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Post-harvest regeneration is driven by ecological factors rather than wood procurement intensity in eastern Canadian forests Forestry (IF 2.8) Pub Date : 2024-03-17 Claudie-Maude Canuel, Évelyne Thiffault, Nelson Thiffault
Biomass from surplus forest growth that is not harvested for wood supply of conventional industries can be an important source of feedstock for bioenergy. Its procurement can be integrated with little effort into current harvest operations. However, the increasing harvesting intensity to meet greater demand for biomass procurement can impact forest ecosystem functions because of its direct and indirect
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Tree belowground biomass in Congo Basin forests: allometric equations and scaling with aboveground biomass Forestry (IF 2.8) Pub Date : 2024-03-05 Alain Franck Kossi Ditsouga, Quentin Moundounga Mavouroulou, Cynel Gwenael Moundounga, Adeline Fayolle, Nicolas Picard, Akinobu Sato, Alfred Ngomanda
Many allometric models to predict tree aboveground biomass have been developed in tropical moist forests, but few models are available for tree belowground biomass. Theory predicts that belowground biomass scales in an isometric way with aboveground biomass. Estimates of belowground biomass could then be derived from aboveground biomass using the root:shoot ratio. Using a dataset of 118 tropical trees
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A bootstrap-based approach to combine individual-based forest growth models and remotely sensed data Forestry (IF 2.8) Pub Date : 2024-02-16 Mathieu Fortin, Olivier van Lier, Jean-François Côté, Heidi Erdle, Joanne White
Combining forest growth models with remotely sensed data is possible under a generalized hierarchical model-based (GHMB) inferential framework. This implies the existence of two submodels: the growth model itself ($\mathcal{M}_{1}$) and a second submodel that links the growth predictions to some remotely sensed variables ($\mathcal{M}_{2}$). Analytical GHMB estimators are available to fit submodel
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Height increment patterns in Pinus pinaster seedlings emerging in naturally regenerated gaps Forestry (IF 2.8) Pub Date : 2024-01-31 Sergio de Frutos, Rubén Manso, Sonia Roig-Gómez, Ricardo Ruiz-Peinado, Miren del Río, José Alfredo Bravo-Fernández
The group selection cutting system provides a promising technique for transforming monospecific even-aged stands into uneven-aged, mixed stands. However, this system has scarcely been used to regenerate Mediterranean shade-intolerant species. In this study, we analyze the height increment patterns of Pinus pinaster seedlings emerging in naturally regenerated gaps. P. pinaster is a shade-intolerant
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Comparing the effects of ground cultivation and protection against browsing upon the natural regeneration of Scots pine and birch in a Caledonian pinewood Forestry (IF 2.8) Pub Date : 2024-01-29 W L Mason, S Rao, J Agnew, V Stokes, A Painting, T-K Clarke, C Edwards
The Caledonian pinewoods of northern Scotland represent the remnants of once extensive forests found at the western edge of the natural range of Scots pine (Pinus sylvestris L.). The surviving pinewoods are of international significance and are of high conservation and cultural value. However, for many decades, there has been concern about their long-term future because of a lack of regenerating seedlings
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Modeling basal area yield using simultaneous equation systems incorporating uncertainty estimators Forestry (IF 2.8) Pub Date : 2024-01-25 Simón Sandoval, Cristián R Montes, Bronson P Bullock
Over the last three decades, many growth and yield systems developed for the southeast USA have incorporated methods to create a compatible basal area (BA) prediction and projection equation. This technique allows practitioners to calibrate BA models using both measurements at a given arbitrary age, as well as the increment in BA when time series panel data are available. As a result, model parameters
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More water, less light: how to improve silver fir seeding to convert Norway spruce monocultures into mixed stands in a drier region of Germany Forestry (IF 2.8) Pub Date : 2024-01-20 Christian Schattenberg, Ana Stritih, Dominik Thom
Adaptive forest management gains importance as climate and disturbance regimes continue to change. Norway spruce monocultures are particularly vulnerable to those changes. Thus, there is a strong demand to convert pure spruce stands toward better adapted forest ecosystems. Silver fir has similar wood properties as Norway spruce, but is less vulnerable to droughts. Yet, little is known how to efficiently
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When economically optimal is ecologically complicated: modeling tree-by-tree cutting decisions to maximize financial returns from northern hardwood stands Forestry (IF 2.8) Pub Date : 2024-01-17 John D Foppert, Neal F Maker
