STAND DYNAMICS, NITROGEN ACCUMULATION, AND SYMBIOTIC NITROGEN FIXATION IN REGENERATING STANDS OF ACACIA KOA

By Holly L. Pearson, P. Vitousek. 2001

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The Nitrogen Paradox in Tropical Forest Ecosystems (2009, background): “Studies of Acacia koa in Hawaii show that BNF can drop rapidly after stand-level disturbance and is coincident with increasing soilbioavailable N (Pearson & Vitousek 2001)—which is, again, consistent with facultative fixation.”
Greater root phosphatase activity in nitrogen‐fixing rhizobial but not actinorhizal plants with declining phosphorus availability (2017, background): “Nitrogen-fixing plants tend to down-regulate N fixation when soil N is not limiting (e.g. Baker, Hill & Parsons 1997; Hartwig 1998; Pearson & Vitousek 2001; Barron, Purves & Hedin 2011).”
Allelopathy: a tool for weed management in forest restoration (2012, background): “Some planted trees can also affect growth of understory plants through their effects on nutrient availability (Ashton et al. 2008; Dakora and Phillips 2002; Pearson and Vitousek 2001) and soil pH (Haynes 1983).”
Legumes: Importance and Constraints to Greater Use (2003, background): “Such a build-up in soil N is probably not open ended, because Pearson and Vitousek (2001) noted a 10- to 20-fold decline in nodule mass and N fixation between 6- and 20-yearold regenerating stands of Acacia koa.”