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首页> 外文期刊>Northeastern Naturalist >The Relative Abundance of Eastern Red-Backed Salamanders in Eastern Hemlock-dominated and Mixed Deciduous Forests at Harvard Forest
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The Relative Abundance of Eastern Red-Backed Salamanders in Eastern Hemlock-dominated and Mixed Deciduous Forests at Harvard Forest

机译：哈佛森林东部以铁杉为主的混合落叶林中东部红背Sal的相对丰度

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摘要

In anticipation of the loss of Tsuga canadensis (Eastern Hemlock) dominated forests due to infestation by Adelges tsugae (Hemlock Woolly Adelgid), this study assessed the relative abundance of the ecologically important terrestrial salamander, Plethodon cinereus Green (Eastern Red-backed Salamander), in five Eastern Hemlock-dominated stands and four mixed deciduous stands at Harvard Forest in Petersham, MA. Pooling data from four seasons (fall 2003-fall 2004; excluding winter), the relative abundance of P. cinereus as measured by the monitoring of artificial cover objects (ACOs) was significantly higher in Eastern Hemlock-dominated stands than in mixed deciduous stands (n = 444 P. cinereus observations). The relative abundance of P. cinereus was not significantly different in the two forest types as measured by natural cover object (NCO) searches over two seasons (fall 2003 and spring 2004), although sample sizes were small (n = 45 P. cinereus observations). This evidence that Eastern Hemlock-dominated forests provide equal or greater quality habitat for P. cinereus as mixed deciduous forests at Harvard Forest contrasts with studies from other areas of Eastern Hemlock's range, which have found the abundance of P. cinereus to be lower in this forest type. The conversion of Eastern Hemlock-dominated forest to mixed deciduous forest will have either have a negative impact or no impact on the relative abundance of P. cinereus at Harvard Forest.
机译：预期由于Adelges tsugae（Hemlock Woolly Adelgid）的侵染而导致加拿大加那加（Tsuga canadensis）（东部铁杉）丧失的森林，这项研究评估了具有生态重要性的陆地sal（Plethodon cinereus Green（东部红背Sal））的相对丰富度，在马萨诸塞州彼得舍姆的哈佛森林的五个东部铁汉木占主导地位的林分和四个混合落叶林中。汇总四个季节（2003年秋季至2004年秋季;不包括冬季）的数据，通过监测人工覆盖物（ACO）测得的灰绿假单胞菌的相对丰度在东部铁汉木占主导地位的林分中显着高于混合落叶乔木（ n = 444个电影灰霉病观察）。通过两个季节（2003年秋季和2004年春季）的自然覆盖物（NCO）搜索来测量，两种森林类型中灰霉病的相对丰度没有显着差异，尽管样本量很小（n = 45灰霉病观察）。这证明了东部铁杉以森林为主，为哈佛大学提供了同等或更高质量的栖息地，因为哈佛森林的混合落叶林与东部铁杉范围内其他地区的研究相反，该研究发现，在此范围内，杉木的丰度较低。森林类型。东部铁杉为主的森林向落叶落叶混合林的转化将对哈佛森林的灰黄对虾相对丰度产生负面影响或没有影响。

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