Journal
TRENDS IN ECOLOGY & EVOLUTION
Volume 30, Issue 6, Pages 357-363Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tree.2015.03.015
Keywords
decomposition; feedback; litter; nutrient cycling; species effects
Categories
Funding
- Division Of Environmental Biology
- Direct For Biological Sciences [1234162] Funding Source: National Science Foundation
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In a review published over two decades ago I asserted that, along soil fertility gradients, plant traits change in ways that reinforce patterns of soil fertility and net primary productivity (NPP). I reevaluate this assertion in light of recent research, focusing on feedbacks to NPP operating through litter decomposition. I conclude that mechanisms emerging since my previous review might weaken these positive feedbacks, such as negative effects of nitrogen on decomposition, while others might strengthen them, such as slower decomposition of roots compared to leaf litter. I further conclude that predictive understanding of plant species effects on nutrient cycling will require developing new frameworks that are broadened beyond litter decomposition to consider the full litter soil organic matter (SOM) continuum.
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