Facultative nitrogen fixation by canopy legumes in a lowland tropical forest

The Nitrogen Paradox in Tropical Forest Ecosystems

(2010) Lars O. Hedin et al.   Annual Review of Ecology Evolution and Systematics

Nitrogen cycling and feedbacks in a global dynamic land model

(2010) Stefan Gerber et al.   GLOBAL BIOGEOCHEMICAL CYCLES

Facultative versus Obligate Nitrogen Fixation Strategies and Their Ecosystem Consequences

(2009) Duncan N. L. Menge et al.   AMERICAN NATURALIST

Nitrogen fixation in different biogeochemical niches along a 120 000-year chronosequence in New Zealand

(2009) Duncan N. L. Menge et al.   ECOLOGY

A unifying framework for dinitrogen fixation in the terrestrial biosphere

(2008) Benjamin Z. Houlton et al.   NATURE

Molybdenum limitation of asymbiotic nitrogen fixation in tropical forest soils

(2008) Alexander R. Barron et al.   Nature Geoscience