DOI: 10.5061/dryad.8sf7m0ctc
title: Callithrix aurita: Occurrence, allochthonous species and landscape attributes

description: The buffy-tufted-ear marmoset (Callithrix aurita) 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 Callithrix species. Using occurrence data
 for C. aurita from published data papers, we employed model selection
 using Akaike Information Criterion corrected for small samples and
 cumulative AICc weight (w+) to evaluate whether fragment size, distance to
 fragments with allochthonous species, altitude, connectivity, and
 surrounding matrices influence the occurrence of C. aurita within its
 distributional range. Distance to fragments with C. jacchus (w+ = 0.94)
 and non-vegetated areas (w+ = 0.59) correlated negatively with C. aurita
 occurrence. Conversely, the percentage of agriculture and pasture mosaic
 (w+ = 0.61) and the percentage of savanna formation (w+ = 0.59) in the
 surrounding matrix correlated positively with C. aurita occurrence. The
 findings indicate that C. aurita 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
 C. aurita 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 C.
 flaviceps, which is also endemic to the Brazilian Atlantic Forest and
 faces the same challenges.
description: The occurrence data was obtained by filtering 2 data
 papers: Rosa, C.A., Ribeiro, B.R.,
 Bejarano, V., Puertas, F.H., Bocchiglieri, A., Barbosa, A.L.S., Chiarello,
 A.G., Paglia, A.P., Pereira, A.A., Moreira, A.F.S., Souza, A.C.,
 Pellegrin, A., Gatica, A., Medeiro, A.Z., Pereira, A.D., Braz, A.G.,
 Yanosky, A., Valenzuela, A.E.J., ...Ribeiro, M.C. (2020). Neotropical
 alien mammals: a data set of occurrence and abundance of alien mammals in
 the Neotropics. <em>Ecology</em>, 101(11), e03115. https://doi.org/10.1002/ecy.3115 Culot, L., Pereira, L.A., Agostini, I., Almeida, M.A.B. de, Alves, R.S.C., Aximoff, I., Bager, A., Baldovino, M.C., Bella, T.R., Bicca-Marques, J.C., Braga, C., Brocardo, C.R., Campelo, A.K.N., Canale, G.R., Cardoso, J.C., Carrano, E., Casanova, D.C., Cassano, C.R., Castro, E., Cherem, J.J., …Galetti, M. (2019). Atlantic-Primates: a dataset of communities and occurrences of primates in the Atlantic Forests of South America. <em>Ecology</em>, 100(1), e02525. https://doi.org/10.1002/ecy.2525 We filtered by: study area (Minas Gerais, Rio de Janeiro, and São Paulo, states of <em>C. aurita</em> occurrence); by species (<em>C. aurita</em>, <em>C. penicillata</em>, and <em>C. jacchus</em>); by year (1985–2019); by location (only natural places); and by sampling method (only with empirical proof). Also, we selected the same amount of random points as control points. For the landscape analysis, we used QGIS and Fragstats to get: fragments area, connectivity (using two proxies: Euclidean nearest neighbor and Proximity index); mean and minimal distance to allochthonous species occurrence; mean altitude; and percentage of surrounding matrix types. 
description: The data is open using Excel or Libre office. To process the data
 you need to use: QGIS, Fragstats, and R software.