The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Key messageThe number of days on which a measureable increment occurred, and the average rate of stem growth, rather than the overall duration of the wet season, were the main determinants of ring width in young Callitris intratropica trees. These effects were amplified by competition. Abstract Dendroclimatology of tropical tree species is an important tool for understanding past climatic variability...
Key messageBranch, crown vertical leaf area distribution models were developed for naturally regenerated hardwood species and planted hybrid poplar clones. Species-specific differences were found at all levels of investigation. Abstract Coexistence in mixed-species stands is strongly influenced by species differences in leaf area production and distribution. The majority of leaf area models...
Key messageUse of wood ash or a mixture of wood and oil shale ashes increases the concentrations of P and K in the assimilation organs of conifers and stimulates tree growth. Abstract The effect of fertilization with wood ash (10 and 15 t ha−1) and a mixture of wood ash (10 t ha−1) and oil shale ash (8 t ha−1) on the growth (height, root collar diameter, biomass, biomass production) and nutrient...
To control invasive Anoplophora outbreaks, it is crucial to accurately date infestation dynamics. Dating of Anoplophora outbreaks is possible as these xylobiont insects induce wounds in living trees by forming e.g., exit holes. This study investigates to what precision these wounds can be dated with dendrochronological techniques. In an experimental setting, we studied the precision of wound dating...
Key messageMaintenance ofCaryain successional stands will require canopy disturbances larger than the gap-scale to increase understory light in conjunction with reduction in competition from shade-tolerant mesophytes. Abstract A widespread compositional shift has been reported in Quercus–Carya forests throughout the eastern USA. Quercus and Carya are failing to regenerate and understories...
Key MessageIn a field study, transgenic poplars with lower xyloglucan content showed distinct differences from wild-type plants in having a tubby stem morphology as well as smaller and thicker leaves with a stomatal adjustment dysfunction. Abstract Two transgenic lines of Populus alba which overexpressed Aspergillus xyloglucanase (trg300-1, trg300-2) showed inferior growth compared to the wild-type...
Key messageAcross sites in Brazil and Hawaii, LMA and Nmasswere strongly correlated with height and shade index, respectively, which may help simplify canopy function modeling ofEucalyptusplantations. Abstract Within tree canopies, leaf mass per area (LMA) and leaf nitrogen per unit area (Narea) commonly increase with height. Previous research has suggested that these patterns occur...
The radial, axial and inter-specific variations in concentrations and contents of non-structural carbohydrates (NSC) in stems were investigated for 12 Chinese temperate tree species. These species had contrasting leaf phenology (evergreen and deciduous) and wood types (non-, ring- and diffuse-porous wood). For each species, we sampled bark (periderm and phloem), outer wood (light-colored) and inner...
Key messageOutplantedPolylepis australisseedling growth, survival and mycorrhizal response were not influenced by inoculation with soil from different vegetation types. Seedling inoculation would not be essential for reforestation practices. Abstract Polylepis forests are one of the most endangered high mountain ecosystems of South America and reforestation with native Polylepis species...
Key messageRelevance of spring temperatures for tree-ring growth steadily increased since 1950s. Closely linked tree-ring growth and net CO2exchange driven by spring temperatures. Abstract We investigated long-term (over 100 years) tree-ring width (TRW) variabilities as well as short-term (10 years) variations in net ecosystem productivity (NEP) in response to climate to assess the driving...
Radial variations in vessel features (vessel lumen area and frequency) of four tropical tree species grown in tropical savanna, monsoon, and rainforest climates were investigated to detect indistinct annual rings. Leaf and soil water potentials were measured periodically to show annual variations in water availability and their relationship to radial variations in vessel features. In addition, the...
Key messageOur manuscript provides novel information about the sway response of large, open-grown trees, for which there are very few data. Our results contrast previous studies on conifers. Abstract Open-grown trees in residential settings, which often assume a decurrent form, provide many benefits but also pose a risk to people and property if they fail. Reliable mechanistic models to predict...
Key messageCarrizo citrange was the most tolerant citrus rootstock to B-deficiency and some physiological performance could be attributed to the decreased mineral nutrient concentrations caused by B-deficiency. Abstract Boron (B) is an essential microelement for normal growth and development in vascular plants, and adequate B nutrition is crucial for agricultural production. Although citrus...
Key MessageArbuscular mycorrhizal (AM) symbiosis can improve date palm growth and alleviate drought-related impacts than non-mycorrhizal plants due to the ability of AMF for modifying plant metabolism and physiology. Abstract Date palm (Phoenix dactylifera L.) is an important agricultural and commercial crop in the North of Africa and Middle Eastern countries. During the last decade, date...
Key messageThe developmental sequences of zygotic embryos of green ash collected from the same tree were widely asynchronous and an intermediate developmental stage was the best explant for inducing somatic embryogenesis. Abstract All North American ash (Fraxinus) species are under threat of extirpation from their native ranges by the emerald ash borer (EAB; Agrilus planipennis), an exotic...
We conducted measurements with oak (Quercus robur L.) and black cherry (Prunus serotina Ehrh.) seedlings to investigate their volatile organic compound (VOC) emission behavior to flooding and drought conditions. A novel cuvette enclosure approach was applied on 18 individuals and emission rates were derived using proton transfer reaction-mass spectrometry (PTR-MS) and gas chromatography–mass spectrometry...
Key messageProductivity changes in Norway spruce show important regional and local spatial variations, highlighting their context dependence at different spatial scales. These variations suggest the enhancing role of climate warming, and interplay with local water and nutrient limitations. Abstract While forest growth changes have been observed in many places worldwide, their spatial variation...
A simple tree swaying model, valid for windstorm conditions, has been developed for the purpose of simulating the effect of strong wind on the vulnerability of heterogeneous forest canopies. In this model the tree is represented as a flexible cantilever beam whose motion, induced by turbulent winds, is solved through a modal analysis. The geometric nonlinearities related to the tree curvature are...
Key messageThis study is the first to quantify tree water use below 50°S. Tree morphology differs markedly among the two investigated species, reflecting adjustment to different environmental cues. Abstract A pronounced environmental gradient dictates the dominance of Nothofagus in the foothills on the eastern side of the Andes Mountains in Patagonia, Argentina. Below 50° southern latitude,...
Key messageFrequent cloud immersion events result in direct uptake of cloud water and improve plant water potentials during daylight hours in saplings of two dominant cloud forest species. Abstract In ecosystems with frequent cloud immersion, the influence on plant water balance can be important. While cloud immersion can reduce plant water loss via transpiration, recent advances in methodology...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.