RT info:eu-repo/semantics/bookPart
T1 Using camera-trap data to simultaneously estimate Jaguar (Panthera onca) density and resource selection in the Paraguayan dry chaco
A1 Thompson, Jeffrey James
A1 Velilla, Marianela
A1 Cabral Beconi, Hugo Enrique
A1 Cantero, Nicolás
A1 Rojas Bonzi, Viviana Beatriz
A1 Brítez, Evelyn
A1 Campos Krauer, Juan M.
A1 McBride Jr., Roy T.
A1 Ayala Martínez, Rodrigo Sebastián
A1 Galluppi Selich, Tatiana
A1 Benítez Riveros, Camilo
A1 Ferreira Riveros, Marcela
A1 Achón, Belén
A1 Cartes Yegros, José Luis
A2 Guyra Paraguay
AB Habitat loss and human-caused mortality have led to an approximate 50% reduction of the distribution of the jaguar (Panthera onca). The large contraction in the jaguar’s occurrence points to a need to understand its population size and habitat preferences to apply to the species’ conservation. Typically, jaguar densities are estimated with capture–recapture modeling of photographic captures of individually identifiable individuals, while habitat selection is estimated from telemetry data. However, advances in spatial capture-recapture modeling now permit the simultaneous estimation of density and habitat selection based solely upon photographic detection data from camera-trapping grids. Here, we used data from 356 double camera-trap stations across five sites in the Paraguayan Dry Chaco to simultaneously estimate jaguar density and resource selection. We found that jaguar densities ranged from 0.58 to 1.39 individuals/100 km2. At the spatial scale of our analysis, jaguars showed a strong preference for forest cover, while space use was not affected by the Human Footprint Index. Our density estimates were consistent with previous estimates based upon a subset of our data, as well as with estimates for jaguar populations in other dryland ecosystems. Furthermore, the strong selection for forest was also consistent with range-wide patterns in jaguar space use and habitat selection derived from telemetry data. Due to extensive and ongoing deforestation in the Dry Chaco, combined with high human-caused mortality, the jaguar is critically endangered in Paraguay. Although we show that jaguars can persist in anthropogenically altered landscapes in Paraguay, their long-term survival at the national level is strongly dependent upon the effective enforcement of the national jaguar conservation law, and application of the national jaguar management plan, to mitigate negative population effects from habitat loss and human-caused mortality.
PB Springer, Cham
SN 978-3-031-39566-6
YR 2023
FD 2023-11-02
LK http://hdl.handle.net/20.500.14066/4510
UL http://hdl.handle.net/20.500.14066/4510
LA eng
NO Thompson, J. J., Velilla, M., Cabral, H., Cantero, N., Rojas Bonzi, V., Brítez, E., Campos Krauer, J. M., McBride Jr, R. T., Ayala, R., Galluppi Selich, T., Benítez Riveros, C., Ferreira Riveros, M., Achón B., & Cartes, J. L. (2023). Using camera-trap data to simultaneously estimate Jaguar (Panthera onca) density and resource selection in the Paraguayan dry chaco. En S. Mandujano, E. J. Naranjo & G. P. Andrade Ponce (Eds.). Neotropical Mammals (pp. 237-256). Springer, Cham.https://doi.org/10.1007/978-3-031-39566-6_10
NO Consejo Nacional de Ciencia y Tecnología
DS MINDS@UW
RD 30-ene-2025