Midiateca

Modeling the risk of livestock depredation by jaguar alongthe Transamazon highway, Brazil

Autores

Elildo A.R. Carvalho Jr. a,  Martha M. Zarco-Gonzálezb,Octavio Monroy-Vilchisb,∗, Ronaldo G. Moratoa,c

Ano de Publicação
2015
Categoria
PESQUISA AVALIAÇÃO E MONITORAMENTO DA BIODIVERSIDADE
Descrição

Abstract

The jaguar is an endangered species in Brazil and one of the major threats is the hunting, sometimes as a result of livestockdepredation. Understanding the ecological and anthropogenic factors that favor the predation of livestock by jaguar can helpto reduce the number of attacks and thus, decrease cases of hunting in retaliation. We used field data on livestock depredationand environmental and anthropogenic variables to model the risk of depredation by jaguar along the Transamazon highway, afrontier region where ranching has been the main driver of deforestation. We used five algorithms and a final ensemble modelin order to obtain a map of depredation risk, as well as to identify the variables related with it. The variables most related withdepredation risk were distance to deforestation (negatively related) and cattle density (positively related). The major factorsdriving livestock depredation are related to anthropogenic disturbance, this means that the spatial distribution of risk is not astable feature, but is likely to change dynamically following shifts in the deforestation frontier and in the livestock herd. Basedon our results, it is reasonable to expect an increase in depredation of livestock in this area. The use of ecological niche modelingto identify potential hotspots of depredation of livestock is a recent innovation that holds potential to guide the allocation ofconservation and management efforts over large areas at relatively low costs.

Zusammenfassung

Der Jaguar ist eine gefährdete Art in Brasilien, und eine der wichtigsten Bedrohungen ist die direkte Bejagung, die zum Teileine Folge von Viehrissen ist. Die ökologischen und anthropogenen Faktoren zu verstehen, die Viehverluste durch den Jaguarbegünstigen, kann helfen, die Zahl der Angriffe zu reduzieren und damit die Fälle von vergeltender Bejagung. Wir nutztenDaten zu Viehrissen, Umweltvariablen und anthropogenen Faktoren, um das Risiko von Rissen durch den Jaguar entlang derTransamazônica zu modellieren, eine Grenzregion, in der die Weidewirtschaft der treibende Faktor der Abholzung ist. Wirbenutzten fünf Algorithmen und ein abschließendes Gesamtmodell, um eine Karte des Rissrisikos zu berechnen und die damitverbundenen Variablen zu identifizieren. Die am stärksten mit dem Rissrisiko verknüpften Variablen waren Entfernung zu∗

Tipo de publicação
Publicações periódicas (revistas, jornais, boletins)
Local da publicação
https://www.journals.elsevier.com/basic-and-applied-ecology
Nº da edição ou volume
 Basic and Applied Ecology 16(5) · March 2015
Editora
Elsevier - journal homepage: http://www.elsevier.com/locate/baae
Link