This study challenges a long-standing and often uncontested assertion in the forestry discourse that maximizing financial returns always requires ecologically simplified stands. We developed a high-resolution simulation tool for northern hardwood stands in eastern North America and integrated advanced numerical optimization methods to model the tree-level harvest decisions that maximize financial returns
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Modeling a new taper curve and form factor of tree branches using terrestrial laser scanning Forestry (IF 2.8) Pub Date : 2024-01-11 Muluken N Bazezew, Lutz Fehrmann, Christoph Kleinn, Nils Nölke
Modeling branch taper curve and form factor contributes to increasing the efficiency of tree crown reconstructions: the branch taper, defined as the sequential measure of diameters along the course of the branch, is pivotal to accurately estimate key branch variables such as biomass and volume. Branch diameters or volumes have commonly been estimated from terrestrial laser scanning (TLS) based on automatized
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Assessing the potential of synthetic and ex situ airborne laser scanning and ground plot data to train forest biomass models Forestry (IF 2.8) Pub Date : 2023-12-05 Jannika Schäfer, Lukas Winiwarter, Hannah Weiser, Jan Novotný, Bernhard Höfle, Sebastian Schmidtlein, Hans Henniger, Grzegorz Krok, Krzysztof Stereńczak, Fabian Ewald Fassnacht
Airborne laser scanning data are increasingly used to predict forest biomass over large areas. Biomass information cannot be derived directly from airborne laser scanning data; therefore, field measurements of forest plots are required to build regression models. We tested whether simulated laser scanning data of virtual forest plots could be used to train biomass models and thereby reduce the amount
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A method for identifying and segmenting branches of Scots pine (Pinus sylvestris L.) trees using terrestrial laser scanning Forestry (IF 2.8) Pub Date : 2023-12-05 Tuomas Yrttimaa, Ville Kankare, Ville Luoma, Samuli Junttila, Ninni Saarinen, Kim Calders, Markus Holopainen, Juha Hyyppä, Mikko Vastaranta
Terrestrial laser scanning (TLS) has been adopted as a feasible technique to characterize tree stems while the characterization of trees’ branching architecture has remained less explored. In general, branching architecture refers to the spatial arrangement of branches and their characteristics that are important when exploring the eco-physiological functioning of trees or assessing tree biomass and
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Growth and quality of 16-year-old sessile oak (Quercus petraea (Matt.) Liebl.) planted in traditional and alternative row planting patterns Forestry (IF 2.8) Pub Date : 2023-11-27 Tadeusz Andrzejczyk, Mateusz Liziniewicz, Leszek Bolibok
Traditional oak silviculture is costly due to high initial planting density required to obtain management goals of producing high quality timber. New methods therefore reduce the initial planting density and use a planting pattern that allows the inclusion of naturally regenerated trees of other species. The study presents the results of a 13-year experiment on the growth and quality of sessile oak
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×Sorbaronia ′Mitschurinii′—an overlooked alien shrub rapidly expands in temperate Scots pine forests Forestry (IF 2.8) Pub Date : 2023-11-24 Andrzej M Jagodziński, Paweł Horodecki, Anna K Jasińska, Tomasz Maliński, Zenon Pilarek, Kacper Woźniak, Dorota Wrońska-Pilarek, Jerzy Zieliński, Marcin K Dyderski
Biological invasions are one of the most important threats to biodiversity. However, spread mechanisms have been described in detail only for some widespread taxa. Here, we aim to characterize the unique phenomenon of ×Sorbaronia ′Mitschurinii′ (Rosaceae) spread into temperate Scots pine forests. We assessed the surroundings of an abandoned ×Sorbaronia ′Mitschurinii′ plantation, established in 1986
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The effects of arginine phosphate (ArGrow® Granulat) on growth of Scots pine and Norway spruce seedlings planted in varying soil layer structures simulating site preparation Forestry (IF 2.8) Pub Date : 2023-11-24 Jaana Luoranen, Timo Saksa
The pressure to plant seedlings in unprepared instead of prepared soil in forest regeneration is increasing, although seedlings’ growth in unprepared soil is poorer. One way to improve seedlings’ growth could be to add arginine phosphate to the planting hole at the time of planting. In field studies, abiotic and biotic damage normally disturbs studies which seek to determine growth effects, especially
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A horizon scan of issues affecting UK forest management within 50 years Forestry (IF 2.8) Pub Date : 2023-11-10 Eleanor R Tew, Bianca Ambrose-Oji, Malcolm Beatty, Ulf Büntgen, Holly Butterworth, Gerard Clover, Dan Cook, Dainis Dauksta, William Day, John Deakin, Alison Field, Barry Gardiner, Paddy Harrop, John R Healey, Rebecca Heaton, Gabriel Hemery, Louise Hill, Oliver Hughes, P K Khaira-Creswell, Keith Kirby, Andy Leitch, John MacKay, Rebecca McIlhiney, Brian Murphy, Lee Newton, Darren Norris, Richard Nugee
