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11 results for “Scattered trees”
360° video (repo 2) of ancient oak trees from the SCATTER project
<p>This repository contains Insta360 video data recorded of ancient oak trees and surrounds as part of the <a href="https://doi.org/10.5281/zenodo.11658042">SCATTER project</a>.</p> <p>See <a href="https://zenodo.org/records/11658042">https://zenodo.org/records/11658042</a> for a list of trees and other available datasets. See <a href="https://zenodo.org/records/12543267">https://zenodo.org/records/12543267</a> for additional videos.</p> <p>Individual videos were processed with Insta360 Studio and exported in .mp4 format. </p> <h2>Funding, licence and usage</h2> <p>This research was funded by the Woodland Trust Conservation Research Programme. By accessing or using this dataset, you agree to the terms of the relevant licence agreement(s). You will ensure that this dataset is cited in any publication that describes research in which the data have been used.</p>
Mobile phone video of individual ancient oak trees stems from the SCATTER project
<p>This repository contains video data recorded of tree stems as part of the <a href="https://doi.org/10.5281/zenodo.11658042">SCATTER project</a>.</p> <p>See <a href="https://zenodo.org/records/11658042">https://zenodo.org/records/11658042</a> for a list of trees and other available datasets. </p> <p>Individual video files are in .mp4 format and were recorded with a Google Pixel 7 phone. </p> <h2>Funding, licence and usage</h2> <p>This research was funded by the Woodland Trust Conservation Research Programme. By accessing or using this dataset, you agree to the terms of the relevant licence agreement(s). You will ensure that this dataset is cited in any publication that describes research in which the data have been used.</p>
360° video (repo 1) of ancient oak trees from the SCATTER project
<p>This repository contains Insta360 video data recorded of ancient oak trees and surrounds as part of the <a href="https://doi.org/10.5281/zenodo.11658042">SCATTER project</a>.</p> <p>See <a href="https://zenodo.org/records/11658042">https://zenodo.org/records/11658042</a> for a list of trees and other available datasets. See <a href="https://zenodo.org/records/12580682">https://zenodo.org/records/12580682</a> for additional videos.</p> <p>Individual videos were processed with Insta360 Studio and exported in .mp4 format. </p> <h2>Funding, licence and usage</h2> <p>This research was funded by the Woodland Trust Conservation Research Programme. By accessing or using this dataset, you agree to the terms of the relevant licence agreement(s). You will ensure that this dataset is cited in any publication that describes research in which the data have been used.</p>
Linking animal behaviour and tree recruitment: Caching decisions by a scatter hoarder corvid determine seed fate in a Mediterranean agroforestry system
<p><span>1. Seed dispersal by scatter-hoarder corvids is key for the establishment of important tree species from the Holarctic region such as the walnut (<em>Juglans regia</em>). However, the factors that drive animal decisions to cache seeds in specific locations and the consequences of these decisions on seed fate are poorly understood. </span></p> <p><span>2. We experimentally created four distinct, replicated habitat types in a Mediterranean agricultural landscape where the Eurasian magpie (<em>Pica</em> <em>pica</em>) is a common scatter-hoarder: soft bare soil; compacted bare soil; compacted soil with a dense herbaceous cover; and soft linear bare soil made up of the irrigation furrows that separated the rest of the treatments. We also experimentally placed visual landmarks (stones, sticks, and bunches of dry plants) to test if magpies use them to place seed caches. Walnut dispersal from feeders to the habitats was monitored by radio-tracking and camera traps. </span></p> <p><span>3. A sowing experiment simulating natural caches tested the effect of caching type on seed germination and seedling emergence. Seed mass was controlled for the dispersal and sowing experiments.</span></p> <p><span>4. Magpies selected the two habitats with soft soil, and avoided the one with compacted soil, to cache nuts. Seed mass did not affect dispersal distance, germination, or emergence; however, heavier seeds were cached more often under litter and in the habitat with herbaceous cover, whereas lighter seeds were more often buried in the soft bare soil habitat. Seed burial under soil or litter determined seed fate, as there was virtually no emergence from unburied nuts. There was no evidence of any effect of the visual landmarks.</span></p> <p>5. Synthesis. The consequences of seed caching for seedling early establishment are driven by a fine decision-making process of the disperser. Magpies seemed to ponder the characteristics of the habitat and the seed itself to determine where and how to cache each nut. By doing so, magpies reinforced the quality of seed dispersal effectiveness, as they cached walnuts in locations that enhanced both seed survival and seedling emergence.</p>
Truly ubiquitous CRESS DNA viruses scattered across the eukaryotic tree of life
