Influence of earthworms on the sulfur turnover in the soil

被引:4
作者
Grethe, S [1 ]
Schrader, S [1 ]
Giesemann, A [1 ]
Larink, O [1 ]
Weigel, HJ [1 ]
机构
[1] FAL BRAUNSCHWEIG,INST ECOTOXICOL,BRAUNSCHWEIG,GERMANY
关键词
Aporrectodea caliginosa; earthworm casts; Lumbricus terrestris; soil; stable isotopes; sulfur turnover; sulfur; 34;
D O I
10.1080/10256019608036313
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The effects of earthworm activity on the concentration and isotopic composition of total sulfur in soils was investigated using batch experiments. Two ecologically different lumbricid species, the anecic Lumbricus terrestris and the endogeic Aporrectodea caliginosa, were used. The earthworms were fed birch leaves, beech leaves, cattle manure or mixed plant litter. All food sources differed isotopically (delta(34)S) from the soil (Parabraunerde). As a reference, one experiment was carried out without additional food. The experimental results show, that both earthworm species influence the total S-content and the delta(34)S-values in the soil by digestion of the different food sources. The differences in the total S-content of the earthworm tissues and in the S-isotopic composition of the casts can be attributed to the ecological differences between the earthworm species.
引用
收藏
页码:211 / 217
页数:7
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