Forests are in the spotlight: they are expected to play a pivotal role in our response to society’s greatest challenges, such as the climate and biodiversity crises. Yet, the forests themselves, and the sector that manages them, face a range of interrelated threats and opportunities. Many of these are well understood, even if the solutions remain elusive. However, there are also emerging trends that
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Drought-related mortality modifies mixing effects on light absorption and growth in mono-specific and mixed stands of Fagus sylvatica, Alnus glutinosa, and Betula pendula Forestry (IF 2.8) Pub Date : 2023-10-24 Benjamin N E Plaga, Jürgen Bauhus, Andrew R Smith, Mário G Pereira, David I Forrester
Little is known about how drought-related mortality influences light absorption of surviving trees and consequent changes in tree species interactions. Here, we used the detailed tree-level light model (Maestra) in combination with measurements of tree dimensions, crown architectures, and stand structures to examine experimental mixing effects of Fagus sylvatica, Alnus glutinosa, and Betula pendula
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Tropical montane forest (Shola) tree species can regenerate under abandoned exotic tree plantations in the Western Ghats of India Forestry (IF 2.8) Pub Date : 2023-10-23 Joachim Schmerbeck, Somidh Saha, Anjana Srimathi, Birgit Einhellinger, Mamang Hangsing
Whether environmental conditions under exotic tree plantations abandoned in the Western Ghats of India can facilitate the natural regeneration of tropical montane forest (Shola forest) tree species is being debated. In many cases, the exotic tree plantations are being cleared to allow for the restoration of native ecosystems. In this paper, we examined whether exotic tree plantations have indeed a
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Forest canopy mortality during the 2018-2020 summer drought years in Central Europe: The application of a deep learning approach on aerial images across Luxembourg Forestry (IF 2.8) Pub Date : 2023-10-12 Selina Schwarz, Christian Werner, Fabian Ewald Fassnacht, Nadine K Ruehr
Efficient monitoring of tree canopy mortality requires data that cover large areas and capture changes over time while being precise enough to detect changes at the canopy level. In the development of automated approaches, aerial images represent an under-exploited scale between high-resolution drone images and satellite data. Our aim herein was to use a deep learning model to automatically detect
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Modeling the initial development dynamics for two native Brazilian forest tree species Forestry (IF 2.8) Pub Date : 2023-08-29 Flávia Fernanda Azevedo Fagundes, Fabrina Bolzan Martins, Fernando Yuri da Silva Reis, Haroldo Felipe da Costa
Development models are used to quantify the dynamics and rate of initial development, the seedling phase duration, and global warming impacts on forest species. Such models relate the physiological age of the plant, through air temperature functions, to its morphological appearance, given by the cumulative leaf number on the main stem. Despite their potential, studies on initial development dynamics
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Timber yield of commercial tree species in the eastern Brazilian Amazon based on 33 years of inventory data Forestry (IF 2.8) Pub Date : 2023-08-18 Jorge Luis Reategui-Betancourt, Lucas José Mazzei de Freitas, Kenia Ribeiro Brito Santos, Guido Briceño, Eraldo Aparecido Trondoli Matricardi, Ademir Roberto Ruschel, Natália Cássia de Faria Ferreira
Selective logging in neotropical forests has directly affected the dynamics of tree species, compromising species conservation and timber yield. Sustainable use of logged forests requires new tree recruitment and diameter growth in remaining trees to compensate for trees removed between cutting cycles. This long-term study investigated timber yields in four species groups with differing values (lower
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Sentinel-2 time series: a promising tool in monitoring temperate species spring phenology Forestry (IF 2.8) Pub Date : 2023-08-12 Ewa Grabska-Szwagrzyk, Luiza Tymińska-Czabańska
The changes in vegetation phenology observed in recent decades may have significant implications for carbon, water, and energy fluxes as well as ecosystem productivity. Phenology is an important indicator of a changing environment, and studying species-specific phenology can help understand their responses to varying climate conditions. While satellite-based phenology provides long-term information
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First report of the wattle rust pathogen, Uromycladium acaciae (Raveneliaceae, Pucciniales) in Ethiopia Forestry (IF 2.8) Pub Date : 2023-08-10 Nam Q Pham, Michael J Wingfield, Seonju Marincowitz, Agena A Tanga, Kumela R Tiki, Weldesenbet B Kassie, Brett P Hurley, Ilaria Germishuizen, Simon A Lawson, Madaline A Healey, Mesfin Wondafrash
Australian Acacia species are among the most important trees planted for wood and pulp production in several African countries, including Ethiopia. In 2020, symptoms of a serious shoot and leaf rust disease were observed on black wattle (Acacia mearnsii De Wild.) trees across the three main wattle growing regions of Ethiopia. The aim of this study was to describe the disease and identify its causal
