Impact of different road types on small mammals in Mt. Kalamaili Nature Reserve

Ji, Shengnan; Jiang, Zhigang; Liu, Lili; Li, Chunwang; Zhang, Yongjun; Ren, Shien; Ping, Xiaoge; Cui, Shaopeng; Chu, Hongjun

doi:10.1016/j.trd.2016.11.006

Cited by 16 publications

(7 citation statements)

References 35 publications

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“…Other highly mobile mammals such as squirrels exhibit clear avoidance of roads and rarely cross them [ 63 ]. Road type, size, and traffic volume are all factors that impact animal behavior and perceived risk [ 64 ]. The roads in our study area are hard compact, two-lane roads and are likely a barrier to vole movement.…”

Section: Discussionmentioning

confidence: 99%

Resource selection of a montane endemic: Sex-specific differences in white-bellied voles (Microtus longicaudus leucophaeus)

2020

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Resources that an individual selects contrasted against what is available can provide valuable information regarding species-specific behavior and ecological relationships. Small mammals represent excellent study organisms to assess such relationships. Isolated populations that exist on the edge of a species’ distribution often exhibit behavioral adaptations to the extremes experienced by a species and can provide meaningful insight into the resource requirements of the species. We deployed radio transmitters in a peripheral population of the long-tailed vole (Microtus longicaudus) during the mating season. We developed models of resource selection at multiple scales (within home range and patch). We found voles generally selected areas close to water and roads and consisting of high understory vegetation primarily composed of grasses. Resource selection varied between sexes suggesting different resource needs during the breeding season. The differential resource needs of voles might be a result of the energetic requirements for reproduction and are representative of a promiscuous or polygynous mating system.

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Section: Discussionmentioning

confidence: 99%

Resource selection of a montane endemic: Sex-specific differences in white-bellied voles (Microtus longicaudus leucophaeus)

2020

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“…Also, this ecological group is recognized by its capacity in influencing ecological processes on different trophic levels, affecting both prey and predator populations (Mortelliti and Boitani 2008). Small mammals have been used to model ecological fluxes in different contexts of human land-uses and applied to achieve different goals, including the assessment of restoration scenarios (McDonald and St. Clair 2004;Rico et al 2009;Hardt et al 2014;Ji et al 2017;Fialho et al 2019;Spirito et al 2020). By compiling data related to small mammals' movement capacity and the Graph Theory, our study provides relevant information to assist landscapes' connectivity recovery, promoting territorial planning towards sustainability.…”

Section: Discussionmentioning

confidence: 99%

Ecological corridors and landscape planning: a model to select priority areas for connectivity maintenance

2021

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Context Maintaining connectivity in landscapes where natural ecosystems are quickly replaced by human land-uses is a challenge. To reduce the effects of habitat loss, ecological corridors have been proposed as a relevant tool for landscape planning. Objective We aimed to develop a spatial model to identify and prioritize riparian corridors to improve landscape connectivity. Methods The model considers the effect of the landuse/cover types and remaining forests on the movement capacity of a focal species sensitive to fragmentation. Since landscape elements act as barriers or promoters to ecological fluxes, suitability values were set according to the element's ability in providing habitat. The model recognizes the effect of the contact between associated elements along the riparian corridor's width and length and corrects their suitability. These procedures enabled the calculation of the Utility Factor, resulting in a measure of the quality of the corridor. ResultsThe results show that the model assists the identification of the riparian corridor's sections where connectivity is hampered and management efforts are required to maintain landscape connectivity. In addition, it can be applied to select the corridors dominated by large forests, which could be designed for conservation purposes. The two study cases evidence that the model is flexible, adjustable to distinct landscapes, and the decision-maker's objectives. Conclusions We concluded that the proposed strategy helps decision-makers to prioritize the territories for managing or preserving connectivity. Finally, the method provides quantitative information that would not be perceived by just interpreting land-use/cover maps.

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“…Each pair consisted of one (experimental) plot longitudinally bisected by a paved transport infrastructure (hereafter: road), leaving approximately 2.5 × 1.5 km at each side of the putative barrier (hereafter: barrier sides), and another (control) plot that was bisected by an unpaved rural track (T). Rural tracks of 4–6 m wide were used as positive controls of the potential barrier effect of major roads since they were assumed to have much less influence on species movement 28 , 88 and consequently, on gene flow.…”

Section: Methodsmentioning

confidence: 99%

Lack of detectable genetic isolation in the cyclic rodent Microtus arvalis despite large landscape fragmentation owing to transportation infrastructures

Domínguez

Calero‐Riestra

Olea

et al. 2021

Sci Rep

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Although roads are widely seen as dispersal barriers, their genetic consequences for animals that experience large fluctuations in population density are poorly documented. We developed a spatially paired experimental design to assess the genetic impacts of roads on cyclic voles (Microtus arvalis) during a high-density phase in North-Western Spain. We compared genetic patterns from 15 paired plots bisected by three different barrier types, using linear mixed models and computing effect sizes to assess the importance of each type, and the influence of road features like width or the age of the infrastructure. Evidence of effects by roads on genetic diversity and differentiation were lacking. We speculate that the recurrent (each 3–5 generations) episodes of massive dispersal associated with population density peaks can homogenize populations and mitigate the possible genetic impact of landscape fragmentation by roads. This study highlights the importance of developing spatially replicated experimental designs that allow us to consider the large natural spatial variation in genetic parameters. More generally, these results contribute to our understanding of the not well explored effects of habitat fragmentation on dispersal in species showing “boom-bust” dynamics.

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Impact of different road types on small mammals in Mt. Kalamaili Nature Reserve

Cited by 16 publications

References 35 publications

Resource selection of a montane endemic: Sex-specific differences in white-bellied voles (Microtus longicaudus leucophaeus)

Resource selection of a montane endemic: Sex-specific differences in white-bellied voles (Microtus longicaudus leucophaeus)

Ecological corridors and landscape planning: a model to select priority areas for connectivity maintenance

Lack of detectable genetic isolation in the cyclic rodent Microtus arvalis despite large landscape fragmentation owing to transportation infrastructures

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