Results 51 to 60 of about 10,361 (219)

Classification of tree species and standing dead trees in Boreal forests using UAV‐based RGB, multispectral, and LiDAR point clouds

Remote Sensing in Ecology and Conservation, EarlyView.
We evaluated single‐ and multi‐sensor UAV approaches for classifying tree species and standing dead trees in boreal forests, focusing on key biodiversity indicators such as European aspen. Using spectral and structural features extracted from RGB, multispectral (MSP), and LiDAR point clouds for 1,205 field‐measured trees, we compared classification ...
Anton Kuzmin, Lauri Korhonen, Topi Tanhuanpää, Mikko Kukkonen, Matti Maltamo, Timo Kumpula   +5 more
wiley   +1 more source

САНИТАРНОЕ СОСТОЯНИЕ ХВОЙНЫХ НАСАЖДЕНИЙ, ПРОИЗРАСТАЮЩИХ НА ГОРНЫХ СКЛОНАХ ЯЛТИНСКОГО ГОРНО-ЛЕСНОГО ПРИРОДНОГО ЗАПОВЕДНИКА

Cifra: Биологические науки
В данной статье приведены данные о состоянии сосны крымской (Pinus nigra subsp. pallasiana (Lamb.) Holmboe) и сосны обыкновенной (Pinus sylvestris L.), произрастающей на территории Ялтинского горно-лесного заповедника.
Денисова Н.Б.
doaj   +1 more source

An improved phylogeny and revised taxonomy of Catillariaceae (Lecanoromycetes, Ascomycota)

TAXON, EarlyView.
Abstract The boundaries of the family Catillariaceae have largely remained untested through phylogenetic methods. Recent studies have led to the transfer of several genera previously classified in Catillariaceae to the newly described family Leprocaulaceae. Despite these changes, the distinction between Catillariaceae, Leprocaulaceae, and Catinariaceae
Måns Svensson, Stefan Ekman, Martin Westberg   +2 more
wiley   +1 more source

Genetic Analysis of Pinus sylvestris L. and Pinus sylvestris forma turfosa L. Using RAPD Markers

Notulae Scientia Biologicae, 2010
The purpose of the present study was to determine the level of genetic diversity within and among Ciuc basin, Romania (populations from Mohos and Luci raised bogs in Harghita Mountain and Sumuleu in Ciuc Mountain) Pinus sylvestris populations using ...
Beáta ÁBRAHÁM, Ildikó MIKLÓSSY, Erika KOVÁCS, Éva TAMÁS, Ildikó MÉSZÁROS, Szabolcs SZILVESZTER, Aurelia BREZEANU, Szabolcs LÁNYI   +7 more
doaj   +1 more source

Monitoring GPS‐collared moose by ground versus drone approaches: efficiency and disturbance effects

Wildlife Biology, EarlyView.
Efficient wildlife management requires precise monitoring methods, for example to estimate population density, reproductive success, and survival. Here, we compared the efficiency of drone (equipped with a RGB camera) and ground approaches to detect and observe GPS‐collared female moose Alces alces and their calves. We also quantified how drone (n = 42)
Martin Mayer, Erlend Furuhovde, Kristoffer Nordli, Giorgia Myriam Ausilio, Petter Wabakken, Ane Eriksen, Alina L. Evans, Karen Marie Mathisen, Barbara Zimmermann   +8 more
wiley   +1 more source

Le Pin de Bouget (Pinus x rhaetica Brügger), un taxon méconnu de Pin sauvage aux Pyrénées

Revue Forestière Française
Le Pin de Bouget, hybride naturel entre Pins à crochets et sylvestre (Pinus uncinata Ram., Pinus sylvestris L.), est décrit en 1933 aux Pyrénées. D’abord nommé Pinus Bougeti Flous par Gaussen (1960), il ne fait l’objet d’aucun diagnostic botanique ...
Renaud Cantegrel
doaj   +1 more source

Phytopathogenic fungi in forest nurseries of Middle Siberia

iForest - Biogeosciences and Forestry, 2020
The paper presents the results of phytopathogenic fungi determination in bare-root forest nurseries of Middle Siberia. Genetic analysis of pathogenic microflora of Pinus sylvestris L., Pinus sibirica Du Tour and Picea obovata Ledeb.
Sheller MA, Shilkina EA, Ibe AA, Razdorozhnaya TY, Sukhikh TV   +4 more
doaj   +1 more source

Benefit or ecological trap? Monitoring the effects of small clear‐cuts on capercaillie Tetrao urogallus and its mammalian predators

Wildlife Biology, EarlyView.
The shift to ‘close to nature forestry' as the dominating forestry regime in western‐European forests has resulted in increasing timber volume and denser forests with negative effects on photophilic species. Hence, there is an increasing focus on active habitat management measures to support these species.
Maria Kochs, Joy Coppes, Tanja Beutel, Gabriel Holz, Jim‐Lino Kämmerle, Michael Kraft, Veronika Braunisch   +6 more
wiley   +1 more source

Comparative evaluation of noninvasive DNA sampling and line transect surveys for spring density estimation of black grouse and capercaillie

Wildlife Biology, EarlyView.
Reliable abundance estimates provide essential information in ecology, conservation and management of many wild grouse populations. In this 3‐year study, we comparatively evaluate the suitability of traditional line transect distance sampling of flushed birds versus a spatial capture–recapture survey with noninvasive DNA samples for individual ...
Henrik Brøseth, Oddmund Kleven, Kjetil Bevanger   +2 more
wiley   +1 more source

Genetic variation of F1 hybrids from controlled crosses between Pinus montana var. rostrata and Pinus sylvestris in anatomical needle traits

Acta Societatis Botanicorum Poloniae, 2014
One hundred and seventeen individuals representing ten hybrid families from controlled crosses between Pinus montana var. rostrata and Pinus sylvestris were examined with respect to eight traits of anatomy of their two-year old needles.
Maria A. Bobowicz, Bruno R. Stephan, Wiesław Prus-Głowacki   +2 more
doaj   +1 more source