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Are high-severity burns in Alpine beech forests related to eruptive fire behavior? Forestry (IF 2.8) Pub Date : 2023-07-18 Marco Conedera, Gianni Boris Pezzatti, Andrea Guglielmetti, Janet Maringer, Eric Gehring, Patrik Krebs
In the complex Alpine topography, canyon-like terrain morphology combined with steep slopes may cause sudden changes in fire behavior, for instance, turning fast-spreading surface fires into eruptive fires. This phenomenon was observed during the vegetation dormancy in mountain beech (Fagus sylvatica L.) stands, a forest type usually spared from wildfires. The aim of this study is to understand the
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Impacts of human forest management on seed dispersal patterns by scatter-hoarding rodents Forestry (IF 2.8) Pub Date : 2023-07-14 Eva K Nóbrega, Roger Vidal-Cardos, Alberto Muñoz, Mariona Ferrandiz-Rovira
Scatter-hoarding rodents play a central role in seed dispersal, predating and dispersing seeds that affect many plant species’ population dynamics and influence forest regeneration. Anthropogenic changes in forest structure, such as clear-cutting in dense forests, may alter the ecological interactions between seeds and dispersers. This study compared predation and dispersal patterns of holm oak (Quercus
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Tree-related microhabitat diversity as a proxy for the conservation of beetle communities in managed forests of Fagus sylvatica Forestry (IF 2.8) Pub Date : 2023-07-14 Pierdomenico Spina, Francesco Parisi, Serena Antonucci, Vittorio Garfì, Marco Marchetti, Giovanni Santopuoli
Integrating the conservation of biodiversity into silvicultural practices is one of the main challenges facing forest owners in the promotion of an emergent approach to sustainable forest management across European forests. The Mediterranean forests are among the richest biodiverse forest ecosystems due to their environmental heterogeneity, but climate change is threatening their integrity, with critical
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Xylem function and leaf physiology in European beech saplings during and after moderate and severe drought stress Forestry (IF 2.8) Pub Date : 2023-06-27 Martina Hájíčková, Roman Plichta, Daniel Volařík, Josef Urban, Marie Matoušková, Roman Gebauer
The extreme drought events in the last years caused high mortality amongst European beech (Fagus sylvatica L.) across Central Europe. Thus, knowledge of the response of beech to drought and its ability to recover its xylem and leaf functions after drought release is needed to better understand beech survival. In this study, changes in xylem function, leaf gas exchange, chlorophyll fluorescence and
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Partial cutting favours northern white-cedar regeneration but does not ensure recruitment to canopy: does browsing matter? Forestry (IF 2.8) Pub Date : 2023-06-21 Olivier Villemaire-Côté, Jean-Pierre Tremblay, Laura S Kenefic, Jean-Claude Ruel
Gap dynamics facilitate recruitment of late-successional species such as northern white-cedar (Thuja occidentalis L.). For this reason, harvests that result in partial rather than complete canopy removal have been suggested for cedar. However, success of regenerating cedar following partial harvests is uncertain, especially where there is heavy browsing by white-tailed deer (Odocoileus virginianus
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Eucalyptus scab and shoot malformation: a new disease in South Africa caused by a novel species, Elsinoe masingae Forestry (IF 2.8) Pub Date : 2023-06-21 Jolanda Roux, Michael J Wingfield, Seonju Marincowitz, Myriam Solís, Siphephelo Phungula, Nam Q Pham
A serious new disease of Eucalyptus was detected in South African plantations of these trees during the summer of 2021/2022. The first symptoms are minute dark spots on young leaves, petioles and shoots, becoming scab-like as the spots age. On highly susceptible Eucalyptus genotypes, leaves and shoots can become malformed leading to a ‘feathering’ appearance in the tree canopies and in the case of
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The effect of climate on the occurrence and abundance of tree recruitment in the province of Quebec, Canada Forestry (IF 2.8) Pub Date : 2023-06-20 Mathieu Fortin, Hugues Power, Rosalinde Van Couwenberghe, Bianca N I Eskelson
Tree recruitment is affected by numerous biotic and abiotic factors, including climate. However, the relative importance of climate variables in empirical models of tree recruitment remains to be evaluated. We fitted models of tree recruitment to 26 species in the province of Quebec, Canada. For a better understanding of the recruitment process, we used a two-part model to distinguish recruitment occurrence
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Leaf litter combustion properties of Central European tree species Forestry (IF 2.8) Pub Date : 2023-05-29 Michael Ewald, Pia Labenski, Erik Westphal, Elke Metzsch-Zilligen, Michael Großhauser, Fabian Ewald Fassnacht
Temperate forests of Central Europe are exposed to increasing fire risk. However, little is known about combustion properties of leaf litter, which plays an important role in the spread of surface fires. We used cone calorimetry to compare combustion properties of leaf litter samples from seven common tree species of Central European forests by reconstructing a litter layer of original depth in sample
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Adapting 3-PG foliar variables to deciduous trees in response to water restriction: poplar short rotation plantations under Mediterranean conditions Forestry (IF 2.8) Pub Date : 2023-05-17 A Fuertes, N Oliveira, C Pérez-Cruzado, I Cañellas, H Sixto, R Rodríguez-Soalleiro
Poplar plantations growing in short rotation are a crucial biomass source of raw material for bioenergy and/or bioproducts, making an important contribution towards achieving a low-carbon bioeconomy. To optimize yield predictions of poplar plantations, this study aims to adapt the foliar variables of the process-based model 3-PG (Physiological Principles Predicting Growth) to a deciduous species like
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The impact of climate and management on recent mortality in Pinus pinaster resin-tapped forests of inland Spain Forestry (IF 2.8) Pub Date : 2023-05-15 Rafael Calama, César Martínez, Javier Gordo, Miren Del Río, María Menéndez-Miguélez, Marta Pardos
Recent forest decline and amplified mortality have been documented around the world, mainly triggered by the rising water stress associated with more frequent extreme weather events. However, other abiotic and biotic factors may predispose and contribute to these processes. Mediterranean forests are among the biomes considered highly vulnerable to drought-induced decline and mortality. Pinus pinaster
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Detecting and excluding disturbed forest areas improves site index determination using bitemporal airborne laser scanner data Forestry (IF 2.8) Pub Date : 2023-05-11 Maria Å Moan, Lennart Noordermeer, Joanne C White, Nicholas C Coops, Ole M Bollandsås
Bitemporal airborne laser scanning (ALS) data are increasingly being used in forest management inventories for the determination of site index (SI). SI determination using bitemporal ALS data requires undisturbed height growth of dominant trees. Therefore, areas with disturbed top height development are unsuitable for SI determination, and should be identified and omitted before modelling, predicting
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Remote sensing in forestry: current challenges, considerations and directions Forestry (IF 2.8) Pub Date : 2023-05-11 Fabian Ewald Fassnacht, Joanne C White, Michael A Wulder, Erik Næsset
Remote sensing has developed into an omnipresent technology in the scientific field of forestry and is also increasingly used in an operational fashion. However, the pace and level of uptake of remote sensing technologies into operational forest inventory and monitoring programs varies notably by geographic region. Herein, we highlight some key challenges that remote sensing research can address in
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Soil change and broadleaf tree growth 10 years after wood ash and brash co-application to a clearfelled lowland conifer site in Britain Forestry (IF 2.8) Pub Date : 2023-05-08 Rona M Pitman, Elena I Vanguelova, Suzanne Benham
Wood ash use, to raise pH and replace nutrients lost through forest harvesting, is well regulated in Scandinavia and Canada, but not yet in the UK. This experiment applied granulated wood ash from mixed tree thinnings to a lowland clay mineral soil at ~2.3 t ha−1 dose rate, after clearfell of western hemlock (Tsuga heterophylla (Raf.) Sarg.). With brash (~56 t ha−1 dry weight) as N resource, a 4 ×
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How much wood can we expect from European forests in the near future? Forestry (IF 2.8) Pub Date : 2023-05-02 Bas J W Lerink, Mart-Jan Schelhaas, Roland Schreiber, Peter Aurenhammer, Uwe Kies, Morgan Vuillermoz, Philippe Ruch, Cyrille Pupin, Andrew Kitching, Gary Kerr, Louise Sing, Amanda Calvert, Áine Ní Dhubháin, Maarten Nieuwenhuis, Jordi Vayreda, Patrick Reumerman, Göran Gustavsonn, Rikard Jakobsson, Daragh Little, Alain Thivolle-Cazat, Christophe Orazio, Gert-Jan Nabuurs
The demand for wood in Europe is expected to increase in the coming decades. However, any theoretical maximum supply will be affected by sustainability constraints, the motivations of forest owners and regional factors, such as incentives, species and assortments. However, the influence of these factors on supply is changeable. In this study, we quantify what might be realistically available as additional
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Updating forest road networks using single photon LiDAR in northern Forest environments Forestry (IF 2.8) Pub Date : 2023-04-29 Ilythia D Morley, Nicholas C Coops, Jean-Romain Roussel, Alexis Achim, Jeff Dech, Dawson Meecham, Grant McCartney, Douglas E B Reid, Scott McPherson, Lauren Quist, Chris McDonell
Knowledge about the condition and location of forest roads is important for forest management. Coupling accurate forest road information with planning and conservation strategies supports forest resource management. In Canada, spatial data of forestry road networks are available provincially; however, they lack spatial accuracy, and up-to-date information on key attributes such as road width is missing
