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932 results for “Long term data”
Data from: Environmental context shapes the long‐term role of nutrients in driving producer community trajectories in a top‐down dominated marine ecosystem
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Data for: Long-term drought reduces wildfire severity and promotes invasive species
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Ruffed grouse (Bonasa umbellus) drumming surveys, 1987-2017, Adirondack Long-Term Ecological Monitoring Program Project No. 9 by Adirondack Ecological Center of the State University of New York College of Environmental Science and Forestry, Newcomb, New York. Environmental Data Initiative
The objective is to document long-term population trends of ruffed grouse in a northern hardwood ecosystem. The survey area is the Huntington Wildlife Forest, a 6,000 ha field station which receives no hunting pressure. Routes are surveyed starting an hour prior to sunrise on 2-5 mornings each year between April 14 and May 9 (occasionally later), on days when wind and rain are minimal to absent. Counts are standardized relative to weather conditions and timing. Observers count the number of individual ruffed grouse heard drumming (""drummers"") at 32-50 route stations during a 4-minute period. Trends at stations over time as well as overall drummer index are calculated and compared to independent datasets.
Iowa Rathbun Lake long-term chemistry data conducted by US Army Corps of Engineers, 1997-2012
This dataset contains long-term water quality data for Rathbun Lake (Iowa) collected from 1997 – 2012. This dataset contains data for Secchi depth, dissolved and total nutrients, chlorophyll, total suspended sediments, turbidity, alkalinity, sulfate, and total and dissolved organic carbon. Data are also included for herbicides and trace elements.
Data for L.R. Johnson and S.N. Handel - Restoration treatments in urban park forests drive long-term changes in vegetation trajectories - Ecological Applications doi:10.1890/14-2063.1
Initial data from long-term research plots in New York City Park forest patches invaded by exotic woody plant species. Half (n = 30) of the sites were restored 15-20 years prior to first sampling in 2009-2010. The same suite of invasive plants was recorded in the other half of the sites at the time of initial restoration in the late 1980s and early 1990s (n = 30), but they were not restored in 2009-2010.
Root biomass data: Long-Term Nitrogen Deposition During Grassland Succession
The purpose of this experiment is to measure how initially disturbing an area and adding nitrogen over a long time will affect the number of species, the type of species present, the amount of annual growth, and the change from year to year in the growth of each species in a plant community which is also relieved of grazing by large and small mammals. This experiment is conducted within fields (A, B, and C) which were initially low in soil nutrients. The ground was disturbed by thoroughly disking the area prior to establishment of the experiment. There are 8 different levels of nitrogen addition with other nutrients added to ensure that nitrogen remains the limiting nutrient, and a control which receives no nutrients. Nitrogen fertilizer (NH4NO3) is applied twice per year, once in early May and once in late June. There are six replicates of each treatment per field. The treatments were randomly assigned to plots of size 4 by 4 meters. The plots are in 6 plot by 9 plot grids with 1 meter aisles between plots. The plot grids are enclosed by a fence to keep out mammalian herbivores. Gophers are trapped and removed as they appear. In the spring of 1992, subexperiments E097 and E098 were established. E097 is in fields A and C where randomly selected plots within each treatment no longer receive fertilizer. E098 is in field B where randomly selected plots within each treatment are burned. Note that the design of E002 is similar to E001 except E002 was thoroughly disked prior to establishment.
