Roadkill in the Brazilian Cerrado Savanna: Comparing Five Highways in Southwestern Goiás

Miranda, Jefferson Eduardo Silveira; Umetsu, Ricardo Keichi; Melo, Fabiano Rodrigues de; Melo, Fabiana Cristina Silveira Alves de; Pereira, Kleber Fernando; Oliveira, Seixas Rezende

doi:10.4257/oeco.2017.2103.10

Cited by 22 publications

(14 citation statements)

References 24 publications

(48 reference statements)

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“…Values above the upper confidence limit (grey line) indicate significant clustering of roadkill with those observed in other studies (Brum, Santos-Filho, Canale, & Ignácio, 2018;Coelho et al, 2008;Vargas-Salinas, Delgado-Ospina, & López-Aranda, 2011). However, we found that herpetofauna is affected the most whereas in other studies (Coelho et al, 2008;Miranda et al, 2017;Teixeira, Coelho, Esperandio, Rosa Oliveira, et al, 2013) (Sosa & Schalk, 2016). In addition, amphibian and reptile mortality could have been underestimated in other studies due to sampling method and effort (Ratton, Secco, & da Rosa, 2014;Teixeira, Coelho, Esperandio, Rosa Oliveira, et al, 2013).…”

Section: Discussioncontrasting

confidence: 52%

Wildlife roadkill patterns in a fragmented landscape of the Western Amazon

Filius

Hoek

Jarrín‐V

et al. 2020

Ecology and Evolution

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One of the most evident and direct effects of roads on wildlife is the death of animals by vehicle collision. Understanding the spatial patterns behind roadkill helps to plan mitigation measures to reduce the impacts of roads on animal populations. However, although roadkill patterns have been extensively studied in temperate zones, the potential impacts of roads on wildlife in the Neotropics have received less attention and are particularly poorly understood in the Western Amazon. Here, we present the results of a study on roadkill in the Amazon region of Ecuador; a region that is affected by a rapidly increasing development of road infrastructure. Over the course of 50 days, in the wet season between September and November 2017, we searched for road‐killed vertebrates on 15.9 km of roads near the city of Tena, Napo province, for a total of 1,590 surveyed kilometers. We recorded 593 dead specimens, predominantly reptiles (237 specimens, 40%) and amphibians (190, 32%), with birds (102, 17%) and mammals (64, 11%) being less common. Recorded species were assigned to three functional groups, based on their movement behavior and habitat use (“slow,” “intermediate,” and “fast”). Using Ripley's K statistical analyses and 2D HotSpot Identification Analysis, we found multiple distinct spatial clusters or hotspots, where roadkill was particularly frequent. Factors that potentially determined these clusters, and the prevalence of roadkill along road segments in general, differed between functional groups, but often included land cover variables such as native forest and waterbodies, and road characteristics such as speed limit (i.e., positive effect on roadkill frequency). Our study, which provides a first summary of species that are commonly found as roadkill in this part of the Amazon region, contributes to a better understanding of the negative impacts of roads on wildlife and is an important first step toward conservation efforts to mitigate these impacts.

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Section: Discussioncontrasting

confidence: 52%

Wildlife roadkill patterns in a fragmented landscape of the Western Amazon

Filius

Hoek

Jarrín‐V

et al. 2020

Ecology and Evolution

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“…The lack of interaction between season and taxa indicates that both endothermic and exothermic animals were equally influenced, and the mechanisms of innate thermal regulation and behaviors associated are not the main drivers of roadkill events. However, studies in other regions found specific higher mortality for reptile or mammals during the rainy season (Miranda et al, 2017, Abra et al, 2021, respectively). The number of roadkills tended to decrease with increases in precipitation and temperatures, similar to other studies (Ruiz‐Capillas et al, 2014 but see Ferreguetti et al, 2020).…”

Section: Discussionmentioning

confidence: 93%

Three‐year monitoring of roadkill trend in a road adjacent to a national park in Panama

Gálvez

2021

Biotropica

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Road networks bring multiple negative effects for biological conservation, including habitat fragmentation, habitat loss, chemical, and noise pollution (Van der Ree et al., 2015). Moreover, roads may directly impact animals by causing changes in home ranges, movement, escape behavior, and possibly even their physiology (Trombulak & Frissell, 2000). One of the most obvious impacts of road networks is wildlife roadkills, which is one of the major sources of vertebrate mortality globally (Hill et al., 2019). However, for many countries, roadkill research is practically non-existing (Schwartz et al., 2020), such as the case of Central America (Pinto et al., 2020). Therefore, there is a substantial underestimation of the impacts of road networks on biodiversity in the region.Understanding the spatial and temporal patterns that influence mortality of wildlife provides the basis for mitigating wildlife threats in areas of ecological importance. Given that roadkill risk depends on multiple

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“…Coordinated efforts among research teams to plan and document efforts and to share observations and results will help, as will alternative documentation of bush dog presence. Efforts to record road kills (e.g., Miranda et al, 2017), and use of other noninvasive techniques such as detection dogs and genetic analyses of scats (DeMatteo et al, 2014) could help initiate efforts in new places as well as confirm other observations. In addition, the use of interviews to gather knowledge from local people (e.g., Benchimol, von Mu¨hlen, & Venticinque, 2017) might be especially helpful in the Talamanca Mountains where indigenous reserves comprise nearly half of the forested habitat there but also in rural areas that are on the surrounding of protected areas and indigenous territories.…”

Section: Discussionmentioning

confidence: 99%

Bush Dogs in Central America: Recent Range Expansion, Cryptic Distribution, or Both?

Sáenz‐Bolaños

Fuller

Mooring

et al. 2019

Tropical Conservation Science

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Bush dogs (Speothos venaticus) are a small, wide-ranging neotropical pack-hunting canid whose ecology is relatively poorly known. Here, we document new, repeated observations of bush dog groups in east-central (Barbilla National Park) and south-eastern (La Amistad International Park) Costa Rica that suggest either that their recent or historic range has been underestimated, or that their potential range in Central America may have recently expanded and could now include not only borderlands with Panama but perhaps a substantial portion of the Talamanca Mountains up to 120 km to the northnorthwest and at elevations up to 2,119 m. In light of their inherently low density, documenting the current and future distribution of bush dogs in Central America will be challenging.

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Roadkill in the Brazilian Cerrado Savanna: Comparing Five Highways in Southwestern Goiás

Cited by 22 publications

References 24 publications

Wildlife roadkill patterns in a fragmented landscape of the Western Amazon

Wildlife roadkill patterns in a fragmented landscape of the Western Amazon

Three‐year monitoring of roadkill trend in a road adjacent to a national park in Panama

Bush Dogs in Central America: Recent Range Expansion, Cryptic Distribution, or Both?

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