Seasonality and habitat types affect roadkill of neotropical birds

Rosa, Clarissa Alves da; Bager, Alex

doi:10.1016/j.jenvman.2011.11.004

Cited by 64 publications

(49 citation statements)

References 24 publications

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“…However, species with life histories characterized by low reproductive rates and low adult mortality, such as the Vanderhaege's toad-headed turtle (Phrynops vanderhaegei), and huge snakes and vipers, are more vulnerable to the demographic consequences of road mortality (Forman et al 2003, Shepard 2009). The species richness of roadkill and the roadkill rates are influenced by seasonality as well as by type of nearby habitat (Trombulak & Frissell 2000, Rosa & Bager 2012. There are two well-defined seasons in Central Brazil, the wet or rainy season, characterized by high precipitation, and the dry season, during which almost no rain falls (Nimer 1989).…”

Section: Discussionmentioning

confidence: 99%

Wild vertebrate roadkill in the Chapada dos Veadeiros National Park, Central Brazil

Braz

França

2016

Biota Neotrop.

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Chapada dos Veadeiros National Park is one of the most important protected areas of the Brazilian Cerrado and is inhabited by diverse species, but the area has seldom been studied. From 2006 to 2008, we studied the impact of roads on wild vertebrates by recording roadkill on the two main roads located in the vicinity of the park. Of 824 killed vertebrates belonging to 138 species that were recorded, the species that were found most often in each vertebrate group were the Schneider's toad (Rhinella schneideri), the grassland sparrow (Ammodramus humeralis), the yellow-toothed cavy (Galea flavidens), and the marbled lancehead (Bothrops marmoratus). The roadkill rate was 0.096 animals km -1. Vertebrate mortality was significantly higher during the wet season. There is a significant relationship between habitat structure and the vertebrates that were found as roadkill: amphibians are associated with nearby forest and paved roads, birds with nearby pastures, reptiles with nearby grassland, and mammals with unpaved roads. Action should be taken such as highway fencing in combination with safe crossing opportunities for wildlife in order to decrease the number of animals killed on the roads. Keywords: road ecology, protected areas, conservation, cerrado. , o tico-tico-do-campo (Ammodramus humeralis), o preá (Galea flavidens) e a jararaca (Bothrops marmoratus). A taxa de atropelamento foi de 0.096 animais km -1 , com uma mortalidade significativamente maior durante a estac¸ã o chuvosa. Foi encontrada uma relac¸ã o significativa entre a estrutura do habitat e as classes de vertebrados atropelados nas rodovias, sendo o grupo dos anfíbios associados a fragmentos florestais e trechos pavimentadas das rodovias, o das aves associado com pastagens circundantes, répteis com campos e mamíferos com trechos nã o pavimentados das rodovias. Medidas como barreiras que impec¸am a movimentac¸ã o dos animais nas estradas, bem como passagens seguras sã o indicadas para a reduc¸ã o do nú mero de animais mortos nas rodovias na regiã o do Parque. Palavras-chave: ecologia de estradas, áreas protegidas, conservac¸ão, cerrado.

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Section: Discussionmentioning

confidence: 99%

Wild vertebrate roadkill in the Chapada dos Veadeiros National Park, Central Brazil

Braz

França

2016

Biota Neotrop.

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“…In fact, many of the research studies undertaken on road mortality tended to explore the differences between and within species with the intention of informing more targeted mitigation. For instance, studies considered in this review found that a variety of species-associated factors influenced the rate of wildlife-vehicle collisions, such as age (particularly dispersing juveniles; [19][20][21][22][23]), activity patterns (such as nocturnal and migratory activities; [6,7,24,25]), season (primarily breeding season; [12,[26][27][28][29]), gender (such as males ranging further in the breeding season in search a mate; [23,26,[30][31][32]), diet preferences (e.g., one study found that omnivorous mammals and herbivorous birds were most vulnerable; [33]), mobility (including low-flying species; [15,21,34,35]), behavioral responses (e.g., certain species do not respond to oncoming traffic; [15,36]), and home range size (i.e., the larger the home range the higher the probability of crossing a road; [37]). Another study found that species that were more inconspicuous on the roads were more vulnerable to wildlife-vehicle collisions [38].…”

