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The efficiency of earthworm extraction methods is determined by species and soil properties in the Mediterranean communities of Central-Western Spain
- Source :
- European Journal of Soil Biology. 73:59-68
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- Given the well-known role of earthworms in the functioning and health of soils and whole ecosystems, feasible and reliable studies of their abundance and diversity in agricultural lands are essential for the effective design of best agricultural practices. However, previous work has shown that the extraction efficiency of different methods proposed seems to depend on species and size of earthworms and presumably on soil type, which makes creating an earthworm inventory difficult. In the present study, we compare the efficiency of five earthworm extraction methods combining hand-sorting with chemical expellants (hand-sorting, formalin, allyl isothiocyanate (AITC), formalin + hand-sorting and AITC + hand-sorting) over a wide range of soil properties (depth, texture and water regime) in cultivated and semi-natural habitats found in a Mediterranean region (CW-Spain). Sampling efficacy was measured in terms of number of earthworms extracted, taking into account different species, ecological groups, development stages, size of individuals, and soil properties. We found 20 species, only 6 endogeic and 1 anecic species being abundant. The anecic Aporrectodea trapezoides responded reasonably to chemical expellants, as did certain soil surface dwelling endogeic species (Microscolex phosphoreus and Microscolex dubius), with above 50% of specimens of these species sampled after chemical application. For other endogeic species, such as Allolobophora molleri and Aporrectodea rosea, chemical expellants gave poor results (
- Subjects :
- 0106 biological sciences
2. Zero hunger
Mediterranean climate
biology
Ecology
Range (biology)
Biología
Earthworm
Invertebrados
Soil Science
Edafología
04 agricultural and veterinary sciences
15. Life on land
Soil type
biology.organism_classification
010603 evolutionary biology
01 natural sciences
Microbiology
Abundance (ecology)
Insect Science
Soil water
040103 agronomy & agriculture
0401 agriculture, forestry, and fisheries
Species richness
Aporrectodea rosea
Subjects
Details
- ISSN :
- 11645563
- Volume :
- 73
- Database :
- OpenAIRE
- Journal :
- European Journal of Soil Biology
- Accession number :
- edsair.doi.dedup.....e8cb7c8326519be05f76f04012ec9cf4