Results 91 to 100 of about 75,207 (269)
The effect of spruce plantation density on resilience of mixed forests in the Perm Krai [PDF]
, 2019 Over the course of the last few decades, many countries across the globe have experienced mass desiccation of spruce plantations. The subject of our research was the spruce forests of the Russian Perm Krai's mixed forest zone.
Ivanchina, L. A., Zalesov, S. V.
core +1 more source
Picein and piceol concentrations in Norway spruce
Ecotoxicology and Environmental Safety, 1990 The concentrations of the glucoside picein and its aglucone piceol (4-hydroxy acetophenone) in the needles of Norway spruce (Picea abies (L.) Karsten) are considered indicators of plant stress. By use of two clones and a natural population of Norway spruce it was shown that the picein concentration was dependent on the site and the provenance of the ...
openaire +2 more sources
Integrative Zoology, EarlyView.We study that browsing by wapiti reduces the growth of saplings, and it develop chemical defenses to prevent themselves browsed again. These results reduce our concern about wapiti browse T. cuspidate saplings, and provide basic data for the study of the interaction between them, and also provide theoretical basis for the population restoration and ...
Jianan Feng +3 more
wiley +1 more source
Agricultural and Forest Entomology, EarlyView.We assess the effect of sanitation felling performed in 2022 in North‐Eastern Italy on bark beetle damage that occurred in 2023 across eight spruce forest types, as evaluated using multispectral satellite imagery. Bark beetle damage was reduced only at very high or very low sanitation felling rates.
Aurora Bozzini +5 more
wiley +1 more source
Flight activity of the ambrosia beetles Trypodendron laaeve and Trypodendron lineatum in relation to temperature in southern Sweden [PDF]
, 2011 The aim of this study was to investigate the flight activity and abundance of the ambrosia beetle, Trypodendron lineatum Olivier 1795 (Col., Scolytinae) in southern Sweden after storm-fellings in Jan 2005 (Gudrun) and Jan 2007 (Per), that blew down 75 ...
Lindelöw, Åke +2 more
core
Estimation of leaf area index and its sunlit portion from DSCOVR EPIC data: theoretical basis [PDF]
, 2017 This paper presents the theoretical basis of the algorithm designed for the generation of leaf area index and diurnal course of its sunlit portion from NASA's Earth Polychromatic Imaging Camera (EPIC) onboard NOAA's Deep Space Climate Observatory (DSCOVR)
Chen, Chi +10 more
core +1 more source
Automated Crossdating With a Modified Version of the Dendrochronology Program CROS
Archaeometry, EarlyView.ABSTRACT The basic principle of dendrochronology involves matching patterns of tree‐ring widths, with the objective of dating wood of unknown age. The various crossdating procedures rely on statistical methods. The legacy CROS program written in FORTRAN IV contains algorithms, variants of which have been incorporated into modern crossdating programs ...
Michael O. Schwartz
wiley +1 more source
Historia Naturalis BulgaricaSpruce needle drop disease of Norway spruce (Picea abies) associated with a fungal pathogen Setomelanomma holmii (Pleosporales, Phaeosphaeriaceae) was established for the first time in Bulgaria in 2023.
Maria Dobreva +5 more
doaj +1 more source
, 2018 Spatio-temporal modelling of tree defoliation data of German forest condition survey is presented. In the present study generalized additive mixed models were used to estimate the spatio-temporal trends of defoliation of the main tree species from 1989 ...
Augustin, Nicole H. +2 more
core +1 more source
Silva Fennica, 2011 The replacement of some spruce monocultures with stands composed of planted Norway spruce (Picea abies) and naturally regenerated birch (Betula spp.) has a range of potential benefits, but the implications for biodiversity are generally unknown.
Felton, Adam +3 more
doaj +1 more source