Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
470
datasets available to search
ShareScore release 0.9.0
Dataset results
470 results for “dead”
UCSB SONGS Mitigation Monitoring: Reef Process Study - Density of Giant Kelp Recruits and Cover of Dead Holdfasts
These data describe annual estimates of the density of giant kelp recruits and the percent cover of dead giant kelp holdfasts from replicate quadrats at three subtidal reefs. Data collection occurred from 2000 -2023 at an artificial reef (Wheeler North Reef in Orange County, CA) and two natural reference reefs (San Mateo Kelp in Orange County, CA and Barn Kelp in San Diego County, CA) to evaluate the ability of Wheeler North Reef to compensate for losses of kelp forest habitat and associated biota caused by the operation of the San Onofre Nuclear Generating Station (SONGS).
Size and composition of all live and dead trees and large shrubs across a compositional gradient of intermediate-aged and mature forest stands within Interior Alaska collected 2008-2011.
This dataset includes snag biomass data for intermediate-aged (20-59 yr old) and mature (60+ yr old) boreal forest stands across interior Alaska. Data from intermediate-aged stands was published in Alexander et al. 2012.
Far northeastern Siberia boreal forest data: Larch tree snag (dead tree) size distribution across a density gradient
This dataset includes basal diameter (bd) or diameter at breast height (DBH) of dead larch trees (snags) within four stands near Cherskii, Siberia. Data have not been published.
Annual aspen growth (basal area increment; BAI) of 84 aspen that were alive and 76 that were dead when sampled in 2016 from 22 plots (eight sites) that are a part of the Cooperative Alaska Forest Inventory (CAFI)
This dataset contains basal area increment (BAI) chronologies of 84 aspen the were alive and 76 that were dead in 2016. Live trees were cored and dead trees felled in 2016 across 22 plots (eight sites) that are a part of the Cooperative Alaska Forest Inventory (CAFI). Chronologies of BAI extend as far back as 1901 and up to 2015.
Tree characteristics of 84 aspen that were alive and 76 that were dead when sampled in 2016 from 22 plots (8 sites) that are a part of the Cooperative Alaska Forest Inventory (CAFI)
This dataset contains diameter at breast height (DBH) in 2016 and 1997, canopy position in 2016, last year of full growth, year of death, year established, age at last year of full growth, and age at year of death of 84 aspen that were alive and 76 that were dead in 2016 from 22 plots (8 sites) that are a part of the Cooperative Alaska Forest Inventory (CAFI).
An index of morphological and orthographic variation at the lexical level in the Hebrew Bible and the larger Dead Sea Scrolls: Version 1
<p>An index of morphological and orthographic variation at the lexical level in the Hebrew Bible and the larger Dead Sea Scrolls.</p> <p> </p> <p>Please cite the following article when referring to this dataset:</p> <p>Johan de Joode. 2020. "Digital Masorah: Toward an Index of Orthographic and Morphological Variation at the Lexical Level". Journal for Semitics VOL (ISSUE). https://doi.org/10.25159/2663-6573/6632.</p> <p> </p> <p>This data is also accessible on Github: https://github.com/jdejoode/orthomorphindex-JSEM</p>
Data from: Historical demography of four gecko species specializing in boulder cave habitat – its implications in the evolutionary dead end hypothesis and conservation
Specialization in narrow ecological niches might not only help species to survive in competitive or unique environments but also contribute to their extermination over evolutionary time. Although the "evolutionary dead end" hypothesis has long been debated, empirical evidence from species with detailed information on niche specialization and evolutionary history is still rare. Here we used a group of four closely related Cnemaspis gecko species that highly depend on granite boulder caves in the Mekong Delta to illuminate the potential impact of ecological specialization on their evolution and population dynamics. Isolated by the unsuitable habitat of a flood plain, these boulder-dwelling geckos are among the most narrowly distributed Squamata species in the world. We applied several coalescence-based approaches combined with the RAD-seq technique to estimate their divergence times, gene flow and demographic fluctuations during the speciation and population differentiation processes. Our results showed long-term population shrinkage in the four geckos and limited gene flow during their divergence. The results suggest that the erosion and fragmentation of the granite boulder hills have had great impacts on these populations' divergences and population declines. We argue that the specialist gecko's habitat specialization has facilitated the fine-scaled speciation in these granite rocky hills; in contrast, specialization might also have pushed these species toward the edge of extinction. Our study also emphasizes the conservation urgency of these vulnerable, cave-dependent geckos.
