William Stanley Harpole

Biotic modulators of global change effects on plant communities

The paper develops a framework to understand how biotic interactions modulate global change effects on plant communities and finds herbivores mitigate negative impacts while plant competition has mixed effects.

Nutrient enrichment and herbivore exclusion disrupt the climate-driven balance between C3 and C4 plants in grasslands

The paper shows that nutrient enrichment, especially with nitrogen and phosphorus, reduces C4 plant cover in grasslands, disrupting climate-driven C3-C4 balance globally.

Local nutrient addition drives plant biodiversity losses but not biotic homogenization in global grasslands

This study shows nutrient addition reduces plant diversity at local and larger scales equally, without causing biotic homogenization in global grasslands.