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18,658 results for “impacts”
Does artificial feeding impact neonate growth rates in a large free-ranging mammal?
<p>Variation and disparity in resource access between individuals in an animal population require attention within human-dominated landscapes where artificial selection processes may be at work. Independent, recreational human-wildlife feeding interactions constitute an increasingly prevalent yet understudied food resource for birds and mammals living in our cities, but only a limited number of risk-taking individuals may access it. Using urban fallow deer as our model species, we hypothesised that if these interactions result in positive effects for the engaging individual, e.g. increased milk quality and yield, then this would result in the increased growth rates of their offspring. Alternatively, if these individuals were prioritising investing time in engagement with humans, resulting in decreased maternal care, then this would result in slower growth rates in offspring. We found that the offspring of those females that regularly interacted with humans displayed significantly faster growth rates than the risk-avoider counterparts. This advantage for fearless mothers in terms of boosted neonatal growth rates could be mirrored in birds accessing garden feeders, seagulls or pigeons utilizing urban resources, or seals approaching city harbours. Here, we add a new piece to the complex puzzle of how humans are manipulating wildlife living within human-dominated landscapes.</p>
Dataset 2 for the reproduction of figures used in "High-resolution, basin-scale simulations reveal the impact of intermediate zonal jets on the Atlantic oxygen minimum zones""
<p>This is the second dataset with data necessary for the reproduction of the figures used in the manuscript.</p> <p> </p>
Montreal Protocol's impact on the ozone layer and climate
<p>These are the datasets used for the paper: Montreal Protocol's impact on the ozone layer and climate</p>
Seismic analysis of the detachment and impact phases of a rockfall and application for estimating rockfall volume and free-fall height
<p>Digital Elevation models of the Mount Granier and Mount Saint-Eynard.</p> <p>Mount Saint-Eynard DEMs were carried out using an Optech Ilris-LR laser scanner.</p> <p>Mount Granier DEMs were carried out by photogrammetry.</p> <p> </p>
Impact Broken Point, SJ13_75
Impact broken point, North Florida, Archaic (6200-5200 ya) Part of the Coontie Island Collection, SJ13_75 Model by Emma Dietrich This model was made using RealityCapture software by Capturing Reality Source: Objaverse 1.0 / Sketchfab
Behavioural Impact of Enclosure Relocation on Asiatic Elephants (Elephas maximus) in Artis Royal Zoo, Amsterdam.
<p>It can have negative consequences when the standards of well-being of animal are not met in a captive environment. The main priority of this study was to determine whether a more enriched enclosure could reduce stereotypic behaviour and increase natural behaviours in captive Asiatic elephants, and thus increase well-being. In order to answer this question the Asiatic elephants in Artis Royal Zoo were studied. Artis Royal Zoo had built a new enclosure to improve the well-being of their elephants. Activity budgets of the three elephants of both the new and old enclosure were studied. Observation was done over a period of three months ,between April 2017 and July 2017 for a total of 26 days. Only Thong-Thai, mother of Yindee and Sanuk, exhibited stereotypic behaviour. There was a significant difference found between the stereotypic behaviour averages per enclosure when consume/forage behaviour and enclosures were included in the model. Both Thong-Thai and Yindee reduced their consume/foraging behaviour when relocated. All three elephants increased in walking behaviour when relocated with a maximum difference exhibited by Yindee. Only Yindee increased in enrichment use behaviour. Also, like Rees (2009), a negative correlation was found between stereotypic behaviour and consume/foraging behaviour in both enclosures. The behavioural data can only give an indication of improved well-being and we may not have seen extreme positive signs yet but we can say that the new enclosure provides a more abundant set of options to the elephants. These extra options remove mental and physical barriers and stimulate the animal to exhibit natural behaviour which can only be a good thing (McPhee & Carlstead, 2010).</p>
Meteorological and Ecosystem Flux Data for: Climate Change Impacts on Net Ecosystem Productivity in a Subtropical Scrubland of Northwestern México