Deadly dormmate: a case study on Bungarus candidus living among a student dormitory with implications for human safety
<p>Movement and observation data gained through radio-telemetry of a single Malayan krait (<em>Bungarus candidus</em>) among a suburban landscape (a university dormitory complex) in NE Thailand. Included: movement spatial data .csv file and photographic evidence of foraging observations, a predation events, and conflicts with humans, camera trap footage, and snakebite incident data .csv file.</p> <p> </p> <p>B.candidus_observation_data.csv file column headings:</p> <p>folderID: The Zenodo folder ID containing the photographic evidence of events.</p> <p>obvdate: Date of observation (mm/dd/yyyy)</p> <p>obvtime: Time of observation (24hr)</p> <p>easting_utm: UTM easting (UTM Zone 48N; Datum WGS84)</p> <p>northing_utm: UTM northing (UTM Zone 48N; Datum WGS84)</p> <p>gps_accuracy: Accuracy of GPS location (m)</p> <p>notes: Comments and details on events/observations</p> <p> </p> <p>BUCA28_movement_data.csv file column headings:</p> <p>Datetime: Date and time when the snake was located (mm/dd/yyyy hh:mm)</p> <p>Easting: UTM easting (UTM Zone 48N; Datum WGS84)</p> <p>Northing: UTM northing (UTM Zone 48N; Datum WGS84)</p> <p>Behavior: Either the animal’s behavior observed during the location check (sheltering, foraging, or feeding) or type of other significant locations (capture or release sites)</p> <p>Habitat_Type: Land-use type where the snake was located</p> <p> </p> <p>Snakebite_incident_data_SUT_Dormitories.csv file column headings:</p> <p>Date: Date the snakebite occurred was located (mm/dd/yyyy)</p> <p>Time: Time (ICT) the snakebite occurred (hh:mm)</p> <p>Location: Brief location description where the incident occurred at Suranaree University of Technology</p> <p>Mesohabitat Description: Brief description of the scene where the bite occurred</p> <p> Snake species confirmed?: if responsible species known (Yes) or unknown (No)</p> <p>Snake Species: Identified responsible snake species (if known)</p> <p>If not confirmed, suspected species responsible: Species most likely to be responsible based on known snake species at SUT, the time the bite occurred, and bite symptoms.</p> <p>Bite Location: Where on the body the victim was bitten</p> <p>Envenomation Symptoms: Brief description of bite symptoms (note: none were severe/dangerous cases)</p> <p>Fang Puncture Marks?: Brief description of whether fang puncture marks were visible, and if so, how many punctures</p> <p>Notes and Photos: Brief further notes on how the bite occurred, and in the case of the bite by C. maculiceps, the corresponding Zenodo folder ID containing the photographic evidence (of the snake and dormitory bite location [during daylight]).</p> <p> </p> <p> </p>
Data from: Differing thermal sensitivities in a host-parasitoid interaction: high, fluctuating developmental temperatures produce dead wasps and giant caterpillars
<p>1. Insect parasitoids, and the arthropod hosts they consume during development, are important ecological players in almost all environments across the globe. As ectothermic organisms, both parasitoid and host are strongly impacted by environmental temperature. If thermal tolerances differ between host insect and parasitoid, then the outcome of their interaction will be determined by the ambient temperature. As mean temperatures continue to rise and extreme temperatures become more frequent, we must determine the effect of high temperature stress on host-parasitoid systems to predict how they will fare in the face of climate change.</p> <p class="MsoNoSpacingCxSpMiddle">2. The majority of studies conducted on host-parasitoid systems focus on either performance under constant temperature, or a fixed metric of thermal tolerance (CT<sub>max</sub>) for individual organisms. However, performance at constant temperatures is not predictive of performance under ecologically relevant, fluctuating temperatures, and measurements of thermal thresholds provide little information regarding the effects of temperature throughout development. We address this by testing the effects of increasing mean temperature in both constant and fluctuating (±10°C) environments throughout development on the performance of the parasitoid wasp <i>Cotesia congregata</i> and its lepidopteran larval host, <i>Manduca sexta.</i></p> <p class="MsoNoSpacingCxSpLast">3. The growth of <i>M. sexta</i> was influenced by mean temperature, diurnal fluctuations, and parasitization status. Caterpillar growth rate increased with increasing mean temperature, but decreased in response to diurnal fluctuations and parasitization by <i>C. congregata </i>wasps.