Fine-scale determinants of vertebrate roadkills across a biodiversity hotspot in Southern Spain

Cañal, David; Camacho, Carlos; Martín, Beatriz; Lucas, Manuela de; Ferrer, Miguel

doi:10.1007/s10531-019-01817-5

Cited by 22 publications

(24 citation statements)

References 51 publications

(103 reference statements)

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“…The dominance of mammals as a major roadkill taxon has also been recorded in several other studies ( Lodé 2000 ; Lesbarrères et al., 2006 ; Canal et al., 2019 ). The difference in taxa dominating roadkill across studies may be related to local patterns in vertebrate diversity.…”

Section: Discussionsupporting

confidence: 73%

Wildlife roadkill in the Tsavo Ecosystem, Kenya: identifying hotspots, potential drivers, and affected species

Lala

Chiyo

Kanga³

et al. 2021

Heliyon

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Roadkill is one of the highest causes of wildlife mortality and is of global conservation concern. Most roadkill studies have focused on wildlife in developed countries such as the United States of America and temperate biomes, but there are limited data for the impacts of roads on wildlife in the African tropics, where road infrastructure development is projected to grow rapidly in natural environments and conservation areas. The Tsavo Conservation Area is an important biodiversity hotspot in eastern Kenya and is bisected by a major highway and railways that connect the port of Mombasa to the interior. Along this infrastructure corridor, roadkill was recorded for 164 days over an 11-year period (2007–2018). In total, 1,436 roadkill were recorded from 13,008 km driven of a 164.42 km Nairobi-Mombasa road representing 0.11 collisions per kilometer. The majority of roadkill were small to medium sized mammals (<15kg) (53%; n = 756), whereas birds comprised 32% (n = 460), reptiles 10% (n = 143), with the remaining 5% (n = 77) being large mammals (>15kg). Of the 460 birds recorded, 264 were identifiable represented by 62 species. All large mammals comprising 10 species were identified, including the African elephant, Loxodonta africana and the endangered African wild dog, Lycaon pictu s. Thirteen species of small mammal were also identified dominated by Kirk's dik-dik ( Madoqua kirkii ). Reptiles were represented by 11 species which were identified to the species level. Roadkill hotspots were identified using a kernel density method. The spatial distribution of roadkill was associated with adjacent shrub vegetation and proximity to permanent and seasonal rivers, and differences in seasonality and habitats were observed. Roadkill was lowest on road sections that traversed settled areas as opposed to roads adjacent to the protected areas. The results demonstrate that roadkill for two of the taxonomic groups - mammals and birds - appear high with numerous species detected in the Tsavo Conservation Area. These results can be used to focus efforts to reduce wildlife mortality by guiding future mitigation efforts.

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Section: Discussionsupporting

confidence: 73%

Wildlife roadkill in the Tsavo Ecosystem, Kenya: identifying hotspots, potential drivers, and affected species

Lala

Chiyo

Kanga³

et al. 2021

Heliyon

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“…These improve the core habitat and allow individuals to locate sufficient resources whilst crossing fewer roads. Several authors recommend removing or reducing shrubbery in central medians to reduce road mortality [ 116 , 117 ] (but see [ 118 ]). The use of central medians by fauna has not been well-studied and, if they are in fact beneficial to animal movement across a road, their removal may exacerbate barrier effects [ 78 ].…”

Section: Potential Road Mitigation Measures For Hedgehog Populatiomentioning

confidence: 99%

Impacts and Potential Mitigation of Road Mortality for Hedgehogs in Europe

Moore

Petrovan

Baker

et al. 2020

Animals

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Transport infrastructure is a pervasive element in modern landscapes and continues to expand to meet the demands of a growing human population and its associated resource consumption. Road-induced mortality is often thought to be a major contributor to the marked declines of European hedgehog populations. This review synthesizes available evidence on the population-level impacts of road mortality and the threat to population viability for the five hedgehog species in Europe. Local and national studies suggest that road mortality can cause significant depletions in population sizes, predominantly removing adult males. Traffic collisions are a probable cause of fragmentation effects, subsequently undermining ecological processes such as dispersal, as well as the genetic variance and fitness of isolated populations. Further studies are necessary to improve population estimates and explicitly examine the consequences of sex- and age-specific mortality rates. Hedgehogs have been reported to use crossing structures, such as road tunnels, yet evaluations of mitigation measures for population survival probability are largely absent. This highlights the need for robust studies that consider population dynamics and genetics in response to mitigation. In light of ongoing declines of hedgehog populations, it is paramount that applied research is prioritised and integrated into a holistic spatial planning process.

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“…Recently, studies concerning the factors explaining wildlife‐vehicle collisions have increased mainly in Europe and Asia (Bennett, 2017; Canal et al, 2019; W. Richard J. Dean et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Wildlife‐vehicle collisions in Moroccan Atlantic Sahara: Impact on resident species and Afro‐Palearctic birds for conservation purposes

Mansouri¹,

Dakki

Squalli³

et al. 2022

Afr J Ecol

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In this study, we described the temporal and spatial patterns of wildlife‐vehicle collisions in Dakhla‐Laayoune regions, using counts from cars for two years (2018–2021). A total of 462 roadkills were documented (monthly average of 0.075 roadkills/km), comprising 16 species, including mammals (residents), reptiles (residents), and birds (residents and migrants). Seasonal abundance and diversity of roadkills revealed a high peak during breeding and migration periods for all species. The generalised linear mixed models indicated that wildlife‐vehicle accidents have a higher probability of occurrence close to breeding and feeding sites and road sections with increased vegetation cover. Similarly, road collisions were higher close to migration routes and during breeding periods. Our study provides the first and only detailed results on wildlife road collisions in Morocco. Data gathered from this study provide valuable information for conservation measures of the most affected Moroccan species and Palearctic migrant birds which are crossing between Europe and Africa. Moreover, our data provide a new window of large‐scale comparative studies addressing the impacts of the infrastructures on biodiversity in the entire Atlantic coasts of Northwest Africa. Detailed studies on the local population dynamics of highly affected species are urgently needed to conclude whether these levels of road mortality are supportable.

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Fine-scale determinants of vertebrate roadkills across a biodiversity hotspot in Southern Spain

Cited by 22 publications

References 51 publications

Wildlife roadkill in the Tsavo Ecosystem, Kenya: identifying hotspots, potential drivers, and affected species

Wildlife roadkill in the Tsavo Ecosystem, Kenya: identifying hotspots, potential drivers, and affected species

Impacts and Potential Mitigation of Road Mortality for Hedgehogs in Europe

Wildlife‐vehicle collisions in Moroccan Atlantic Sahara: Impact on resident species and Afro‐Palearctic birds for conservation purposes

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