207 results match your criteria beech pine


Tocilizumab in patients admitted to hospital with COVID-19 (RECOVERY): a randomised, controlled, open-label, platform trial.

Authors:

Lancet 2021 May;397(10285):1637-1645

Background: In this study, we aimed to evaluate the effects of tocilizumab in adult patients admitted to hospital with COVID-19 with both hypoxia and systemic inflammation.

Methods: This randomised, controlled, open-label, platform trial (Randomised Evaluation of COVID-19 Therapy [RECOVERY]), is assessing several possible treatments in patients hospitalised with COVID-19 in the UK. Those trial participants with hypoxia (oxygen saturation <92% on air or requiring oxygen therapy) and evidence of systemic inflammation (C-reactive protein ≥75 mg/L) were eligible for random assignment in a 1:1 ratio to usual standard of care alone versus usual standard of care plus tocilizumab at a dose of 400 mg-800 mg (depending on weight) given intravenously. Read More

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Pathology of Urinary Bladder in spp. Infected Wildlife from Central Italy.

Pathogens 2021 Apr 14;10(4). Epub 2021 Apr 14.

Istituto Zooprofilattico Sperimentale delle Regioni Lazio e Toscana, Viale Europa 30, 58100 Grosseto, Italy.

The genus , in the nematode family , includes several species that parasitize the urinary bladders of wild and domestic carnivores. The infection has been reported worldwide from several wildlife species, including canids, mustelids, and felids, but the pathological aspects have seldom been investigated. In order to assess the presence and severity of the lesions in -infected wildlife, we performed a parasitological and pathological examination of urinary bladders from 72 animals, belonging to the families (red fox , = 28, and wolf , = 29) and (beech marten , = 3; pine marten , = 2; and European badger , = 10). Read More

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The Role of Mustelids in the Transmission of spp. Using Cattle as Intermediate Hosts.

Animals (Basel) 2021 Mar 15;11(3). Epub 2021 Mar 15.

Nature Research Centre, Akademijos Str. 2, LT-08412 Vilnius, Lithuania.

There is a lack of research on the role of mustelids in the transmission of various spp. In the present study we tested the hypothesis that widespread mustelids in Lithuania could be involved in the transmission of spp. using cattle as intermediate hosts. Read More

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The GenTree Platform: growth traits and tree-level environmental data in 12 European forest tree species.

Gigascience 2021 Mar;10(3)

Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria - Centro de Investigación Forestal (INIA-CIFOR), Ctra. de la Coruña km 7.5, 28040, Madrid, Spain.

Background: Progress in the field of evolutionary forest ecology has been hampered by the huge challenge of phenotyping trees across their ranges in their natural environments, and the limitation in high-resolution environmental information.

Findings: The GenTree Platform contains phenotypic and environmental data from 4,959 trees from 12 ecologically and economically important European forest tree species: Abies alba Mill. (silver fir), Betula pendula Roth. Read More

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From allozymes to NGS: population genetics of forest trees in Slovakia in the past 40 years.

Biologia (Bratisl) 2021 Mar 12:1-8. Epub 2021 Mar 12.

Faculty of Wood Technology, Technical University in Zvolen, TG Masaryka 24, 96001 Zvolen, Slovakia.

This review summarizes the development of population genetics and population genomics studies of forest trees in Slovakia during the past 40 years. Various protein and DNA markers have been applied during this period to address several topics in evolutionary genetics and biogeography of trees: allozymes, uniparentally inherited chloroplast and mitochondrial markers, simple sequence repeats and single nucleotide polymorphisms. The main object of studies of phylogeny and postglacial migration were s. Read More

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Evaluating the effect of stand properties and site conditions on the forest reflectance from Sentinel-2 time series.

PLoS One 2021 15;16(3):e0248459. Epub 2021 Mar 15.

Department of Forest Resources Management, Faculty of Forestry, University of Agriculture in Kraków, Kraków, Poland.

Forest stand reflectance at the canopy level results from various factors, such as vegetation chemical properties, leaf morphology, canopy structure, and tree sizes. These factors are dependent on the species, age, and health statuses of trees, as well as the site conditions. Sentinel-2 imagery with the high spatial, spectral, and temporal resolution, has enabled analysis of the relationships between vegetation properties and their spectral responses at large spatial scales. Read More

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Three-dimensional imaging of xylem at cell wall level through near field nano holotomography.

