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2,052 results for “tree species”
FIGURE 20 in Eriophyes species (Acari: Eriophyoidea) inhabiting lime trees (Tilia spp.: Tiliaceae) — supplementary description and morphological variability related to host plants and female forms
FIGURE 20. Nail galls on leaf of Tilia cordata inhabited by Eriophyes tiliae Nalepa 1890.
FIGURE 2. Combined gene tree for Codakiinae, expanded from Figure 1 in New molecular phylogeny of Lucinidae: increased taxon base with focus on tropical Western Atlantic species (Mollusca: Bivalvia)
FIGURE 2. Combined gene tree for Codakiinae, expanded from Figure 1.
FIGURE 3. Combined gene tree for Lucininae, expanded from Figure 1 in New molecular phylogeny of Lucinidae: increased taxon base with focus on tropical Western Atlantic species (Mollusca: Bivalvia)
FIGURE 3. Combined gene tree for Lucininae, expanded from Figure 1.
Local adaptation in the Patagonian foundation tree species Nothofagus pumilio
<p><strong>Npumilio_specific_candidate_genes.xlsx </strong></p><ul><li>Study-specific candidate genes. For annotation information on the 1,789 candidate genes from orthogroups, see Milesi at al 2023 (https://doi.org/10.1101/2023.01.05.522822 and Supplemental Tables S12-S14).</li><li>Contains contig, Uniprot-TAIR code and original species, and reason for inclusion in the candidate list (e.g. upregulated or downregulated in the heat stress-transcriptome study (https://doi.org/10.1371/journal.pone.0246615), or of interest for wood growth)</li><li>The list includes some duplicate contigs that are contained in the candidate gene set; they were left in for the "Reason" information</li></ul><p><strong>N_pumilio_06Nov2019_probe_coverage.txt</strong></p><ul><li>Probe design file as provided by IGA Technology Services</li></ul><p>All called SNP variants. Data for 502 individual tree samples are included: 496 adult trees + 6 replicates.</p><ul><li><strong>variants-gatk_haplotypecaller_SNP_raw.vcf.gz</strong> are raw called variants.</li><li><strong>variants-gatk_haplotypecaller_SNP.vcf.gz</strong> are coarsely quality-filtered and are the starting datasets for our downstream analyses.</li></ul><p><strong>Npumilio_IDs_vcforder_all_info.xlsx</strong></p><ul><li>Metadata for all samples in the .vcf files (in the same order), including site name, geographic coordinates and elevation</li></ul><p><strong>Npumilio_orthogroups.csv</strong></p><ul><li>Orthogroups, TAIR codes, and best-hit Nothofagus contigs for cross-referencing with orthogroup candidate gene set (Milesi at al 2023 (https://doi.org/10.1101/2023.01.05.522822 and Supplemental Tables S12-S14)).</li></ul><p> </p>
Figure 1. Neighbour-joining consensus tree inferred from the 16S in A new species of Arenallianassa (Decapoda: Axiidea: Callianassidae) from hydrothermal vents with notes on its ecology and a redescription of Arenallianassa arenosa (Poore, 1975)
Figure 1. Neighbour-joining consensus tree inferred from the 16S rRNA gene sequences for eight species of Callianassidae. Genbank Accession numbers are appended. Consensus support (%) based on 1000 bootstrap replicates is shown for each node. Scale indicates patristic distances.