<p>Until recently, most viruses detected and characterized were of economic significance, associated with agricultural and medical diseases. This was certainly true for the eukaryote-infecting circular Rep (replication-associated protein)-encoding single-stranded DNA (CRESS DNA) viruses, which were thought to be a relatively small group of viruses. With the explosion of metagenomic sequencing over the past decade and increasing use of rolling-circle replication for sequence amplification, scientists have identified and annotated copious numbers of novel CRESS DNA viruses – many without known hosts but which have been found in association with eukaryotes. Similar advances in cellular genomics have revealed that many eukaryotes have endogenous sequences homologous to viral Reps, which not only provide "fossil records" to reconstruct the evolutionary history of CRESS DNA viruses but also reveal potential host species for viruses known by their sequences alone. The Rep protein is a conserved protein that all CRESS DNA viruses use to assist rolling circle replication that is known to be endogenized in a few eukaryotic species (notably tobacco and water yam). A systematic search for endogenous Rep-like sequences in GenBank's non-redundant eukaryotic database was performed using tBLASTn. We utilized relaxed search criteria for the capture of integrated Rep sequence within eukaryotic genomes, identifying 93 unique species with an endogenized fragment of Rep in their nuclear (78 species), plasmid (1 species), mitochondrial (6 species) or chloroplast (8 species) genomes. These species come from 19 different phyla, scattered across the eukaryotic tree of life. Exogenous and endogenous CRESS DNA viral Rep tree topology suggested potential hosts for one family of uncharacterized viruses and supports a primarily fungal host range for genomoviruses.</p>
Truly ubiquitous CRESS DNA viruses scattered across the eukaryotic tree of life
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Linking animal behaviour and tree recruitment: Caching decisions by a scatter hoarder corvid determine seed fate in a Mediterranean agroforestry system
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Data from: The importance of scattered trees for biodiversity conservation: a global meta-analysis
1. Scattered trees are thought to be keystone structures for biodiversity in landscapes worldwide. However, such trees have been largely neglected by researchers and their importance for biodiversity remains unclear. 2. We completed a global meta-analysis to quantify relationships between scattered trees and the species richness, abundance and composition of vertebrates, arthropods and plants. First, we tested whether areas near scattered trees support higher levels of species richness and abundance than nearby open areas. Second, we compared levels of species richness and abundance in matrix areas with scattered trees and areas embedded within nearby habitat patches. We also compared the composition of biological communities inhabiting habitat patches, open areas and areas with scattered trees. 3. A total of 62 studies contained suitable data for our quantitative analyses. The local abundance of arthropods, vertebrates and woody plants was 60-430% greater and overall species richness was 50-100% higher in areas with scattered trees than in open areas. Conversely, for herbaceous plants, there was no consistent relationship between species abundance and the occurrence of scattered trees, although species richness was, on average, 43% lower. 4. The abundance and richness of all taxonomic groups was similar in matrix areas supporting scattered trees and habitat patches, although the species richness of epiphytes was, on average, 50% higher in habitat patches. Communities inhabiting habitat patches were more similar in composition to the communities inhabiting areas with scattered trees, and less similar to the communities of open areas. 5. Synthesis and applications. Areas with scattered trees support greater levels of biodiversity than open areas, as well as communities that are more similar to those inhabiting habitat patches. Scattered trees can be regarded as keystone structures for vertebrates, arthropods and terrestrial plants in landscapes worldwide. The maintenance of scattered trees may be compatible with livestock grazing in some agricultural landscapes. Greater management effort and targeted, long-term policies are needed to retain or re-establish scattered trees in many farming landscapes in both forest and non-forest biomes around the world.04-May-2017
Data from: The importance of scattered trees for biodiversity conservation: a global meta-analysis
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Data from: Colonization of weakened trees by mass-attacking bark beetles: no penalty for pioneers, scattered initial distributions and final regular patterns
Bark beetles use aggregation pheromones to promote group foraging, thus increasing the chances of an individual to find a host and, when relevant, to overwhelm the defences of healthy trees. When a male beetle finds a suitable host, it releases pheromones that attract potential mates as well as other "spying" males, which results in aggregations on the new host. To date, most studies have been concerned with the use of aggregation pheromones by bark beetles to overcome the defences of living, well-protected trees. How insects behave when facing undefended or poorly defended hosts remains largely unknown. The spatio-temporal pattern of resource colonization by the European eight-toothed spruce bark beetle, Ips typographus, was quantified when weakly defended hosts (fallen trees) were attacked. In many of the replicates, colonization began with the insects rapidly scattering over the available surface and then randomly filling the gaps until a regular distribution was established, which resulted in a constant decrease in nearest-neighbour distances to a minimum below which attacks were not initiated. The scattered distribution of the first attacks suggested that the trees were only weakly defended. A minimal theoretical distance of 2.5 cm to the earlier settlers (corresponding to a density of 3.13 attacks/dm²) was calculated, but the attack density always remained lower, between 0.4 and 1.2 holes/dm², according to our observations.
Data from: Colonization of weakened trees by mass-attacking bark beetles: no penalty for pioneers, scattered initial distributions and final regular patterns
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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.