Details

Autor(en) / Beteiligte

• See, Craig R.
• Luke McCormack, Michael
• Hobbie, Sarah E.
• Flores‐Moreno, Habacuc
• Silver, Whendee L.
• Kennedy, Peter G.
• Gessner, Mark

Titel

Global patterns in fine root decomposition: climate, chemistry, mycorrhizal association and woodiness

Ist Teil von

• Ecology letters, 2019-06, Vol.22 (6), p.946-953

Ort / Verlag

England: Blackwell Publishing Ltd

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Wiley Online Library

Beschreibungen/Notizen

• Fine root decomposition constitutes a critical yet poorly understood flux of carbon and nutrients in terrestrial ecosystems. Here, we present the first large‐scale synthesis of species trait effects on the early stages of fine root decomposition at both global and local scales. Based on decomposition rates for 279 plant species across 105 studies and 176 sites, we found that mycorrhizal association and woodiness are the best categorical traits for predicting rates of fine root decomposition. Consistent positive effects of nitrogen and phosphorus concentrations and negative effects of lignin concentration emerged on decomposition rates within sites. Similar relationships were present across sites, along with positive effects of temperature and moisture. Calcium was not consistently related to decomposition rate at either scale. While the chemical drivers of fine root decomposition parallel those of leaf decomposition, our results indicate that the best plant functional groups for predicting fine root decomposition differ from those predicting leaf decomposition.