Results 21 to 30 of about 986,532 (289)
Dead wood retention and the risk of bark beetle attack [PDF]
, 2002 Wind-felled Norway spruce trees left for conservation purposes and spruce stems stored as forest fuel may be colonised by the bark beetles Ips typographus and Pityogenes chalcographus (Coleoptera: Scolytidae).
Hedgren, Per Olof
core +1 more source
Forest Ecosystems, 2017 Background After their death, Scots pine trees can remain standing for decades and sometimes up to 200 years, forming long-lasting and ecologically important structures in boreal forest landscapes.
Timo Kuuluvainen +2 more
doaj +1 more source
Investigation on dead trees effects on natural regeneration of oriental beech and hornbeam in a mixed beech forest. [PDF]
تحقیقات جنگل و صنوبر ایران, 2007 The process of natural regeneration including establishment of seedling under dead and mother trees ensure sustainable productivity in the forests. Qualifying the impact of dead trees on the density of establishment seedling in closed and open canopy in ...
Kiomars Sefidi +3 more
doaj
CLASSIFICATION OF TREE SPECIES AND STANDING DEAD TREES BY FUSING UAV-BASED LIDAR DATA AND MULTISPECTRAL IMAGERY IN THE 3D DEEP NEURAL NETWORK POINTNET++ [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 Knowledge of tree species mapping and of dead wood in particular is fundamental to managing our forests. Although individual tree-based approaches using lidar can successfully distinguish between deciduous and coniferous trees, the classification of ...
S. Briechle, P. Krzystek, G. Vosselman
doaj +1 more source
Frontiers in Forests and Global Change, 2020 Pathogens are threatening crops worldwide, but little attention has been given to the threat to tree species in undisturbed rainforest. This communication reports the first case of a tree die off caused by a “wilt” in Madagascar. In 2016 while monitoring
Patricia Chapple Wright +8 more
doaj +1 more source
Global Ecology and Conservation, 2022 Although urban landscapes are regarded as unsuitable for dead wood dependent organisms, some species, including woodpeckers, commonly occur in cities. As the availability of trees and dead wood resources is a primary dimension of the habitat-niche for ...
Arkadiusz Fröhlich +2 more
doaj +1 more source
Preliminary study of manna oak (Quercus brantii Lindl.) tree decline in Dashte-Barm of Kazeroon, Fars province [PDF]
تحقیقات جنگل و صنوبر ایران, 2011 To investigate the effect of recent oak decline, which covers a relatively vast area of Fars province, the oak forests of Dashte-Barm which were most exposed to drying was selected as the primary site to study. Firstly, base maps were provided.
Mojtaba Hamzehpour +2 more
doaj +1 more source
Impact of dead trees on natural regeneration in forest stands (Chelir district, Kheiroudkenar, Nowshahr) [PDF]
تحقیقات جنگل و صنوبر ایران, 2007 The main objective of this study which was conducted in an intact stand of the experimental Kheiroudkenar forest (Chelir district), was to examine the ecological importance of dead trees followed by it’s impact on natural regeneration of the forest.
Eslam Zolfeghari +2 more
doaj
Journal of Forest Science, 2004 In four permanent experimental plots, dead wood was inventory under conditions of mountain forest ecosystems of the Kněhyně-Čertův mlýn National Nature Reserve, the Moravian-Silesian Beskids.
L. Jankovský, D. Lička, K. Ježek
doaj +1 more source
Anatomical and genetic aspects of ash dieback: a look at the wood structure
iForest - Biogeosciences and Forestry, 2017 Pathogen diseases are increasingly threatening forest trees under the current climate change, causing a remarkable decrease in the stability of forest ecosystems. Ash (Fraxinus excelsior L.) dieback due to Hymenoscyphus fraxineus has been noted in Poland
Tulik M +5 more
doaj +1 more source