Effects of tropical rainforest roads on small mammals: inhibition of crossing movements

作者: Miriam Goosem

DOI: 10.1071/WR99093

关键词: CulvertRainforestEcologyBiologyTropical rainforestBiodiversitySeasonal breederUromys caudimaculatusMelomys cervinipesBiological dispersal

摘要: Along a narrow, unsealed road through rainforest in north-eastern Queensland, movements of small mammals were examined to determine whether the would inhibit crossings, thereby causing linear barrier effects. Crossings 12- or 20-m-wide clearing by Melomys cervinipes severely inhibited, crossing inhibition Rattus sp. was less severe, while crossings Uromys caudimaculatus unaffected. This differential effect attributed species differences size, mobility and behaviour. Baiting on only one side increased rates for all species. During breeding season, 20-m clearings almost completely inhibited significantly fewer than 12-m clearings. Clearing width had little rate outside season. Seasonal dispersal juvenile animals appeared explain this discrepancy clearing-width likely cross where there no vegetative cover at entrance culvert both entrances. Linear effects may be mitigated narrower road-clearing widths, replanting grassy verges resulting entrances canopy closure above road, providing more faunal underpasses.

参考文章(25)
A F Bennett, ROADS, ROADSIDES AND WILDLIFE CONSERVATION: A REVIEW NATURE CONSERVATION 2: THE ROLE OF CORRIDORS. ,(1991)
Cezary Bąkowski, Michał Kozakiewicz, The effect of forest road on bank vole and yellow-necked mouse populations Acta Theriologica. ,vol. 33, pp. 345- 353 ,(1988) , 10.4098/AT.ARCH.88-28
Miguel Yanes, José M. Velasco, Francisco Suárez, Permeability of roads and railways to vertebrates: The importance of culverts Biological Conservation. ,vol. 71, pp. 217- 222 ,(1995) , 10.1016/0006-3207(94)00028-O
Stephen H. Allen, Alan B. Sargeant, Dispersal patterns of red foxes relative to population density Journal of Wildlife Management. ,vol. 57, pp. 526- 533 ,(1993) , 10.2307/3809277
Miriam Goosem, Helene Marsh, Fragmentation of a small mammal community by a powerline corridor through tropical rainforest Wildlife Research. ,vol. 24, pp. 613- 629 ,(1997) , 10.1071/WR96063
H.-J. Mader, Animal habitat isolation by roads and agricultural fields Biological Conservation. ,vol. 29, pp. 81- 96 ,(1984) , 10.1016/0006-3207(84)90015-6