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271 results for “Ontario”
Environmental and food web determinants of Lake Trout mercury concentrations in Ontario Lakes
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Cyanobacterial blooms in a warming climate: Paleolimnological assessments of three Boreal Shield lakes in central Ontario, Canada
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Data for: Multi-omics analysis identifies symbionts and pathogens of blacklegged ticks (Ixodes scapularis) from a Lyme disease hotspot in southeastern Ontario, Canada
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Mallards have been replacing Black Ducks in human-altered landscapes in Ontario, 1996-2019
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The Ontario Lake and River Routing Product Version 2 (OLRRP V2)
<p>The Ontario Lake and River Routing Product (OLRRP) is a high-resolution, vector-based lake-river routing GIS product over the Province of Ontario. The OLRRP supplies network topology and various subbasin, channel, and lake attributes required for hydrological modeling. Version 2 of OLRRP is an enhancement relative to Version 1 (<a href="../records/6536085">here</a>). </p> <p>Key upgrades in OLRRP V2 include using the Provincial Digital Elevation Model to derive elevation related attributes, almost 500 non-HYDAT hydrometric stations and over 200 hydropower generating station locations are now defined as Points of Interest (POI), an improved POI snapping procedure improves the inclusion rate and accuracy of POI on the lake and river networks, and an enhanced suite of cloud-based Python GIS post-processing tools (BasinMaker V3.1) are now available for users to access and customize their case study routing networks. </p> <p>The OLRRP V2 connects 245,576 subbasins (average area 4.3 km²) and 82,928 lakes (surface areas ranging from 0.1 km² to 4,506 km²) and assigns 4033 POI to these subbasins and lakes. The agreement between ECCC HYDAT reported drainage areas (998 in total) and the corresponding computed drainage areas is excellent. For 74% of comparisons, drainage areas show less than 2% difference while in only 4% of these comparisons, the absolute drainage area difference exceeds 10%. The OLRRPv2 provides detailed routing networks for any of the above lakes/subbasins/POIs and thus supports semi-distributed hydrological modeling, vector-based routing only modeling and other water resources analyses requiring the connectivity of lakes and rivers in Ontario.</p> <p> </p> <h3><strong>The OLRRP V2 Homepage for online map viewing and download is <a href="https://uwaterloo-olrrp.shinyapps.io/OLRRP-V2/">here</a>.</strong></h3> <h3><strong>The BasinMaker V3.1 Post-Processing Tools available on Google Colab can be found <a href="https://colab.research.google.com/drive/1tsSUiVXmU1VBR_4U313Tin_m2zmFDzRP?usp=sharing">here</a>.</strong></h3> <p> </p> <p>In this repository, three different files are attached:</p> <p>(1) Nine folders for OLRRP V2 in the nine drainage regions in Ontario (i.e., 'NW', 'FNC1', 'FNC2', 'FNE', 'FNW', 'NC', 'NE', 'SE', and 'SW'). Each folder contains several shapefiles files that are used to define a routing network and the related attributes.</p> <p>(2) A document of data specifications for GIS shapefiles. Details on different shapefiles in (1) and their attributes are clarified in this document.</p> <p>(3) The master points of interest (POI) spreadsheet for OLRRP V2 in a Microsoft EXCEL file. This file contains all POI used in OLRRP V2.</p> <p>Note that these data can also be downloaded from the OLRRP V2 homepage.</p> <p> </p> <h3><strong>Please cite the following data and paper publications if you are using the OLRRP V2</strong></h3> <p><strong>Journal Publication</strong></p> <p>Ming Han, Hongren Shen, Bryan A. Tolson, James R. Craig, Juliane Mai, Simon GM Lin, Nandita B. Basu, and Frezer S. Awol. "BasinMaker 3.0: A GIS toolbox for distributed watershed delineation of complex lake-river routing networks." <em>Environmental Modelling & Software</em> 164 (2023): 105688. (<a href="https://www.sciencedirect.com/science/article/pii/S1364815223000749">here</a>)</p> <p><strong>Data Publication</strong></p> <p>Shen, H., Han, M., Tolson, B., & Metcalfe, R. A. (2024). The Ontario Lake and River Routing Product Version 2 (OLRRP V2) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.10844908</p> <p> </p> <p>If you have any questions, please contact Hongren Shen (hongren.shen@uwaterloo.ca).</p> <p> </p> <h3><strong>Updates on Nov 27 2024</strong></h3> <p>A minor fix for gauge count number was made in the summary table and is now available in OLRRP_v2_POI_info_20241127.xlsx.</p> <pre>Other data can still be refered to the previous version <a href="https://doi.org/10.5281/zenodo.10844908">here.</a></pre>
