Ecological Archives E093-014-A4

Etienne Laliberté and Jason M. Tylianakis. 2012. Cascading effects of long-term land-use changes on plant traits and ecosystem functioning. Ecology 93:145–155.

Appendix D (Fig. D1). Figure showing the relationship between specific leaf area and soil resource availability. Community-weighted specific leaf area (SLA) increased nonlinearly with soil resource availability. Soil resource availability corresponds to five levels of a P/S fertilizer: 0, 50, 100, 250, and 500 kg ha-1 yr-1, the highest also being irrigated. The relationship was modeled using a linear mixed model, with random intercepts per block and whole plot. First, second, and third-order polynomials of soil resource availability were used as the fixed predictors (R2 = 0.535, P < 0.0001). The black line shows a smoothed loess curve (span = 1.1) through the population fitted values.


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