Section: Direct Impacts Of Roads On Wildlifementioning

confidence: 99%

Effects of Road Density and Pattern on the Conservation of Species and Biodiversity

Bennett

2017

Curr Landscape Ecol Rep

129

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The development and presence of roads can reduce landscape permeability, lead to habitat loss, and increase habitat fragmentation. It is these fundamental changes in landscape structure that can have both direct and indirect impacts on the conservation of species and biodiversity. In this review, I examine 215 research studies conducted between 2011 and 2015 that explore the impacts of roads and road networks on a wide range of species. I divided these studies into four main categories: 1) the direct effects of roads on wildlife, 2) the indirect effects of roads on wildlife, 3) the consequences of road networks on wildlife populations, and 4) survey design and mitigation including both innovations and evaluations. I found that the majority of studies (38%) explored the indirect effects of roads on wildlife, including displacement, fitness consequences, and road crossing ability of wildlife. Nevertheless, despite there being a pressing need to understand how existing road networks impact wildlife and how increasing road density may influence local and regional population persistence, only 10% of the studies considered the implications of road networks on wildlife. However, there is an increasing trend towards the development of predictive models that can be used for a better understanding of road network impacts, assess landscape connectivity, and devise mitigation. This review also highlighted the continued need to devise and evaluate mitigation measures so transportation authorities and conservation practitioners may be better equipped to address the ecological implications of roads and proposed road development.

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“…Proliferation of roads over recent decades is also contributing to lethal and sub-lethal edge effects (Laurance et al 2009;Rosa & Bager 2012;NavarroCastilla et al 2014), especially within certain habitat types (Fuentes-Montemayor et al 2009). In contrast to a crop matrix, which provides habitat for some small mammals (Passamani & Ribeiro 2009), road surfaces commonly lead individuals to avoid the road-forest edge due to paving and changes in the microclimate and vegetation (Jaeger et al 2005;McGregor et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Edge effects on small mammals: Differences between arboreal and ground‐dwelling species living near roads in Brazilian fragmented landscapes

Rosa¹,

Secco

Carvalho

et al. 2017

Austral Ecology

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Habitat fragmentation often induces edge effects that can increase, decrease or have minimal effect upon the population density of a species, depending upon environmental conditions and the requirements of the species. Using a trapping study and generalized linear mixed models, we evaluated edge effects on small tropical mammals living near roads, including two ground-dwelling (Akodon sp. and Cerradomys subflavus) and two arboreal (Marmosops incanus and Rhipidomys sp.) species. We examined the relationship of these edge effects to environmental factors at both plot and patch scales. Generalist ground-dwelling species were attracted to edges, with higher population densities recorded in habitats close to road or matrix edges where vegetation density was lower. In contrast, populations of the generalist arboreal species avoided edge habitats, their populations were found in greater density in habitats far from roads/matrix edges. Thus, our results show that patterns of edge habitat utilization were related to the ecological requirements of each species. These findings are especially important in the tropics, where demand for economic growth in many countries has accelerated the fragmentation process and has recently culminated in increased road construction and expansion. Fragmented habitats promote an increase in edge environments, and consequently will reduce the abundance of arboreal small mammal species, such as those used as models in this study.

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Seasonality and habitat types affect roadkill of neotropical birds

Cited by 64 publications

References 24 publications

Wild vertebrate roadkill in the Chapada dos Veadeiros National Park, Central Brazil

Wild vertebrate roadkill in the Chapada dos Veadeiros National Park, Central Brazil

Effects of Road Density and Pattern on the Conservation of Species and Biodiversity

Edge effects on small mammals: Differences between arboreal and ground‐dwelling species living near roads in Brazilian fragmented landscapes

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