Yliopiston etusivulle Suomeksi På svenska In English Helsingin yliopisto

Cadmium in insects after ash fertilization

Show full item record

Avaa tiedosto Vie RefWorksiin
Title: Cadmium in insects after ash fertilization
Author: Lodenius, Martin; Josefsson, Jussi; Heliövaara, Kari; Tulisalo, Esa; Nummelin, Matti
Belongs to series: Insect Science - 16 (1)
ISSN: 1672-9609
Abstract: Ash fertilization of forests returns nutrients to forest ecosystems and has a positive effect on soil pH, but it also may elevate Cd concentrations of forest biota. Cadmium concentrations of some forest insects (Formica ants, carabids and Coleopteran larvae from decaying wood) were investigated in southern Finland, where two plots were fertilized with wood ash, while two other plots represented unfertilized control plots. In ants, mean Cd concentration was 3.6 ± 1.4 mg/kg, with nest workers having significantly higher concentrations than workers trapped in pitfall traps. Concentrations at fertilized and unfertilized plots were similar. In carabid beetles, the average Cd concentration of Carabus glabratus was 0.44 ± 0.36 mg/kg, with no significant difference between control plots and fertilized plots. In another carabid beetle, Pterostichus niger, mean Cd concentration was higher at fertilized plots compared to control plots. We conclude that the variation of Cd concentrations in the insects studied is more efficiently controlled by species-specific differences than fertilization history of the forest floor.
URI: http://hdl.handle.net/1975/8543
Date: 2009-01

Files in this item

Files Description Size Format View/Open
2009r-Cadmium i ... fter ash fertilization.pdf 265.0Kb PDF View/Open
This item appears in the following Collection(s)

Show full item record

Search Helda


Advanced Search

Browse

My Account