<p>This dataset accompains the paper: Climate Change Impacts on Net Ecosystem Productivity in a Subtropical Scrubland of Northwestern México which is submitted for publication at the Journal of Geophysical Research - Biogeosciences </p> <p>With this data set, we calibrate and validate an ecohydrological and a soil carbon model to assess climate change impacts in a subtropical scrubland located in northwest México. Model calibration and validation is performed using five continuous years of water, energy and carbon flux measurements from an eddy covariance tower and remotely-sensed vegetation indices. </p>
Mechanism For Perching On Smooth Surfaces Using Aerial Impacts
<p><strong>For many applications the battery life is the limiting factor for a UAV. Perching on the environment extends the operating time of the drone, which can be useful in applications such as surveillance (temporary security measures) and maintenance, and can provide additional stability for precise manipulation and reparation tasks. However, on smooth surfaces, such as glass or the surface of the blades of a wind-turbine, perching is challenging, as the surface should not be damaged.</strong></p> <p> </p> <p><strong>This video shows an experiment in which a drone perches on a smooth surface. A drone is presented with a manipulator that consists of three beams in a triangle structure, with a vacuum-cup on the end of the middle beam.The drone impacts the environment, which ensures sufficient vacuum in the vacuum-cup and a proper perch. Then the drone can be turned off. After a small period the drone is enabled again and takes off. Note that the procedure is performed by a person using an user-interface, while the drone is controlled with position and orientation controllers. </strong></p> <p><br> <strong>Note that this work is an application based on the knowledge gained from the work “Compliant Aerial Manipulators: Developing the New Generation of Aerial Robotic Workers”. The work has been extended to automate the perch and actively maintain the vacuum-level in the perched state in the work “Autonomous And Sustained Perching On Smooth Surfaces”.</strong></p>
Datset with answers for Impact assessment of vernacular settlements using an Analytic Hierarchy Process approach
<p>This repository contains the survey responses from a group of experts for the purpose of gather their judgement on how ongoing transformation process in selected villages of the Montesinho Natural Park in Portugal, affect the authenticity of the buildings. The questions were formulated following the methodology described for implementing an Analytic Hierarchy Process (AHP).</p> <p>The data contains a PDF with the questions given to the experts and an Excel file with their answers. </p>
Data from: Forestry impacts on stream flows and temperatures: A quantitative synthesis of paired catchment studies across the Pacific salmon range
<p>Forestry is pervasive across temperate North America and may influence aquatic environmental conditions such as flows and temperatures, as well as important species such as Pacific salmon (<em>Oncorhynchus</em> spp.). While there have been many large-scale forestry experiments using paired catchment designs, these studies have yet to be quantitatively synthesized. Thus, it remains unclear whether forestry impacts are consistent, context-dependent, or unpredictable. This study aims to quantitatively synthesize forestry impacts on streamflow and temperature, through a systematic review and synthesis of paired catchment studies across the range of Pacific salmon. Specifically, we investigated whether generalizable relationships exist between forestry intensity (percent watershed harvested) and impacts to streamflow and temperature. We also examined whether watershed features (climate, hydrology, lithology) and harvest method mediated forestry impacts. We extracted information from 35 unique paired-catchments from California to Alaska. Forestry had strong impacts on peak and low flows and maximum summer water temperatures, but responses were quite variable. Across all catchments, forestry elevated peak flows ~20% (n = 31 catchments), reduced low flows ~25% (n = 13 catchments), and increased maximum summer temperatures ~15% (n = 35 catchments) on average. However, these impacts were variable and were not predictable based on forestry intensity, thus broader stressor-response relationships were not supported. Forestry impacts on peak flows and maximum summer temperatures varied spatially. Peak flow impacts increased with increased northward latitude and temperature impacts decreased with eastward longitude. However, the magnitude of impacts were unrelated to other watershed attributes, which included climate (precipitation and aridity), rain vs. snow hydrology, elevation, and bedrock lithology. Harvest method and riparian buffer presence also had no detected effects on forestry impacts across studies and statistical models explained a low proportion of variation overall. Collectively, our results indicate that forestry can have substantial impacts on key environmental conditions; however, the magnitude of impact was variable and could not be clearly linked to easily-measured watershed characteristics. This implies that forestry impacts are not broadly predictable. Probabilistic risk models based on distributions of potential impacts may therefore be more useful for watershed management in data-poor situations.</p>
