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332 results for “environmental conditions”
Hydrothermal carbonization of vegetable-tanned leather shavings (HTC-VTS) for environmental remediation: optimization of process conditions
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Data and code from: Network theory predicts ecosystem robustness across environmental conditions
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Data for: Termites have wider thermal limits to cope with environmental conditions in savannas
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Assessing the performance and efficiency of environmental DNA/RNA capture methodologies under controlled experimental conditions
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Environmental conditions and call-broadcast influence detection of eastern forest owls during standardized surveys
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Shedding light on environmentally transmitted parasites: darker conditions within lakes promote larger epidemics
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Milk production and environmental conditions of mountain-pastured Braunvieh cows between 2000 and 2015
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Data from: Last Glacial Maximum environmental conditions at Andøya, northern Norway; evidence for a northern ice-edge ecological “hotspot”
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Targeted occupant surveys: A novel method to effectively relate occupant feedback with environmental conditions
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Data and code for: Explainable machine learning revealed the conditional response of biogenic isoprene to the changes in environmental factors at an urban site in the Yangtze River Delta, China
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Supplementary material 1 from: Wolf J, Haase D, Kühn I (2020) The functional composition of the neophytic flora changes in response to environmental conditions along a rural-urban gradient. NeoBiota 54: 23-47. https://doi.org/10.3897/neobiota.54.38898
: Data type: (measurement/occurrence/multimedia/etc.)
Fracture dolomite as an archive of continental palaeo-environmental conditions
<p>Supplementary Information File (raw data; Table 1-8) to the article "Fracture dolomite as an archive of continental palaeo-environmental conditions", published in Communications Earth & Environment</p>
Influence of biological and environmental conditions on winter mortality risk of a northern ungulate: evidence for a late-winter survival bottleneck
<p><b>1.</b> A relationship between winter weather and survival of northern ungulates has long been established, yet the possible roles of biological (e.g., nutritional status) and environmental (e.g., weather) conditions make it important to determine which potential limiting factors are most influential.</p> <p><b>2</b>. Our objective was to examine the potential effects of individual (body mass and age) and extrinsic (winter severity and snow melt conditions) factors on the magnitude and timing of mortality for adult (>2.5 years old) female white-tailed deer (<i>Odocoileus virginianus </i>[Zimmerman, 1780] during February–May in the Upper Peninsula of Michigan, USA.</p> <p><b>3</b>. One hundred and fifty deer were captured and monitored during 2009–2015 in two areas with varying snowfall. February–May survival ranged from 0.24–0.89 (mean = 0.69) across years. Mortality risk increased 1.9% with each unit increase of cumulative winter severity index, decreased 8.2% with each cumulative snow free day, and decreased 4.3% with each kg increase in body mass. Age and weekly snow depth did not influence weekly deer survival. Predation, primarily from coyote (<i>Canis latrans </i>[Say, 1823]) and wolves (<i>Canis lupus </i>[L., 1758]), accounted for 78% of known-cause mortalities.</p> <p><b>4</b>. Our results suggest that cumulative winter severity, and possibly to a lesser degree deer condition entering winter, impacted deer winter survival. However, the timing of spring snow melt appeared to be the most influential factor determining late winter mortality of deer in our study. This supports the hypothesis that nutrition and energetic demands from weather conditions are both important to northern ungulate winter ecology. Under this model, a delay of several weeks in the timing of spring snow melt could exert a large influence on deer survival, resulting in a survival bottleneck.</p>
Data from: Estimating fish abundance and biomass from eDNA concentrations: variability among capture methods and environmental conditions
Environmental DNA (eDNA) promises to ease non-invasive quantification of fish biomass or abundance, but its integration within conservation and fisheries management is currently limited by a lack of understanding of the influence of eDNA collection method and environmental conditions on eDNA concentrations in water samples. Water temperature is known to influence the metabolism of fish and consequently could strongly affect eDNA release rate. As water temperature varies in temperate regions (both seasonally and geographically), the unknown effect of water temperature on eDNA concentrations poses practical limitations on quantifying fish populations using eDNA from water samples. This study aims to clarify how water temperature and the eDNA capture method alter the relationships between eDNA concentration and fish abundance/biomass. Water samples (1 L) were collected from 30 aquaria including triplicate of 0, 5, 10, 15 and 20 Brook Charr specimens at two different temperatures. Water samples were filtered with five different types of filters. The eDNA concentration obtained by quantitative PCR (qPCR) varied significantly with fish abundance and biomass and type of filters (Mixed-design ANOVA, P < 0.001). Results also show that fish released more eDNA in warm water than cold water and that eDNA concentration better reflects fish abundance/biomass at high temperature. From a technical standpoint, higher levels of eDNA were captured with glass fiber (GF) than mixed cellulose ester (MCE) filters and support the importance of adequate filters to quantify fish abundance based on the eDNA method. This study supports the importance of including water temperature in fish abundance/biomass prediction models based on eDNA.