Consumer-grade UAV imagery facilitates semantic segmentation of species-rich savanna tree layers
<p>This data set was sampled and used for the following publication:<br>Popp, M.R., Kalwij, J.M. Consumer-grade UAV imagery facilitates semantic segmentation of species-rich savanna tree layers. Sci Rep 13, 13892 (2023). http://dx.doi.org/10.1038/s41598-023-40989-7.</p> <p>The data set contains RGB orthomosaics sampled via a DJI Phantom 4 Pro at approx. 1.2 cm GSD in the folder /out.<br>Folder /shp contains subfolders that hold shapefiles delineating tree crowns by species as polygons. Species names are given in SpeciesList.csv. Encoding of the values for species/groups of species used in the study to consecutive integers can be found in class_encoding.csv.</p>
Fig. 3 in Big trees of small baskets: phylogeny of the Australian genus Spyridium (Rhamnaceae: Pomaderreae), focusing on biogeographic patterns and species circumscriptions
Fig. 3. (Caption on next page)
Fig. 2 in Big trees of small baskets: phylogeny of the Australian genus Spyridium (Rhamnaceae: Pomaderreae), focusing on biogeographic patterns and species circumscriptions
Fig. 2. (Caption on next page)
Fig. 5 in Big trees of small baskets: phylogeny of the Australian genus Spyridium (Rhamnaceae: Pomaderreae), focusing on biogeographic patterns and species circumscriptions
Fig. 5. (Caption on next page)
Stability in subtropical forests: the role of tree-species diversity, stand structure, environmental and socio-economic conditions
<p><strong>Aim: </strong>Tree species diversity can increase the stability of ecosystem productivity by increasing mean productivity and/or reducing the standard deviation in productivity. However, stand structure, environmental and socio-economic conditions influence plant diversity and may strongly influence the relationships between diversity and stability in natural forest communities. The relative importance of these factors on community stability remains poorly understood in complex (species-rich) subtropical forests.</p> <p><strong>Location: </strong>Subtropical area of southern China.</p> <p><strong>Time period: </strong>1999-2014.</p> <p><strong>Major taxa studied:</strong> Forest trees.</p> <p><strong>Methods: </strong>We conducted bivariate analyses to examine the mechanisms (overyielding and species asynchrony) underlying the effects of diversity on stability. Multiple regression models were then used to determine the relative importance of tree species diversity, stand structure, socio-economic factors and environmental conditions on stability. Structural equation modeling was used to disentangle how these variables directly and/or indirectly affect forest stability.</p> <p><strong>Results: </strong>Tree species richness exerted a positive effect on stability through overyielding and species asynchrony and this effect was stronger in mountainous forests than that in hilly forests. Species richness positively affected the mean productivity whereas species asynchrony negatively affected the variability in productivity, and hence increased forest stability. Structural diversity also had a positive effect while population density had a negative effect on stability. Precipitation variability and slope mainly indirectly influenced stability through their effects on tree species richness.</p> <p><strong>Main conclusions: </strong>Overall, tree species diversity governed stability; however stand structure, socio-economic and environmental conditions also played an important role in shaping stability in these forests. Our work highlights the importance of regulating stand structure and socio-economic factors in forest management and biodiversity conservation, to maintain and enhance their stability of providing the ecosystem services in the face of unprecedented anthropogenic activities and global climate change.</p>
Fig. 4 in Croton aleuritoides P.E. Berry (Euphorbiaceae), a distinctive new tree species from Montagne des Français in northern Madagascar
Fig. 4. – Distribution of known collections of Croton aleuritoides P.E. Berry from northern Madagascar,
Fig. 3. Maximum likelihood gene trees estimated using PhyML. A in Morphological and Genetic Characterization of the First Species of Thalassodrilides (Annelida: Clitellata: Naididae: Limnodriloidinae) from Japan
Fig. 3. Maximum likelihood gene trees estimated using PhyML. A, COI; B, ITS. Numbers at branches denote aLRT branch support. Scale shows estimated numbers of nucleotide substitutions per site.
Figure 13 in Amphibioplanidae: a new branch and family on the phylogenetic tree of the triclad flatworms (Platyhelminthes: Tricladida), represented by a species from Sardinian caves with a remarkable lifestyle
Figure 13. Amphibioplana onnisi. Schematic horizontal reconstruction of the copulatory apparatus.
Figure 3 from: Jiang N, Voglmayr H, Piao C-G, Li Y (2021) Two new species of Diaporthe (Diaporthaceae, Diaporthales) associated with tree cankers in the Netherlands. MycoKeys 85: 31-56. https://doi.org/10.3897/mycokeys.85.73107
Figure 3 Diaporthe silvicola from Fraxinus excelsiorA–C habit of conidiomata on branches D transverse section of conidiomata E longitudinal section through conidiomata F, I conidia G, H conidiophores and conidia. Scale bars: 2 mm (A), 1 mm (B), 500 μm (C), 200 μm (D, E), 10 μm (F–I).
Figure 2 from: Jiang N, Voglmayr H, Piao C-G, Li Y (2021) Two new species of Diaporthe (Diaporthaceae, Diaporthales) associated with tree cankers in the Netherlands. MycoKeys 85: 31-56. https://doi.org/10.3897/mycokeys.85.73107
Figure 2 Diaporthe pseudoalnea from Alnus glutinosaA–C habit of conidiomata on branches D transverse section of conidiomata E longitudinal section through conidiomata F, G conidiophores and conidia H, I conidia. Scale bars: 2 mm (A), 500 μm (B, C, E), 200 μm (D), 10 μm (F–I).
