Litter Controls Earthworm-Mediated Carbon and Nitrogen Transformations in Soil from Temperate Riparian Buffers
Joint Authors
Kernecker, Maria
Bradley, Robert L.
Whalen, Joann
Source
Applied and Environmental Soil Science
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-09-14
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Earth Science , Water and Environment
Abstract EN
Nutrient cycling in riparian buffers is partly influenced by decomposition of crop, grass, and native tree species litter.
Nonnative earthworms in riparian soils in southern Quebec are expected to speed the processes of litter decomposition and nitrogen (N) mineralization, increasing carbon (C) and N losses in gaseous forms or via leachate.
A 5-month microcosm experiment evaluated the effect of Aporrectodea turgida on the decomposition of 3 litter types (deciduous leaves, reed canarygrass, and soybean stem residue).
Earthworms increased CO2 and N2O losses from microcosms with soybean residue, by 112% and 670%, respectively, but reduced CO2 and N2O fluxes from microcosms with reed canarygrass by 120% and 220%, respectively.
Litter type controlled the CO2 flux (soybean ≥ deciduous-mix litter = reed canarygrass > no litter) and the N2O flux (soybean ≥ no litter ≥ reed canarygrass > deciduous-mix litter).
However, in the presence of earthworms, there was a slight increase in C and N gaseous losses of C and N relative to their losses via leachate, across litter treatments.
We conclude that litter type determines the earthworm-mediated decomposition effect, highlighting the importance of vegetation management in controlling C and N losses from riparian buffers to the environment.
American Psychological Association (APA)
Kernecker, Maria& Whalen, Joann& Bradley, Robert L.. 2014. Litter Controls Earthworm-Mediated Carbon and Nitrogen Transformations in Soil from Temperate Riparian Buffers. Applied and Environmental Soil Science،Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-1015325
Modern Language Association (MLA)
Kernecker, Maria…[et al.]. Litter Controls Earthworm-Mediated Carbon and Nitrogen Transformations in Soil from Temperate Riparian Buffers. Applied and Environmental Soil Science No. 2014 (2014), pp.1-12.
https://search.emarefa.net/detail/BIM-1015325
American Medical Association (AMA)
Kernecker, Maria& Whalen, Joann& Bradley, Robert L.. Litter Controls Earthworm-Mediated Carbon and Nitrogen Transformations in Soil from Temperate Riparian Buffers. Applied and Environmental Soil Science. 2014. Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-1015325
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1015325