1)
Transplant experiments inside and outside of National Park : seedlings of ecto- and non-ectomycorrhizal species grown in nutrient poor and rich sites, the former with and without high abundances of ectomycorrhizal adults trees.

2)
Transplanted seedlings into selected locations with known light levels at forest floor; monitoring of growth and survival, with soil water potential measurements. Demography of marked quadrats of existing tree seedlings.

3)
Designed experiments with shade houses in which amount of PAR light and quality of light (red/far-red) are altered factorially with phosphorus levels and treatments of drought (in dry season) or irrigation; comparison of the two groups of species.

4)
Small scale fertilization experiments of seedlings in forest to test for phosphate limitation to growth, especially at critical light release levels. Further experimentation on light x phosphorus interactions in open trials for silviculture.

5)
Environmental measurements of light (PAR) and soil water potentials (dry season) over two years in field (natural forest) and plantation. Plant water potential estimates; studies of species' susceptibility to water stress.

6)
Detailed ecophysiological experimentation under controlled conditions in Europe of the key species : special emphasis on light x phosphorus and water availability interactions: experiments to mirror those in 2).

7)
Experimentation in Europe on the efficacy of ectomycorrhizal infection and role in nutrient and water physiology; further culture work.

8)
Mineral nutrition of ecto- and non-ectomycorrhizal species in field; modelling differences in responses between two groups to environmental factors; determining critical threshold levels for growth.

1)
An enhanced understanding of the adaptations of ectomycorrhizal tropical legume trees to conditions of low soil fertility, seasonal water stress and the optimal levels and quality of light required for their regeneration.

2)
To make recommendations for the silviculture of these species and for their management in logged forests based on an optimization model.

3)
To further understanding of the ecology of these species in African forests with regard to their conservation for genetic seed stocks.