caa a22 4500 605517339 CHVBK 20210128100719.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s10533-015-0164-6 doi (NATIONALLICENCE)springer-10.1007/s10533-015-0164-6 Exotic earthworm community composition interacts with soil texture to affect redistribution and retention of litter-derived C and N in northern temperate forest soils [Elektronische Daten] [Jasmine Crumsey, Yvan Capowiez, Mitch Goodsitt, Sandra Larson, James Le Moine, Jeffrey Bird, George Kling, Knute Nadelhoffer] Exotic earthworm impacts on temperate forest soils are influenced by earthworm community composition and are likely constrained by the degree of organic matter redistribution following earthworm introductions across different soil types; however, the relative importance of these factors remains unknown. We examined how exotic earthworm communities affected leaf litter carbon (C) and nitrogen (N) mineralization and transport in two Spodosols with contrasting textures and organic matter contents. In reconstructed soil mesocosms, we measured organic C pools, quantified 13C and 15N transport from isotopically labeled red maple (Acer rubrum) leaf litter, and linked leaf litter redistribution to sub-surface burrow system structures following 150-day incubations. Transport of C and N from surface litter into soil was greatest with multi-species earthworm communities, and A-horizon and burrow pools functioned as dominant sinks for this material. Litter-derived C:N recovery ratios of soil pools revealed higher retention of litter-derived N over litter-derived C; recovery of litter N (mg 15Nm−2) transported from surface litter was greater in the sandy loam (98.2±2.73%) than in the sandy soil (66.2±4.92%) following earthworm community additions. Earthworm biomass was as a minor sink for litter C (mg 13C m−2) and N transported from surface litter (0.56±0.13 and 2.26±0.31%, respectively). Recovery of litter-derived C and N in earthworm biomass increased with the degree of direct leaf litter consumption (A. trapezoides<E. fetida<L. terrestris). Surface-dwelling epigeic and mineral-soil dwelling endogeic species produced burrow systems with the highest volume, surface connectivity, and density in the A-horizon; these properties were associated with greater CO2 losses and with greater litter C and N transport into A-horizons and burrows. Burrow systems with high continuity and large burrows produced by vertical-burrowing anecic species were associated with greater litter C and N transport into B-horizons, and greater dissolved organic C leaching losses. This study shows that the degree of organic matter redistribution in temperate forest soils following earthworm introductions is directly related to earthworm community composition, while the preferential retention of N over C and the potential stabilization of this material is determined by soil type. Springer International Publishing Switzerland, 2015 Carbon nationallicence Exotic earthworm community nationallicence Leaf litter nationallicence Nitrogen nationallicence Stable isotope tracer nationallicence Temperate forest soil nationallicence X-ray computed tomography nationallicence Crumsey Jasmine Department of Ecology and Evolutionary Biology, University of Michigan, 48109, Ann Arbor, MI, USA aut Capowiez Yvan French National Institute for Agricultural Research - Institut National de la Recherche Agronomique (INRA), UR 1115 Plantes et Systèmes Horticoles, 84914, Avignon Cedex 09, France aut Goodsitt Mitch Department of Radiology, University of Michigan, 48109, Ann Arbor, MI, USA aut Larson Sandra Department of Radiology, University of Michigan, 48109, Ann Arbor, MI, USA aut Le Moine James Department of Ecology and Evolutionary Biology, University of Michigan, 48109, Ann Arbor, MI, USA aut Bird Jeffrey School of Earth and Environmental Sciences, Queens College, City University of New York, 11367, Flushing, NY, USA aut Kling George Department of Ecology and Evolutionary Biology, University of Michigan, 48109, Ann Arbor, MI, USA aut Nadelhoffer Knute Department of Ecology and Evolutionary Biology, University of Michigan, 48109, Ann Arbor, MI, USA aut Biogeochemistry Springer International Publishing 126/3(2015-12-01), 379-395 0168-2563 126:3<379 2015 126 10533 https://doi.org/10.1007/s10533-015-0164-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10533-015-0164-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Crumsey Jasmine Department of Ecology and Evolutionary Biology, University of Michigan, 48109, Ann Arbor, MI, USA aut NATIONALLICENCE 700 1- Capowiez Yvan French National Institute for Agricultural Research - Institut National de la Recherche Agronomique (INRA), UR 1115 Plantes et Systèmes Horticoles, 84914, Avignon Cedex 09, France aut NATIONALLICENCE 700 1- Goodsitt Mitch Department of Radiology, University of Michigan, 48109, Ann Arbor, MI, USA aut NATIONALLICENCE 700 1- Larson Sandra Department of Radiology, University of Michigan, 48109, Ann Arbor, MI, USA aut NATIONALLICENCE 700 1- Le Moine James Department of Ecology and Evolutionary Biology, University of Michigan, 48109, Ann Arbor, MI, USA aut NATIONALLICENCE 700 1- Bird Jeffrey School of Earth and Environmental Sciences, Queens College, City University of New York, 11367, Flushing, NY, USA aut NATIONALLICENCE 700 1- Kling George Department of Ecology and Evolutionary Biology, University of Michigan, 48109, Ann Arbor, MI, USA aut NATIONALLICENCE 700 1- Nadelhoffer Knute Department of Ecology and Evolutionary Biology, University of Michigan, 48109, Ann Arbor, MI, USA aut NATIONALLICENCE 773 0- Biogeochemistry Springer International Publishing 126/3(2015-12-01), 379-395 0168-2563 126:3<379 2015 126 10533