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Increased grazing pressure threatens the most arid rangelands (NOVEMBER 24, 2022)

Titre : Increased grazing pressure threatens the most arid rangelands

A new study published in Science reports results from the first-ever global field assessment of the ecological impacts of grazing in drylands. An international research team has found that grazing can have positive effects on ecosystem services, particularly in species-rich rangelands, but these effects turn to negative under a warmer climate. (NOVEMBER 24, 2022)

Grazing is an essential land use that sustains the livelihood of billions of people and is tightly linked to many UN Sustainable Development Goals. Grazing is particularly important in drylands, which cover about 41% of the Earth’s land surface, and host one in three humans inhabiting our planet and over 50% of all livestock existing in our planet.

Researchers found that the relationships between climate, soil conditions, biodiversity and the ecosystem services measured varied with grazing pressure. "The effects of increasing grazing pressure on ecosystem services were mostly negative in warmer drylands. These results highlight the importance of managing grazing locally, to cope with ongoing climate change in drylands, a particularly important issue in oak woodlands (montados) that we studied in Portugal and were part of this work," points out Dr. Alice Nunes

Source  : University of Lisbon

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Page publiée le 14 janvier 2023