Sci Rep 2021 Feb 25;11(1):4574. Epub 2021 Feb 25.

Thünen-Institute of Wood Research, Leuschnerstraße 91, Hamburg-Bergedorf, 21031, Hamburg, Germany.

Detailed imaging of the three-dimensionally complex architecture of xylary plants is important for studying biological and mechanical functions of woody plants. Apart from common two-dimensional microscopy, X-ray micro-computed tomography has been established as a three-dimensional (3D) imaging method for studying the hydraulic function of wooden plants. However, this X-ray imaging method can barely reach the resolution needed to see the minute structures (e. Read More

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February 2021

Determination of multi pesticide residues in leaf and needle samples using a modified QuEChERS approach and gas chromatography-tandem mass spectrometry.

Anal Methods 2021 03;13(9):1138-1146

Department of Pharmacy, Center for Drug Research, Ludwig-Maximilians-University, Butenandstr. 5-13, DE-81377 Munich, Germany.

In order to gain a better insight into pesticide and pollutant exposure in forests, a rapid and sensitive gas chromatography-tandem mass spectrometry (GC-MS/MS) method for the determination of 208 pesticide residues in leaves and needles has been established. The modified QuEChERS (quick, easy, cheap, effective, rugged and safe) approach uses 2 g of homogenized sample, acetonitrile and water as extraction agents, combined with citrate buffer for the following salting out step. The limits of quantification (LOQs) were determined to 0. Read More

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Three-dimensional model of magnetic susceptibility in forest topsoil: An indirect method to discriminate contaminant migration.

Environ Pollut 2021 Jan 18;273:116491. Epub 2021 Jan 18.

Department of Ecology and Silviculture, Faculty of Forestry, University of Agriculture, Al. 29 Listopada 46, 31-425, Cracow, Poland. Electronic address:

Soil magnetic susceptibility (MS) is an important parameter in pollution studies owing to its relationship with atmospheric deposition, and the concomitance of technogenic magnetic particles (TMPs) with potentially toxic elements (PTEs), Fe and Mn. In this study, we performed a detailed soil study under tree canopies for a forest area with high historical TMP-bearing industrial dust deposition. The technogenic sources of magnetic signals in topsoil were analyzed via scanning electron microscope electron dispersive spectroscopy (SEM/EDS), while the minor role of geogenic sources was obtained from soil profile analysis. Read More

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January 2021

A dataset with complete geographic distributions of eight zonal monospecific forest types in mainland Spain.

Data Brief 2021 Feb 26;34:106681. Epub 2020 Dec 26.

Estación Experimental de Zonas Áridas, CSIC, Sacramento Rd., 04120 La Cañada de San Urbano, Almería, Spain.

Distribution area and surface are both parameters of paramount importance for habitat management, monitoring and conservation. Here we present the distribution of eight zonal forest types of mainland Spain that are consistent with the Habitat Types (HT) listed in Annex I of the European Union Habitats Directive 92/43 EC. Their dominant species and HT codes are (9120, 9130 and 9150), and (9230), (9330), (9430), ssp. Read More

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February 2021

The morphological and molecular characterization of Baylisascaris devosi Sprent, 1952 (Ascaridoidea, Nematoda), collected from Pine marten (Martes martes) in Iran.

Parasit Vectors 2021 Jan 8;14(1):33. Epub 2021 Jan 8.

Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.

Background: Baylisascaris devosi is an intestinal nematode found in several carnivores including fisher, wolverine, Beech marten, American marten and sable in different parts of the world, but this nematode has not been reported from Pine marten. Therefore, this study aimed to identify Baylisascaris isolated from a Pine marten in Iran using morphological and molecular approaches.

Methods: Specimens of B. Read More

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January 2021

Do trees have constant branch divergence angles?

J Theor Biol 2021 03 24;512:110567. Epub 2020 Dec 24.

TUM School of Life Sciences Weihenstephan, Technische Universität München, Hans-Carl-von-Carlowitz-Platz 2, 85354 Freising, Germany.