Figure 1 from: Jiang N, Voglmayr H, Piao C-G, Li Y (2021) Two new species of Diaporthe (Diaporthaceae, Diaporthales) associated with tree cankers in the Netherlands. MycoKeys 85: 31-56. https://doi.org/10.3897/mycokeys.85.73107
Figure 1 Phylogram of Diaporthe resulting from a maximum likelihood analysis based on a combined matrix of ITS, cal, his3, tef1 and tub2. Numbers above the branches indicate ML bootstraps (left, ML BS ≥ 50 %) and Bayesian Posterior Probabilities (right, BPP ≥ 0.75). The tree is rooted with Diaporthella corylina. Isolates from present study are marked in blue.
Xylem hydraulics and non-structural carbohydrate contents in 15 temperate tree species
<p class="1CxSpFirst">In humid temperate forests, the occurrence of frequent freeze-thaw cycles (FTC) is a main factor limiting tree growth, as xylem embolism induced by FTC poses a serious threat to the hydraulic integrity of trees. A high resilience to hydraulic dysfunction involves the enhancement of embolism resistance and/or extra non-structural carbohydrate (NSC) inputs for restoration of an impaired hydraulic system. However, potentially negative implications of such NSC allocation on tree growth have not yet been explored.</p> <p class="1CxSpMiddle">At a temperate forest site of northeast China, we studied xylem hydraulics and NSC contents in relation to winter embolism resilience in 15 sympatric broadleaf tree species belonging to three genera with relatively high species richness, 6 <i>Acer</i> species, 5 <i>Betula</i> species and 4 <i>Populus</i> species.</p> <p class="1CxSpLast"><i>Acer</i> and <i>Betula</i> species had higher soluble sugar contents in the dormant season and indeed had higher hydraulic resilience to FTC induced embolism but slower stem growth. <i>Populus</i> species had higher NSC contents during the growing season and their faster stem growth was also consistent with higher hydraulic efficiency (Ks) and leaf photosynthetic rate.<span> The positive correlation between tree </span><span>trunk</span><span> radial growth rate and hydraulic conductivity suggests that</span><span> xylem water transport efficiency can be a fundamental basis for tree productivity due to a significant hydraulic-photosynthetic coordination</span><span>. The negative correlation between soluble sugar concentration in the dormant season and stem growth rate indicates that </span>metabolic carbon costs for enhancing hydraulic resilience may compromise tree growth during the growing season.</p> <p>Comparisons among <i>Acer</i>, <i>Betula</i> and <i>Populus</i> and the correlation analyses based on phylogenetic independent contrasts strongly support the existence of a trade-off between hydraulic resilience against FTC induced embolism and growth rate among sympatric tree species under humid temperate climate conditions. This trade-off has likely contributed to the sorting of temperate tree species and genera to different niches along environmental gradients with respect to freezing stress and interspecific competition.</p>
Do experimental drought stress and species' drought sensitivity influence herbivory in tropical tree seedlings?
<p>In tropical forests, drought and herbivory represent two potent stresses on seedlings. Climate change is expected to increase the frequency of severe droughts in many tropical forests, which may influence seedling vulnerability to herbivores if drought stress affects seedling palatability. Furthermore, contrasting selective pressures in wetter vs drier forests could mean that species well-adapted to herbivores are less drought resistant and vice versa. In this study, we measured seedling performance and herbivory in a common garden experiment where seedlings of 15 tree species were subjected to irrigation or rainfall exclusion treatments across two dry seasons in Panama. Water-manipulation had no effects on foliar herbivory during the experiment for all species combined and for 14 of the 15 focal species when analyzed separately. There was large variation among species in herbivore damage, but no relationship between the sensitivity of species to drought and the amount of herbivory they experienced. Altogether, our findings suggest that increasing drought stress is unlikely to directly alter tropical tree seedling susceptibility to herbivore attack in this forest. Additional studies are needed to determine whether drought alters tropical plant-herbivore interactions via other mechanisms, such as through changes in herbivorous insect communities and/or increases in fitness costs of herbivory.</p>
FIGURE 2 in All in all it's just another branch in the tree: A new species of Acanthocercus Fitzinger, 1843 (Squamata: Agamidae), from Angola
FIGURE 2. Holotype of Acanthocercus ceriacoi sp. nov. (CAS 258430). Photos by Erica Ely.
Figs 64-65. Megaselia vestfoldensis n in Scuttle flies (Diptera: Phoridae) from the canopies of ash trees in Norway, with six new species
Figs 64-65. Megaselia vestfoldensis n. sp. male. 64 - hind femur and tibia; 65 – wing.
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.