewilding revives biotic resistance to shrub invasion.
Guyton, Jennifer A; Pansu, Johan; Hutchinson, Matthew C; Kartzinel, Tyler R; Potter, Arjun B; Coverdale, Tyler C; Daskin, Joshua H; da Conceição, Ana Gledis; Peel, Mike J S; Stalmans, Marc E; Pringle, Robert M.
Afiliación
  • Guyton JA; Department of Ecology & Evolutionary Biology, Princeton University, Princeton, NJ, USA.
  • Pansu J; Department of Ecology & Evolutionary Biology, Princeton University, Princeton, NJ, USA.
  • Hutchinson MC; Station Biologique de Roscoff, UMR 7144 CNRS-Sorbonne Université, Roscoff, France.
  • Kartzinel TR; CSIRO Ocean & Atmosphere, Lucas Heights, New South Wales, Australia.
  • Potter AB; Department of Ecology & Evolutionary Biology, Princeton University, Princeton, NJ, USA.
  • Coverdale TC; Department of Ecology & Evolutionary Biology, Princeton University, Princeton, NJ, USA.
  • Daskin JH; Department of Ecology & Evolutionary Biology, Brown University, Providence, RI, USA.
  • da Conceição AG; Department of Ecology & Evolutionary Biology, Princeton University, Princeton, NJ, USA.
  • Peel MJS; Department of Ecology & Evolutionary Biology, Princeton University, Princeton, NJ, USA.
  • Stalmans ME; Department of Ecology & Evolutionary Biology, Cornell University, Ithaca, NY, USA.
  • Pringle RM; Department of Ecology & Evolutionary Biology, Princeton University, Princeton, NJ, USA.
Nat Ecol Evol ; 4(5): 712-724, 2020 05.
Article en En | MEDLINE | ID: mdl-31932702
Trophic rewilding seeks to rehabilitate degraded ecosystems by repopulating them with large animals, thereby re-establishing strong top-down interactions. Yet there are very 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-considered one of the world's 100 worst invasive species-and that one decade of concerted trophic rewilding restored this invasion to pre-war baseline levels. Mimosa occurrence increased between 1972 and 2015, a period encompassing the near extirpation of large herbivores during the Mozambican Civil War. From 2015 to 2019, mimosa abundance declined as ungulate biomass recovered. DNA metabarcoding revealed that ruminant herbivores fed heavily on mimosa, and experimental exclosures confirmed the causal role of mammalian herbivory in containing shrub encroachment. Our results provide mechanistic evidence that trophic rewilding has rapidly revived a key ecosystem function (biotic resistance to a notorious woody invader), underscoring the potential for restoring ecological health in degraded protected areas.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ecosistema / Conservación de los Recursos Naturales Límite: Animals Idioma: En Revista: Nat Ecol Evol Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ecosistema / Conservación de los Recursos Naturales Límite: Animals Idioma: En Revista: Nat Ecol Evol Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido