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... Trunk injection is a targeted delivery of pesticides, insecticides, nutrients, or other plant protection materials into the stem or trunk of woody plants as an alternative to spraying or soil drenching. Trunk injection has historically been used for disease and pest management of high-value forest tree species or ornamental plants when aerial applications are problematic due to spatial problems an ...
foresttrees, etc ; discriminant analysis; model validation; models; photogrammetry; Show all 5 Subjects
Abstract:
... The objective of this study was to evaluate the effectiveness of three standardization approaches for airborne laser scanning (ALS) feature values used for individual tree species classification. This study is the first effort to assess the transferability of forest tree species classification models derived using monospectral and multispectral ALS data. Three research questions were asked; (1) Ho ...
Marina de Miguel; Isabel Rodríguez‐Quilón; Myriam Heuertz; Agathe Hurel; Delphine Grivet; Juan Pablo Jaramillo‐Correa; Giovanni G. Vendramin; Christophe Plomion; Juan Majada; Ricardo Alía; Andrew J. Eckert; Santiago C. González‐Martínez
foresttrees, etc ; Pinus pinaster; climate change; phenology; phenotypic variation; Show all 5 Subjects
Abstract:
... A decade of genetic association studies in multiple organisms suggests that most complex traits are polygenic; that is, they have a genetic architecture determined by numerous loci, each with small effect‐size. Thus, determining the degree of polygenicity and its variation across traits, environments and time is crucial to understand the genetic basis of phenotypic variation. We applied multilocus ...
foresttrees, etc ; forestry; forests; genotyping; intraspecific variation; phenology; phenotype; surveys; Show all 8 Subjects
Abstract:
... KEY MESSAGE: The lack of efficient phenotyping capacities has been recognized as a bottleneck in forestry phenotyping and breeding. Modern phenotyping technologies use systems equipped with various imaging sensors to automatically collect high volume phenotypic data that can be used to assess trees' various attributes. CONTEXT: Efficient phenotyping has the potential to spark a new Green Revolutio ...
foresttrees, etc ; climate change; geographical distribution; habitats; mountains; species richness; China; Show all 7 Subjects
Abstract:
... Climate change inevitably affects the geographical distribution of species on earth. Conifers, which are important components of forest tree species, are highly threatened and particularly sensitive to climate change. Approximately 23.6% (145/615 species) of the world’s conifers are native to China, among which 53 species are threatened. Thus, understanding the impact of climate change on the spec ...
foresttrees, etc ; Landsat; data collection; forest plantations; species diversity; time series analysis; China; Show all 7 Subjects
Abstract:
... Accurate mapping of tree species is highly desired in the management and research of plantation forests, whose ecosystem services are currently under threats. Time-series multispectral satellite images, e.g., from Landsat-8 (L8) and Sentinel-2 (S2), have been proven useful in mapping general forest types, yet we do not know quantitatively how their spectral features (e.g., red-edge) and temporal f ...
Alessandra De Marco; Pierre Sicard; Zhaozhong Feng; Evgenios Agathokleous; Rocio Alonso; Valda Araminiene; Algirdas Augustatis; Ovidiu Badea; James C. Beasley; Cristina Branquinho; Viktor J. Bruckman; Alessio Collalti; Rakefet David‐Schwartz; Marisa Domingos; Enzai Du; Hector Garcia Gomez; Shoji Hashimoto; Yasutomo Hoshika; Tamara Jakovljevic; Steven McNulty; Elina Oksanen; Yusef Omidi Khaniabadi; Anne‐Katrin Prescher; Costas J. Saitanis; Hiroyuki Sase; Andreas Schmitz; Gabriele Voigt; Makoto Watanabe; Michael D. Wood; Mikhail V. Kozlov; Elena Paoletti
foresttrees, etc ; air; air pollution; climate change; forests; functional diversity; genomics; phenomics; satellites; Show all 9 Subjects
Abstract:
... Although it is an integral part of global change, most of the research addressing the effects of climate change on forests have overlooked the role of environmental pollution. Similarly, most studies investigating the effects of air pollutants on forests have generally neglected the impacts of climate change. We review the current knowledge on combined air pollution and climate change effects on g ...
foresttrees, etc ; Populus; anorexia; antioxidants; bark; dioecy; flavonoids; liver; pain; rheumatoid arthritis; terpenoids; Show all 11 Subjects
Abstract:
... Genus Populus (Salicaceae family) consists of dioecious, deciduous, and commercially important forest tree species which are widely spread over the Northern Hemisphere. Traditionally, Populus species are used in the treatment of rheumatism, arthritis, lower back pains, urinary complaints, digestive, liver disorders, debility, anorexia, fevers, and also relieve the pain of menstrual cramps. This re ...
foresttrees, etc ; Eucalyptus globulus; allelic variation; genomics; hybridization; linkage disequilibrium; models; plant genetics; Tasmania; Show all 9 Subjects
Abstract:
... The evolutionary trajectory of a population both influences and is influenced by characteristics of its genome. A disjunct population, for example is likely to exhibit genomic features distinct from those of continuous populations, reflecting its specific evolutionary history and influencing future recombination outcomes. We examined genetic diversity, population differentiation and linkage disequ ...
foresttrees, etc ; anemochory; autochory; genes; kinship; landscapes; outcrossing; plant genetics; population density; wind; zoochory; Show all 11 Subjects
Abstract:
... Gene dispersal processes shape demographic and microevolutionary dynamics of tree species. Gene dispersal patterns can be studied by spatially explicit methods. Spatial genetic structure (SGS), summarized in the Sp statistic, provides indirect estimates of gene dispersal across generations for a known or assumed population effective density. Sp is modulated by exogenous and endogenous factors incl ...
foresttrees, etc ; Ceratocystis; Metrosideros excelsa; death; disease severity; mortality; pathogens; plant pathology; vascular wilt; Show all 9 Subjects
Abstract:
... Metrosideros excelsa (pōhutukawa) is an important native tree species in Aotearoa-New Zealand. Ceratocystis lukuohia is an aggressive wilt pathogen of the Hawaiian forest tree M. polymorpha (‘ōhi ‘a) and could be a threat to pōhutukawa. A host response study was conducted to evaluate the susceptibility of M. excelsa seedlings to C. lukuohia infection. Forty-eight M. excelsa seedlings from six pare ...