Many herbaceous plants feature remarkably regular arrangements of lateral organs along the central axis. These phyllotactic patterns are generated by a constant divergence angle between successive buds (or whorls thereof) that first appears at the shoot apircal meristem and is maintained across later ontogentic stages when it can be observed at the macroscopic scale. Do the branches along a tree trunk exhibit similar patterns? Here we use branch skeleton data derived from terrestrial laser scans to empirically estimate the distributions of the divergence angles between successive branches along the trunks of mature European beech, Norway spruce, and Scots pine trees. Read More

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Traditional and TLS-based forest inventories of beech and pine forests located in Sila National Park: A dataset.

Data Brief 2021 Feb 5;34:106617. Epub 2020 Dec 5.

Research Centre for Forestry and Wood, CREA, viale Santa Margherita 80, Arezzo, Italy.

Vegetation structure is a key determinant of species distribution and diversity. Compared to traditional methods, the use of Terrestrial Laser Scanning (TLS) has allowed massive amounts of point cloud data collected for quantifying three-dimensional habitat properties at increasing spatial and temporal scales. We used TLS to characterize the forest plots across a broad range of forest structural diversity, located in the Sila National Park, South Italy. Read More

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February 2021

Effects of drought on nitrogen uptake and carbon dynamics in trees.

Tree Physiol 2020 Nov 4. Epub 2020 Nov 4.

Forest Dynamics, Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, 8903 Birmensdorf, Switzerland.

Research on drought impact on tree functioning is focused primarily on water and carbon (C) dynamics. Changes in nutrient uptake might also affect tree performance under drought and there is a need to explore underlying mechanisms. We investigated effects of drought on a) in-situ nitrogen (N)-uptake accounting for both, N availability to fine-roots in soil and actual N-uptake, b) physiological N-uptake capacity of roots, and c) the availability of new assimilates to fine roots influencing the N-uptake capacity using 15N and 13C labelling. Read More

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November 2020

Fungal Planet description sheets: 1042-1111.

Persoonia 2020 Jun 29;44:301-459. Epub 2020 Jun 29.

Manaaki Whenua - Landcare Research, Private Bag 92170, Auckland 1142, New Zealand.

Novel species of fungi described in this study include those from various countries as follows: , from marine sediment sand. , (incl. gen. Read More

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Effect of the Drying Method of Pine and Beech Wood on Fracture Toughness and Shear Yield Stress.

Materials (Basel) 2020 Oct 21;13(20). Epub 2020 Oct 21.

The Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80231 Gdansk, Poland.

The modern wood converting processes consists of several stages and material drying belongs to the most influencing future performances of products. The procedure of drying wood is usually realized between subsequent sawing operations, affecting significantly cutting conditions and general properties of material. An alternative methodology for determination of mechanical properties (fracture toughness and shear yield stress) based on cutting process analysis is presented here. Read More

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October 2020

Responses of native and invasive woody seedlings to combined competition and drought are species-specific.

Tree Physiol 2021 03;41(3):343-357

Plant Interactions Ecophysiology Group, Department of Biology, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany.

Woody species invasions are a major threat to native communities with intensified consequences during increased periods of summer drought as predicted for the future. Competition for growth-limiting nitrogen (N) between native and invasive tree species might represent a key mechanism underlying the invasion process, because soil water availability and N acquisition of plants are closely linked. To study whether the traits of invasive species provide an advantage over natives in Central Europe in the competition for N under drought, we conducted a greenhouse experiment. Read More

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Consequences of different sample drying temperatures for accuracy of biomass inventories in forest ecosystems.

Sci Rep 2020 09 29;10(1):16009. Epub 2020 Sep 29.

Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035, Kórnik, Poland.

Biomass estimation is one of the crucial tasks of forest ecology. Drying tree material is a crucial stage of preparing biomass estimation tools. However, at this step researchers use different drying temperatures, but we do not know how this influences accuracy of models. Read More

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September 2020

Plant species richness increases with light availability, but not variability, in temperate forests understorey.

BMC Ecol 2020 07 29;20(1):43. Epub 2020 Jul 29.

Biometry & Environmental System Analysis, University of Freiburg, Tennenbacher Str. 4, 79104, Freiburg, Germany.

Background: Temperate forest understorey vegetation poses an excellent study system to investigate whether increases in resource availability lead to an increase in plant species richness. Most sunlight is absorbed by the species-poor tree canopy, making the much more species-rich understorey species inhabit a severely resource-limited habitat. Additionally, the heterogeneity of light availability, resulting from management-moderated tree composition and age structure, may contribute to species coexistence. Read More

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Determination of mesopores in the wood cell wall at dry and wet state.

Sci Rep 2020 06 12;10(1):9543. Epub 2020 Jun 12.

Universität Hamburg, Department Chemistry, Institute of Inorganic and Applied Chemistry, Martin-Luther-King-Platz 6, 20146, Hamburg, Germany.

Wood porosity is of great interest for basic research and applications. One aspect is the cell wall porosity at total dry state. When water is absorbed by wood, the uptake of water within the cell wall leads to a dimension change of the material. Read More

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Inter- and intra-tree variability of carbon and oxygen stable isotope ratios of modern pollen from nine European tree species.

PLoS One 2020 9;15(6):e0234315. Epub 2020 Jun 9.

Institute of Geological Sciences, Palaeontology, Freie Universität Berlin, Berlin, Germany.

Stable carbon and oxygen isotope ratios of raw pollen sampled from nine abundant tree species growing in natural habitats of central and northern Europe were investigated to understand the intra- and inter-specific variability of pollen-isotope values. All species yielded specific δ13Cpollen and δ18Opollen values and patterns, which can be ascribed to their physiology and habitat preferences. Broad-leaved trees flowering early in the year before leaf proliferation (Alnus glutinosa and Corylus avellana) exhibited on average 2. Read More

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Acute effects of PAH contamination on microbial community of different forest soils.

Environ Pollut 2020 Jul 14;262:114378. Epub 2020 Mar 14.

Department of Sciences and Technologies, University of Sannio, Benevento, 82100, Italy.

Polycyclic aromatic hydrocarbons (PAHs) are hazardous organic compounds with mutagenic, genotoxic and carcinogenic properties. Although PAHs in soil can cause toxicity to microorganisms, the microbial community is able to degrade these compounds. For this reason, it is important to study acute and short-term effects of PAH contamination on soil microbial community, also to shed light on its possible exploitation in soil restoration. Read More

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Concentrations of Particulate Matter and PM-Bound Polycyclic Aromatic Hydrocarbons Released during Combustion of Various Types of Materials and Possible Toxicological Potential of the Emissions: The Results of Preliminary Studies.

Int J Environ Res Public Health 2020 05 5;17(9). Epub 2020 May 5.

The Main School of Fire Service, Safety Engineering Institute, Slowackiego Street, 52/54, 01-629 Warsaw, Poland.

The aim of this study was to compare the concentrations of particulate matter (PM) and PM-bound polycyclic aromatic hydrocarbons (PAHs) during the combustion of various types of materials (i.e., oak, beech, and pine wood, polypropylene, polyurethane, paper, cotton, and oriented strand board (OSB)), and to compare the carcinogenic, mutagenic, and toxic potential of the emissions during the burning of these materials. Read More

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Combining Cost-Efficient Cellulose and Short-Chain Carboxylic Acid Production: The Polyoxometalate (POM)-Ionosolv Concept.

Chempluschem 2020 02;85(2):373-386

Lehrstuhl für Chemische Reaktionstechnik, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91058, Erlangen, Germany.

Full cost-effective exploitation of all wood components is key to growing a commercially successful biorefining industry. An innovative process is reported that combines fractionation of lignocellulosic biomass using a low-cost ionic liquid (Ionosolv) and production of bio-derived formic acid using polyoxometalates and molecular oxygen (OxFA process). We show that the hemicellulose and part of the lignin were selectively dissolved into the ionic liquid triethylammonium hydrogen sulfate and oxidised in situ to short-chain, distillable carboxylic acids by a Keggin-type polyoxometalate with high yields and selectivities. Read More

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February 2020

Non-structural carbohydrate concentrations of Fagus sylvatica and Pinus sylvestris fine roots are linked to ectomycorrhizal enzymatic activity during spring reactivation.

Mycorrhiza 2020 May 20;30(2-3):197-210. Epub 2020 Feb 20.

Institute of Forest Ecology, University of Natural Resources and Life Sciences (BOKU), Vienna, Austria.

We evaluated whether changes in fine root non-structural carbohydrate reserves of Fagus sylvatica and Pinus sylvestris trees influence potential enzymatic activities of their ectomycorrhizal symbionts from winter towards spring reactivation, and whether these changes influence potential soil enzymatic activities. We analyzed sugar and starch concentrations in the fine roots of Fagus sylvatica and Pinus sylvestris and potential activities of ß-glucosidase, ß-xylosidase, and cellobiohydrolase (as proxies for carbon-degrading enzymes) as well as leucine aminopeptidase and chitinase (as proxies for nitrogen-degrading enzymes) of their dominant ectomycorrhizal symbionts as well as in the soil. Sugar concentrations in the fine roots were significantly positively correlated with enzymatic activities of the ectomycorrhizal symbionts. Read More

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Cellulose and Lignin Nano-Scale Consolidants for Waterlogged Archaeological Wood.

Front Chem 2020 29;8:32. Epub 2020 Jan 29.

Department for Innovation in Biological, Agro-Food and Forestry Systems (DIBAF), Tuscia University, Viterbo, Italy.

Waterlogged archaeological wood comes from submerged archaeological sites (in lake, sea, river, or wetland) or from land waterlogged sites. Even if the wooden object seems to have maintained the original size and shape, the wood is more or less severely decayed because of chemical and biological factors which modify the normal ratio of cellulose and lignin in the cell wall. Drying procedures are necessary for the musealization but potentially cause severe shrinkages and collapses. Read More

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January 2020

Investigating the relationship between climate, stand age, and temporal trends in masting behavior of European forest trees.

Glob Chang Biol 2020 03 17;26(3):1654-1667. Epub 2020 Jan 17.

PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, Wilrijk, Belgium.

Masting-temporally variable seed production with high spatial synchrony-is a pervasive strategy in wind-pollinated trees that is hypothesized to be vulnerable to climate change due to its correlation with variability in abiotic conditions. Recent work suggests that aging may also have strong effects on seed production patterns of trees, but this potential confounding factor has not been considered in previous times series analysis of climate change effects. Using a 54 year dataset for seven dominant species in 17 forests across Poland, we used the proportion of seed-producing trees (PST) to contrast the predictions of the climate change and aging hypotheses in Abies alba, Fagus sylvatica, Larix decidua, Picea abies, Pinus sylvestris, Quercus petraea, and Quercus robur. Read More

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β-Diversity partitioning of moth communities within and between different forest types.

Naturwissenschaften 2020 Jan 10;107(1). Epub 2020 Jan 10.

Council for Agricultural Research and Economics, Research Centre for Forestry and Wood, 87036, Rende, Italy.

The partitioning of β-diversity is a recurrent practice in biogeographic and ecological studies that can provide key insights for land management, such as identification of biodiversity hot-spots. In this study, we used Baselga's metrics to measure the contribution of spatial turnover (β) and nestedness-resultant dissimilarity (β) to overall β-diversity (β) within- and between-forest types. We analyzed a presence/absence dataset concerning 593 species of nocturnal Lepidoptera sampled within chestnut, silver fir, beech, and black pine forests of southern Italy. Read More

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January 2020

Share the wealth: Trees with greater ectomycorrhizal species overlap share more carbon.

Mol Ecol 2020 07 27;29(13):2321-2333. Epub 2020 Jan 27.

Department of Plant & Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel.

The mutualistic symbiosis between forest trees and ectomycorrhizal fungi (EMF) is among the most ubiquitous and successful interactions in terrestrial ecosystems. Specific species of EMF are known to colonize specific tree species, benefitting from their carbon source, and in turn, improving their access to soil water and nutrients. EMF also form extensive mycelial networks that can link multiple root-tips of different trees. Read More

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The GenTree Dendroecological Collection, tree-ring and wood density data from seven tree species across Europe.

Sci Data 2020 01 2;7(1). Epub 2020 Jan 2.

Vytautas Magnus University, Studentu Street 11, 53361, Akademija, Lithuania.

The dataset presented here was collected by the GenTree project (EU-Horizon 2020), which aims to improve the use of forest genetic resources across Europe by better understanding how trees adapt to their local environment. This dataset of individual tree-core characteristics including ring-width series and whole-core wood density was collected for seven ecologically and economically important European tree species: silver birch (Betula pendula), European beech (Fagus sylvatica), Norway spruce (Picea abies), European black poplar (Populus nigra), maritime pine (Pinus pinaster), Scots pine (Pinus sylvestris), and sessile oak (Quercus petraea). Tree-ring width measurements were obtained from 3600 trees in 142 populations and whole-core wood density was measured for 3098 trees in 125 populations. Read More

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January 2020