Wave climate simulations for Denmark - for paper 'Coinciding storm surge and wave setup: A regional assessment of sea level rise impact'
<p>This wave climate dataset are the results for the paper titled 'Coinciding storm surge and wave setup: A regional assessment of sea level rise impact'.</p> <p>The operational wave forecasting service provided by DMI-WAM uses the WAM Cycle version 4.5.4, a third-generation spectral wave model. DMI-WAM is used for the wave climate simulations. The meteorological forcing used in this study was obtained from the regional climate model DMI-HIRHAM, developed by the Danish Meteorological Institute (DMI). It is a component of the CORDEX (Coordinated Regional Climate Downscaling Experiment) ensemble in Europe. Regarding the selection of the time frame and IPCC scenarios in our study, we adhered to the recommendations provided by municipalities. Municipalities are keenly interested in obtaining near-future wind wave data for the specific purpose of using them for risk management. Therefore, the examination of forthcoming weather extremes in the near future within the context of the high greenhouse gas emission scenario (RCP8.5 scenario) is of significance within this investigation. We conduct simulations that encompass two distinct time periods: the historical period spanning from 1976 to 2005, and the near-future period from 2041 to 2070. We analyse the WAM model results for wave climate under both present climate conditions (1976-2005) and future climate scenarios (2041-2070) under the RCP8.5 scenario. Furthermore, note that while our wave climate simulations provide valuable insights into the dynamics of wind-induced waves, the mean SLR is not explicitly taken into account. The mean SLR component is considered in the storm surge simulations.</p> <p>Description of files:</p> <p><a href="../api/records/11052226/draft/files/sla.swh.slope.hist.final.max.nc/content" target="_blank" rel="noopener noreferrer">sla.swh.slope.hist.final.max.nc</a> - Maximum sea level, significant wave height, wave length and slope for the historical period.</p> <p><a href="../api/records/11052226/draft/files/sla.swh.slope.rcp85.final.max.MSLR35.nc/content" target="_blank" rel="noopener noreferrer">sla.swh.slope.rcp85.final.max.MSLR35.nc</a> - Maximum sea level, significant wave height, wave length and slope for the RCP8.5 period.</p> <p><a href="../api/records/11052226/draft/files/wavesetup.hist.final.max.nc/content" target="_blank" rel="noopener noreferrer">wavesetup.hist.final.max.nc</a> - Maximum wave setup for the historical period.</p> <p><a href="../api/records/11052226/draft/files/wavesetup.rcp85.final.max.MSLR35.nc/content" target="_blank" rel="noopener noreferrer">wavesetup.rcp85.final.max.MSLR35.nc</a> - Maximum wave setup for the RCP8.5 period.</p> <p><a href="../api/records/11052226/draft/files/wam.grib.his.swh.98p.nc/content" target="_blank" rel="noopener noreferrer">wam.grib.his.swh.98p.nc</a> - 2% exceedence of significant wave height for the historical period.</p> <p><a href="../api/records/11052226/draft/files/wam.grib.rcp8.swh.98p.nc/content" target="_blank" rel="noopener noreferrer">wam.grib.rcp8.swh.98p.nc</a> - 2% exceedence of significant wave height for the RCP8.5 period.</p>
Database S1 - ASVs significantly impacted by chemical stressor treatments
<p>In the study by Wasimuddin et al. 2024 (https://www.biorxiv.org/content/10.1101/2024.04.20.590402v1), we identified Amplicon Sequence Variants (ASVs) that differed significantly in mean relative abundance due to the chemical stressor treatments. We performed differential abundance analysis with DESeq2, i.e. between Ctr-As, Ctr-Bx, Ctr-Tb using negative binomial-based Wald tests (P≤0.05). The individual ASVs can be retrieved in the Database S1, which consists of a R object that can be easily imported in R and further used for downstream analyses as follows.</p> <p>```<br>library(DESeq2)<br>DatabaseS1 <- readRDS("DatabaseS1.RDS")<br>names(DatabaseS1)<br>DatabaseS1[1]<br>```</p>
Microdata on vector abundance and IRS quality assurance (Estimating the impact of indoor residual spraying on sandfly abundance and incidence of visceral leishmaniasis in India from 2016 to 2022: an interrupted time-series analysis and modelling study)
