Modelling potential dispersal corridors for cougars in midwestern North America using least-cost path methods

LaRue, Michelle A.; Nielsen, Clayton K.

doi:10.1016/j.ecolmodel.2007.10.036

Cited by 192 publications

(126 citation statements)

References 33 publications

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“…The inclusion of the matrix characteristics and the non-Euclidian distance in the models strongly improved our understanding of the structural connectivity of the habitat. Our experience corroborates results from a growing number of studies (e.g., Hunter et al 2003;Larue and Nielsen 2008).…”

Section: Discussionsupporting

confidence: 82%

“…Cost surface analysis is an important and useful tool that can help guide conservation planning in landscapes changed by humans and assist in the design of landscape management strategies at broader scale extents (Adriaensen et al 2003;LaRue and Nielsen 2008). Clearly, patch occurrence is species-specific and influenced by the nature of the matrix Tischendorf and Fahrig 2000;D'Eon et al 2002).…”

Section: Discussionmentioning

confidence: 99%

“…Much research has shown that species respond strongly to the different spatial patterns created by different kinds of landscape change (e.g., Bissonette 1997Bissonette , 2007Hames et al 2001;Lindenmayer and Fischer 2006;LaRue and Nielsen 2008), and responses may not be in accordance with human visual perception of the landscape pattern (Bissonette 2003). The main process that is associated with landscape change is habitat fragmentation, with loss being the primary driver of biodiversity decline (Fahrig and Merriam 1985;Pimm and Askins 1995).…”

Section: Introductionmentioning

confidence: 99%

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Do well-connected landscapes promote road-related mortality?

et al. 2010

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Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Do well-connected landscapes promote road-related mortality?

et al. 2010

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“…Environmental features such as small forest remnants, invasive species, linear vegetation patches and water bodies have a substantial ecological value regardless of their areal extent. The presence of such features affects landscape ecology and thus habitat connectivity which, in turn, modifies landscape processes [3] such as species migration or landscape dynamics [4,5] and defines birds and mammals distribution [6]. Structural rural features like isolated trees and hedgerows have biological and ecological functions-windbreaks, field boundaries, erosion control-as well as large biodiversity value [7].…”

Section: Introductionmentioning

confidence: 99%

Sentinel-2’s Potential for Sub-Pixel Landscape Feature Detection

et al. 2016

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Land cover and land use maps derived from satellite remote sensing imagery are critical to support biodiversity and conservation, especially over large areas. With its 10 m to 20 m spatial resolution, Sentinel-2 is a promising sensor for the detection of a variety of landscape features of ecological relevance. However, many components of the ecological network are still smaller than the 10 m pixel, i.e., they are sub-pixel targets that stretch the sensor’s resolution to its limit. This paper proposes a framework to empirically estimate the minimum object size for an accurate detection of a set of structuring landscape foreground/background pairs. The developed method combines a spectral separability analysis and an empirical point spread function estimation for Sentinel-2. The same approach was also applied to Landsat-8 and SPOT-5 (Take 5), which can be considered as similar in terms of spectral definition and spatial resolution, respectively. Results show that Sentinel-2 performs consistently on both aspects. A large number of indices have been tested along with the individual spectral bands and target discrimination was possible in all but one case. Overall, results for Sentinel-2 highlight the critical importance of a good compromise between the spatial and spectral resolution. For instance, the Sentinel-2 roads detection limit was of 3 m and small water bodies are separable with a diameter larger than 11 m. In addition, the analysis of spectral mixtures draws attention to the uneven sensitivity of a variety of spectral indices. The proposed framework could be implemented to assess the fitness for purpose of future sensors within a large range of applications.

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“…The least-cost path method has been shown to be useful in several studies [38][39][40][41][42] for determining paths to connect landscape structure elements, which are commonly integrated, for example, in geographic information system (GIS) technology. Least-cost path analysis is one of the best methods for achieving the optimal establishment of paths between landscape elements (e.g., large hubs (matrices), smaller sites (patches) and links (corridors)) [43].…”

Section: Introductionmentioning

confidence: 99%

Planning Landscape Corridors in Ecological Infrastructure Using Least-Cost Path Methods Based on the Value of Ecosystem Services

2014

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Abstract:Ecosystem service values have rarely been incorporated in the process of planning ecological infrastructure for urban areas. Urban ecological infrastructure is a network system of natural lands and waters that provides ecosystem services. The purpose of this study was to design landscape corridors that maximize the value of ecosystem services in ecological infrastructure planning. We explored the optimal corridors to enhance the connectivity among landscape elements to design an ecological infrastructure for the city of Gwacheon, South Korea, as an example of a small urban area. We calculated the value of ecosystem services using standardized estimation indices based on an intensive review of the relevant literature and employed the least-cost path method to optimize the connectivity of landscape structural elements. The land use type in the city with the highest estimated value of ecosystem services was the riparian zone (i.e., 2011 US$7,312.16/ha). Given areal coverage of all land use types, the estimated value of developed area open spaces was 2011 US$899,803.25, corresponding to the highest contribution to the total value of ecosystem OPEN ACCESS Sustainability 2014, 6 7565 services. Therefore, the optimal configured dispersal corridors for wildlife were found from the riparian zones (source area) to the developed area open spaces (destination area) in the city. Several challenges remain for improving the estimation of the value of ecosystem services and incorporating these ecosystems in ecological infrastructure planning. Nonetheless, the approaches taken to estimate the value of ecosystem services and design landscape corridors in this study may be of value to future efforts in urban ecological infrastructure planning.

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Modelling potential dispersal corridors for cougars in midwestern North America using least-cost path methods

Cited by 192 publications

References 33 publications

Do well-connected landscapes promote road-related mortality?

Do well-connected landscapes promote road-related mortality?

Sentinel-2’s Potential for Sub-Pixel Landscape Feature Detection

Planning Landscape Corridors in Ecological Infrastructure Using Least-Cost Path Methods Based on the Value of Ecosystem Services

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