Assimilation of Aboveground Litter Carbon Versus Soil Carbon by Collembola and Lumbricidae in Spruce Forest: A Litter Replacement Experiment

IF 0.4 4区 环境科学与生态学 Q4 ECOLOGY Polish Journal of Ecology Pub Date : 2020-09-22 DOI:10.3161/15052249PJE2020.68.2.006
E. E. Semenina, A. Tiunov
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引用次数: 1

Abstract

ABSTRACT In a small-scale field experiment, we estimated the contribution of aboveground litter to the energy budget of different collembolan and earthworm species. In a 50-year-old spruce plantation, the natural spruce litter was replaced by an equivalent amount of maize litter. The natural difference in the isotopic composition of carbon (C) between the spruce and maize allowed us to estimate the proportions of different carbon sources in the tissues of soil animals. The dependence on litter-derived C was least pronounced in Collembola having low δ15N values, indicating the feeding on non-vascular plants. In contrast, collembolans having high δ15N values belonged to the food chains based on fresh plant residuals. These results suggest that different species of litter-dwelling collembolans may regulate substantially different energy channels. Some species of endogeic earthworms (Aporrectodea rosea and A. caliginosa) utilize aboveground plant residues, though soil organic matter and other belowground sources of carbon prevail in the energy budget of their populations.
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云杉林线虫和蚓科对地上凋落物碳对土壤碳的同化:凋落物置换试验
摘要在一个小规模的野外实验中,我们估计了地上垃圾对不同弹尾虫和蚯蚓物种能量预算的贡献。在一个有50年历史的云杉种植园中,天然云杉枯枝落叶被等量的玉米枯枝落叶所取代。云杉和玉米之间碳(C)同位素组成的自然差异使我们能够估计土壤动物组织中不同碳源的比例。δ15N值较低的弹尾虫对枯枝落叶碳的依赖性最不明显,表明其以非维管植物为食。相比之下,具有高δ15N值的弹尾虫属于基于新鲜植物残留物的食物链。这些结果表明,不同种类的生活在枯枝落叶中的弹弹子可能调节显著不同的能量通道。一些物种的内生蚯蚓(Aporrectodea rosea和A.caliginosa)利用地上植物残留物,尽管土壤有机物和其他地下碳源在其种群的能源预算中占主导地位。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Polish Journal of Ecology
Polish Journal of Ecology 环境科学-生态学
CiteScore
1.10
自引率
0.00%
发文量
9
审稿时长
18-36 weeks
期刊介绍: POLISH JOURNAL OF ECOLOGY (formerly Ekologia polska) publishes original scientific research papers dealing with all aspects of ecology: both fundamental and applied, physiological ecology, evolutionary ecology, ecology of population, community, ecosystem, landscape as well as global ecology. There is no bias regarding taxons, ecosystems or geographical regions.
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