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3,709
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3,709 results for “urbanization.”
Thermal tolerance of Lasius americanus across urbanization and geographical gradients
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Individual variation in tolerance of human activity by urban dark-eyed juncos (Junco hyemalis) 2021 Stansell et al data file
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Physiology of Urban Trees, 4 of 7
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Physiology of Urban Trees, 3 of 7
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Physiology of Urban Trees, 1 of 7
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Physiology of Urban Trees, 7 of 7
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Physiology of Urban Trees, 6 of 7
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Physiology of Urban Trees, 5 of 7
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Hierarchical Bayesian scaling of soil properties across urban, agricultural, and desert ecosystems in central Arizona-Phoenix
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Atmospheric deposition sampling across an urban gradient, using passive resin collectors
One of the "Grand Challenges" for environmental biology is to increase understanding of human perturbations of biogeochemical cycles (NRC 2001). One route for these perturbations to be affected is through the transfer of pollutants from the atmosphere to the biosphere. As part of the Ecosystem Response to Material Deposition from the Urban Atmosphere (N. B. Grimm, PD) study, CAP-LTER scientists are investigating the fate of anthropogenic organic C (oC) and inorganic nitrogen (iN) deposition and their effects on ecosystem functioning in unmanaged deserts within and near cities. We hypothesize that biogeochemical cycling will be qualitatively different in urban environments due to large inputs of biologically available C and N from the atmosphere. As part of this project, we will deploy filter banks equipped with size-selective aerosol inlets to collect particulate oC and iN compounds in the urban atmosphere. In order to estimate fluxes of these nutrients from the concentration measurements, we plan to deploy weather stations and to analyze these data to estimate deposition rates.
Ecological Homogenization of Urban America: residential microclimates
Urban, suburban, and exurban ecosystems are important and increasing in the U.S. As the population of cities grows, so to do areas being converted to residential housing. An untested result of urban land use change is the homogenization across cities, where neighborhoods in very different parts of the country have similar patterns of roads, aquatic features, and, especially, residential yards. We hypothesized that this homogenization also involves ecological structure and functions relevant to ecosystem carbon and nitrogen dynamics, with continental scale implications. Further, we suggested that understanding urban homogenization would provide the basis for understanding the impacts of urban land use change from local to continental scales. We collected social and ecological data ranging from household surveys to soil sampling across six metropolitan statistical areas (MSAs) that cover the major climatic regions of the US (Phoenix, AZ; Miami, FL; Baltimore, MD; Boston, MA; St. Paul, MN; and Los Angeles, CA) to determine how household characteristics correlate with landscaping decisions, land management practices, and ecological structure and functions at local, regional, and continental scales. In this dataset, we specifically focus on the homogenization of residential yard microclimates, including air and soil temperature, and soil moisture.
Annual Land Use and Urban Land Cover: Ethiopia, Nigeria, and South Africa, 2016-2020
This dataset provides a two-tier annual Land Use (LU) and Urban Land Cover (LC) product suite over three African countries, Ethiopia, Nigeria, and South Africa, across a 5-year period of 2016-2020. Remote sensing data sources were used to create 30-m resolution LU maps (Tier-1), which were then utilized to delineate urban boundaries for 10-m resolution LC classes (Tier-2). Random Forest machine learning classifier models were trained on reference data for each tier and country (but one model was trained across all years); models were validated using a separate reference data set for each tier and country. Tier-1 LU maps were based on the 30-m Landsat time series, and Tier-2 urban LC maps were based on the 10-m Sentinel-2 time series. Additional data sources included climate, topography, night-time light, and soils. The overall map accuracy was 65-80% for Tier-1 maps and 60-80% for Tier-2 maps, depending on the year and country. The data are provided in cloud optimized GeoTIFF (COG) format.
NACP: Urban Greenhouse Gases across the CO2 Urban Synthesis and Analysis Network, V2
This dataset provides hourly urban greenhouse gas measurements for cities in the CO2 Urban Synthesis and Analysis (CO2-USA) Data Synthesis Network for 2000 to 2019. Measurements include carbon dioxide (CO2), methane (CH4), and carbon monoxide (CO) concentrations measured at hourly intervals at multiple sites within the U.S. cities of Boston, Indianapolis, Los Angeles, Portland, Salt Lake City, San Francisco, and Washington DC/Baltimore, and Toronto, Canada.
Urban Land Cover Maps for Mekelle, Ethiopia and Polokwane, South Africa, 2020
This dataset consists of very high resolution urban land cover maps for two African cities, Mekelle, Ethiopia and Polokwane, South Africa for 2020. Maps were generated from Planet SuperDove satellite imagery at 3.125-m spatial resolution, and Worldview-3 satellite imagery (Maxar Techologies) at two spatial resolutions, 2 m for multispectral imagery and 0.5-m spatial resolution for pansharpened imagery. An object-based image classification approach was used to produce a multi-class land cover product for each image source. The aim of this work was to support fine scale urban land cover analyses and comparative assessments between different high resolution satellite imagery sources. The data are provided in shapefile format.
Urban Biogenic CO2 fluxes: GPP, Reco and NEE Estimates from SMUrF, 2010-2019
This dataset contains estimates of biogenic CO2 flux components at 0.05 degree resolution from the Solar-Induced Fluorescence (SIF) for Modeling Urban biogenic Fluxes (SMUrF) model. Estimates were produced for the following regions and periods: eastern and western CONUS (2010-2019), western Europe (2010-2014 and 2017-2018), eastern Asia, eastern China, eastern Australia, South America, and Central Africa (2017-2018). Modeled CO2 flux components include gross primary production (GPP), ecosystem respiration (Reco), and net ecosystem exchange (NEE). Four-day means of GPP are estimated from solar-induced fluorescence (SIF) and biome-specific GPP-SIF relationships. Daily estimates of Reco are included. In addition, GPP and Reco were downscaled to hourly estimates and used to generate hourly NEE. Uncertainties for 4-day GPP and daily Reco estimates are provided. The input data streams included 500 m MODIS-based annual land cover classification, 0.05 degree spatiotemporally contiguous SIF, above-ground biomass (AGB) from GlobBiomass, eddy-covariance (EC) flux measurements, and gridded products of air and soil temperatures.
German cockroach subcutaneous immunotherapy: Impact on nasal responses and allergen-specific immunity among urban children with asthma
GEO Series GSE250580. Homo sapiens. 266 samples. Type: Expression profiling by high throughput sequencing.
Genome-wide transcriptome differences associated with perceived discrimination in an urban, community-dwelling middle-aged cohort
GEO Series GSE244654. Homo sapiens. 59 samples. Type: Expression profiling by high throughput sequencing.
Regional Epigenetic Variation in Asexual Snail Populations among Urban and Rural Lakes
GEO Series GSE133502. Potamopyrgus antipodarum. 9 samples. Type: Methylation profiling by high throughput sequencing.
Urban waterways microbial communities (GeoChip)
GEO Series GSE64286. Bacteria; environmental samples; environmental samples; environmental samples. 17 samples. Type: Genome variation profiling by array.
Skin response to urban pollution in an ex vivo model
GEO Series GSE126440. Homo sapiens. 33 samples. Type: Expression profiling by array.
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.