... positive effecton pine growth [7,24], may increase these natural inputs in twodifferent ways: (i) by increasing the abundance and biomass of N2-fixing shrubs [3]; and (ii) by increasing the N2fixationrate ... Saint-AndréL., Marlet S., Bouillet J.P., Nutrient cycling in a clonal stand of Eucalyptus and an adjacent savanna ecosystem in Congo. 3. Input-ouput budgets and consequences for the sustainability ... R.F., Binkley D., Ecology and management of forest soils,Wiley and sons, New York, 2000.[12] Gentili F., Huss-Danell K., Local and systemic effects of phospho-rus and nitrogen on nodulation and...