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435 results for “Minnesota”
Fig. 2 in Spatio-temporal variation in prevalence and intensity of trematodes responsible for waterfowl die-offs in faucet snail-infested waterbodies of Minnesota, USA
Fig. 2. Average prevalence of (a) Cyathocotyle bushiensis (Cb) and (b) Sphaeridiotrema spp. (Sg) metacercariae in each of the waterbodies studied in northcentral Minnesota during nine seasons in 2011‾2013 with 95% confidence intervals.
Fig. 1 in Spatio-temporal variation in prevalence and intensity of trematodes responsible for waterfowl die-offs in faucet snail-infested waterbodies of Minnesota, USA
Fig. 1. Map of study area in northcentral Minnesota depicting the study lakes with county boundaries, within the state and USA.
Linked collectors and determiners for: University of Minnesota Insect Collection.
Natural history specimen data linked to collectors and determiners held within, "University of Minnesota Insect Collection". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/8e02e1dd-ec54-405e-b4d7-7abdecd29cc7">https://bionomia.net/dataset/8e02e1dd-ec54-405e-b4d7-7abdecd29cc7</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/8e02e1dd-ec54-405e-b4d7-7abdecd29cc7">https://gbif.org/dataset/8e02e1dd-ec54-405e-b4d7-7abdecd29cc7</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: Olga Lakela Herbarium, University of Minnesota Duluth.
Natural history specimen data linked to collectors and determiners held within, "Olga Lakela Herbarium, University of Minnesota Duluth". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/0df1ebee-0ce6-4fe1-9cd7-ee959670a880">https://bionomia.net/dataset/0df1ebee-0ce6-4fe1-9cd7-ee959670a880</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/0df1ebee-0ce6-4fe1-9cd7-ee959670a880">https://gbif.org/dataset/0df1ebee-0ce6-4fe1-9cd7-ee959670a880</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: A checklist of the bees (Hymenoptera: Apoidea) of Minnesota.
Natural history specimen data linked to collectors and determiners held within, "A checklist of the bees (Hymenoptera: Apoidea) of Minnesota". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/b856cb6e-4795-4028-8c84-240be130e150">https://bionomia.net/dataset/b856cb6e-4795-4028-8c84-240be130e150</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/b856cb6e-4795-4028-8c84-240be130e150">https://gbif.org/dataset/b856cb6e-4795-4028-8c84-240be130e150</a>. Formatted as a Frictionless Data package.
Figure 1 in Nematodes infest winter-active chironomids in Minnesota trout streams
Figure 1. Female Orthocladiinae longevity and survival probability with and without nematode parasitism in Ike's Creek. Longevity defined as days lived post collection. (a) Box and whisker boundaries signify the maximum, 75th percentile, median, 25th percentile, and minimum longevity values. Black diamonds (◆) indicate mean longevity and dots (•) indicate outliers. Wilcoxon tests with Benjamini & Hochberg multiple test corrections were used to determine statistical differences between parasitized and non-parasitized individuals. (b) Kaplan-Meier survivorship curves indicate the proportion of individuals alive on a given day. Log-Rank tests were used to determine statistical differences between parasitized and non-parasitized individuals.
Minnesota HealthSolutions Cellular Car Seat Study
ClinicalTrials.gov study NCT05552027. IPD Sharing: YES. Countries: 1. Publications: 7.
Photosynthetic data on experimentally warmed tree species in northern Minnesota, 2009-2011, used in the paper Reich et al Nature 2018.
To test how climate warming and variation in soil moisture supply will jointly influence photosynthesis of southern boreal forest tree species we measured gas exchange rates of 11 species in an open-air warming experiment at two sites in northern Minnesota, USA. The experiment ran for three years and used juveniles of 11 temperate and boreal tree species under ambient and seasonally warmed (+3.4 degC above- and belowground) conditions. We measured in situ light-saturated net photosynthesis (Anet) and leaf diffusive conductance (gs) on numerous days across the three growing seasons. Soil and plant temperatures and soil moisture were continuously measured from sensor arrays.
