Forestry

Precipitation reconstruction for the southern Altay Mountains (China) from tree rings of Siberian spruce, reveals recent wetting trend
We developed six tree-ring width chronologies of Siberian spruce (Picea obovata) from the low elevation forest of the southern Altay Mountains in northern Xinjiang, China. Although the six chronologies come from different sampling sites, significant correlations existed among the chronologies (r ≥ 0.477), and the first principal component (PC1) accounted for 72.2% of total variance over their...


Initial characterization of an unidentified Armillaria isolate from Serbia using LSU-IGS1 and TEF-1-α genes
Armillaria species have a global distribution and play variable ecological roles, including causing root disease of diverse forest, ornamental and horticultural trees. Accurate identification of Armillaria species is critical to understand their distribution and ecological roles. This work focused on characterizing an unidentified Armillaria isolate from a Serbian forest using pairing, sequenci...
Cryphonectria hypovirus 1 (CHV-1) survey reveals low occurrence and diversity of subtypes in NE Spain
Cryphonectria parasitica (Murrill.) Barr is a necrotrophic fungus that affects European chestnut populations. In Catalonia (NE Spain), this fungus is widely spread affecting chestnut stands. In addition to vegetative compatibility (VC) types of the fungus, knowledge of the Cryphonectria hypovirus (CHV) occurrence is important to implement a biocontrol programme. We confirmed the presence of hyp...


Challenges of Governing Second-Growth Forests: A Case Study from the Brazilian Amazonian State of Para
Despite the growing ecological and social importance of second-growth and regenerating forests across much of the world, significant inconsistencies remain in the legal framework governing these forests in many tropical countries and elsewhere. Such inconsistencies and uncertainties undermine attempts to improve both the transparency and sustainability of management regimes. Here, we present a ...
Performance of MUF honeymoon adhesive for glulam
Glulam beams were prepared using pine boards glued together with a melamine-urea–formaldehyde (MUF) adhesive by means of an experimental fast-setting process called “honeymoon”. In this process, MUF is spread on the face of the first part, then an acid is spread on the face of the second part and the two are assembled. Mechanical properties of the beams remain very good even after severe ...


Improvement of termite resistance, dimensional stability and mechanical properties of pine wood by paraffin impregnation
Paraffin has been used as surface protection of wood throughout the ages but its use for impregnation to improve wood resistance to biodegradation is recent. This study determined the main improvements on wood properties with paraffin impregnation. Healthy Pinus pinaster Ait. wood was impregnated with paraffin at different levels using a hot–cold process. Weight gain, equilibrium moisture con...
Xyleborus glabratus attacks and systemic colonization by Raffaelea lauricola associated with dieback of Cinnamomum camphora in the southeastern United States
Laurel wilt, caused by Raffaelea lauricola, is responsible for extensive mortality of redbay and other American members of the Lauraceae in the southeastern United States. Raffaelea lauricola is a mycangial symbiont of the redbay ambrosia beetle (Xyleborus glabratus), and the beetle and fungus were accidentally introduced from Asia. Branch dieback of camphortree (Cinnamomum camphora), an Asian ...

Using optical full-field measurement based on digital image correlation to measure strain on a tree subjected to mechanical load
The results indicate the usability of DIC technique in tree biomechanics is advantageous compared to standard procedure since it reveals the induced strain in full-field way, accurately and noninvasively. The goal of this study was to analyze and measure the displacement and strain response behavior of the tree (Juglans regia L.) subjected to a mechanical load. The analysis addresses issues of ...
Aleppo pine vulnerability to climate stress is independent of site productivity of forest stands in southeastern Spain
Climate is the main driver of Aleppo pine radial growth variability irrespective of site productivity, with the climate effects on tree growth more limiting from 1970 onwards. Forest management adaptation to climate change requires identifying the previously most vulnerable stands and the possible climate impacts on forests. This study evaluates whether site index, as an indicator of forest pro...

Xylem and phloem phenology in co-occurring conifers exposed to drought
Variability in xylem and phloem phenology among years and species is caused by contrasting temperatures prevailing at the start of the growing season and species-specific sensitivity to drought. The focus of this study was to determine temporal dynamics of xylem and phloem formation in co-occurring deciduous and evergreen coniferous species in a dry inner Alpine environment (750 m a.s.l., Tyro...
Stable carbon and nitrogen isotope ratios of Eucalyptus and Acacia species along a seasonal rainfall gradient in Western Australia
EucalyptusandAcaciaspecies were surprisingly similar with respect to variations in δ13C, δ15N. Both genera respond with speciation and associated changes in leaf structure to drought. Stable carbon and nitrogen isotope ratios (δ13C and δ15N) in leaves of eucalypts (Corymbia and Eucalyptus) and Acacia (and some additional Fabaceae) species were investigated together with specific leaf area (...

A review on transporters in salt tolerant mangroves
The role of transporters in imparting salt tolerance to mangroves is not yet understood. Identification of the role of transporters in halophytes is promising, as far as the development of genetically engineered salt tolerant crops is concerned. Mangroves are models for stress tolerance and they provide a reservoir for some of the novel genes and proteins, involved in salt tolerance. Biochemica...
A new wild type of Citron (Citrus medica L., Rutaceae) identified through morphology and psbM-trnD spacer region of chloroplast DNA
This study showed that Themachhi is genetically very close toC. medicaand consistently grouped with the typical citron in all the phylogenetic trees; hence revealed the identity of ‘Themachhi’ as a natural wild type ofC. medica. Taxonomic identity and well-supported phylogenetic relationships of doubtful and taxonomically uncertain taxa are highly requisite for developing crop improvement p...
Molecular characterization of Nicaraguan Pinus tecunumanii Schw. ex Eguiluz et Perry populations for in situ conservation
We conducted molecular characterization of Nicaraguan Pinus tecunumanii populations using microsatellite markers. Populations possess considerable genetic variation but there are risks associated with inbreeding and population fragmentation. We carried out a molecular characterization of three natural populations of Pinus tecunumanii using nine microsatellite markers. All studied populations oc...
In Vitro Propagation of the Important Tasar Oak (Quercus serrata Thunb.) by Casein Hydrolysate Promoted High Frequency Shoot Proliferation
An efficient micropropagation protocol has been developed for tasar oak. Nodal segments from in vitro grown seedling were used for shoot multiplication. Best shoot multiplication response, in terms of number of shoots per explant as well as shoot length, was obtained in woody plant (WP) medium supplemented with 6-benzyladenine and indole-3-acetic acid (8.88 μM BA + 1.43 μM IAA); but the estab...