Direct and indirect effects of roads on space use by jaguars in Brazil

Abstract Roads pose an imminent threat to wildlife directly through mortality and changes in individual behavior, and also indirectly through modification of the amount and configuration of wildlife habitat. However, few studies have addressed how these mechanisms interact to determine species respo...

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Autores principales:	Rafaela Cobucci Cerqueira, Oscar Rodríguez de Rivera, Jochen A. G. Jaeger, Clara Grilo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/35c239304d9e4ec0977f08b34aba0b91
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id	oai:doaj.org-article:35c239304d9e4ec0977f08b34aba0b91
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spelling	oai:doaj.org-article:35c239304d9e4ec0977f08b34aba0b912021-11-21T12:21:16ZDirect and indirect effects of roads on space use by jaguars in Brazil10.1038/s41598-021-01936-62045-2322https://doaj.org/article/35c239304d9e4ec0977f08b34aba0b912021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01936-6https://doaj.org/toc/2045-2322Abstract Roads pose an imminent threat to wildlife directly through mortality and changes in individual behavior, and also indirectly through modification of the amount and configuration of wildlife habitat. However, few studies have addressed how these mechanisms interact to determine species response to roads. We used structural equation modeling to assess direct and indirect effects (via landscape modification) of roads on space use by jaguars in Brazil, using radio-tracking data available from the literature. We fit path models that directly link jaguars’ space use to roads and to land cover, and indirectly link jaguars’ space use to roads through the same land cover categories. Our findings show that space use by jaguars was not directly affected by roads, but indirect effects occurred through reductions in natural areas on which jaguars depend, and through urban sprawl. Males´ space use, however, was not negatively influenced by urban areas. Since jaguars seem to ignore roads, mitigation should be directed to road fencing and promoting safe crossings. We argue that planners and managers need to much more seriously take into account the deforestation and the unbridled urban expansion from roads to ensure jaguar conservation in Brazil.Rafaela Cobucci CerqueiraOscar Rodríguez de RiveraJochen A. G. JaegerClara GriloNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Rafaela Cobucci Cerqueira Oscar Rodríguez de Rivera Jochen A. G. Jaeger Clara Grilo Direct and indirect effects of roads on space use by jaguars in Brazil
description	Abstract Roads pose an imminent threat to wildlife directly through mortality and changes in individual behavior, and also indirectly through modification of the amount and configuration of wildlife habitat. However, few studies have addressed how these mechanisms interact to determine species response to roads. We used structural equation modeling to assess direct and indirect effects (via landscape modification) of roads on space use by jaguars in Brazil, using radio-tracking data available from the literature. We fit path models that directly link jaguars’ space use to roads and to land cover, and indirectly link jaguars’ space use to roads through the same land cover categories. Our findings show that space use by jaguars was not directly affected by roads, but indirect effects occurred through reductions in natural areas on which jaguars depend, and through urban sprawl. Males´ space use, however, was not negatively influenced by urban areas. Since jaguars seem to ignore roads, mitigation should be directed to road fencing and promoting safe crossings. We argue that planners and managers need to much more seriously take into account the deforestation and the unbridled urban expansion from roads to ensure jaguar conservation in Brazil.
format	article
author	Rafaela Cobucci Cerqueira Oscar Rodríguez de Rivera Jochen A. G. Jaeger Clara Grilo
author_facet	Rafaela Cobucci Cerqueira Oscar Rodríguez de Rivera Jochen A. G. Jaeger Clara Grilo
author_sort	Rafaela Cobucci Cerqueira
title	Direct and indirect effects of roads on space use by jaguars in Brazil
title_short	Direct and indirect effects of roads on space use by jaguars in Brazil
title_full	Direct and indirect effects of roads on space use by jaguars in Brazil
title_fullStr	Direct and indirect effects of roads on space use by jaguars in Brazil
title_full_unstemmed	Direct and indirect effects of roads on space use by jaguars in Brazil
title_sort	direct and indirect effects of roads on space use by jaguars in brazil
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/35c239304d9e4ec0977f08b34aba0b91
work_keys_str_mv	AT rafaelacobuccicerqueira directandindirecteffectsofroadsonspaceusebyjaguarsinbrazil AT oscarrodriguezderivera directandindirecteffectsofroadsonspaceusebyjaguarsinbrazil AT jochenagjaeger directandindirecteffectsofroadsonspaceusebyjaguarsinbrazil AT claragrilo directandindirecteffectsofroadsonspaceusebyjaguarsinbrazil
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Direct and indirect effects of roads on space use by jaguars in Brazil

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