Results 61 to 70 of about 71,861 (264)

INFLUENCE OF ROOTSTOCKS AND THE TIME OF GRAFTING PROCEDURE ON THE EFFICIENCY OF PROPAGATION BY GRAFTING TWO CULTIVARS OF MOUNTAIN PINE (Pinus mugo Turra) AND ESTIMATION OF CHLOROPLAST PIGMENTS LEVEL IN THE NEEDLES

Acta Scientiarum Polonorum: Hortorum Cultus, 2020
The experimental studies were conducted from 2015–2017 years in two cycles. The aim of the research was to determine a better grafting time and a choice of an appropriate rootstock for the propagation of two cultivars of mountain pine (Pinus mugo Turra).
Sławomir Świerczyński, Marcin Kolasiński, Aleksander Stachowiak, Magdalena Rybus-Zając   +3 more
doaj   +1 more source

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

Tree differences in primary and secondary growth drive convergent scaling in leaf area to sapwood area across Europe [PDF]

, 2018
open28siTrees scale leaf (AL) and xylem (AX) areas to couple leaf transpiration and carbon gain with xylem water transport. Some species are known to acclimate in AL : AX balance in response to climate conditions, but whether trees of different species ...

core   +1 more source

К проблеме синтаксономии сосновых лесов (Pinus sylvestris var. hamata) с участием бореальных флористических элементов в Дагестане (Северный Кавказ)

Turczaninowia, 2019
. С использованием метода Браун-Бланке проведена классификация уникального на территории Кавказской горной системы типа растительности – сосновых лесов из Pinus sylvestris var.
Николай Борисович Ермаков, Загидат Ибрагимовна Абдурахманова, Ирина Леонидовна Потапенко   +2 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

Investigation of 137Cs and 90Sr transfer from sandy soil to Scots pine (Pinus sylvestris L.) rings

Journal of Environmental Engineering and Landscape Management, 2010
Artificial radionuclides entered the environment mostly as a result of nuclear explosions, accidents at nuclear power plants and are entering due to the operation of the nuclear industry.
Ingrida Pliopaitė Bataitienė, Donatas Butkus   +1 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

Polymorphism and differentiation in populations of Pinus sylvestris in the Ukrainian Carpathians

Vìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Bìologìâ, Ekologìâ, 2011
The analysis and synthesis of the data on allozyme structure, polymorphism and degree of genogeographic differentiation of mountain populations of Scots pine isolated in the Ukrainian Carpathians showed considerable genetic variability of foothill and ...
S. N. Sannikov, I. V. Petrova, T. V. Filipрova, S. N. Sannikova, T. V. Parpan, E. V. Egorov   +5 more
doaj   +1 more source

A Pine Is a Pine and a Spruce Is a Spruce--The Effect of Tree Species and Stand Age on Epiphytic Lichen Communities. [PDF]

PLoS ONE, 2016
With an increasing demand for forest-based products, there is a growing interest in introducing fast-growing non-native tree species in forest management. Such introductions often have unknown consequences for native forest biodiversity.
Sofia Bäcklund, Mari Jönsson, Joachim Strengbom, Andreas Frisch, Göran Thor   +4 more
doaj   +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