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Successful colonization of novel spruce hosts by European and North American spruce bark beetles can favour trans-Atlantic range expansion Forestry (IF 2.8) Pub Date : 2023-04-28 Rylee Isitt, Bjørn Økland, Paal Krokene, Jon Sweeney, Stephen B Heard, Deepa S Pureswaran
The European spruce bark beetle Ips typographus and the North American spruce beetle Dendroctonus rufipennis cause high mortality of spruces on their native continents. Both species have been inadvertently transported beyond their native ranges. With similar climates and the presence of congeneric spruce hosts in Europe and North America, there is a risk that one or both bark beetle species become
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Long-term study into the development of a plenter structure in a forest comprising a mix of European and north American species Forestry (IF 2.8) Pub Date : 2023-04-28 Andrew Cameron, Ruth Alexander
Irregular or plenter forestry evolved in Central Europe around a small number of shade-tolerating species; however, increasing interest in developing more climatically resilient, diverse forest structures has seen a greater range of species being studied. A critical question is whether stands comprising a wide geographic mix of species can form irregular structures in the long term. Using data from
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Evaluating semi- and nonparametric regression algorithms in quantifying stem taper and volume with alternative test data selection strategies Forestry (IF 2.8) Pub Date : 2023-04-28 Sheng-I Yang, Harold E Burkhart, Mehmet Seki
Accurately quantifying stem taper is essential to predict diameter at any given height along the stem and to estimate tree volume for various sections of the stem. With increased computing power, semi- and nonparamatric methods have been proposed as alternative approaches for modelling tree taper. The main objective of this study was to assess the accuracy of stem taper predicted for four pine and
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Canopy and surface fuel estimations using RPAS and ground-based point clouds Forestry (IF 2.8) Pub Date : 2023-04-28 Jeremy Arkin, Nicholas C Coops, Lori D Daniels, Andrew Plowright
Forest management activities intended to reduce wildfire risk rely on accurate characterizations of the amount and arrangement of canopy and surface fuels. Metrics that describe these fuels are typically estimated with various systems that transform plot-level field data into metrics that can be used within fire behaviour models. Remote sensing data have long been used to estimate these metrics across
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Ecological factors related to seed germination and early seedling establishment in Ulmus minor Mill., an endangered riparian tree species Forestry (IF 2.8) Pub Date : 2023-04-23 Juan Carlos López-Almansa
Natural populations of Ulmus minor Mill., an outstanding component of European riparian forests, are endangered due to Dutch elm disease, which has led to the development of several breeding programs throughout Europe. However, the reproductive ecology of this species is scarcely known even though sexual regeneration is an essential factor that must be understood before implementing elm stand restoration
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Methods for identifying and measuring the diversity of ectomycorrhizal fungi Forestry (IF 2.8) Pub Date : 2023-04-21 Daniel Janowski, Tomasz Leski
Mycorrhiza is a mutualistic symbiosis between some plant species and a diverse group of soil fungi. Mycorrhizal symbiosis is categorized into discrete types based on the structural differences and the taxonomic position of involved plants and fungi. The main types of mycorrhiza include arbuscular, ericoid, orchid, monotropoid and ectomycorrhiza, the latter being the main focus of this review. Identifying
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Generating synthetic laser scanning data of forests by combining forest inventory information, a tree point cloud database and an open-source laser scanning simulator Forestry (IF 2.8) Pub Date : 2023-04-17 Jannika Schäfer, Hannah Weiser, Lukas Winiwarter, Bernhard Höfle, Sebastian Schmidtlein, Fabian Ewald Fassnacht
Airborne laser scanning (ALS) data are routinely used to estimate and map structure-related forest inventory variables. The further development, refinement and evaluation of methods to derive forest inventory variables from ALS data require extensive datasets of forest stand information on an individual tree-level and corresponding ALS data. A cost-efficient method to obtain such datasets is the combination
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Assessing the potential of mobile laser scanning for stand-level forest inventories in near-natural forests Forestry (IF 2.8) Pub Date : 2023-04-13 Can Vatandaşlar, Mehmet Seki, Mustafa Zeybek
Recent advances in LiDAR sensors and robotic technologies have raised the question of whether handheld mobile laser scanning (HMLS) systems can allow for the performing of forest inventories (FIs) without the use of conventional ground measurement (CGM) techniques. However, the reliability of such an approach for forest planning applications, particularly in non-uniform forests under mountainous conditions
