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70 results for “Tree height”
Data from: Tropical trees in a wind-exposed island ecosystem: height-diameter allometry and size at onset of maturity
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Nesting success and nesting height in the critically endangered Medium Tree Finch (Camarhynchus pauper)
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Nonlinear Height-DBH model analysis for three tropical tree species in Mt. Makiling, Philippines
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Data from: Shoot growth of woody trees and shrubs is predicted by maximum plant height and associated traits
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Tree regeneration after fire: Aspen removal experiment, Aspen stem numbers, biomass and canopy height
This research was intended to address the general question of whether asexual stem regeneration of trembling aspen (Populus tremuloides Michx.) reduces rates of establishment and growth of potential invading conifer species during the initial years following fire. Interactions between aspen and conifers were studied under natural conditions in a burned aspen stand with a high potential for aspen re-sprouting. The study contributes to our understanding of whether competitive interactions between tree seedlings are likely to help maintain deciduous stands across disturbance cycles by reducing the potential for successful conifer establishment. Includes measurements of aspen stem numbers, biomass and canopy height in clipped and control plots, for samples in 2000 (start of the experiment) and 2002 (experiment harvest on August 16, 2002).
Trees_height_area1
<p>Trees height was derived from remote sensing data (Pleiades images) and DSM and DTM</p>
Trees_height_area2
<p>Trees height was derived from remote sensing data (Pleiades images) and DSM and DTM</p>
Figure 1 in The limits to tree height
Figure 1 Variation with height in physiological and structural features of redwood trees at Humboldt Redwoods State Park, California. a, Xylem pressure of small branches measured at predawn (upper group) and midday (lower group) during September and October 2000. The upper line is the expected gravitational pressure gradient with the same y-intercept as the average of the 5 trees. b, Leaf mass:area ratio (g m22) of secondyear internodes increases with height. c, Foliar carbon isotope composition (d13C, ‰) increases with height within the crowns of 5 trees over 110 m tall and among the tops (filled circles) of 16 trees from 85 to 113 m tall. d, Light-saturated photosynthetic rate per unit mass (nmol CO g21 s21) decreases with height. The regression line is fitted to data 2 from six trees. Different symbol types denote different trees and are consistent for a–d.
LBA-ECO ND-02 Secondary Forest Tree Heights and Diameters, Para, Brazil: 1999-2005
Understanding secondary successional processes in Amazonian terrestrial ecosystems is becoming increasingly important as continued deforestation expands the area that has become secondary forest, or at least has been through a recent phase of secondary forest growth. Most Amazonian soils are highly weathered and relatively nutrient poor, but the role of nutrients as a factor determining successional processes is unclear. Soils testing and chronosequence studies have yielded equivocal results regarding the possible role of nutrient limitation. The objective of this paper is to report the first two years' results of a nitrogen (N) and phosphorus (P) fertilization experiment in a 6-yr-old secondary forest growing on an abandoned cattle pasture on a clayey Oxisol. Growth of remnant grasses responded significantly to the N + P treatment, whereas tree biomass increased significantly following N-only and N + P treatments. The plants took up about 10% of the 50 kg P/ha of the first year's application, and recovery in soil fractions could account for the rest. The trees took up about 20% of the 100 kg N/ha of the first year's application. No changes in soil inorganic N, soil microbial biomass N, or litter decomposition rates have been observed so far, but soil faunal abundances increased in fertilized plots relative to the control in the second year of the study. A pulse of nitric oxide and nitrous oxide emissions was measured in the N-treated plots only shortly after the second year's application. Net N mineralization and net nitrification assays demonstrated strong immobilization potential, indicating that much of the N was probably retained in the large soil organic-N pool. Although P availability is low in these soils and may partially limit biomass growth, the most striking result of this study so far is the significant response of tree growth to N fertilization. Repeated fire and other losses of N from degraded pastures may render tree growth N limited in some young Amazonian forests. Changes in species composition and monitoring of long-term effects on biomass accumulation will be addressed as this experiment is continued.
Tree Cover and Canopy Height median data of the Western Ghats, India
<p>The dataset encompasses median values for Tree cover (Hansen Global Forest Change v1.9 (2000-2021)) and Canopy height ( Global Forest Canopy Height, GEDI_V27), measured at a 30-meter resolution, across 25 protected areas in the Western Ghats of India. To provide a detailed analysis, the data is further segmented into eight distinct slope aspects characterized using Shuttle Radar Topography Mission (SRTM) data with 30 m resolution, allowing for a comprehensive understanding of how tree cover and canopy height vary across different topographical features. Additionally, the dataset includes median values computed for various slope and elevation ranges for different aspects, offering insights into how these factors influence vegetation characteristics in each protected area.</p>
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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.