Variação espacial de atropelamentos de mamíferos em área de restinga no estado do Espírito Santo, Brasil

Ferreira, Cláudia Márcia Marily; Ribas, Augusto Cesar de Aquino; Casella, Janaína; Mendes, Sérgio Lucena

doi:10.4013/nbc.2014.93.02

Cited by 10 publications

(9 citation statements)

References 24 publications

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“…Leite and colleagues (2012), found a positive correlation between wild mammal roadkill and temperature in the south Brazil. Hegel and colleagues (2012) and Santana (2010) did not find correlations between wild mammal roadkill and climate variables.…”

Section: Discussionmentioning

confidence: 99%

“…Hegel and colleagues (2012) and Cáceres and colleagues (2012) found more mammal roadkills in the rainy season. On the other hand, Bueno and Almeida (2010) research found more roadkills in the dry season.…”

Section: Discussionmentioning

confidence: 99%

“…In Europe, USA and Canada some studies tried to understand this (CLEVENGER et al, 2003;GRILO et al, 2009;GRILO et al, 2012;D'AMICO et al, 2015;GARRIGA et al, 2017) and concluded that temperature influences roadkill (D'AMICO et al, 2015;GARRIGA et al, 2017). In Brazil, we have just started, our researches investigate if there are more roadkill in the rainy or dry season (BUENO; ALMEIDA, 2010;RAMOS et al, 2011;BRAZ;FRANÇA, 2016) or the stretches of the highway with higher roadkill rates (CÁCERES et al, 2012;BUENO et al, 2012;SANTANA, 2012;FERREIRA et al, 2014;CARVALHO et al, 2015;ASCENSÃO et al, 2017;SANTOS et al, 2017). We still need to understand better the influence of climate variables on roadkill in tropical countries, such as Brazil.…”

Section: Introductionmentioning

confidence: 99%

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Influence of climate variables on roadkill rates of wild vertebrates in the cerrado biome, Brazil

Carvalho-Roel¹,

Custódio²,

Júnior³

2017

Biosci. J.

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ABSTRACT:Wildlife road killing is a problem for animal conservation in the world. In order to mitigate this problem, it is necessary to understand the factors that affect it, like seasonality and climatic variables. The objective of the study was to evaluate the influence of climatic variables (mean temperature, relative air humidity and accumulated precipitation), seasonality and average daily traffic (ADT) on vertebrate roadkill rates in an area of Cerrado biome, Brazil. The study area is a stretch of 96 km of the highway BR-050, a four-lane road, between the cities of Uberlândia and Uberaba, state of Minas Gerais, Brazil. This area is characterized by intense fragmentation of natural areas, with few remnants of Cerrado biome. The climate has two very defined seasons, a warm and rainy summer and a very dry winter. We analyzed data from roadkill monitoring carried out from April 2012 to March 2013. The road was monitored weekly by car at an average speed of 60 km/h, by two observers, totaling 8,064 km surveyed. The highest roadkill rates for reptiles were recorded in the rainy season, for the other groups (mammals and birds) no difference was found. We also checked seasonality for the most abundant species: the highest number of roadkills was found in the rainy season for the common boa (Boa constrictor amarali) and for the six-banded armadillo (Euphractus sexcinctus). For the crab-eating fox (Cerdocyon thous), crab-eating raccoon (Procyon cancrivorus), striped hog-nosed skunk (Conepatus semistriatus) and red-legged seriema (Cariama cristata) we found no difference. The humidity and accumulated precipitation positively influenced the reptile roadkill rate. As expected, the same result was found for Boa constrictor amarali. Mammal roadkill rate increases with accumulated precipitation, on the other hand, Euphractus sexcinctus roadkill rate increases with temperature. Birds are not affected by climate variables, nevertheless, Cariama cristata roadkill rate decreases as humidity increases. Contrary to expectations, ADT had no influence on roadkill rates. These results show that it is necessary to investigate the influence of possible descriptor variables on mammals, birds and reptiles separately and not for all vertebrates as a group. Furthermore, certain species may even present different temporal patterns.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of climate variables on roadkill rates of wild vertebrates in the cerrado biome, Brazil

Carvalho-Roel¹,

Custódio²,

Júnior³

2017

Biosci. J.

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“…These data indicate the urgency of studies addressing this issue, in order to reduce the loss of biodiversity and public expenditures (Bager, Piedras, Martin, & Hóbus, 2007). Nevertheless, studies focusing on wildlife roadkill aggregation are recent in this country (Coelho, Kindel, & Coelho, 2008;Esperandio, 2011;Bueno, Freitas, Coutinho, Oswaldo Cruz, & Castro Júnior, 2012;Santana, 2012;Ferreira, Ribas, Casella, & Mendes, 2014;Carvalho, Iannini Custodio, & Marçal Junior, 2015;Ascensão, Desbiez, Medici, & Bager, 2017;Santos et al, 2017). Although it is not a focus of wildlife roadkill monitoring, domestic animals are also being killed on roads and because of their size, they can pose a threat to human safety.…”

mentioning

confidence: 99%

Do roadkill aggregations of wild and domestic mammals overlap?