Supplementary data for the article "Ayahuasca Users in Estonia: Ceremonial Practices, Subjective Long-Term Effects, Mental Health and Quality of Life"
<p>The dataset contains qualitative data from a study of ayahuasca users in Estonia:</p> <p>Appendix 1 - Appendix 6: free-text answers (shuffled and edited for protection of confidentiality of the respondents), in Estonian.</p> <p>Appendices 7 and 8: study-specific questionnaires, in Estonian.</p> <p>The dataset provides supplementary information for the article "Ayahuasca Users in Estonia: Ceremonial Practices, Subjective Long-Term Effects, Mental Health and Quality of Life" (authors Helle Kaasik and Kairi Kreegipuu from University of Tartu, Estonia), submitted to <a href="https://www.tandfonline.com/loi/ujpd20">the Journal of Psychoactive Drugs</a> on April 30, 2019 and accepted for publication on December 3, 2019. More information about the study is available from Helle Kaasik (<a href="mailto:helle.kaasik@ut.ee">helle.kaasik@ut.ee</a>).</p> <p> </p> <p>In Estonian:</p> <p>Andmehulk sisaldab kvalitatiivseid andmeid Eesti ayahuasca kasutajate uurimisest.</p> <p>Lisa 1-6: vabatekstilised vastused (juhuslikus järjekorras ja toimetatud vastajate konfidentsiaalsuse tagamiseks);</p> <p>Lisa 7-8: uurimuses kasutatud küsimustikud.</p> <p>Andmestik on täienduseks teadusartiklile "Ayahuasca Users in Estonia: Ceremonial Practices, Subjective Long-Term Effects, Mental Health and Quality of Life", mille autorid on Helle Kaasik ja Kairi Kreegipuu Tartu Ülikoolist. Artikkel on saadetud avaldamiseks ajakirjale <a href="https://www.tandfonline.com/loi/ujpd20">Journal of Psychoactive Drugs</a>. Kommentaarid ja küsimused töö kohta on oodatud Helle Kaasiku e-mailile <a href="mailto:helle.kaasik@ut.ee">helle.kaasik@ut.ee</a></p>
Data and Code to support COVID-19 - exploring the implications of long-term condition type and extent of multimorbidity on years of life lost: a modelling study
<p>Data and code to support paper published in Wellcome Open research on years of life lost among people who died with COVID-19.</p>
Extended Data Fig. 7 in Skeleton of a Cretaceous mammal from Madagascar reflects long-term insularity
Extended Data Fig. 7 | Selected individual vertebrae of A. hui holotype (UA 9030). Thoracic (T6 and T16),lumbar (L1 and L11) and anterior caudal (Ca8) vertebrae are depicted in anterior,dorsal,left lateral and ventral views.The left transverse process of L11 is preserved but was separated from the vertebral column during preparation and has not been CT scanned.Dotted outlines represent the shape of preserved left transverse process,and the mirrored reconstructed right transverse process.
Extended Data Fig. 8 in Skeleton of a Cretaceous mammal from Madagascar reflects long-term insularity
Extended Data Fig. 8 | Limb bone elements of A. hui holotype (UA 9030). a–p, ΜCT images.a, b, Left humerus in anterior (a) and posterior (b) views. c, d, Left ulna in anterior (c) and lateral (d) views.e, f, Left radius in anterior (e) and lateral (f) views.g, h, Left manus in dorsal (g) and palmar (= ventral) (h) views.i, j, Left femur in anterior (i) and posterior (j) views.k, l, Left tibia in anterior (k) and lateral (l) views.m, n, Left fibula in anterior (m) and lateral (n) views.o, p, Left pes in dorsal (o) and plantar (= ventral) (p) views.
Extended Data Fig. 1 in Skeleton of a Cretaceous mammal from Madagascar reflects long-term insularity
Extended Data Fig. 1 | Photographs of the skeleton of A. hui holotype (UA 9030). a, b, 'Top' (a) and 'bottom' (b) views, as preserved.The left and right sides are indicated as (l) and (r), respectively.as,astragalus;at, atlas;av, anticlinal vertebra;ax,axis; C, cervical vertebra;ca,calcaneus;Ca,caudal vertebra;cap,capitate;CC,costal cartilage; cl, clavicle; cor, coracoid;cu, cuboid;dpp,distal pedal phalanx;ent, entocuneiform;ep,epipubis; fe,femur; fi, fibula;ha,hamate;hu, humerus;i, lower incisor; ID, distal upper incisor; IM, medial upper incisor;imp,intermediate manual phalanx;ipp,intermediate pedal phalanx; L, lumbar vertebra;lu, lunate; m, mandible;mc,metacarpal;mt, metatarsal;na,navicular;osc, os calcaris;pc1, lower first postcanine tooth; PC1, upper first postcanine tooth; pe,pelvis;pfi, parafibula; pi, pisiform;pmp, proximal manual phalanx;ppp,proximal pedal phalanx;R, rib; ra, radius; sc, scapula;sca,scaphoid;stb, sternebra;T,thoracic vertebra; ti, tibia;tr, triquetrum; ul, ulna.
