Title | Tree effects on grass growth in savannas: competition, facilitation and the stress-gradient hypothesis |
Publication Type | Journal Article |
Year of Publication | 2013 |
Authors | Dohn J, Dembélé F, Karembé M, Moustakas A, Amévor KA, Hanan N |
Journal | Journal of Ecology |
Volume | 101 |
Pagination | 202-209 |
Accession Number | JRN00619 |
Keywords | Africa, competition, facilitation, hypothesis, North America, plant–plant interactions, rainfall gradient, savanna, stress-gradient hypothesis, tree–grass interactions |
Abstract | 1. The stress-gradient hypothesis (SGH) predicts an increasing importance of facilitative mechanisms relative to competition along gradients of increasing environmental stress. Although developed across a variety of ecosystems, the SGH’s relevance to the dynamic tree–grass systems of global savannas remains unclear. Here, we present a meta-analysis of empirical studies to explore emergent patterns of tree–grass relationships in global savannas in the context of the SGH. |
URL | files/bibliography/JRN00619.pdf |
DOI | 10.1111/1365-2745.12010 |