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Effects of supplemental feed and white‐tailed deer density on vegetation

机译:补充饲料和白尾鹿密度对植被的影响

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Southwestern Texas is at the xeric edge of the range of white‐tailed deer ( Odocoileus v irginianus ) in North America.Land managers commonly provide dry, pelleted feeds to increase white‐tailed deer nutritional status.Provision of pelleted feeds may alleviate constraints on foraging time, enabling herbivores to selectively feed on the most palatable plants, potentially resulting in habitat degradation ( Murden and Risenhoover 1993 ).We tested the hypothesis that compared to no supplemental feeding, provision of pelleted feed results in habitat degradation.We predicated an interaction between increasing density of white‐tailed deer and feeding treatment, in which high density and supplemental feeding reduces canopy cover of forbs and shrubs eaten by deer and reduces forb species richness compared to low density and no supplemental feeding.
机译:德克萨斯州西南部位于北美白尾鹿(Odocoileus V Irginianus)系列的Xeric Edge.Land经理通常提供干燥的颗粒饲料,以增加白尾鹿营养状况。颗粒饲料的实施可能减轻对觅食的限制时间,使食草动物能够选择性地饲养最适人的植物,可能导致栖息地降解(Murden和Risenhoover 1993)。我们测试了与无补充喂养相比的假设,提供栖息地降解的颗粒状饲料导致栖息地。我们之间的相互作用增加白尾鹿和饲养处理的密度,其中高密度和补充喂养减少了鹿食用的牙孔和灌木的冠层覆盖,并与低密度相比减少了Forb物种丰富性,并且没有补充饲料。

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