Carbon and nitrogen stable isotope values, and C/N atomic values for <i>Mellopsis doucasae</i>.

<p>Mean ± standard deviation of (a) <i>δ</i>¹⁵N, (b) <i>δ</i>¹³C, and (c) C/N atomic values from the following treatments: Fuel Et. 15—preserved in fuel ethanol for 15 days; Fuel Et. 60—preserved in fuel ethanol for 60 days; Com.Et. 15—preserved in 92.8% commercial ethanol for 15 days; Com.Et. 60—preserved in 92.8% commercial ethanol for 60 days; Frozen 15—frozen for 15 days; Frozen 60—frozen for 60 days; Control—freshly processed material (highlighted in gray). Different letters indicate significant differences between treatment groups (P < 0.05). All preservation methods resulted in significant ¹⁵N depletion compared to controls.</p

Carbon and nitrogen stable isotope values, and C/N atomic values for <i>Phoremia</i> sp.

<p>Mean ± standard deviation of (a) <i>δ</i>¹⁵N, (b) <i>δ</i>¹³C, and (c) C/N atomic values from the following treatments: Fuel Et. 15—preserved in fuel ethanol for 15 days; Fuel Et. 60—preserved in fuel ethanol for 60 days; Com. Et. 15—preserved in 92.8% commercial ethanol for 15 days; Com. Et. 60—preserved in 92.8% commercial ethanol for 60 days; Frozen 15—frozen for 15 days; Frozen 60—frozen for 60 days; Control—freshly processed material (highlighted in gray). Different letters indicate significant differences between treatment groups (P < 0.05).</p

Representation of the <i>δ</i>¹³C and <i>δ</i>¹⁵N of prey (mean ± SD) and predators in sites with different riparian land uses.

<p>Representation of the <i>δ</i>¹³C and <i>δ</i>¹⁵N of prey (mean ± SD) and predators in sites with different riparian land uses.</p

Taxa used in each trophic group analyzed.

<p>The letter “n” indicates the number of samples. Different numbers of invertebrates were used for each sample to reach a minimal amount of material for isotope analysis.</p

Means of the proportions of macroinvertebrate prey consumed by predators in each land use category based on stable isotopes analysis in R (SIAR) output.

<p>Means of the proportions of macroinvertebrate prey consumed by predators in each land use category based on stable isotopes analysis in R (SIAR) output.</p

Layman stable isotope metrics (mean and 95% credible intervals) for each land use category: NR_b = <i>δ</i>¹⁵N range; CR_b = <i>δ</i>¹³C range; CD_b = mean distance to centroid; MNND_b = mean nearest neighbor distance; and SDNND_b = standard deviation of mean distance to centroid.

<p>Layman stable isotope metrics (mean and 95% credible intervals) for each land use category: NR_b = <i>δ</i>¹⁵N range; CR_b = <i>δ</i>¹³C range; CD_b = mean distance to centroid; MNND_b = mean nearest neighbor distance; and SDNND_b = standard deviation of mean distance to centroid.</p

Locations of the nine stream sites selected according to their land use and study area in the states of Minas Gerais and Goiás, Brazil.

<p>Locations of the nine stream sites selected according to their land use and study area in the states of Minas Gerais and Goiás, Brazil.</p