</p> <p>4. Wasp survival decreased with increasing mean temperature, and diurnal fluctuations decreased wasp survival, especially at higher mean temperatures. Diurnal fluctuations at our highest mean temperature treatment (30°C±10°C) resulted in complete wasp mortality, and parasitized hosts displayed abnormal physiology, wherein they failed to exhibit wasp emergence, did not enter the prepupal stage, continued to feed, and grew up to two-fold larger than a normal, unparasitized caterpillar.</p> <p>5. Our results indicate hosts and parasitoids in this system have different thermal tolerances during development; the parasitoid wasp suffered complete mortality at a temperature regime that is mildly stressful for the unparasitized caterpillar host species. Our findings suggest <i>C. congregata </i>will suffer more severely under increasing temperatures than <i>M. sexta</i>, with cascading trophic and ecological effects.</p>
Dead litter of resident species first facilitates and then inhibits sequential life stages of range-expanding species
<p>1. Resident species can facilitate invading species (biotic assistance) or inhibit their expansion (biotic resistance). Species interactions are often context-dependent and the relative importance of biotic assistance versus resistance could vary with abiotic conditions or the life stage of the invading species, as invader stress tolerances and resource requirements change with ontogeny. In northeast Florida salt marshes, the abundant dead litter (wrack) of the native marsh cordgrass, <em>Spartina alterniflora</em>, could influence the expansion success of the black mangrove, <em>Avicennia germinans</em>, a tropical species that is expanding its range northward.</p> <p>2. We used two field experiments to examine how <em>S. alterniflora</em> wrack affects <em>A. germinans</em> success during 1) propagule establishment and 2) subsequent seedling survival. We also conducted laboratory feeding assays to identify propagule consumers and assess how wrack presence influences herbivory on mangrove propagules.</p> <p>3. <em>S. alterniflora</em> wrack facilitated <em>A. germinans </em>establishment by promoting propagule recruitment, retention, and rooting; the tidal regime influenced the magnitude of these effects. However, over time <em>S. alterniflora</em> wrack inhibited <em>A. germinans</em> seedling success by smothering seedlings and attracting herbivore consumers. Feeding assays identified rodents – which seek refuge in wrack – as consumers of<em> A. germinans </em>propagules.</p> <p>4. Synthesis: Our results suggest that the deleterious effects of <em>S. alterniflora</em> wrack on <em>A. germinans</em> seedling survival counterbalance the initial beneficial effects of wrack on <em>A. germinans</em> seed establishment. Such seed-seedling conflicts can arise when species stress tolerances and resource requirements change throughout development and vary with abiotic conditions. In concert with the tidal conditions, the relative importance of positive and negative interactions with wrack at each life stage can influence the rate of local and regional mangrove expansion. Because interaction strengths can change in direction and magnitude with ontogeny, it is essential to examine resident-invader interactions at multiple life stages and across environmental gradients to uncover the mechanisms of assistance and resistance during invasion.</p>
Data from: Environmental conditions alter successional trajectories on an ephemeral resource: a field experiment with beetles in dead wood
<p>Successional processes can be observed for many organisms and resources, but most studies of succession have focused on plants. A general framework has been proposed, advocating that successional patterns in species turnover are predominantly driven by competition, dispersal or abiotic limitation, and that the patterning of species accumulation over time gives clues to which process is most influential in a given system. We applied this framework to succession in communities of wood-living beetles, utilizing ephemeral resources in the form of 60 experimentally created dead aspen high stumps. High stumps were created at sun-exposed sites (high ambient temperature; favorable abiotic conditions) and shaded sites (low ambient temperature; abiotically limiting conditions). The sites were intermixed, ensuring similar dispersal opportunities. Beetle species richness and