Publication Date:
2021-03-29
Description:
In this paper we report on the herbivore-affected C and N concentrations in the throughfall and altered canopy to
soil transfer during a Pine Lappet (Dendrolimus pini L) mass infestation in 60-year-old Scots Pine (Pinus sylvestris L)
forests. Our investigations covered a period of 7 months and could show, that herbivore defoliation significantly altered
C and N concentrations in the throughfall solution and enhanced organic matter input situation to the forest floor.
Compared to the uninfested site mean concentrations of the throughfall solution at the infested site under strong frass
activity contained 80% more C and 61% more N. Additionally, C and N inputs were with 131 kg C ha-1 time-1 and 9.6 kg
N ha-1 time-1 higher under strong frass activity during 3 months compared to the input at the uninfested site.
We assume that outbreaks of phytophagous insects play an important key role in monoculture forest by influencing
the nutrient turnover.
Keywords:
Forest disturbances; Climate Change; Insect mass outbreaks
;
551
Language:
English
Type:
article
,
publishedVersion
Format:
6
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