Tree ring width and wood density as the indicators of climatic factors and insect outbreaks affecting spruce growth

Autor:	Philipp Duncker, Marcin Koprowski
Rok vydání:	2012
Předmět:	Ecology Insect outbreak fungi Dendrochronology General Decision Sciences Biosphere Picea abies Precipitation Physical geography Biology biology.organism_classification Ecology Evolution Behavior and Systematics
Zdroj:	Ecological Indicators. 23:332-337
ISSN:	1470-160X
DOI:	10.1016/j.ecolind.2012.04.007
Popis:	Tree ring width (TRW), maximum (MXD), mean (MED) and minimum (MID) wood density were investigated in samples from the vicinity of the Tuchola Forest Biosphere Reserve (Northern Poland) in an attempt to distinguish the relative importance of climate and insect attack on the growth of Norway spruce. Selected climate parameters were used for a multiple regression to predict tree-ring width during insect outbreaks. This also used AICc for model selection. Additionally, k-means clustering was then used to group the yearly data of TRW, MXD, MID and the data of insect outbreaks. The respective climate data and data on insect outbreaks during the years 1962–1996 revealed a strong influence of May precipitation on TRW and insect outbreaks on MID. Missing tree rings or narrow rings and lower MXD together with higher MID might indicate increased insect activity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::beed45dc4dc60e4a1de4df19ac0b5b36 https://doi.org/10.1016/j.ecolind.2012.04.007 Zobrazit plný text záznamu Full Text from ScienceDirect