Extended Data Fig. 6 in Skeleton of a Cretaceous mammal from Madagascar reflects long-term insularity
Extended Data Fig. 6 | Enamel microstructure of A. hui holotype (UA 9030). a–d, Scanning electron micrographs of single postcanine tooth enamel fragment sectioned in various planes.a, Transverse section of entire enamel band from the enamel–dentine junction (EDJ) to the outer enamel surface (OES) (about 0.4-mm thick) showing single layer of radial enamel and absence of distinct layer of prismless external enamel.Prism size increases from,on average,2.3 to 2.8 Μm from the enamel–dentine junction to the outer enamel surface.Prisms close to the enamel–dentine junction are intersected by interprismatic matrix at slightly higher angles than towards the outer enamel surface.b, Transverse section showing the clear distinction between enamel prisms and interprismatic matrix. c, Radial section showing radial enamel in outer zone with prisms surrounded by interprismatic matrix and some cross-sections of prisms showing tubules.d, Radial,but slightly oblique, section showing enamel of inner zone with prisms enveloped by interprismatic matrix and presence of odontoblastic processes.In this zone,crystallites of interprismatic matrix lie almost perpendicular to those of prisms.Prisms rise from the enamel–dentine junction at angle of about 45°; this angle is reduced only slightly towards the outer enamel surface.IPM, interprismatic matrix; od, odontoblastic process; p, prism; tu,tubule.
Extended Data Fig. 4 in Skeleton of a Cretaceous mammal from Madagascar reflects long-term insularity
Extended Data Fig. 4 | Inner ear of A. hui holotype (UA 9030). a, Ventral view of reconstructed cranium, with petrosal fragment bounded by red line enlarged in a'. b–e, Reconstructed cochlear canal in dorsomedial (b), ventrolateral (c) and posteroventromedial (d, e) views,with the view in d being slightly more posterior and the view in e slightly more medial.In e, only the medial aspect of cochlear canal in grey is shown, to reveal primary bony lamina and cochlear nerve foramina.Semi-transparent grey,cochlear canal;yellow, cochlear nerve;blue, secondary canal.
Extended Data Fig. 2 in Skeleton of a Cretaceous mammal from Madagascar reflects long-term insularity
Extended Data Fig. 2 | Bivariate plots of body mass estimates for A. hui. a, Relationship between cranial length and body mass in 423 extant mammals, plus estimated body mass in the gondwanatherians A.hui and Vintana sertichi. b, Relationship between cranial width and body mass in 423 extant mammals, plus the estimated body mass in A. hui and V.sertichi. c, Relationship between cranial size and body mass in 423 extant mammals,plus the estimated body mass in A.hui and V.sertichi. d, Relationship between humeral length and body mass in 187 extant therian mammals,plus the estimated body mass in A.hui. e, Relationship between femoral length and body mass in 184 extant species of therian mammal,plus the estimated body mass in A.hui. f, Relationship between stylopodial diaphyseal circumference and body mass as calculated for a sample of 245 tetrapod species45 (data points shown for mammals only, n = 200),plus the estimated body mass in A.hui. Regression lines in a–e are from ordinary least squares regressions,whereas the regression line shown in f is from a phylogenetic generalized least squares regression.Measurement data,methods and references are provided in the Supplementary Information.
Extended Data Fig. 10 in Skeleton of a Cretaceous mammal from Madagascar reflects long-term insularity
Extended Data Fig. 10 | Phylogenetic relationships of A. hui and selected mammaliaforms. Strict consensus tree of 16 equally parsimonious trees (tree length = 2,315,consistency index = 0.3015 and retention index = 0.7001) derived from analysis of 84 cynodont taxa and 530 characters,with multistate characters unordered and unweighted.Bremer values are listed next to the nodes.Adalatherium is highlighted in red.Allotheria—consisting of Cifelliodon, Euharamiyida,Gondwanatheria (including Adalatherium) and Multituberculata—is highlighted in blue.Taxon and character lists,the data matrix,limitations and assumptions,phylogenetic methods and a more detailed explanation of the results are provided in the Supplementary Information.
Extended Data Fig. 5 in Skeleton of a Cretaceous mammal from Madagascar reflects long-term insularity
Extended Data Fig. 5 | Lower jaw of A. hui holotype (UA 9030). Photographs of left dentary in left column; photographs of right dentary in right column. a, b, Lateral views.c, d, Dorsal (occlusal) views.e, f, Medial views.i, lower incisor;pc, lower postcanine tooth.