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Environmental drivers of the current and future distribution of high-yielding lacquer trees (Toxicodendron vernicifluum (stokes) F. A. Barkley) Forestry (IF 2.8) Pub Date : 2023-04-13 Shuqiao Zhang, Zizhi Wang, Shengxi Liao
Lacquer trees (Toxicodendron vernicifluum (Stokes) F.A. Barkley) are an important natural resource with significant economic and cultural value in East Asia. The main product, raw lacquer, is in high demand due to its commercially valuable characteristics. This study analyzed environmental drivers of the current and future distribution of lacquer trees in high-yielding locations using a machine-learning
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Comparing mobile and terrestrial laser scanning for measuring and modelling tree stem taper Forestry (IF 2.8) Pub Date : 2023-04-11 Atticus E L Stovall, David W MacFarlane, Debbie Crawford, Tom Jovanovic, Jereme Frank, Cris Brack
Measuring and modelling the shape of tree stems is a fundamental component of forest inventory systems for both commercial and biological purposes. The change in diameter of the stem along its length (a.k.a. 'taper') is one of the most important and widely used means of predicting tree stem volume. Until recently, the options for obtaining accurate estimates of stem taper and developing stem taper
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Resilience and successional trends of woody vegetation in seasonally dry tropical forests Forestry (IF 2.8) Pub Date : 2023-03-29 Clemir Candeia de Oliveira, Fernando Roberto Martins, Bruno Cruz Souza, Everardo Valadares de Sa Barretto Sampaio, Maria Iracema Bezerra Loiola, Arlete Aparecida Soares
Understanding the recovery time of vegetation structure and species composition to estimate the resilience of seasonally deciduous tropical forest (SDTF) is fundamental for conservation actions. Related information is still scarce for the semi-arid Brazilian SDTF (locally called Caatinga), which covers more than 800 000 km2 in the northeast of Brazil. We aimed to estimate how long it takes for 11 attributes
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Natural disturbances as drivers of tipping points in forest ecosystems under climate change – implications for adaptive management Forestry (IF 2.8) Pub Date : 2023-03-16 Dominik Thom
As climate continues to change, disturbances may increasingly navigate forest ecosystems towards tipping points, causing irreversible state shifts and a loss of biodiversity and ecosystem services. In this review, I elaborate the Special Issue topic ‘Natural disturbances as tipping points of forest ecosystems under climate change’ featured by Forestry and suggest a suit of adaptive measures to mitigate
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Effects of Norway spruce shelter density and soil scarification method on mortality and height growth of underplanted European beech, European silver fir and Douglas fir Forestry (IF 2.8) Pub Date : 2023-03-11 D O J Reventlow, T Nord-Larsen, H Sørensen, J P Skovsgaard
In Europe, 6–7 million ha even-aged, pure stands of Norway spruce grown outside its natural range are prone to butt rot, windthrow, and bark beetle infestation. Climate change may well accelerate these problems and there is an urgent need to develop methods for converting Norway spruce plantations into more heterogeneous forest with larger resistance and resilience towards natural disturbances. Based
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Pruning revisited – effect of pruning season on wood discoloration and occlusion in four temperate broadleaved tree species Forestry (IF 2.8) Pub Date : 2023-03-07 Anna Lund, Anna Levinsson, Johan Östberg, Björn Wiström
Pruning is a necessary part of tree management both in silvicultural systems and in urban forestry. For the wood industry’s production of high-quality timber, as well as for the urban forest’s risk reduction and ecosystem services enhancements, it is essential that the pruning is accurately implemented. This study aimed to determine the effect of pruning season on discoloration amount and occlusion
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Use of virtual reality technology in chainsaw operations, education and training Forestry (IF 2.8) Pub Date : 2023-02-25 Irene Capecchi, Francesco Neri, Tommaso Borghini, Iacopo Bernetti
Wood harvesting operations represent one of the industrial sectors with the highest risk of accidents at work. In semi-mechanized logging operations, the great majority of accidents generally occur using chainsaws during tree felling. Unfortunately, these situations frequently cause serious injuries and even the deaths of workers. In numerous cases, the accidents occurred to people who were badly trained
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Determination of ring-level dynamic modulus of elasticity in loblolly pine from measurements of ultrasonic velocity and specific gravity Forestry (IF 2.8) Pub Date : 2023-02-21 Joseph Dahlen, David Auty, Thomas L Eberhardt, Laurence Schimleck, Nawa Raj Pokhrel
