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2 results for “allochthonous species”
Callithrix aurita: Occurrence, allochthonous species and landscape attributes
<p><span>The</span> <span>buffy-tufted-ear marmoset (<em>Callithrix</em> <em>aurita</em>) is a small primate endemic to the Brazilian Atlantic Forest biome, and one of the 25 most endangered primates in the world, due to fragmentation, loss of habitat and invasion by allochthonous <em>Callithrix</em> species. Using occurrence data for <em>C. aurita</em> from published data papers, we employed model selection using Akaike Information Criterion corrected for small samples and cumulative AICc weight (w<sub>+</sub>) to evaluate whether fragment size, distance to fragments with allochthonous species, altitude, connectivity, and surrounding matrices influence the occurrence of <em>C. aurita</em> within its distributional range. Distance to fragments with <em>C. jacchus</em> (w<sub>+</sub> = 0.94) and non-vegetated areas (w<sub>+</sub> = 0.59) correlated negatively with <em>C. aurita</em> occurrence. Conversely, the percentage of agriculture and pasture mosaic (w<sub>+</sub> = 0.61) and the percentage of savanna formation (w<sub>+</sub> = 0.59) in the surrounding matrix correlated positively with <em>C. aurita</em> occurrence. The findings indicate that <em>C. aurita</em> is isolated in forest fragments surrounded by potentially inhospitable matrices, along with proximity of a more generalist and invasive species, thereby increasing the possibility of introgressive hybridization. The findings also highlighted the importance of landscape elements and allochthonous congeneric species for <em>C. aurita</em> conservation, besides indicating urgency for allochthonous species management. Finally, the approach used here can be applied to improve conservation studies of other endangered species, such as <em>C. flaviceps</em>, which is also endemic to the Brazilian Atlantic Forest and faces the same challenges.</span></p>
Callithrix aurita: Occurrence, allochthonous species and landscape attributes
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