Changes in the earthworm community of an acidophilous lowland beech forest during a stand rotation |
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| Institution: | 1. Georg August University Göttingen, JFB Institute of Zoology and Anthropology, Berliner Str. 28, 37073 Göttingen, Germany;2. Bavarian Forest National Park, Freyunger Str. 2, 94481 Grafenau, Germany;1. Área de Botánica, Facultad de Ciencias, Universidad de Extremadura, Avda. de Elvas s.n., 06006 Badajoz, Spain;2. Real Jardín Botánico de Madrid, Consejo Superior de Investigaciones Científicas (RJB–CSIC), Plaza de Murillo 2, 28014 Madrid, Spain;3. Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EA, UK;1. Resources and Environmental Engineering College, Guizhou University, Guiyang 550025, China;2. School of Earth Sciences, The Ohio State University, Columbus, OH 43210, USA;1. Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), College of Life Sciences, Northwest University, Xi''an 710069, China;2. Molecular Ecology Group, State Key Laboratory of Grassland Agro-Ecosystem, College of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu, China;3. Key Laboratory of Biodiversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China;1. Centro de Investigaciones sobre Desertificación (CIDE, CSIC-Universidad de Valencia), Valencia, Spain;2. IES Clara Campoamor, Móstoles, Madrid, Spain (Consejería de Educación e Investigación, Comunidad de Madrid, Spain);3. Museo Geominero, Instituto Geológico y Minero de España, Madrid, Spain;4. CGG Robertson, Tyn-y-Coed, Llanrhos, Llandudno, LL30 1SA, United Kingdom;5. Departamento de Biología Vegetal y Ecología, Universidad de Sevilla, Sevilla, Spain;6. Facultad de Biología, Universidad de Murcia, Murcia, Spain |
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| Abstract: | The study examines humus profile development during a chronosequence consisting of four beech forest growth stages, and particularly the role of some components of soil fauna (lumbricid oligochaetes) on humus morphogenesis. An experimental site was set up in a lowland beech forest (Fougères state forest, eastern Brittany, France) to carry out a chronosequence analysis. This lowland beech forest is acidophilous, managed as an even-aged beech stand. The dominant tree species is beech (Fagus sylvatica L.). Samples were taken twice a year, from autumn 1997 to spring 2000 inclusive. Earthworms were caught after watering with formalin solutions. Only five species were found: three epigeic (litter-dwellers): Dendrobaena octaedra, D. rubida tenuis, Eisenia eiseni; one epi-anecic (litter/soil-dweller): Lumbricus rubellus; one endogeic (soil-dweller): Allolobophora caliginosa. D. octaedra is dominant in the four plots at densities ranging from 41 ind·m–2 (88 % of total earthworm population) to 12.4 ind·m–2 (99 % of total). Species richness and abundance are low in accordance with a moder humus form typical of acid soil conditions. Results are discussed according to plot heterogeneity, stand age, seasonal variations and functional diversity. |
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