Dispersal Patterns of Red Foxes Relative to Population Density

Allen, Stephen; Sargeant, Alan B.

doi:10.2307/3809277

Cited by 61 publications

(48 citation statements)

References 19 publications

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“…See text and Fig. 3 (Lee & Vaughan, 2003), and in red fox Vulpes vulpes in North Dakota where dispersal directions were altered by a 4-lane interstate highway (Allen & Sargeant, 1993).…”

Section: Discussionmentioning

confidence: 99%

Importance of dispersal for the expansion of a Eurasian lynxLynx lynxpopulation in a fragmented landscape

Zimmermann

Breitenmoser‐Würsten

Breitenmoser

2007

Oryx

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Dispersal allows recolonization of previous areas of habitat following severe depression of a population but the significance of this is not clear in felids. There is little evidence to support the general belief that subadult felids will colonize new areas, although this is a crucial assumption in reintroduction or recovery projects. Eurasian lynx Lynx lynx were reintroduced into the Swiss Alps and have subsequently spread over part of their potential range but the expansion halted in the mid 1980s. We postulated that high lynx densities would lead to an expansion of the population, and to assess the potential of this population to expand we compared the dispersal characteristics of 22 subadults from the northwest Swiss Alps, where an increase in lynx abundance occurred from 1995 onwards, to 17 individuals from the Jura Mountains, an area with a lower lynx density.Dispersal data came mainly from radio-telemetry. Dispersal rates and distances for subadults that completed dispersal were lower in the north-west Swiss Alps than in the Jura Mountains. In general, subadults exhibited little ability to cross major barriers such as highways. The hypothesis that high density alone will foster the expansion of the population was therefore not confirmed. This has consequences for the reintroduction and recovery of carnivores in fragmented landscapes. To establish only one strong source population may not be an optimal strategy, and population nuclei should therefore be founded in several neighbouring patches.

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“…See text and Fig. 3 (Lee & Vaughan, 2003), and in red fox Vulpes vulpes in North Dakota where dispersal directions were altered by a 4-lane interstate highway (Allen & Sargeant, 1993).…”

Section: Discussionmentioning

confidence: 99%

Importance of dispersal for the expansion of a Eurasian lynxLynx lynxpopulation in a fragmented landscape

Zimmermann

Breitenmoser‐Würsten

Breitenmoser

2007

Oryx

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“…There is evidence that homing success is inversely related to displacement distance in mammals (Allen & Sargeant, 1993;VanVuren et al, 1997). The aim of this research was to investigate the effectiveness of translocation of foxes on the houbara release programme and to test the hypothesis that probability of return is related to the distance of the translocation.…”

Section: Introductionmentioning

confidence: 99%

Is translocation an effective tool to remove predatory foxes from a desert protected area?

Lenain¹,

Warrington

2001

Journal of Arid Environments

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“…A variety of methods have been used: counts of reproductive dens (Insley 1977, Page 1981, Harris and Rayner 1986a, b, Hewson 1986, Coman et al 1991, Meia and Weber 1992, Allen and Sargeant 1993, hunting or questionnaire statistics (Lloyd 1968, Kolb and Hewson 1980, Harris 1981, Hatcher and Shaw 1981, Hewson 1984, Lindström 1991, scent stations (Hatcher andShaw 1981, Rau et al 1985), spotlighting (Stahl 1990, Stahl and Migot 1990, Weber et al 1991, Marlow 1992, track counts on snow (Pulliainen 1981, Goszczyński 1989) and on sand (Rau et al 1985, Servin et al 1987, or faeces counts along transects (Kolb andHewson 1980, Rau et al 1985). Of these methods, only exhaustive den counts allow the estimation of absolute density, when applied in limited areas that can be easily searched (i.e.…”

Section: Introductionmentioning

confidence: 99%

Faeces count as an index of fox abundance

Cavallini¹

1994

Acta Theriol.

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Cavallini P. 1994. Faeces count as an index of fox abundance. Acta theriol. 39: 417-424.Faeces were collected monthly along transects in 9 areas of the Pisa province, central Italy, from April 1992 to March 1993 (total km walked = 982). An index of fox abundance (n of faeces per km) was computed. It was negatively influenced by rainfall in the 20 days preceding the transect, but was unrelated to the percentage of plant material in the diet. Differences among areas (averages from 0.338 to 2.966 faeces per km) were significant (p < 0.0001) and consistent throughout the year. Faeces were randomly distributed along the transects. The index may therefore provide an efficient and inexpensive method to evaluate relative abundance of foxes, but comparisons should include only areas and periods with similar rainfall. Seasonal population fluctuations are not detectable. Best results may be obtained when rainfall in the 20 days preceding the transect did not exceed 50 mm.

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Dispersal Patterns of Red Foxes Relative to Population Density

Cited by 61 publications

References 19 publications

Importance of dispersal for the expansion of a Eurasian lynxLynx lynxpopulation in a fragmented landscape

Importance of dispersal for the expansion of a Eurasian lynxLynx lynxpopulation in a fragmented landscape

Is translocation an effective tool to remove predatory foxes from a desert protected area?

Faeces count as an index of fox abundance

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