Microbial decomposition of 13-C labeled substrates across a gradient of root density, Marcell Experimental Forest, Minnesota, USA, 2014
Roots influence microbial decomposition of organic matter. We investigated how roots influence decomposition of a simple and complex carbon (C) substrate in mesocosms in a field experiment. Mesocosms were PVC lined with mesh that varied in size, which manipulated root access to soil and produced a gradient of root density. Mesocosms either received an injection of water (control), 13C labeled starch or 13C labeled leaf material. We collected gas samples from the mesocosms and analyzed 13C-CO2, microbial biomass, and enzyme activity. Our empirical data set was compared to a rhizosphere simulation model, CORPSE, to evaluate two alternative model hypotheses: 1) microbes are generalist decomposers, and 2) microbes have different affinities for substrates and may be influenced by roots differently. Our field experiment was conducted in 2014 at Marcell Experimental Forest, MN, USA. We installed mesocosms in May and after six weeks we injected water or substrates into soil. Gas samples were collected 1, 2, 3, 4, 5, 10, 20, and 40 days after injections. Mesocosms that received the starch substrate were harvested from the field 5 days after injections and those receiving leaf material were harvested 40 days after injections. Half of the water-control mesocosm were harvested 5 and 40 days after injections to pair with the substrate mesocosm harvests. Our results suggested decomposition of leaf material was more sensitive to root density than starch. The CORPSE model simulations with microbe-substrate affinity (hypothesis 2) showed a similar pattern to the field experiment. One way that roots influence microbial decomposition is through alleviating C limitation via exudates. Overall, our results suggest that microbial decomposition of starch is not a C limited process and that root density does not alter the rate of starch decomposition. On the other hand, decomposition of more complex substrates such as leaf tissue, which contains cellulose, hemi cellulose, and lignin, may be
Settlement Trees, Minnesota Level 0
We provide a Level 0 record of trees in Minnesota transcribed from Public Land Surveys conducted by surveyors from the General Land Office of the United States in the 1800s. Posts were set every half mile in townships that were typically 6 miles by 6 miles square. Surveyors recorded details about the one to four trees closest (but typically recorded information for the two closest trees) to the posts and included information about the tree name (taxonomic specificity ranged by surveyor), tree diameter (inches), and distance and bearing from the post. Our records include the tree information and the location of the posts from which the tree information came from. These Level 0 tree data were aggregated to the 8km grid resolution Level 1 product (see msb-paleon.26 package). That product was then statistically smoothed using a statistical model that accounts for zero-inflated continuous data with smoothing based on generalized additive modeling techniques and approximate Bayesian uncertainty estimates for the Level 2 products estimating aboveground biomass (msb-paleon.23), density (msb-paleon.24), and basal area (msb-paleon.25). The data processing steps and associated code are available in the GitHub repository: https://github.com/PalEON-Project/PLS_products. These products are used in the manucript, Paciorek et al., 2020, Statistically-estimated tree biomass, stem, and basal area for the upper Midwestern United States at the time of Euro-American settlement (https://www.biorxiv.org/content/10.1101/856526v1). This material is based upon work supported by the National Science Foundation under grants #DEB-1241874, 1241868, 1241870, 1241851, 1241891, 1241846, 1241856, 1241930.
Vertical Stratification of Peat Pore Water Dissolved Organic Matter composition in a peat bog in Northern Minnesota
<p>Currently peatlands represent a sink for carbon dioxide and source of atmospheric methane. It is unclear the impact that climate change will have on these systems. As such, a large-scale ecosystem manipulation (Spruce and Peatland Responses under Climatic and Environmental Change, SPRUCE) has been implemented at a peat bog (S1 bog) at the Marcel Experimental Forest (MEF), Minnesota, USA, to determine the effects of climatic forcing on ecosystem processes in northern peatlands. In this study, we aimed to: (i) identify peat pore water dissolved organic matter (DOM) composition as a function of depth before the initiation of the manipulation experiment and (ii) contribute to the knowledge of DOM chemistry and decomposition processes at the S1 bog. We found strong vertical resolution in DOM molecular composition and optical properties within the peat column at the S1 bog. Surface samples were dominated by inputs from surface vegetation. The mid-depth, 30-75cm was an area of high reactivity and increased microbial activity with diagenetic formation of many unique compounds such as polycyclic aromatic compounds (PAC) that contain both nitrogen and sulfur heteroatoms. These compounds were previously observed in coal-derived products and were assumed to be responsible for coal’s biological activity. Biological processes taking place at the intermediate depth zone of the peat profile at the S1 bog are assumed to be responsible for the formation of these heteroatomic PAC in our system. Conversely, these compounds might stem from black carbon and nitrogen from potential fires that occurred at the site in the past. Surface and deep DOM exhibited more similar characteristics suggesting the possibility of lateral and vertical advection of pore water from the surface to the deeper horizons. Our results highlight the importance of understanding processes that control DOM production and transformation with depth.</p> <p>Included: FTICR MS data and optical properties data</p>