Luiz Blaine C.; Giardina Christian P.; Keith Lisa M.; Jacobs Douglass F.; Sniezko Richard A.; Hughes Marc A.; Friday James B.; Cannon Philip; Hauff Robert; Francisco Kainana; Chau Marian M.; Dudley Nicklos; Yeh Aileen; Asner Gregory; Martin Roberta E.; Ryan Perroy; Brian J. Tucker; ʻAleʻalani Evangelista; Veronica Fernandez; Chloe Martins-Keliʻihoʻomalu; Kirie Santos
foresttrees, etc ; Ceratocystis; Hawaii; Metrosideros polymorpha; death; dieback; disease resistance; durability; greenhouses; keystone species; mortality; Show all 11 Subjects
Abstract:
... Metrosideros polymorpha Gaud. ('ohi'a) is the most abundant native forest tree in Hawai'i and a keystone species of cultural, ecological, and economic importance. However, stands of M. polymorpha are being severely impacted by Rapid 'Ohi'a Death (ROD), which is characterized by branch dieback, crown wilting, and mortality. Research revealed that ROD is caused by two novel species of Ceratocystis p ...
foresttrees, etc ; dendrology; drought; drought tolerance; forest ecosystems; forests; humans; karsts; mountains; water shortages; China; Show all 11 Subjects
Abstract:
... Human interventions such as tunnel construction have caused groundwater depletion, which substantially affected the functions of forest tree species and their communities. However, the extent to which tunneling-induced groundwater depletion (TIGD) degrades their function levels at various spatial-temporal scales under varying climate conditions remains still unclear. Researchers used stand-scale d ...
foresttrees, etc ; Peltophorum dubium; forests; imbibition; seed germination; seed weight; water content; weight gain; Brazil; Show all 9 Subjects
Abstract:
... Although providing the basis for seed germination studies, there is little information available on seed imbibition curves for Brazilian forest species. Among the few studied species, the theoretical triphasic pattern may not apply, hampering the conduction of subsequent studies that require a clear definition of imbibition phases. In this paper, we characterize the seed imbibition curves of 25 Br ...
foresttrees, etc ; bioeconomics; climate change; dieback; forest management; forests; genetic variation; issues and policy; phenotypic plasticity; Show all 9 Subjects
Abstract:
... Climate change triggered forest die-back is a huge concern worldwide. Arboretums and common gardens comparing geographic origins within species can provide a large body of valuable information and material usable to increase forest resilience. Common gardens have been foundational in demonstrating the existence of genetic diversity, local adaptation and phenotypic plasticity. They have also been i ...
... Biomass and carbon content are essential indicators for monitoring forest ecosystems and their role in climate action, but their estimation is not straightforward. A typical approach to solve these limitations has been the estimation of tree or stand biomass based on forest inventory data, using either allometric equations or biomass expansion factors. Many allometric equations exist, but very few ...
foresttrees, etc ; aerial photography; data collection; forest dynamics; forest stands; forests; models; statistics; tree age; Finland; Show all 10 Subjects
Abstract:
... The spatial structure of a forest stand is typically modeled by spatial point process models. Motivated by aerial forest inventories and forest dynamics in general, we propose a sequential spatial approach for modeling forest data. Such an approach is better justified than a static point process model in describing the long-term dependence among the spatial location of trees in a forest and the lo ...
foresttrees, etc ; administrative management; biomass; forest ecology; mortality; stand structure; tree mortality; tropical forests; understory; Argentina; Show all 10 Subjects
Abstract:
... Long-term studies are key to understanding the dynamics of managed forests, especially as related to timber supplies. We evaluated 20 years of recovery of pre-harvest structure, biomass, and timber stocks of a Subtropical Atlantic Forest in Argentina subjected to either conventional selective logging (CL = ∼15 m³ ha⁻¹) or reduced-impact logging (RIL = ∼11 m³ ha⁻¹); we also monitored the dynamics o ...
foresttrees, etc ; Carpinus betulus; Tilia cordata; cages; forest canopy; herbivores; plant architecture; temperate forests; tree growth; ungulates; Show all 10 Subjects
Abstract:
... Tree architectures reflect the main abiotic and biotic selection pressures determining tree growth and survival. Studies have shown that trees growing in herbivore‐dominated ecosystems, such as savannas, develop denser, more divaricate ‘cage’‐like architectures in response to chronic browsing pressure (also known as ‘brown world’ architectures). In contrast, trees growing under resource‐limited co ...
foresttrees, etc ; Pterocarpus dalbergioides; allometry; demography; forest ecosystems; habitats; natural regeneration; population dynamics; population structure; research; India; Show all 11 Subjects
Abstract:
... Natural regeneration potential is an important indicator for any forest ecosystem and Andaman Padauk (Pterocarpus dalbergioides) is the principal timber tree endemic to Andaman & Nicobar Islands. This study analyzed the natural regeneration potential of Andaman Padauk under different disturbance regimes across its distribution range with regard to population dynamics, growth pattern, population st ...