Sammanfattning

The aim of this study was to find out if field boundaries are refuges for earthworms from where they can spread out into the agricultural fields, thereby keeping up their abundance and biodiversity. The earthworm community was studied in: (1) a 640 in long field boundary; (2) the adjacent arable field at different distances from the boundary; (3) a pasture adjoining to the opposite side of the field near Uppsala in Sweden. Sampling was done in May and September. In contradiction to what was preconceived, the abundance and biomass of earthworms, both in the boundary and the pasture, was significantly lower than that in the agricultural field. The density increased towards the centre of the field. The trends were similar for both spring and autumn. The same species were found in the field, boundary and pasture, but Aporrectodea caliginosa was more dominant in the field than in the other habitats. The conclusion is that agriculture with manure, fertilisers, moderate soil cultivation and varying crops, in general, is favourable for earthworms, except for certain species. However, situations can occur when the earthworm populations in the field decline, and then boundaries may serve as sources from where re-immigration can take place. (C) 2002 Elsevier Science B.V. All rights reserved.

Nyckelord

earthworms; agricultural landscape; field boundary; pasture; Sweden

Publicerad i

Agriculture, Ecosystems and Environment
2002, Volym: 89, nummer: 1-2, sidor: 91-103

SLU författare

• Lagerlöf, Jan

  • Institutionen för ekologi och växtproduktionslära, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Ekologi


Publikationens identifierare

DOI: https://doi.org/10.1016/S0167-8809(01)00321-8

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/91743