abundance were monitored with flight interception traps over four consecutive years. Consistent with predictions from the tested framework, several beetle functional groups accumulated species more slowly at the unfavorable shaded sites than at the favorable exposed sites. Species richness at the exposed sites increased rapidly to a plateau, consistent with a limiting effect of competition on community development. Similar results were obtained for beetle abundance and community structure. Part of the variance in beetle community structure was jointly explained by habitat and fungal community composition, suggesting that differences in the composition and developmental rate of fungal communities in the two habitats contributed to the observed patterns. Targeted experimental studies are now required to decisively establish what processes underlie the contrasting successional trajectories in the two environments.</p>
Data from: Testing for human impacts in the mismatch of living and dead ostracode assemblages at nested spatial scales in subtropical lakes from the Bahamian archipelago
Naturally time-averaged accumulations of skeletal remains – death assemblages – provide reliable, albeit temporally coarse, information on the species composition and structure of communities in diverse settings, and their mismatch with local living communities usually signals recent human-driven ecological change. Here, we present the first test of live-dead mismatch as an indicator of human stress using ostracodes. On three islands along a gradient of human population density in the Bahamas, we compared the similarity of living and death assemblages in ten lakes with relatively low levels of human stress to live-dead similarity in eleven physically comparable lakes subject to industrial, agricultural, or other human activities currently or in the past. We find that live-dead agreement in pristine lakes is consistently excellent, boding well for using death assemblages in modern-day and paleolimnological biodiversity assessments. In most comparison of physically-similar paired lakes, sample-level live-dead mismatch in both taxonomic composition and species' rank-abundance is on average significantly greater in the stressed lake; live-dead agreement is not lower in all samples from stressed lakes, but is more variable. When samples are pooled for lake-level and island-level comparisons, stressed lakes still yield lower live-dead agreement but the significance of the difference with pristine lakes decreases – species that occur dead-only (or alive-only) in one sample are likely to occur alive (or dead) in other samples. Inter-island differences in live-dead agreement are congruent with, but not significantly correlated with, differences in human population density. This situation arises from heterogeneity in the timing and magnitudes of stresses and in the extent of post-stress recovery. Live-dead mismatch in ostracode assemblages thus may be a reliable indicator of human impact at the sample-level with the potential to be a widely-applicable tool for identifying impacted habitats, and perhaps, monitor the progress of their recovery.
In Memory Of The Dead In The Great War
In Memory Of The Dead In The Great War - city Tondela country Portugal Source: Objaverse 1.0 / Sketchfab
The Walking Dead Comic Issue 1 (Animated)
Issue 1 is the first and the debut issue of Image Comics' The Walking Dead and the first part of Volume 1: Days Gone Bye. It was originally published on October 8, 2003. It was re-released in full color on October 9, 2013 as a special edition to celebrate the tenth anniversary of The Walking Dead. An artist proof edition was released on August 26, 2015. Info Link: https://walkingdead.fandom.com/wiki/Issue_1 I have a Patreon Join now! :https://www.patreon.com/user?u=14434838 Source: Objaverse 1.0 / Sketchfab
The Dead Christ
Located in the Dayton Art Museum. Compiled from burst photos with a Samsung Galaxy. c. 1500 Marble Museum purchase with funds provided by the 1971 Associate Board Art Ball and Virginia V. Blankeney Endowment, 1970.29. More information at daytonart.mobi/43 Source: Objaverse 1.0 / Sketchfab
Dead Sea - Israel, West Bank, and Jordan
The Dead Sea is a salt lake bordered by Jordan to the east and Israel and the West Bank to the west. It lies in the Jordan Rift Valley, and its main tributary is the Jordan River. Its surface and shores are 1,410.8 feet below sea level, making for Earth's lowest elevation on land. Source: Objaverse 1.0 / Sketchfab
Dead By Daylight - Meg Thomas (DBD)
