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Habitat corridors and the conservation of small mammals in a fragmented forest environment

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Abstract

At Naringal in south-western Victoria, Australia, clearing of the original forest environment has created an agricultural landscape dominated by grazed pastures of introduced grasses. Remnant forest vegetation is re-stricted to small patches of less than 100 ha in size, that are loosely linked by narrow forested strips along road reserves and creeks. Six native and two introduced species of small terrestrial mammal (< 2 kg) occur within this environment. The native mammals, being dependent upon forest vegetation, were less tolerant to forest fragmentation than were the introduced species that also persist in farmland and farm buildings. The native mammals displayed an increasing frequency of occurrence in successively larger size-classes of forest patches. Those species with the greatest body-weight were the most vulnerable to habitat loss. All species of small mammal occurred in narrow habitat corridors of forest vegetation on roadsides. The resident status, seasonal variation in relative abundance, patterns of reproduction, and movements of each species were monitored in two habitat corridors during a 25-month trapping study. The corridors were found to facilitate continuity between otherwise-isolated populations of small mammals in this locality in two ways: firstly, by providing a pathway for the dispersal of single animals between patches; and secondly, by enabling gene flow through populations resident within the corridors. The small size of forest remnants at Naringal, and the vulnerability of species with low population sizes, emphasize the importance of preserving a mosaic of numerous habitat patches that together will support regional populations of sufficient size for longer-term persistence. The continuity between remnant habitats that is provided by a network of habitat corridors is an essential, and critical, component of this conservation strategy.

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References

  • Adams, L.W. 1984. Small mammal use of an interstate highway median strip. J. Appl. Ecol. 21: 175–178.

    Google Scholar 

  • Ambuel, B. and Temple, S.A. 1983. Area-dependent changes in bird communities and vegetation of southern Wisconsin forests. Ecology 64: 1057–1068.

    Google Scholar 

  • Barnett, J.L., How, R.A. and Humphreys, W.F. 1978. The use of habitat components by small mammals in eastern Australia. Aust. J. Ecol. 3: 277–285.

    Google Scholar 

  • Bennett, A.F. 1987a. Biogeography and conservation of mammals in a fragmented forest environment in south-western Victoria. Ph.D. Thesis, University of Melbourne, Victoria.

    Google Scholar 

  • Bennett, A.F. 1987b. Conservation of mammals within a fragmented forest environment: the contributions of insular biogeography and autecology. In: Nature Conservation: The Role of Remnants of Native Vegetation. pp. 41–52. Edited by D.A. Saunders, G.W. Arnold, A.A. Burbidge and A.J.M. Hopkins. Surrey Beatty and Sons, Sydney.

    Google Scholar 

  • Bennett, A.F. 1988. Roadside vegetation: a habitat for mammals at Naringal, south-western Victoria. Victorian Nat. 105: 106–113.

    Google Scholar 

  • Braithwaite, R.W. and Lee, A.K. 1979. The ecology of Rattus lutreolus I. A Victorian heathland population. Aust. Wildl. Res. 6: 173–189.

    Google Scholar 

  • Braithwaite, R.W., Cockburn, A. and Lee, A.K. 1978. Resource partitioning by small mammals in lowland heath communities of south-eastern Australia. Aust. J. Ecol. 3: 423–445.

    Google Scholar 

  • Breckwoldt, R. 1983. Wildlife in the Home Paddock. Angus and Robertson, Australia.

    Google Scholar 

  • Campbell, B.H. 1981. An aqueduct as a potential barrier to the movements of small mammals. Southwest. Nat. 26: 84–85.

    Google Scholar 

  • Diamond, J.M. 1975. The island dilemma: lessons of modern biogeographic studies for the design of natural reserves. Biol. Conserv. 7: 129–146.

    Google Scholar 

  • Eldridge, J. 1971. Some observations on the dispersion of small mammals in hedgerows. J. Zool. (Lond.) 165: 530–534.

    Google Scholar 

  • Fahrig, L. and Merriam, G. 1985. Habitat patch connectivity and population survival. Ecology 66: 1762–1768.

    Google Scholar 

  • Forman, R.T.T. and Godron, M. 1986. Landscape Ecology. J. Wiley and Sons, New York.

    Google Scholar 

  • Frankel, O.H. and Soulé, M.E. 1981. Conservation and Evolution. Cambridge University Press, Cambridge.

    Google Scholar 

  • Friend, G.R. 1980. Wildlife conservation and softwood forestry in Australia: some considerations. Aust. For. 43: 217–224.

    Google Scholar 

  • Gullan, P.K. and Robinson, A.C. 1980. Vegetation and small mammals of a Victorian forest. Aust. Mammal. 3: 87–395.

    Google Scholar 

  • Henderson, M.T., Merriam, G. and Wegner, J. 1985. Patchy environments and species survival: chipmunks in an agricultural mosaic. Biol. Conserv. 31: 95–105.

    Google Scholar 

  • Jewell, P.A. 1966. The concept of home range in mammals. Symp. Zool. Soc. Lond. 18: 85–109.

    Google Scholar 

  • Lewis, T. 1969. The diversity of the insect fauna in a hedgerow and neighbouring fields. J. Appl. Ecol. 6: 453–458.

    Google Scholar 

  • Lidicker, W.Z. 1975. The role of dispersal in the demography of small mammals. In: Small Mammals: Their Productivity and Population Dynamics, pp. 103–128. Edited by F.B. Golley, K. Petrusewicz and L. Ryszkowski. Cambridge University Press, Cambridge.

