EFFECTS OF A RAIN-FOREST ROAD ON MOVEMENTS OF SMALL MAMMALS - MECHANISMS AND IMPLICATIONS

被引:51
作者
BURNETT, SE
机构
[1] Zoology Department, James Cook University of North Queensland, Townsville, QLD
关键词
D O I
10.1071/WR9920095
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Live-trapping was used to study the effects of a road on the movements of four species of terrestrial and scansorial rainforest mammals at Mt Spec, north Queensland. When baited traps were set on both sides of the road during grid-trapping, the road-crossing rate of Uromys caudimaculatus (20% of recorded movements) was significantly greater than that of Rattus fuscipes and Antechinus flavipes (1.8% and 5.2% of movements, respectively). No Melomys cervinipes was recorded to cross the road under these conditions. R. fuscipes, M. cervinipes and A. flavipes were induced to cross the road more often by placing baited traps on only one side of the road during the baiting experiment. The crossing rate of R. fuscipes was also increased by translocating individuals across the road. I attribute the inhibition of movement caused by roads to psychological or sociological characteristics of the species and/or the individual, rather than to an effect of a physical barrier per se. My data suggest that the threat of genetic isolation of populations of these species dissected by roads less than 12 m wide is slight. This study represents a best-case scenario: less-mobile species and/or wider roads may result in genetic isolation. Measures are suggested that would be expected to alleviate the barrier effects of roads where they may occur.
引用
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页码:95 / 104
页数:10
相关论文
共 15 条
[1]  
BAKOWSKI C, 1988, ACTA THERIOL, V33, P345
[2]  
BARNETT JL, 1978, AUSTR J ECOLOGY, V3, P227
[3]  
CARPENTER FL, 1987, AM ZOOL, V27, P401
[4]  
HOCKINGS M, 1981, AUST WILDLIFE RES, V8, P97
[5]  
HUNT A, 1987, Australian Zoologist, V24, P89
[6]  
KING DH, 1978, THESIS AUSTR NATIONA
[7]   ANIMAL HABITAT ISOLATION BY ROADS AND AGRICULTURAL FIELDS [J].
MADER, HJ .
BIOLOGICAL CONSERVATION, 1984, 29 (01) :81-96
[8]   AN ANALYSIS OF ANIMAL VICTIMS ON NEBRASKAS HIGHWAYS [J].
MCCLURE, HE .
JOURNAL OF WILDLIFE MANAGEMENT, 1951, 15 (04) :410-420
[9]   EFFECTS OF ROADS ON POPULATIONS OF SMALL MAMMALS [J].
OXLEY, DJ ;
FENTON, MB ;
CARMODY, GR .
JOURNAL OF APPLIED ECOLOGY, 1974, 11 (01) :51-59
[10]  
RUSSELL CF, 1978, AM MIDL NAT, V100, P400