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首页> 外文期刊>Michigan Academician >Herpetological Assemblages of the Michigan Regional Landscape Ecosystems
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Herpetological Assemblages of the Michigan Regional Landscape Ecosystems

机译：密歇根州地区景观生态系统的爬虫学组合

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The herpetofauna of each of the four Michigan Regional Landscape Ecosystems (Region Ⅰ, southern Lower Peninsula; Ⅱ, northern LP; Ⅲ, eastern Upper Peninsula; Ⅳ, western Upper Peninsula) was determined based on museum specimens and records from ongoing studies. These regional herpetofaunas were compared on the basis of (1) taxonomic diversity at the species level; (2) presence of Primary, Secondary, and Tertiary re-entrant post-glacial taxa; (3) presence of gaps in the distribution of widespread regional taxa; and (4) presence of relict species. Region Ⅰ is the most taxonomically diverse having 94.4% of the species that occur in Michigan. Region Ⅱ is somewhat less diverse having 90.2% of Ⅰ. Regions Ⅲ and Ⅳ are much Jess specifically diverse than Ⅰ and Ⅱ; Ⅲ having 64.7% and Ⅳ having 66.7% of Ⅰ. The main difference comes from the fact that reptiles are much less specifically diverse in Ⅲ and Ⅳ than in Ⅰ and Ⅱ—where Ⅱ has 93.1 %, Ⅲ only 51.7%, and Ⅳ only 55.2% of Ⅰ. Amphibian diversity is relatively constant in all three northern regions where Ⅱ has 86.4%, Ⅲ 81.8% and Ⅳ 81.8% of Ⅰ. Region Ⅰ has six Tertiary re-entrant taxa but Ⅱ, Ⅲ, and Ⅳ have none of these. Region Ⅰ has significantly more gaps in the distribution of generally widespread taxa (20 species) than the other regions. Region Ⅰ has five relict species, Ⅱ has six, Ⅲ has five, and Ⅳ has three. These relict populations may be mainly due to a significant warm, dry spell (hypsithermal) in the mid-Holocene and a significant cold spell (Little Ice Age) at the end of the Holocene.
机译：根据博物馆标本和进行中的研究记录，确定了密歇根州四个区域景观生态系统（区域Ⅰ，下部半岛南部；Ⅱ，北部LP；Ⅲ，上部半岛东部；Ⅳ，上部半岛西部）中的爬行动物。根据以下方面对这些区域性疱疹双峰进行了比较：（1）在物种水平上的分类学多样性； （2）存在主要，次要和第三次折返的冰川后分类群； （3）在广泛的区域生物分类的分布方面存在差距； （4）遗存物种的存在。 Ⅰ区是分类学上最多样化的，占密歇根州物种的94.4％。 Ⅱ区的多样性稍差一些，占Ⅰ区的90.2％。区域Ⅲ和Ⅳ比Ⅰ和Ⅱ有很大的杰西差异; Ⅲ占Ⅰ的64.7％，Ⅳ占66.7％。主要区别在于，爬行动物在Ⅲ和Ⅳ中的特异性差异远小于Ⅰ和Ⅱ，其中Ⅱ占Ⅰ的比例为93.1％，Ⅲ仅为51.7％，Ⅳ仅为55.2％。在北部三个地区中，两栖动物多样性相对恒定，其中Ⅱ占Ⅰ的86.4％，Ⅲ占81.8％和Ⅳ的81.8％。区域Ⅰ有6个第三级折返类群，而Ⅱ，Ⅲ和Ⅳ没有。与其他地区相比，第一类地区在普遍分布的分类单元（20种）的分布上存在更大的缺口。区域Ⅰ有五种遗物，Ⅱ有六种，Ⅲ有五种，Ⅳ有三种。这些遗物种群可能主要是由于全新世中期明显的温暖干燥干旱（高温热）和全新世末期明显的寒冷寒冷（小冰期）。

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