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Information about the provided data file

WM_anurans_phylogeny

The file “WM_anurans.nex” contains the phylogeny hypothesis employed in Nexus format. We used the tree of Roelants et al. 2007 as a time-scaled reference to calibrate the phylogeny of all amphibians (Pyron and Wiens 2011) using the function congruify.phylo (Eastman et al. 2013) of geiger R-package (Harmon et al. 2008). We then trimmed the ultrametric phylogeny obtained to match the list of taxa studied

Mean and standard deviation of δ¹³C and δ¹⁵N values for <i>B</i>. <i>calamita</i> (filled circles; n = 21), <i>D</i>. <i>pictus</i> (empty circles) and the controlled diet (filled triangles; n = 21).

<p>Mean and standard deviation of δ¹³C and δ¹⁵N values for <i>B</i>. <i>calamita</i> (filled circles; n = 21), <i>D</i>. <i>pictus</i> (empty circles) and the controlled diet (filled triangles; n = 21).</p

Generalized least squares model for effects of the variables species (<i>D</i>. <i>pictus</i> and <i>B</i>. <i>calamita</i>), pond condition (sharing or non-sharing), and the interaction between the two on stable isotope values (δ ¹⁵N and δ ¹³C).

<p>Generalized least squares model for effects of the variables species (<i>D</i>. <i>pictus</i> and <i>B</i>. <i>calamita</i>), pond condition (sharing or non-sharing), and the interaction between the two on stable isotope values (δ ¹⁵N and δ ¹³C).</p

δ¹³C and δ¹⁵N values and standard ellipse areas for the isotopic niches of <i>B</i>. <i>calamita</i> (A) and <i>D</i>. <i>pictus (B)</i> in each pond under non-sharing conditions.

<p>δ¹³C and δ¹⁵N values and standard ellipse areas for the isotopic niches of <i>B</i>. <i>calamita</i> (A) and <i>D</i>. <i>pictus (B)</i> in each pond under non-sharing conditions.</p

δ¹³C and δ¹⁵N values and standard ellipse areas for <i>B</i>. <i>calamita</i> and <i>D</i>. <i>pictus</i> in the four ponds where the species coexist (A-D).

<p>δ¹³C and δ¹⁵N values and standard ellipse areas for <i>B</i>. <i>calamita</i> and <i>D</i>. <i>pictus</i> in the four ponds where the species coexist (A-D).</p

δ¹⁵N and δ¹³C descriptive statistics for two species in shared and non-shared ponds.

<p>These statistics were evaluated from original isotopic values (without specific diet discrimination correction).</p><p>δ¹⁵N and δ¹³C descriptive statistics for two species in shared and non-shared ponds.</p

Mean ± SD (and range) of δ¹⁵N and δ¹³C values, and isotopic discrimination factors (Δ¹⁵N and Δ¹³C) of <i>D</i>. <i>pictus</i> and <i>B</i>. <i>calamita</i>.

<p>t-test for discrimination factors between species.</p><p>*Significant values at p<0.0001.</p><p>Mean ± SD (and range) of δ¹⁵N and δ¹³C values, and isotopic discrimination factors (Δ¹⁵N and Δ¹³C) of <i>D</i>. <i>pictus</i> and <i>B</i>. <i>calamita</i>.</p

Mean standard isotopic ellipse area for <i>B</i>. <i>calamita</i> and <i>D</i>. <i>pictus</i> under sharing and non-sharing niche conditions.

<p>Mean standard isotopic ellipse area for <i>B</i>. <i>calamita</i> and <i>D</i>. <i>pictus</i> under sharing and non-sharing niche conditions.</p

Characteristics of selected ponds.

<p>Characteristics of selected ponds.</p