Data from: Sex differences in adult mortality rate mediated by early-life environmental conditions
Variation in sex differences is affected by both genetic and environmental variation, with rapid change in sex differences being more likely due to environmental change. One case of rapid change in sex differences is human lifespan, which has become increasingly female-biased in recent centuries. Long-term consequences of variation in the early-life environment may, in part, explain such variation in sex differences, but whether the early-life environment mediates sex differences in life-history traits is poorly understood in animals. Combining longitudinal data on 60 cohorts of pre-industrial Finns with environmental data, we show that the early-life environment is associated with sex differences in adult mortality and expected lifespan. Specifically, low infant survival rates and high rye yields (an important food source) in early-life are associated with female-bias in adult lifespan. These results support the hypothesis that environmental change has the potential to affect sex differences in life-history traits in natural populations of long-lived mammals.
Data from: A systematic approach to evaluate the influence of environmental conditions on eDNA detection success in aquatic ecosystems
The use of environmental DNA (eDNA) to determine the presence and distribution of aquatic organisms has become an important tool to monitor and investigate freshwater communities. The successful application of this method in the field, however, is dependent on the effectiveness of positive DNA verification, which is influenced by site-specific environmental parameters. Factors affecting lower eDNA concentrations in aquatic ecosystems include flow conditions, and the presence of substances that possess DNA-binding properties or inhibitory effects. In this study we investigated the influence of different environmental parameters on the detection success of eDNA using the invasive goby Neogobius melanostomus. In a standardized laboratory setup, different conditions of flow, sediment-properties, and fish density were compared, as well as different potential natural inhibitors such as algae, humic substances, and suspended sediment particles. The presence of sediment was mainly responsible for lower eDNA detection in the water samples, regardless of flow-through or standing water conditions and a delayed release of eDNA was detected in the presence of sediment. Humic substances had the highest inhibitory effect on eDNA detection followed by algae and siliceous sediment particles. The results of our study highlight that a successful application of eDNA methods in field surveys strongly depends on site-specific conditions, such as water flow conditions, sediment composition, and suspended particles. All these factors should be carefully considered when sampling, analyzing, and interpreting eDNA detection results.
Stability in subtropical forests: the role of tree-species diversity, stand structure, environmental and socio-economic conditions
<p><strong>Aim: </strong>Tree species diversity can increase the stability of ecosystem productivity by increasing mean productivity and/or reducing the standard deviation in productivity. However, stand structure, environmental and socio-economic conditions influence plant diversity and may strongly influence the relationships between diversity and stability in natural forest communities. The relative importance of these factors on community stability remains poorly understood in complex (species-rich) subtropical forests.</p> <p><strong>Location: </strong>Subtropical area of southern China.</p> <p><strong>Time period: </strong>1999-2014.</p> <p><strong>Major taxa studied:</strong> Forest trees.</p> <p><strong>Methods: </strong>We conducted bivariate analyses to examine the mechanisms (overyielding and species asynchrony) underlying the effects of diversity on stability. Multiple regression models were then used to determine the relative importance of tree species diversity, stand structure, socio-economic factors and environmental conditions on stability. Structural equation modeling was used to disentangle how these variables directly and/or indirectly affect forest stability.</p> <p><strong>Results: </strong>Tree species richness exerted a positive effect on stability through overyielding and species asynchrony and this effect was stronger in mountainous forests than that in hilly forests. Species richness positively affected the mean productivity whereas species asynchrony negatively affected the variability in productivity, and hence increased forest stability. Structural diversity also had a positive effect while population density had a negative effect on stability. Precipitation variability and slope mainly indirectly influenced stability through their effects on tree species richness.</p> <p><strong>Main conclusions: </strong>Overall, tree species diversity governed stability; however stand structure, socio-economic and environmental conditions also played an important role in shaping stability in these forests. Our work highlights the importance of regulating stand structure and socio-economic factors in forest management and biodiversity conservation, to maintain and enhance their stability of providing the ecosystem services in the face of unprecedented anthropogenic activities and global climate change.</p>
Early-life environmental conditions influence parasitism at adulthood and life-history of a cuckoo host
<p>Environmental conditions experienced by individuals early in life can extend into adult phenotypes with potential fitness consequences. Early life environmental effects can be relevant for hosts because bad early life conditions may impair host cognition increasing the risk of future parasitism or lowering parasite recognition. Here we provide a first test of this possibility by using data from a 16-year study of individually marked female magpie <i>Pica pica</i> hosts for which we know natal and adult environments, occurrence of costly great spotted cuckoo <i>Clamator glandarius</i> parasitism, egg discrimination ability and life history in detail. Females born in warmer years were more likely to be parasitized in adulthood and produced fewer offspring throughout their life. Egg discrimination behavior and lifespan of magpies were not influenced by the quality of natal environments. These results provide support for the idea that there exists annual environmental variation potentially promoting cohort effects in magpie hosts that may have an impact on cuckoo-host co-evolutionary dynamics.</p>
Environmental (hydrodynamic) conditions on the NW African coast from 3D reanalysis models
<p>This dataset contain hydrodynamic and biogeochemical variables extracted from the CMEMS service (<a href="https://marine.copernicus.eu/">https://marine.copernicus.eu/</a>) covering the NW region of the African coast and the period 1993 to 2019. The environmental dataset include: water temperature, water salinity, u-velocity and v-velocity.</p>
Figure 1 in Investigation of roost composition of passerine birds in different environmental conditions
Figure 1. Recordings of four birds in their communal roosts in University Campus, Faisalabad. S.E. = Standard Error.
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.