Extended Data Fig. 9 in Skeleton of a Cretaceous mammal from Madagascar reflects long-term insularity
Extended Data Fig. 9 | Pectoral and pelvic girdle elements of A. hui holotype (UA 9030). a–d, ΜCT images.a, b, Left scapulacoracoid,left and right clavicle and manubrium in 'top' (a) and 'bottom' (b) views (as preserved).c, d, Left os coxa and epipubic bone in lateral (c) and medial (d) views.
Extended Data Fig. 3 in Skeleton of a Cretaceous mammal from Madagascar reflects long-term insularity
Extended Data Fig. 3 | Cranium of A. hui holotype (UA 9030). a–e, Photographs of external surfaces of cranium in right lateral (a), left lateral (b), dorsal (c), ventral (d) and anterior (e) views.a'–e', Labelled ΜCT images of cranium in the same views as in a–e, respectively.f, Labelled ΜCT image of medial view of right side of nasal cavity.aC,alveolus for upper canine; as, alisphenoid;eo, exoccipital; fr,frontal;ID,distal upper incisor;IM,mesial upper incisor; ju, jugal; la, lacrimal;mx, maxilla; na, nasal;os/ps, orbitosphenoid/presphenoid complex;PC,upper postcanine tooth;pe, petrosal;pmx,premaxilla;pt,pterygoid;smx,septomaxilla;sq, squamosal; v,vomer.
Data from: Long-term mark-recapture and growth data for large-sized migratory brown trout (Salmo trutta) from Lake Mjøsa, Norway
<p>This data package contains two unique publicly available time series of individual-based data originating from a 51-year mark-recapture study of a land-locked population of large-sized migratory brown trout (<em>Salmo trutta</em>) in Norway: the Hunder trout. In the period 1966-2015, nearly 14,000 adult Hunder trout have been captured and individually marked during their spawning migration from Lake Mjøsa to the river Gubrandsdalslågen. Almost a third of those individuals were later recaptured alive during a later spawning run and/or captured by fishermen and reported dead or alive. This has resulted in the first data series: a mark-recapture-recovery dataset spanning half a century and more than 18,000 capture records. The second data series consists of additional data on juvenile and adult growth and life-history schedules from half of the marked individuals, obtained by means of scale sample analysis. The two datasets offer a rare long-term perspective on individuals and population dynamics and provide unique opportunities to gain insights into questions surrounding management, conservation, and restoration of migratory salmonid populations and freshwater ecosystems.<br> </p>
Data from: Fire and grazing controlling a tropical tree line: Effects of long‐term grazing exclusion in Bale Mountains, Ethiopia
<p><span><b>Aims:</b> Tropical tree lines are often associated with abrupt shifts in vegetation, soils and disturbance regimes, but the underlying mechanisms are poorly understood. We analysed the role of grazing, fuels and fire in maintaining a sharp tree line with flammable heathland above non-flammable forest. </span></p> <p><span><b>Location: </b>Bale Mountains, Ethiopia. </span></p> <p><span><b>Methods: </b>Grazing exclosures, repeated vegetation sampling, soil analyses and burning and sowing experiments along an altitudinal gradient with <i>Hagenia abyssinica</i> forest, <i>Erica trimera</i> forest and <i>Erica</i> heathland; all heavily grazed, the latter burnt on short rotation.</span></p> <p><span><b>Results:</b> Contrary to expectation, livestock exclusion did not increase forest fuel flammability, but instead resulted in a dense carpet of non-flammable herbs. In the heathland, livestock exclusion led to somewhat faster post-fire fuel recovery, but no major vegetation change. Seeding of tree species resulted in some seedling establishment, but notably <i>Hagenia</i> grew poorly in the heathland, even when protected from livestock. A bioassay, as well as observations of outpost trees on atypical soil above the treeline, suggest that this poor growth is caused by the acidic soils, rather than harsh climate. Despite frequent fires, heathland soils had lower pH and higher organic matter content than forest soils. Below the tree line,<i> </i>tree seedling establishment was successful only in forest gaps, and if livestock was excluded. In both forest and heathland rapid vegetative regeneration in the ground flora after disturbance restricted major species shifts. </span></p> <p><b>Conclusions:</b> These results suggest that the contrasting fire potential between heathland and forest, and thus the sharp tree line would be maintained, or possibly even accentuated, in the absence of livestock grazing, and that <i>Hagenia</i> colonisation upwards into the heathland is restricted not only by fire and grazing, but also the acidic soils, a legacy of centuries of <i>Erica</i> dominance.</p>
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.