Casts of Aporrectodea caliginosa (Savigny) and Lumbricus rubellus (Hoffmeister) differ in microbial activity, nutrient availability and aggregate stability

Haynes, Richard J., Fraser, Patricia M., Piercy, Jacqueline E. and Tregurtha, Rebekah J. (2003) Casts of Aporrectodea caliginosa (Savigny) and Lumbricus rubellus (Hoffmeister) differ in microbial activity, nutrient availability and aggregate stability. Pedobiologia, 47 5-6: 882-887. doi:10.1016/S0031-4056(04)70284-X


Author Haynes, Richard J.
Fraser, Patricia M.
Piercy, Jacqueline E.
Tregurtha, Rebekah J.
Title Casts of Aporrectodea caliginosa (Savigny) and Lumbricus rubellus (Hoffmeister) differ in microbial activity, nutrient availability and aggregate stability
Journal name Pedobiologia   Check publisher's open access policy
ISSN 0031-4056
Publication date 2003
Sub-type Article (original research)
DOI 10.1016/S0031-4056(04)70284-X
Volume 47
Issue 5-6
Start page 882
End page 887
Total pages 6
Place of publication Jena
Publisher Urban & Fischer Verlag
Language eng
Subject 0607 Plant Biology
0703 Crop and Pasture Production
0503 Soil Sciences
Abstract The microbial activity, nutrient availability and aggregate stability of casts of the endogeic earthworm, Aporrectodea caliginosa, and the epigeic species, Lumbricus rubellus, were compared with that of uningested soil. Casts were collected 48 hours after introducing earthworms of each species to containers which were filled with 15 cm of soil covered with a 5 cm layer of decomposing lucerne hay. Microbial biomass C, flourescein diacetate hydrolysis rate, aggregate stability and hot water-extractable carbohydrates tended to be lower in casts than uningested soil while the reverse was the case for light fraction C, basal respiration, metabolic quotient, exchangeable NH4+- and NO3 -N, Olsen P and phosphate-extractable SO42--S. Casts evidently contained a smaller, but more metabolically active, microbial community than soil. Values for all measured parameters were appreciable higher in casts of L. rubellus than those of A. caliginosa. This was attributed to the greater amounts of surface litter (lucerne hay) ingested by the former due to its epigeic habit.
Keyword Ecology
earthworm casts
soil microbial activity
nutrient availability
aggregate stability
epigeic
endogeic
Earthworm Casts
Biomass-c
Soil
Carbon
Respiration
Terrestris
Passage
Wheat
Straw
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Agriculture and Food Sciences
 
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Created: Wed, 17 Oct 2007, 12:35:27 EST