Patterns of diet quality according to species, periods and nutrients.

<p>A. Position of herbivore species and period on the two first axes of the between-PCA performed on the analyses of rumen nutrient content. “P1” stands for Period 1 and “P2” for Period 2, “Cha” for Chamois, “Mou” for Mouflon, “Roe” for Roe deer, and “Red” for Red deer. Grey stars relate individual points for a given species and period to its gravity center. The shift in gravity centres from period 1 to period 2 is indicated by a coloured line for each species. B. Contribution of each chemical component to the between PCA. “N” stands for “Nitrogen”, “SF” for “Soluble Fraction”, “Lig” for “Lignine”, “Cel” for “Cellulose”, and “Hem” for “Hemicellulose”. C to G. Variations in the percent of “Nitrogen”, “Soluble Fraction” “Lignine”, “Cel” for “Cellulose”, and “Hem” for “Hemicellulose” respectively dry matter according to date for the four herbivore species as predicted from the best models.