<p>This repository contains the microdata on vector abundance and quality assurance of indoor residual spraying (IRS) that was used to estimate the impact of IRS on sandfly abundance and incidence of visceral leishmaniasis (VL) in India, as described in the paper "Estimating the impact of indoor residual spraying on sandfly abundance and incidence of visceral leishmaniasis in India from 2016 to 2022: an interrupted time-series analysis and modelling study" by Coffeng et al (<a href="https://doi.org/10.1016/S1473-3099(24)00420-1">https://doi.org/10.1016/S1473-3099(24)00420-1</a>). These data were collected as part of a BMGF-funded project led by dr. Michael Coleman at the Liverpool School for Tropical Medicine, as described in an earlier paper by Deb et al (<a href="https://doi.org/10.1371/journal.pntd.0009101">https://doi.org/10.1371/journal.pntd.0009101</a>).</p> <p>This repository does not include microdata on VL cases as these are owned by India's National Center for Vector Borne Disease Control (NCVBDC, <a href="https://ncvbdc.mohfw.gov.in/" target="_blank" rel="nofollow noreferrer noopener">https://ncvbdc.mohfw.gov.in/</a>).</p>
Sediment core dataset for "Shift away from Nile incision at Luxor ~4,000 years ago impacted ancient Egyptian landscapes"
<p>This dataset contains all sedimentary core information used for reconstructing the Holocene evolution of the Nile Valley landscape near Luxor in Egypt.</p> <p>Sedimentary information from 81 sediment cores retrieved by a combination of hand-operated Eijkelkamp augers and a gasoline-powered Cobra TT percussion corer was used to investigate the Nile’s Holocene fluvial deposits in its valley near Luxor, Egypt. Sediment samples were studied in ~10 cm intervals and had their characteristics such as sedimentary texture (conforming to USDA standards), grain size, Munsell colour, degree of sorting, mica occurrence and rhizolith percentages logged on-site. Boreholes reached to an average depth of ~8 m — with many penetrating >10 m. Their spacing varied from ~20 to 200 m, depending on the heterogeneity of the subsurface. The cross-section was strategically placed to span the entire valley, perpendicular to the main axis of the Nile Valley and the current river, while following governmental policies and regulatory procedures working in and around Egyptian Antiquities areas. Coring locations were recorded in UTM36N and the Survey of Egypt vertical datum using a Leica RTK-GNSS positioning system, and subsequently stored together with the sedimentary logs for future reference. Subsequently, UTM36N coordinates were converted to degrees, minutes, seconds for publication purposes. </p> <p>This dataset consists of one Microsoft Excel workbook:</p> <p>1_sedimentary_core_dataset.xlxs</p> <p>Further details can be found in Peeters et al. "Shift away from Nile incision at Luxor ~4000 years ago impacted ancient Egyptian landscapes" (Nature Geoscience, 17, July 2024, p. 645–653, <a href="https://www.nature.com/articles/s41561-024-01451-z" target="_blank" rel="noopener">https://www.nature.com/articles/s41561-024-01451-z</a>). </p> <p>Contact information:</p> <p>Dr Angus Graham (angus.graham@arkeologi.uu.se)</p> <p>Dr Jan Peeters (j.peeters1.uu@gmail.com)</p>
Acclimation to moderate temperatures can have strong negative impacts on heat tolerance of arctic arthropods
<p>The Arctic is impacted by some of the fastest temperature changes observed on Earth, but the impact on terrestrial arthropod fauna is unclear. Acute physiological thermal limits of terrestrial ectotherms from high latitudes often exceed the local air temperatures, suggesting that they may be able to cope with increasing temperatures. However, knowledge of how arctic terrestrial arthropods cope with elevated temperatures for longer periods is lacking. Here we investigate how acclimation temperature and exposure time affect the acute physiological heat tolerance of five terrestrial arthropod species (<em>Neomolgus littoralis, Megaphorura arctica, Nysius groenlandicus</em>, <em>Psammotettix lividellus</em>, and <em>Nabis flavomarginatus</em>) immediately after collection in arctic and sub-arctic habitats. We show that although acute heat tolerances are relatively high, even exposure to moderate (temperature span assessed ca. 3-29°C) acclimation temperatures for 24 hours have strong negative effects on heat tolerance for four of the five species. Similarly, exposure time negatively affected heat tolerance, depending on species and temperature. Together our results suggest that exposure to even moderately elevated temperatures for periods of 24 h or even shorter can lead to lower acute heat tolerance for cold-adapted terrestrial arthropod species from sub-Arctic and Arctic regions. Consequently, climate change leading to extended periods of mildly elevated temperatures may have strong negative effects on these species. We argue that this aspect is currently overlooked when assessing the ability of arthropods from Arctic and sub-Artic regions to cope with climate changes as such predictions are typically based on acute heat tolerance estimates and with the assumption of beneficial acclimation responses.</p>