Carvalho-Roel

Custódio

Júnior

2019

RBT

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Domestic animals are involved in a large number of traffic accidents and they represent danger to humans due to their size. Despite this, few studies consider domestic animals. That is why we evaluate mammals’ roadkill aggregations in order to locate them and to determine if wild and domestic mammals’ roadkills overlap. In addition, we investigate the influence of the landscape on the location of the aggregations. This study was carried out on the BR-050 highway, an area of Cerrado biome, in Southeastern Brazil. The monitoring was executed from April 2012 to March 2013, by car, at an average speed of 60 km/h, with two observers looking for roadkills on the highway. We found 482 mammals’ roadkills, including 260 (54 %) wild mammals, 164 (34 %) domestic and 58 (12.0 %) undetermined specimens. Of the 21 recorded mammal species, five were domestic. The wild mammals’ roadkill rate was 0.03 (± 0.02) individuals/km/day and the domestic roadkill rate was 0.02 (± 0.01). We detected roadkill aggregations for wild and domestic mammals. Roadkill hotspots of domestic mammals and wild mammals did not overlap. The variables that had the highest influence on wild mammals’ roadkill probability were: agriculture and silviculture cover as positive effects and distance to the nearest river, to the urban perimeter and to a natural fragment as negative effects. For domestic mammals these variables were: area of the smallest fragment and distance to a natural fragment as positive effects and silviculture cover as a negative effect. The explanation for the wild and domestic mammals’ roadkill hotspot non overlapping seems to be the effect of each variable in determining the roadkill hotspot since their effect is different for wild and domestic mammals. On the other hand, this non overlapping can be a result of domestic mammals’ scavenging habits. We propose different kinds of mitigation measures in order to reduce domestic and wild mammals’ roadkill.

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“…To assess the diversity of impacted species in a highway is an important tool to define areas of greater vulnerability and thus, which require priority in the establishment of mitigation measures (Hengemühje & Cademartori, 2008, Cunha, Hartmann, & Hartmann, 2015, Steil, Düpont, & Lobo, 2016, Deffaci, Silva, Hartmann, & Hartmann, 2016. However, previous and post-monitoring of impacted species before the establishment of the measures is necessary to verify their efficiency (Cunha, Moreira, & Silva, 2010, Ferreira, Ribas, Casella, & Mendes, 2014. Several studies, such as those performed by Camargo, Mazim, and Garcias, (2011), Hartmann, Hartmann, and Martins (2011), Coelho, Teixeira, Colombo, Coelho, and Kindel (2012, Santana (2012), Carvalho, Bordignon, and Shapiro (2014), Secco, Ratton, Castro, Lucas, and Bager (2014) and Deffaci et al (2016) highlight the issue of wildlife road kill in Brazil, reporting which taxa present higher mortality rates.…”

Section: Introductionmentioning

confidence: 99%

<b>Vertebrate road kill survey on a highway in southern Brazil

Corrêa

Silva

Oliveira

et al. 2017

Acta Sci. Biol. Sci.

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ABSTRACT. Highways are a major factor acting in the decline of several wildlife populations. Impact occurs due to the continuous flow of motor vehicles over tracks and collision with animals using the same area. This study aimed to list road killed wild vertebrates found in highways in the Pampa Biome, state of Rio Grande do Sul, over an entire year. The taxa found (amphibians, reptiles, birds and mammals) were identified to species level and their frequency of occurrence was seasonally registered. Along 2,160 km, we found 318 road killed individuals, totaling 65 species. This number represents an average of 0.147 road killed specimens by kilometer (that is, 1 individual each 7 km). Of these, seven species are under threat of extinction in the state of Rio Grande do Sul. We also found a seasonal pattern among road kills, in which the highest number of road killed animals was registered in the summer and spring months. These results contribute to increase knowledge about which species are most impacted by road kill on highways of the Pampa Biome. Such data can be used as an indicator for the implementation of measures by competent bodies to mitigate impacts of highways in the state of Rio Grande do Sul.Keywords: mortality, wildlife, Rio Grande do Sul.Levantamento de vertebrados atropelados em rodovias do sul do Brasil RESUMO. As rodovias são um fator provocador de declínio populacional de diversas espécies da fauna silvestre. O impacto ocorre devido ao contínuo fluxo de veículos automotores sobre as pistas e a colisão dos mesmos com animais que também utilizam essa área. O presente estudo teve por finalidade listar os vertebrados silvestres encontrados atropelados em rodovias no bioma Pampa, no Estado do Rio Grande do Sul, ao longo de um ano. Os táxons encontrados (anfíbios, répteis, aves e mamíferos) foram identificados em nível específico e a sua frequência de ocorrência foi registrada de forma sazonal. Em 2.160 km de estrada percorridos, foram encontrados 318 indivíduos atropelados, totalizando 65 espécies. Essa quantia representa uma média de 0,147 espécimes atropelados por quilômetro (ou seja, 01 indivíduo atropelado a cada 07 Km). Destas, sete espécies estão sob ameaça de extinção no Estado do Rio Grande do Sul. Foram observados padrões sazonais nos atropelamentos, sendo que os meses de verão e da primavera apresentaram o maior número de animais atropelados. Os resultados do estudo contribuem para o conhecimento de quais espécies da fauna silvestre são mais impactadas por atropelamentos no bioma Pampa. Estes dados poderão ser utilizados como orientação na implantação de medidas por órgãos competentes, afim de mitigar o impacto de rodovias no Estado do Rio Grande do Sul.Palavras-chave: mortandade, fauna silvestre, Rio Grande do Sul.

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Variação espacial de atropelamentos de mamíferos em área de restinga no estado do Espírito Santo, Brasil

Cited by 10 publications

References 24 publications

Influence of climate variables on roadkill rates of wild vertebrates in the cerrado biome, Brazil

Influence of climate variables on roadkill rates of wild vertebrates in the cerrado biome, Brazil

Do roadkill aggregations of wild and domestic mammals overlap?

<b>Vertebrate road kill survey on a highway in southern Brazil

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