N2 fixation rates at Mer Bleue bog, Ontario, Canada
<p>This dataset contains bi-weekly measurements of N2 fixation rates and ancillary measurements at the Mer Bleue bog in Ontario, Canada. A detailed description of the dataset can be found in the accompanying publication Zivkovic et al. (Journal of Geophysical Research - Biogeosciences, in review).</p>
Spatially explicit genetic capture-recapture data from black bears in Ontario, Canada, 2017-2019
<p>The Ontario Ministry of Northern Development, Mines, Natural Resources and Forestry sampled black bear (<em>Ursus americanus</em>) DNA at baited barbed wire hair corrals on 77 independent study areas in Ontario Canada, 2017-2019. Spatially explicit capture-recapture data from these surveys (>12 000 independent, spatially referenced detections of nearly 4000 individual bears) are archived here. This data set will be cited in manuscripts presenting different analyses of the entire data set or subsets thereof.</p>
Supporting Documents for "The DESC Catchments: Long-term Monitoring of Inland Precambrian Shield Catchment Streamflow and Water Chemistry in Central Ontario, Canada"
<p>Supporting documents for "<strong>The DESC Catchments: Long-term Monitoring of Inland Precambrian Shield Catchment Streamflow and Water Chemistry in Central Ontario, Canada" </strong> that are otherwise not readily accessible. These include historical government reports and relevant laboratory method descriptions from the Ontario Ministry of Environment (Canada). Reports List includes a listing of the 14 documents.</p>
Too many to count: Using orthophotography to census an unharvested beaver (Castor canadensis) population in Ontario
<p>Various field methods exist to monitor wildlife populations and estimate trends in their distribution and abundance. For American beaver (Castor canadensis), aerial surveys provide a means to obtain abundance data over large areas and typically involve observers searching watercourses and shorelines for active beaver presence. Here, we describe a systematic aerial photo census we designed and executed in autumn to quantify annual beaver abundance on the 184 km2 Michipicoten Island, Ontario from 2015–2019. Aerial photos were stitched together into orthophoto mosaics after each census and visually searched for beaver food caches, with each food cache representing an independent beaver colony. Our methods revealed that beaver colony abundance declined substantially from a peak of 6.1 colonies/km2 in 2015, the highest reported across North America, to 0.4 colonies/km2 in 2018. Beaver abundance remained low through 2019. Though photographing the entire isolated study area required relatively little time and effort, even when beaver density was very high, post-census processing work was time-consuming. Lessons learned will improve the efficiencies of our future censuses and aid other researchers. Our method is advantageous over traditional aerial wildlife surveys in that it provides a digital and visual record that can be used for additional analyses. </p>
Brook trout occupancy in the Mixedwood Plains Ecozone, Ontario
<p>The Ontario Ministry of Northern Development, Mines, Natural Resources and Forestry compiled brook trout presence and absence data for rivers and streams within the Mixedwood Plains Ecozone of Ontario. Data from hundreds of electrofished sites were grouped into two time periods, past (1970-1980) and recent (2000-2010), to quantify the change in brook trout occupancy in streams of the Mixedwood Plains Ecozone in Ontario at different spatial scales. The data include information for five spatial scales: 1) tertiary watersheds; 2) quaternary watersheds; 3) the well-sampled Credit River-Sixteen Mile Creek tertiary watershed; and, 4) sites within 50 m of each other were sampled in both the past (1970-1980) and recent (2000-2010) periods, and 5) at each spatial scale brook trout occupancy along the longitudinal axes of the rivers was assessed using Strahler stream order. This data set will be cited in a manuscript that quantifies the declines in brook trout occupancy in rivers and streams of southern Ontario.</p>
