Results 41 to 50 of about 75,675 (253)

Changes in the extent and structure of Norway spruce stands in the Ukrainian Carpathians based on forest survey data from 1988 to 2018

Central European Forestry Journal
This study investigates dynamics of Norway spruce stands in the Ukrainian Carpathians in 1988–2018. Cultivation of Norway spruce has altered forest composition at the expense of site-adapted species.
Lavnyy Vasyl, Khomiuk Petro, Gusti Mykola, Havryliuk Serhii, Korol Mykola, Matusevych Oleksandr, Savchyn Volodymyr, Vonderach Christian, Kahle Hans-Peter   +8 more
doaj   +1 more source

Recruitment dynamics in conifer-dominated uneven-aged forests in the carpathians

Forest Ecosystems
In permanently uneven-aged forests, continuous ingrowth of recruitment into higher stand layers is a critical process for the formation and maintenance of differentiated stand structures.
Jaroslav Vencurik, Michal Bosela, Ladislav Šumichrast, Anna Petrová, Peter Jaloviar, Denisa Sedmáková, Zuzana Parobeková, Ján Pittner, Ivan Repáč, Stanislav Kucbel   +9 more
doaj   +1 more source

Difference on cone size preferences between two coniferous species by Great Spotted Woodpecker (Dendrocopos major) [PDF]

PeerJ, 2017
The number of species that specialize in pre-dispersal seed predation is relatively small. Examples of specialized pre-dispersal seed predators adapted to feeding on closed cones include vertebrate species like Crossbills, Squirrels, Nutcrackers and ...
Łukasz Dylewski, Reuven Yosef, Łukasz Myczko   +2 more
doaj   +2 more sources

Wood and fibre properties of fertilized Norway spruce [PDF]

, 2003
Very intensive forest management is relatively unexplored in Sweden, and while there is interest in pursuing e.g. the use of fertilizers on selected areas, there is concern about the quality of the wood when growth rate increases.
Lundgren, Christina
core  

Genetic information from progeny trials: a comparison between progenies generated by open pollination and by controlled crosses [PDF]

, 2013
When conifer progenies generated by open pollination are assessed in field tests, it is usually assumed that all progenies of the same mother are true half-sibs.
Hallingbäck, Henrik, Jansson, Gunnar
core   +1 more source

Host tree preference and performance of the Eurasian spruce bark beetle (Ips typographus) on Scots pine

Pest Management Science, EarlyView.
Ips typographus showed lower reproductive output in an occasional host (Pinus sylvestris) under laboratory conditions, and did not prefer its main host (Picea abies) over P. sylvestris in two‐choice bioassays. Abstract BACKGROUND The Eurasian spruce bark beetle, Ips typographus, is one of the most serious pests of Norway spruce (NS, Picea abies), with ...
Jana Gabriele Burchards, Dineshkumar Kandasamy, Martin Nils Andersson   +2 more
wiley   +1 more source

Large‐scale characterization of horizontal forest structure from remote sensing optical images

Remote Sensing in Ecology and Conservation, EarlyView.
Sub‐meter resolution remote sensing data and tree crown segmentation techniques hold promise in offering detailed information that can support the characterization of forest structure from a horizontal perspective, offering new insights in the tree crown structure at scale.
Xin Xu, Martin Brandt, Xiaowei Tong, Maurice Mugabowindekwe, Yuemin Yue, Sizhuo Li, Qiue Xu, Siyu Liu, Florian Reiner, Kelin Wang, Zhengchao Chen, Yongqing Bai, Rasmus Fensholt   +12 more
wiley   +1 more source

Species selection in areas subjected to risk of root and butt rot: applying Precision forestry in Norway

Silva Fennica, 2022
Norway’s most common tree species, Picea abies (L.) Karst. (Norway spruce), is often infected with Heterobasidion parviporum Niemelä & Korhonen and Heterobasidion annosum (Fr.) Bref.. Because Pinus sylvestris L.
Ana Aza, A. Maarit I. Kallio, Timo Pukkala, Ari Hietala, Terje Gobakken, Rasmus Astrup   +5 more
doaj   +1 more source

Temporal and spatial variation of crown condition of main Norway spruce and oak species [PDF]

, 2003
The aim of this Internal Report is to analyse the spatial and temporal development of defoliation for Norway spruce (Picea abies) as well as for European and Sessile oak (Quercus robur and Q.
Mues, Volker
core  

Relationships between tree and soil properties in Picea abies and Pinus sylvestris forests in Sweden [PDF]

, 2010
The exchange of elements between plants and the soil in which they are growing creates reciprocal control of their element composition. Within plants, the growth rate hypothesis from ecological stoichiometry implies a strong coupling between C, N, and P.
Ladanai, Svetlana, Olsson, Bengt, Ågren, Göran   +2 more
core   +1 more source