The impact of weekly fever-screening and treatment and monthly RDT testing and treatment on the infectious reservoir of malaria in Burkina Faso: results from a cluster-randomised trial
<p>The majority of malaria infections in endemic countries are asymptomatic and a source of onward transmission to mosquitoes. Malaria transmission and disease burden could be reduced by improving early detection and treatment of these infections with active screening approaches. In an 18-month cluster-randomized study in Sapone, Burkina Faso, households were enrolled and randomised to 1 of 3 arms: arm 1 - control; arm 2 - active weekly screening for febrile individuals and treatment if rapid diagnostic test (RDT) positive; or arm 3 – active weekly fever-screening (as arm 2) plus monthly RDT-testing regardless of symptoms. The primary outcome was parasite prevalence by qPCR in the end-of-study cross-sectional survey. Secondary outcomes included parasite and gametocyte prevalence and density in all three end-of-season cross-sectional surveys, incidence of infection, and the transmissibility of infections to mosquitoes. A total of<strong> </strong>906 individuals were enrolled during 2 phases. In Phase 1, 412 individuals were enrolled between August 9 and 17, 2018, and in Phase 2, 494 individuals were enrolled between January 10 and 31, 2019. In the end-of-study cross-sectional survey, malaria parasite prevalence by qPCR was statistically significantly lower in arm 3 (29·26% 79/270), but not in arm 2 (45·66% 121/265), when compared to arm 1 (48·72% 133/273) (RR = 0·65, 95%CI = 0·52 to 0·81, P=0·0001). Total parasite and gametocyte prevalence and density were also significantly lower in arm 3 in all surveys. The largest differences were seen at the end of the dry season, with gametocyte prevalence 78·38 % and transmission potential 98·20% lower in arm 3 vs arm 1. Active monthly RDT testing and treatment can reduce parasite carriage and the infectious reservoir of malaria to <2% when used during the dry season. This insight may inform approaches for malaria control and elimination.</p>
Data and code from "Temporal allele frequency changes in large-effect loci reveal potential fishing impacts on salmon life-history diversity" (Miettinen et al. 2024)
<p>This archive contains code and data files to perform analyses detailed in Miettinen et al. (2024, Evolutionary Applications, https://doi.org/10.1111/eva.13690).</p>
Heatwave responses of Arctic phytoplankton communities are driven by combined impacts of warming and cooling
<p>Marine heatwaves are increasing in frequency and intensity as climate change progresses, especially in the highly productive Arctic regions. Although their effects on primary producers will largely determine the impacts on ecosystem services, mechanistic understanding on phytoplankton responses to such extreme events is still very limited. We experimentally exposed Arctic phytoplankton assemblages to stable warming, as well as to repeated heatwaves, and measured temporally resolved productivity, physiology and composition. Our results show that even extreme stable warming increases productivity, while the response to heatwaves depends on the specific scenario applied, and are not predictable from stable warming responses. This appears to be largely due to the underestimated impact of the cool phase following a heatwave, which can be at least as important as the warm phase for the overall response. We show that physiological and compositional adjustments to both, warm and cool phases drive overall phytoplankton productivity, and need to be considered mechanistically to predict overall ecosystem impacts.</p>
Data for "Impact of early visual experience on later usage of color cues"
<div> <div>This repository contains the code and data underlying the paper "Impact of early visual experience on later usage of color cues" (Vogelsang et al., Science, 2024).</div> </div>
Geochemistry and chronology of lunar KREEP-rich regolith breccia meteorite Northwest Africa 4485: Implications for the Imbrium impact event and high alkali suite
<p>The dataset includes chemical composition, chronology, and spectral data of lunar meteorite Northwest Africa 4485 (Table 1 and Table 2, Table S1 to S4) for the manuscript "Geochemistry and chronology of lunar KREEP-rich regolith breccia meteorite Northwest Africa 4485: Implications for the Imbrium impact event and high alkali suite".</p>
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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.