Fig. 7
Principle Response Curves showing changes in vegetation composition over the course of the study as a result of prosopis treatments and restoration interventions in Kenya (a and c) and Tanzania (b and d). In each figure, the grey horizontal line through Y = 0 indicates the standardised control treatment, or unaided restoration treatment, and the other lines relative changes in species composition as a result of the treatments. In the top figures the dotted green, solid black, dashed red and solid grey lines indicate divoting, divoting and mulching, divoting, mulching and sowing treatments. In the bottom figures the dotted green, solid black, and dashed red lines indicate divoting, divoting and mulching, divoting, mulching and sowing treatments. Prosopis treatments explained 22.4% and 12.0% of the variation and restoration interventions 4.7% and 1.9% of the variation in vegetation composition in Kenya and Tanzania. Only species found on more than ten occasions (plots or plots x time) are shown