Wood stiffness (modulus of elasticity, MOE) is an important property for conifer wood, with the variability in MOE largely being a function of both the specific gravity (SG) (wood density) and the angle of the microfibrils within the S2 layer of longitudinal tracheids. Rapid analysis techniques can be used together to quantify MOE; while SG can be determined with relative ease, this is not the case
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sgsR: a structurally guided sampling toolbox for LiDAR-based forest inventories Forestry (IF 2.8) Pub Date : 2023-02-08 Tristan R H Goodbody, Nicholas C Coops, Martin Queinnec, Joanne C White, Piotr Tompalski, Andrew T Hudak, David Auty, Ruben Valbuena, Antoine LeBoeuf, Ian Sinclair, Grant McCartney, Jean-Francois Prieur, Murray E Woods
Establishing field inventories can be labor intensive, logistically challenging and expensive. Optimizing a sample to derive accurate forest attribute predictions is a key management-level inventory objective. Traditional sampling designs involving pre-defined, interpreted strata could result in poor selection of within-strata sampling intensities, leading to inaccurate estimates of forest structural
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Short-term physicochemical and biological impacts on soil after forest logging in Mediterranean broadleaf forests: 15 years of field studies summarized by a data synthesis under the meta-analytic framework Forestry (IF 2.8) Pub Date : 2023-02-01 Francesco Latterini, Rachele Venanzi, Rodolfo Picchio, Andrzej M Jagodziński
Sustainable Forest Management (SFM) is a key objective of the European Forest Strategy. One of the most important aspects to be considered to achieve this fundamental goal is the implementation of Sustainable Forest Operations (SFOs). This study aims to investigate how and to what extent forest logging and silvicultural treatments affect soil physicochemical properties in the context of Mediterranean
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Aboveground responses to belowground root damage detected by non-destructive sensing metrics in three tree species Forestry (IF 2.8) Pub Date : 2023-02-01 Matan Azar, Gabriel Mulero, Yaara Oppenheimer-Shaanan, David Helman, Tamir Klein
Root systems form a significant part of tree biomass and function. Yet, roots are hidden from our eyes, making it difficult to track the belowground processes. By contrast, our capacity to detect aboveground changes in trees has been continuously improving using optical methods. Here, we tested two fundamental questions: (1) To what extent can we detect aboveground responses to mechanical damage of
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Response to extreme events: do morphological differences affect the ability of beech (Fagus sylvatica L.) to resist drought stress? Forestry (IF 2.8) Pub Date : 2023-02-01 Thomas Mathes, Dominik Seidel, Peter Annighöfer
Adaptive silvicultural approaches intend to develop forests that can cope with changing climatic conditions. Just recently, many parts of Germany experienced 3 years of summer drought in a row (2018–2020). This study analysed the effects of this event on beech (Fagus sylvatica L.) in two regions in northern Bavaria, Germany. For this purpose, 990 beech trees were studied on 240 plots in drought-stressed
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First report of canker caused by Chrysoporthe austroafricana on the plantation-grown eucalypt Corymbia henryi in South Africa Forestry (IF 2.8) Pub Date : 2023-02-01 Hiroyuki Suzuki, Seonju Marincowitz, Jolanda Roux, Brenda D Wingfield, Michael J Wingfield
Species of Corymbia are increasingly being tested for plantation establishment in South Africa. During disease surveys in KwaZulu-Natal plantations in 2020, a serious canker disease was found on Corymbia henryi. The cankers were seemingly caused by a fungus belonging to the family Cryphonectriaceae. The aims of the study were to identify the fungus causing the disease, to test its pathogenicity and
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Effects of thinning intensity and rotation length on albedo- and carbon stock-based radiative forcing in boreal Norway spruce stands Forestry (IF 2.8) Pub Date : 2023-01-30 Seppo Kellomäki, Harri Strandman, Sara Kirsikka-Aho, Miko U F Kirschbaum, Heli Peltola
We investigated how thinning intensity and rotation length affect radiative forcing, and thus climate warming or cooling, through changes in albedo and carbon stocks in Norway spruce (Picea abies Kart. (L.)) stands. Forest ecosystem model simulations were conducted under the current climate on sub-mesic sites in central Finland (62oN). Even-aged management regime with a business-as-usual (baseline)
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Methane and nitrous oxide fluxes from clonal eucalyptus forests in different spacing arrangements Forestry (IF 2.8) Pub Date : 2023-01-25 Gleice Gomes Rodrigues, Josileia Acordi Zanatta, Marcos Fernando Glück Rachwal, Rosana Clara Victoria Higa, Osmir Lavoranti, Luciana Duque Silva
Although Eucalyptus is the most commonly cultivated genus in Brazil, more information is needed on how these forests can act as a sink for greenhouse gases. This study assessed the potential greenhouse gas (GHG) mitigation of eucalyptus forests by quantifying both the seasonal rates of exchange of methane (CH4) and nitrous oxide (N2O) gases at the soil–atmosphere interface and their relationships with