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首页> 外文期刊>Conservation Biology >Rodent communities in an exurbanizing southwestern landscape (USA)
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Rodent communities in an exurbanizing southwestern landscape (USA)

机译：西南地区令人生厌的啮齿类动物群落（美国）

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摘要

Ranches are being converted to exurban housing developments in the southwestern United States, with potentially significant but little-studied impacts on biological diversity. We captured rodents on 48 traplines in grasslands, mesquite savannas, and oak savannas in southeastern Arizona that were grazed by livestock, embedded in exurban housing developments, grazed and embedded in development, or neither grazed nor embedded in development Independent of habitat or development, rodent species richness, mean rank abundance, and capture rates of all rodents combined were negatively related to presence of livestock grazing or to its effects on vegetative ground cover. Exurban development bad no obvious effects on rodent variety or abundance. Results suggest southwestern exurban developments can sustain a rich assemblage of grassland and savanna rodents if housing densities are low and houses are embedded in a matrix of natural vegetation with little grazing.
机译：牧场正在转变为美国西南部郊区的住房发展，可能对生物多样性产生重大影响，但研究很少。我们在亚利桑那州东南部的草原，豆科灌木大草原和橡树大草原上的48条陷阱线上捕获了啮齿动物，这些啮齿动物被牲畜放牧，嵌入郊区房屋开发，放牧并嵌入开发中，或者既没有放牧也不嵌入开发中与啮齿动物无关物种丰富度，平均等级丰度和所有啮齿动物的捕获率均与放牧牲畜或其对植物地被覆的影响负相关。市郊发展不好对啮齿动物的品种或丰度没有明显影响。结果表明，如果房屋密度低并且房屋被埋在几乎没有放牧的自然植被矩阵中，西南郊区的发展将能够维持大量的草地和热带稀树鼠。

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