Claim · model-written summary
Periodic increases in individual species across all three regions were attributed to climatic causes.
- Outcome
- appearence of single speciese0
- Direction
- more frequente0
- Qualifier
- climatic naturee0
- Setting
- all three regionse0
PinusNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In all three regions, a more frequent appearence of single species occurred during certain periods, the cause obviously being of a climatic nature.”
e1“phytophageous pine caterpillars in South Germany since 1810”
Title
Vergleichende Studien über das Auftreten nadelfressender Kiefernraupen in Süddeutschland seit 18101
D. Klimetzek Zeitschrift für Angewandte Entomologie 1971. doi:10.1111/j.1439-0418.1971.tb03151.x
Other claims from this paper (13)
- Observation B. piniarius predominated in the Rheinpfalz.
- Observation L. monacha predominated in the Rheinpfalz.
- Observation P. flammea predominated in the Rheinpfalz.
- Association B. piniarius was less frequent in Schwetzingen, attributed to its more continental climate.
- Association L. monacha was less frequent in Schwetzingen, attributed to its more continental climate.
- Association P. flammea was less frequent in Schwetzingen, attributed to its more continental climate.
- Observation Dendrolimus pini caused most outbreaks in Schwetzingen together with Diprion pini.
- Observation Diprion pini caused most outbreaks in Schwetzingen together with Dendrolimus pini.
- Observation Outbreak frequency declined distinctly during 1931–1970 despite favourable conditions.
- Observation The summed infestation index was 248 in study area I.
- Observation The summed infestation index was 67 in study area II.
- Observation The summed infestation index was 183 in Schwetzingen.
- Mechanism The outbreak decline was hypothesized to be associated with broadleaf underplanting and new mixed stands since 1925.