title: Combined effect of copper and prolonged summer drought on soil microarthropods in the field.
abstract: Soil microarthropods experience a large range of natural stressors in their natural environment, e.g. variations in temperature and soil moisture, but also anthropogenic stressors such as soil pollutants. In the present study the combined effect of drought stress and copper pollution on microarthropods was investigated in a field study. We hypothesised that microarthropods in copper polluted soil would be more susceptible to drought than animals in control soil. Surprisingly, the abundance of microarthropods in autumn was positively affected by summer drought and copper pollution did not influence the effect of drought in a negative way. The stimulation was mainly seen as an increase of Acari, but also groups of Collembola were positively affected. We suggest that the positive effect of the enforced summer drought could be due to a rapid recovery, which further is accelerated by an increase of food resources (microbes) which have not been utilized during the drought.
authors.affiliation: Department of Terrestrial Ecology, National Environmental Research Institute, P.O. Box 314, Vejlsøvej 25, DK-8600 Silkeborg, Denmark. martin.holmstrup@dmu.dk
authors.forename: Martin
authors.initials: M
authors.lastname: Holmstrup
authors.forename: Kristine
authors.initials: K
authors.lastname: Maraldo
authors.forename: Paul Henning
authors.initials: PH
authors.lastname: Krogh
mesh_terms: D000053:Acari / Q000502:physiology; D000818:Animals; D001181:Arthropods / Q000502:physiology*; D044822:Biodiversity; D003300:Copper / Q000633:toxicity*; D004190:Disasters; D007313:Insecta / Q000502:physiology; D012621:Seasons; D012987:Soil / Q000032:analysis; D012989:Soil Pollutants / Q000633:toxicity*; D013696:Temperature; D014867:Water
chemical_list: D012987:Soil; D012989:Soil Pollutants; D014867:Water; D003300:Copper