Relative abundance and seasonal activity of earthworms (Lumbricidae and Megascolecidae) as determined by hand-sorting and formalin extraction in forest soils on the southern Appalachian Piedmont
Relative abundance and seasonal activity of earthworms (Lumbricidae and Megascolecidae) as determined by hand-sorting and formalin extraction in forest soils on the southern Appalachian Piedmont
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DOI：
10.1016/s0038-0717(96)00095-8
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发表时间：
1997-03-01
影响因子：
9.7
通讯作者：
Hendrix, PF
中科院分区：
文献类型：
--
作者：
Callaham, MA;Hendrix, PF
蚯蚓不同采样方法的相对效率可能因场地特征、季节和蚯蚓种类而异。我们进行了一项研究，其中蚯蚓收集手工分拣和福尔马林提取的演替，混合硬木松树林。根据季节趋势、土壤物理性质和采集的物种评估了每种采集技术的效率。蚯蚓群落年龄结构和季节性温度和湿度趋势是每种技术效率最不可或缺的因素。结果表明，在一年中的部分小的少年蚯蚓是最丰富的（11月至5月），手工分选是远远优于福尔马林提取上级。然而，在该年余下的时间里，这两种技术的效率没有显著差异。福尔马林浸提法比手工分选法更能有效地收集蚯蚓，但对其他物种却没有土壤的物理性质，如pH值和质地，而重要的蚯蚓的分布模式，并没有显着影响的收集技术的效率。(C)1997 Elsevier Science Ltd.
The relative efficiency of different sampling methods for earthworms may vary with site characteristics, season and earthworm species. We conducted a study in which earthworms were collected by hand-sorting and by formalin extraction in a successional, mixed hardwood-pine forest. The efficiency of each collecting technique was assessed in terms of seasonal trends, soil physical properties and species collected. Earthworm community age structure and seasonal temperature and moisture trends were the factors most integral to the efficiency of each technique. Results indicate that for the part of the year in which small juvenile earthworms were most abundant (November-May), hand-sorting was far superior to formalin extraction. However, for the remainder of the year, the efficiency of the two techniques did not vary significantly. The formalin extraction method was more effective than hand-sorting for the collection of Lumbricus terrestris L., but not for any other species. Soil physical properties such as pH and texture, while important in distributional patterns of earthworms, did not have a significant effect on the efficiency of the collection techniques. (C) 1997 Elsevier Science Ltd.