Identification of functional corridors with movement characteristics of brown bears on the Kenai Peninsula, Alaska

Graves, Tabitha A.; Farley, Sean D.; Goldstein, Michael I.; Servheen, Christopher

doi:10.1007/s10980-007-9082-x

Cited by 45 publications

(38 citation statements)

References 15 publications

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“…The corridor concept (e.g., Forman 1983;Merriam 1991;Saunders and Hobbs 1991;Lindenmayer and Nix 1993;Merriam and Saunders 1993;Noss 1993;Bennett et al 1994;Bonner 1994;Dawson 1994;Rosenberg et al 1997;Tischendorf 1997;Haddad 1999;Brooker et al 1999;Graves et al 2007;Ockinger and Smith 2007) originated from the generalized assumption that organisms do not venture into non-habitat.…”

Section: Structural Definitionsmentioning

confidence: 99%

Connectivity measures: a review

2008

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One of the central problems in contemporary ecology and conservation biology is the drastic change of landscapes induced by anthropogenic activities, resulting in habitat loss and fragmentation. For many wild living species, local extinctions of fragmented populations are common and recolonization is critical for regional survival. Successful recolonization depends on the availability of dispersing individuals and the degree of landscape connectivity. The obvious implications of landscape connectivity for conservation biology have led to a proliferation of connectivity measures. However, general relationships between landscape connectivity and landscape structure are lacking, and so are the relationships between different connectivity metrics. Consequently, there is a need to develop landscape metrics that more accurately characterize the landscape with an emphasis on the underlying processes. Here we review various definitions of landscape connectivity, explain their mathematical connotations, and make some unifying conclusions and suggestions for future research.

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Section: Structural Definitionsmentioning

confidence: 99%

Connectivity measures: a review

2008

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“…It is applied to a diversity of species, in a wide range of habitats, at a vast variety of scales and in many different contexts. Connectivity is crucial in regulating populations of organisms as diverse as watersnakes (Attum et al 2007), gerbils (Blaum & Wichmann 2007), bacterioplankton (Crump et al 2007), diatoms (Vyverman et al 2007), spiders (Baker 2007), reef fish (Dorenbosch et al 2007) and brown bears (Graves et al 2007). The concept has been applied in habitats from the artic (Crump et al 2007) through temperate regions (Gelling et al 2007) to the tropics (Sheaves 2005).…”

Section: Introductionmentioning

confidence: 99%

Consequences of ecological connectivity: the coastal ecosystem mosaic

Sheaves¹

2009

Mar. Ecol. Prog. Ser.

298

216

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Connectivity links habitats in space and time. It is a key process that facilitates many life-history functions of myriad species in a variety of contexts over a wide range of scales. Perhaps its most obvious application is to the multifaceted linkages among the diverse habitat units comprising ecosystem complexes like the coastal ecosystem mosaic (CEM) -the tightly interlinked coastal, estuarine, wetland and freshwater habitats at the interface of land and sea. The ability to utilise this diversity of connected habitats is integral to the life histories of a broad spectrum of organisms, with connectivity between habitats being crucial to important functions like nursery utilisation. Although connectivity is an obvious feature of the CEM, investigation of its implications has largely been restricted to the migration of organisms. However, connectivity has much broader conceptual relevance. It is a pervasive and multifaceted process affecting and enabling the lives of organisms over the full range of conceptual scales, with ecosystem components connected by a diversity of factors, including physical and biological translocation of nutrients, ontogenetic, life history, spawning and feeding migrations, food-web dynamics, predator-prey interactions, and many more. All of these play crucial roles in structuring biological populations, communities and assemblages, and in driving the biological processes that support them. Moreover, connectivity is a prominent and necessary component of ecological concepts, ranging from estuarine dependence and metapopulation dynamics to foraging arena theory. Considering connectivity as a multifaceted process leads to specific hypotheses about the functioning of the CEM and similar ecosystem complexes. KEY WORDS: Connectivity · Coastal ecosystems · Estuarine · Wetland · Ecosystem interactionsResale or republication not permitted without written consent of the publisher

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“…Patch connectivity accentuates habitat amount and arrangement, and thus, Euclidean or effective distances between the habitat patches become an important issue (Broquet et al 2006). Corridor connectivity pays particular attention to linear features to promote animal dispersal through connectivity restoration (Beier et al 2005;Davies and Pullin 2007;Graves et al 2007), while matrix connectivity evaluates overall landscape mosaics to maintain maximum landscape continuity of non-built areas (Levin et al 2007) and to secure the quality and effect of the landscape matrix critical to conserve connectivity (Joly et al 2003;Stevens et al 2004;Umetsu and Pardini 2007). Lindenmayer and Fisher (2006) differentiated habitat connectivity referred to as the connectedness of habitat patches for a given species from landscape connectivity reflecting human perceptions of the vegetation cover patterns of a landscape.…”

Section: Introductionmentioning

confidence: 99%

“…In this case, landscape connectivity is often involved with population dynamics, animal behavior (Belisle 2005;Baguette and Van Dyck 2007), and colonization processes by which a set of populations are interconnected into the meta-population (van Langevelde 2000;Wimberly 2006). In applied research, the notion of connectivity is used to develop reserve design, planning and implementation (Bani et al 2002;Bodin and Norberg 2007;Carlos et al 2003;Kati et al 2004;Rothley and Rae 2005), and habitat networks for a particular species (Graves et al 2007). Obviously, wildlife corridors and linkages are design products for conserving connectivity for multiple species in natural areas (Beier et al 2005;Davies and Pullin 2007;Hoctor et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Spatial assessment of landscape ecological connectivity in different urban gradient

Park

2015

Environ Monit Assess

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Urbanization has resulted in remnant natural patches within cities that often have no connectivity among themselves and to natural reserves outside the urban area. Protecting ecological connectivity in fragmented urban areas is becoming crucial in maintaining urban biodiversity and securing critical habitat levels and configurations under continual development pressures. Nevertheless, few studies have been undertaken for urban landscapes. This study aims to assess ecological connectivity for a group of species that represent the urban desert landscape in the Phoenix metropolitan area and to compare the connectivity values along the different urban gradient. A GIS-based landscape connectivity model which relies upon ecological connectivity index (ECI) was developed and applied to this region. A GIS-based concentric buffering technique was employed to delineate conceptual boundaries for urban, suburban, and rural zones. The research findings demonstrated that urban habitats and potential habitat patches would be significantly influenced by future urban development. Particularly, the largest loss of higher connectivity would likely to be anticipated in the "in-between areas" where urban, suburban, and rural zones overlap one another. The connectivity maps would be useful to provide spatial identification regarding connectivity patterns and vulnerability for urban and suburban activities in this area. This study provides planners and landscape architects with a spatial guidance to minimize ecological fragmentation, which ultimately leads to urban landscape sustainability. This study suggests that conventional planning practices which disregard the ecological processes in urban landscapes need to integrate landscape ecology into planning and design strategies.

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Identification of functional corridors with movement characteristics of brown bears on the Kenai Peninsula, Alaska

Cited by 45 publications

References 15 publications

Connectivity measures: a review

Connectivity measures: a review

Consequences of ecological connectivity: the coastal ecosystem mosaic

Spatial assessment of landscape ecological connectivity in different urban gradient

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