    Google Scholar 

  • Lunney, D. 1983. Bush Rat Rattus fuscipes. In: The Complete Book of Australian Mammals, pp. 443–445. Edited by R. Strahan. Angus and Robertson, Australia.

    Google Scholar 

  • Mader, H.J. 1984. Animal habitat isolation by roads and agricultural fields. Biol. Conserv. 29: 81–96.

    Google Scholar 

  • Merriam, H.G. 1984. Connectivity: a fundamental ecological characteristic of landscape pattern. In: Methodology in Landscape Ecological Research and Planning. Vol. 1. pp. 5–15. Edited by J. Brandt and P.A. Agger. Roskilde, Denmark.

  • Middleton, W.G.D. 1980. Roadside vegetation, a habitat for wildlife. In: Roadsides of Today and Tomorrow. Roadsides Conservation Committee, Victoria.

    Google Scholar 

  • Noss, R.F. 1987. Corridors in real landscapes: a reply to Simberloff and Cox. Conserv. Biol. 1: 159–164.

    Google Scholar 

  • Osborne, P. 1984. Bird numbers and habitat characteristics in farmland hedgerows. J. Appl. Ecol. 21: 63–82.

    Google Scholar 

  • Oxley, D.J., Fenton, M.B. and Carmody, G.R. 1974. The effects of roads on populations of small mammals. J. Appl. Ecol. 11: 51–59.

    Google Scholar 

  • Pollard, E. and Relton, J. 1970. Hedges. V. A study of small mammals in hedges and cultivated fields. J. Appl. Ecol. 7: 549–557.

    Google Scholar 

  • Recher, H.F., Shields, J., Kavanagh, R. and Webb, G. 1987. Retaining remnant mature forest for nature conservation at Eden, New South Wales: a review of theory and practice. In: Nature Conservation: The Role of Remnants of Native Vegetation, pp. 177–194. Edited by D.A. Saunders, G.W. Arnold, A.A. Burbidge and A.J.M. Hopkins. Surrey Beatty and Sons, Sydney.

    Google Scholar 

  • Saunders, D.A. 1980. Food and movements of the short-billed form of the White-tailed Black Cockatoo. Aust. Wildl. Res. 7: 257–269.

    Google Scholar 

  • Savidge, I.R. 1973. A stream as a barrier to homing in Peromyscus leucopus. J. Mammal. 54: 982–984.

    Google Scholar 

  • Seebeck, J.H. 1981. Potorous tridactylus (Kerr.) (Marsupialia: Macropodidae): it's distribution, status and habitat preferences in Victoria. Aust. Wildl. Res. 8: 285–306.

    Google Scholar 

  • Shaffer, M.L. 1981. Minimum population sizes for species conservation. Bioscience 31: 131–134.

    Google Scholar 

  • Shaffer, M.L. and Samson, F.B. 1985. Population size and extinction: a note on determining critical population sizes. Am. Nat. 125: 144–151.

    Google Scholar 

  • Simberloff, D. and Cox, J. 1987. Consequences and costs of conservation corridors. Conserv. Biol. 1: 63–71.

    Google Scholar 

  • Soulé, M.E. and Simberloff, D. 1986. What do genetics and ecology tell us about the design of nature reserves. Biol. Conserv. 35: 19–40.

    Google Scholar 

  • Suckling, G.C. 1984. Population ecology of the sugar glider, Petaurus breviceps, in a system of fragmented habitats. Aust. Wild. Res. 11: 49–76.

    Google Scholar 

  • Way, J.M. 1977. Roadside verges and conservation in Britain: a review. Biol. Conserv. 12: 65–74.

    Google Scholar 

  • Wegner, J.F. and Merriam, G. 1979. Movements by birds and small mammals between a wood and adjoining farmland habitat. J. Appl. Ecol. 16: 349–357.

    Google Scholar 

  • Willis, E.O. 1974. Populations and local extinctions of birds on Barro Colorado Island, Panama. Ecol. Monogr. 44: 153–169.

    Google Scholar 

  • Wilson, E.O. and Willis, E.O. 1975. Applied biogeography. In: Ecology and Evolution of Communities. pp. 522–534. Edited by M.L. Cody and J.M. Diamond. Belknap Press, Cambridge, Mass.

    Google Scholar 

  • Yahner, R.H. 1983a. Small mammals in farmstead shelterbelts: habitat correlates of seasonal abundance and community structure. J. Wildl. Manage. 47: 74–84.

    Google Scholar 

  • Yahner, R.H. 1983b. Seasonal dynamics, habitat relationships and management of avifauna in farmstead shelterbelts. J. Wildl. Manage. 47: 85–104.

    Google Scholar 

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Author notes

  1. Andrew F. Bennett

    Present address: Arthur Rylah Institute for Environmental Research, National Parks and Wildlife Division, 123 Brown St., 3084, Heidelberg, Victoria, Australia

Authors and Affiliations

  1. Department of Zoology, University of Melbourne, 3052, Parkville, Victoria, Australia

    Andrew F. Bennett

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  1. Andrew F. Bennett
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Bennett, A.F. Habitat corridors and the conservation of small mammals in a fragmented forest environment. Landscape Ecol 4, 109–122 (1990). https://doi.org/10.1007/BF00132855

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