Effectiveness of a highway overpass to promote landscape connectivity and movement of moose and roe deer in Sweden

Olsson, Mikael; Widén, Per; Larkin, Jeffery L.

doi:10.1016/j.landurbplan.2007.10.006

Cited by 86 publications

(62 citation statements)

References 20 publications

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“…Our study does not allow to identify the mechanisms underlying the degradation of mammal communities that we observed, but it is probable that hunting, forest degradation, physical barriers and isolation, or a combination of these are involved. Actions that could possibly lead to recovery would then include: (1) Enhance connectivity between parks and fragments, for example by implementing biological corridors and creating wildlife overpasses over the road network along the Canal to facilitate mammal movements and gene flow between forests now separated (Olsson et al 2008); (2) Enhanced forest protection coupled with better education of local people to reduce poaching (Moreno et al in press); (3) Reduce forest conversion and degradation, for example by implementing a program of payments for ecosystem services (Rodriguez 2014).…”

Section: Discussionmentioning

confidence: 99%

An assessment of the terrestrial mammal communities in forests of Central Panama, using camera-trap surveys

Meyer

Esser

Moreno

et al. 2015

Journal for Nature Conservation

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a b s t r a c tThe Isthmus of Panama, part of the planet's third largest megadiversity hotspot, and connecting the faunas of North and South America, has lost more than half of its forest due to agriculture and economic development. It is unknown to what degree the remaining forest, which is fragmented and subject to poaching, still supports the wildlife diversity found in intact forests. Here, we use camera-trap surveys to assess whether forests in Central Panama, the narrowest and most disturbed portion of the Isthmus, still have intact communities of medium-and large-bodied terrestrial mammals. During 2005-2014, we collected camera-trap survey data from 15 national parks and forest fragments on both sides of the Panama Canal, and compared these to similar data from two sites in the intact Darién National Park in Eastern Panama, the nearest available reference. We found that most sites in Central Panama -including some of the national parks -had lower mammal species richness and evenness than the reference sites, and less structurally-complex mammal communities. Forests in Central Panama had little or no apex predators and large terrestrial frugivores, with the exception of two sites directly connected to the reference site. Our results indicate that the terrestrial mammal community in forests of Central Panama is currently degraded, even inside national parks. These data provide a baseline for evaluating the success of conservation efforts to prevent the Panamanian Isthmus to become a bottleneck for movement of animals.

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Section: Discussionmentioning

confidence: 99%

An assessment of the terrestrial mammal communities in forests of Central Panama, using camera-trap surveys

Meyer

Esser

Moreno

et al. 2015

Journal for Nature Conservation

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“…In comparison to the track-pad method, videosurveillance provided additional data such as the timing of the crossing event, group size, and sex and age of the individuals (e.g., Olsson et al 2008). Time of crossing use is an important indicator of why an animal may be using a culvert and can be used to determine the most appropriate mitigation measures to increase carnivore passage use.…”

Section: Discussionmentioning

confidence: 99%

Surveying drainage culvert use by carnivores: sampling design and cost–benefit analyzes of track-pads vs. video-surveillance methods

Mateus

Grilo

Santos‐Reis

2010

Environ Monit Assess

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Environmental assessment studies often evaluate the effectiveness of drainage culverts as habitat linkages for species, however, the efficiency of the sampling designs and the survey methods are not known. Our main goal was to estimate the most cost-effective monitoring method for sampling carnivore culvert using track-pads and video-surveillance. We estimated the most efficient (lower costs and high detection success) interval between visits (days) when using trackpads and also determined the advantages of using each method. In 2006, we selected two highways in southern Portugal and sampled 15 culverts over two 10-day sampling periods (spring and summer). Using the track-pad method, 90% of the animal tracks were detected using a 2-day interval between visits. We recorded a higher number of crossings for most species using video-surveillance (n = 129) when compared with the track-pad technique (n = 102); however, the detection ability using the video-surveillance method varied with type of structure and species. More crossings were detected in circular culverts (1 m and 1.5 m diameter) than in box culverts (2 m to 4 m width), likely because video cameras had a reduced vision coverage area. On the other hand, carnivore species with small feet such as the common genet Genetta genetta were detected less often using the trackpad surveying method. The cost-benefit analyzes shows that the track-pad technique is the most appropriate technique, but video-surveillance allows year-round surveys as well as the behavior response analyzes of species using crossing structures.

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“…Monthly, daily and hourly distributions of collisions for roe deer and wild boar. (Olsson et al 2008). Several authors underlined the development of road networks among the main factors affecting UVC increase (Mysterud 2004;Seiler 2004;Langbein 2011).…”

Section: Resultsmentioning

confidence: 99%

Temporal patterns of ungulate-vehicle collisions in a subalpine Italian region

Putzu

Bonetto²,

Civallero³

et al. 2014

Italian Journal of Zoology

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Over the last few decades, in Italy as in the rest of EU, both the number of wild ungulates and the volume of traffic have increased significantly. Consequently, ungulate-vehicle collisions have increased with significant costs in human death and injury, animal welfare and material damage. In this study we provide information about temporal patterns of collisions in a subalpine Italian region. We analyzed 1110 reports of accidents that occurred in Cuneo district from January 2008 to December 2011. Most of them were caused by roe deer and wild boar, while red deer, fallow deer and chamois were occasionally involved. Monthly distribution of accidents showed two peaks, with a higher risk of collision during spring mainly related to roe deer and a secondary peak in autumn caused by wild boar. No evident daily variations were noticed. In the case of roe deer, we reported the existence of a primary hourly peak at dusk and another secondary peak at dawn. Wild boar were most frequently involved in collisions during dusk and night. We hypothesized that these temporal distributions are the result of a complex interaction of phenological, behavioral and human-related reasons. Information provided in this study allows us to better understand the dynamics and patterns of wildlife-car collisions and represents an indispensable element for the implementation of any mitigation strategy.

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Effectiveness of a highway overpass to promote landscape connectivity and movement of moose and roe deer in Sweden

Cited by 86 publications

References 20 publications

An assessment of the terrestrial mammal communities in forests of Central Panama, using camera-trap surveys

An assessment of the terrestrial mammal communities in forests of Central Panama, using camera-trap surveys

Surveying drainage culvert use by carnivores: sampling design and cost–benefit analyzes of track-pads vs. video-surveillance methods

Temporal patterns of ungulate-vehicle collisions in a subalpine Italian region

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