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Results for "plant diversity"

Plant diversity predicts resistance to grazing pressure on drylands

KAUST · Mar 9

A KAUST-led study in *Nature Ecology & Evolution* finds that plant species diversity is the strongest predictor of dryland ecosystem resistance to grazing pressure, outperforming climate and soil factors. Analyzing 73 sites across 25 countries, researchers found that diverse plant communities better maintain vegetation cover under grazing. This is attributed to varied species responses distributing grazing pressure and buffering vegetation loss. Why it matters: The findings highlight the importance of biodiversity in maintaining the productivity and stability of dryland ecosystems, which support half of global livestock production and a billion people's livelihoods.

Study challenges assumptions about plant diversity in drylands

KAUST · Sep 5

A KAUST-led study reveals unexpectedly high functional diversity in arid and grazed dryland plants globally, examining traits like mineral element concentration in over 300 species across six continents. The research indicates that plants employ diverse adaptation strategies to aridity and grazing, with trait diversity increasing beyond a certain aridity threshold. More than half of the trait diversity was found in the most arid and grazed drylands, challenging the view that harsh conditions reduce plant diversity. Why it matters: This study highlights the ecological value of drylands and suggests plants possess unappreciated resilience to climate change, with implications for conservation and greening programs in regions like Saudi Arabia.