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首页> 外文期刊>Proceedings of the Arkansas Academy of Science >Distribution of Baird's Pocket Gopher (Geomys breviceps) In Arkansas With Additional County Records
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Distribution of Baird's Pocket Gopher (Geomys breviceps) In Arkansas With Additional County Records

机译：带有其他县级记录的阿肯色州贝尔德袖珍地鼠（Geomys breviceps）的分布

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摘要

Recently, a population of pocket gophers in the north-central portion of Arkansas was determined to be the plains pocket gopher (Geomys bursarius), rather than Baird's pocket gopher (Geomys breviceps). This changed the known range of both species extensively. A detailed examination of the known range of Baird's pocket gophers (G. breviceps) in Arkansas resulted in 12 new county records. Biogeographically, G. breviceps appears to be found in all physiographic regions within the state with the possible exception of Crowley's ridge. It is most common in the Gulf Coastal Plain and rarest in the Mississippi Alluvial Plain. The distribution of G. breviceps is consistent with the hypothesis that glaciation events, together with northward invasions from Louisiana and eastern Texas and eastward invasions from Oklahoma (around the Ouachita Mountains) were major creational forces in the establishment of the present G. breviceps distribution in Arkansas.
机译：最近，确定了阿肯色州中北部部分的袋鼠是平原袋鼠（Geomys bursarius），而不是贝尔德的袋鼠（Geomys breviceps）。这极大地改变了两个物种的已知范围。在阿肯色州对已知的Baird袋鼠（G. breviceps）范围进行的详细检查产生了12个新的县记录。在生物地理学上，该州的所有自然地理区域似乎都发现了短角线虫，可能是克劳利山脊除外。它在墨西哥湾沿岸平原最常见，在密西西比冲积平原上最罕见。 breviceps的分布与这样的假设是一致的：冰川事件，路易斯安那州和得克萨斯州东部的北入侵以及俄克拉荷马州（位于瓦希塔山脉附近）的东入侵是建立目前breviceps分布的主要创造力。阿肯色州。

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