Data to accompany from: Effects of neonicotinoid seed treatments on wildbee populations and soybean and corn fields in eastern Ontario
<p><span>Neonicotinoid-coated corn and soybean seeds are a common crop in Canada and the US. A growing body of research is demonstrating that, through various exposure routes, neonicotinoids can impact a suite of non-target organisms including beneficial insects such as bees. However, to date, only a few studies have examined the effects of neonicotinoids in field settings. We assessed the relationship between agricultural crop soil neonicotinoid levels and wild bee abundance and diversity at 16 agricultural sites representing different soil neonicotinoid levels. We detected clothianidin at 11 sites, thiamethoxam at three sites; imidacloprid was not detected. Hedgerow and crop soils were consistent in terms of where clothianidin was detected; thiamethoxan was not detected in hedgerow soils. Based on model outcomes, fields with higher levels of soil neonicotinoids exhibited significantly lower wild bee abundance and diversity than those with low or no neonicotinoids detected. Crop soil neonicotinoid level, hedgerow floral resource abundance and crop type were consistent predictors of bee abundance across models; only neonicotinoid level and crop type were significant predictors of diversity. Our results are consistent with recent findings in the midwestern US, and underscore the potential risk of soil neonicotinoids to wild bee populations across regions and crop systems.</span></p>
Field Data Associated with Internal Swash Zone Study in Hamilton Harbour, Lake Ontario
<p>Compiled Field data associated with the study:</p> <p>Flood, Bryan, Mathew Wells, Jonathan D. Midwood, Jill Brooks, Yulong Kuai, and Jingzhi Li. "Intense variability of dissolved oxygen and temperature in the internal swash zone of Hamilton Harbour, Lake Ontario." <em>Inland Waters</em> (2021): 1-18.</p> <p>Data is organized by field year, and data type. Metadata is included.</p>
Data for deJonge et al. - Characterizing an invasion assemblage: first comparison of insect communities on native and introduced subspecies of Phragmites australis in Ontario, Canada
<p>Data for deJonge et al. publication "Characterizing an invasion assemblage: first comparison of insect communities on native and introduced subspecies of <em>Phragmites australis </em>in Ontario, Canada". Data are produced from a 2016-2017 survey of 28 geographically paired sites across Ontario, Canada containing introduced <em>Phragmites australis </em>ssp. <em>australis </em>or native <em>Phragmites australis </em>ssp. <em>americanus</em>. The dataset includes for each site basic descriptions of site characteristics (e.g., latitude, stem density), the stem attack rate (% of live stems containing at least one insect) of fourteen insect taxa, and alpha-diversity indices calculated from the attack rates ("FullSiteData" tab). It also includes basic presence and absence data for each taxon across the fourteen sites of each subspecies ("Presence-AbsenceData" tab), and paired differences between native and introduced sites in alpha- and beta-diversity indices, and stem attack rates by taxon ("PairedData(Native-Introduced)" tab).</p>
Lantern at High Level Bridge, Hamilton, Ontario
Modelled in shapr3d from photographs of the latern on the High Level Bridge in Hamlton, Ontario. Source: Objaverse 1.0 / Sketchfab
The Ontario Neurodegenerative Disease Research Initiative
ClinicalTrials.gov study NCT04104373. IPD Sharing: YES. Countries: 1. Publications: 1.
Evaluation of federal habitat stewardship projects for aquatic species at risk in Canada: The province of Ontario as a case study
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TuMV infection in <em>Hesperis matronalis</em> across Kingston, Ontario
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Spatially explicit genetic capture-recapture data from black bears in Ontario, Canada
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Brook trout occupancy in the Mixedwood Plains Ecozone, Ontario
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Long-term changes in Wolf Lake (Sudbury region, Ontario) situated in Mi’iangan Zaagagan Preserve: a proposed Indigenous conservation area
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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.