Meg Thomas is a girl from a Survival Multiplayer Horror Game called Dead By Daylight. Shes one of the Survivors. Source: Objaverse 1.0 / Sketchfab
Dead mammal walking: a month-long march by a bison (Bison bison) after an ungulate-vehicle collision
<p>Globally, ungulate-vehicle collisions (UVC) are a major human safety concern and may also represent a significant source of mortality for some ungulate populations. However, records of UVC based on counts of roadside carcasses or reports by drivers involved in these incidents are assuredly underestimated because not all ungulates struck die immediately or at the roadside or are reported by drivers or authorities. Here, we provide an observation and analysis of the movements of a GPS-collared bison (<em>Bison bison</em>) that was involved in a UVC on the Alaska Highway and died in thick boreal forest 29 days later. During that time she moved 49.7 km from where she was hit. Her daily movement rate (km/hr) and daily net displacement (km/day) were significantly greater in the 29-day period before she was struck compared to 29 days afterward. This vivid example illustrates that individuals injured in a UVC can die several weeks later and at a considerable distance from where they were initially struck. Moreover, when they eventually die it may be where their carcass would not be found or associated with a UVC. Bison are the largest land mammal in North America and perhaps more robust to some lower-impact UVC than smaller-bodied species. Even so, if not for the GPS collar on this bison, we would have never known the fate of this individual, and the carcass likely never found. Taken together, the movements and final resting place of this bison illuminate how estimates of mortality as a result of UVC can be underestimated when the animal does not die immediately and in a location where it can be found. Given our data, we further urge managers to consider roadside counts of animals killed in UVC as a minimum estimate when considering options for mitigation.</p>
Data from: "Dead birds flying": Can North American rehabilitated raptors released into the wild mitigate anthropogenic mortality?
<p>As the human footprint expands to meet societal energy needs, so do the impacts on wildlife. Raptors in particular are highly susceptible to anthropogenic caused mortality. Industry sectors are encouraged to offset these causes of mortality. Several options to mitigate these losses have been proposed, including raptor rehabilitation. However, its role as a conservation tool is untested. Currently, no peer-reviewed demographic analyses exist using post-release data from rehabilitated raptors to evaluate its effectiveness at continental scales. Our objectives were to estimate annual survival of rehabilitated and wild raptors, and then use those estimates in demographic models to assess potential effects at individual and population levels. We hypothesized that rehabilitated raptors would survive similarly to their wild counterparts after an acclimation period, and that longer-lived species (<em>K-</em>selected) would benefit most from these releases. We used U.S. Geological Survey Bird Banding Lab band-recovery data (1974 – 2018) from 20 raptor species for modeling survival of rehabilitated individuals (<em>n </em>= 125,740) in comparison to wild birds (<em>n </em>= 1,913,352). Results from 17 species with adequate recovery data indicated that 5 species rehabilitated ≠ wild survival, 2 species had uncertain estimates, and 10 species rehabilitated ≈ wild survival by years 2 and 3 post-release. We acquired admission (<em>n </em>= 69,707) and release (<em>n = </em>25,740) data from 24 rehabilitation centers across the U.S. (2012-2021). We integrated survival, fecundity, and numbers of releases into demographic models. These models quantified the extent to which rehabilitated raptors may contribute to broader conservation efforts, especially in the context of individual take. All but two species had measurable numbers of individuals added to the population regardless of the number of releases. The general pattern was for <em>K</em>-selected species to yield larger benefits from rehabilitated supplementation to the population. These results provide evidence that rehabilitation may serve as a mitigation tool to offset incidental take.</p>
Fig. 3 in Dead wood modifies mobility of ground beetles
Fig. 3. The rate of marked individual recapture inside the fenced plots DW and C
ScienceDex guides
Understand access before you commit
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.