Data for channel width of the Cannon River, Minnesota, 1938-2017
<p>Datasets analyzed and generated to measure channel width change of the Cannon and Straight Rivers, Minnesota. Includes aerial imagery and derived files to describe river geometry.</p> <p>Aerial imagery was originally accessed from USGS Earth Explorer and the University of Minnesota Minnesota Historical Aerial Photographs Online portal.</p> <p><strong>1939_ASCS.zip, 1951_USDA.zip, 1948_USGS.zip, 1964_ASCS.zip, 1974_USGS_mosaic.zip, 1974_single_images.zip, 1980_USGS.zip, 2002_NAIP.zip, 2010_NAIP.zip, 2017_NAIP.zip<br></strong></p> <p>These zip files contain aerial images from from 1938, 1951, 1958, 1964, 1974, 1980, 1991, 2002, 2010, and 2017, sorted into folders by year. Aerial images are included as raw downloaded images and (where applicable) georectified images. Ground control points used for rectification are included for rectified photos. For a number of years, a mosaicked image was created and is included.</p> <p><strong>shapefiles.zip</strong></p> <p>This zip file contains derived shapefiles to describe river geometry. The active channel of the river was digitized for each year of available imagery. This included the upper Cannon River (upstream of its confluence with the Straight River), the Straight River, and the lower Cannon (downstream of the confluence with the Straight River). </p> <p>From the active channel boundaries, the centerline and width was extracted using the Planform Statistics tool in Arcmap (Lauer, W. NCED Stream Restoration Toolbox-Channel Planform Statistics And ArcMap Project, National Center for Earth-Surface Dynamics). Width was extracted at 10 m intervals, and the data is stored in points at each 10 m interval. Meander migration between years was also calculated using the same toolbox. </p> <p>Sinuosity was calculated for channel segments of various lengths. </p>
Population structure and genetic variance among local populations of an non-native earthworm species in Minnesota, USA
<p>A variety of human activities have been identified as driving factors for the release and spread of invasive earthworm species in North America. Population genetic markers can help to identify locally relevant anthropogenic vectors and provide insights into the processes of population dispersal and establishment. We sampled the invasive European earthworm species <em>Lumbricus terrestris</em> at nine sites and several bait shops within the metropolitan area of Minneapolis-St. Paul in Minnesota, USA. We used microsatellite markers to infer genetic diversity and population structure, and 16S rDNA to address multiple introduction events, including bait dumping, which is a common source of <em>L. terrestris</em> introductions into the wild. Our results indicate multiple introductions but not from current bait dumping. Overall, genetic structure was low and earthworms >5000 m apart were genetically differentiated, except for one sampling location, indicating jump-dispersal followed by population establishment. Further, earthworms at one location north of Minneapolis established from one or few founder individuals, suggesting that earthworm invasions are ongoing. We therefore encourage further monitoring of earthworm populations using molecular markers, in order to disentangle the different human-related vectors contributing to the spread of earthworms and their establishment, which is essential to develop adequate management strategies.</p>
Fig. 4 in Spatio-temporal variation in prevalence and intensity of trematodes responsible for waterfowl die-offs in faucet snail-infested waterbodies of Minnesota, USA
Fig. 4. (continued).
Fig. 4 in Spatio-temporal variation in prevalence and intensity of trematodes responsible for waterfowl die-offs in faucet snail-infested waterbodies of Minnesota, USA
Fig. 4. (continued).
Fig. 4 in Spatio-temporal variation in prevalence and intensity of trematodes responsible for waterfowl die-offs in faucet snail-infested waterbodies of Minnesota, USA
Fig. 4. (continued).
Fig. 4 in Spatio-temporal variation in prevalence and intensity of trematodes responsible for waterfowl die-offs in faucet snail-infested waterbodies of Minnesota, USA
Fig. 4. (continued).
Fig. 4 in Spatio-temporal variation in prevalence and intensity of trematodes responsible for waterfowl die-offs in faucet snail-infested waterbodies of Minnesota, USA
Fig. 4. (continued).
Leaf radiocarbon data from two plant species in Saint Paul, Minnesota, USA 2020
<div> <div><span>Over half of Earth’s human population lives in urban areas, where pollution from carbon-based fossil fuel combustion threatens air quality and public health, and contributes significantly to the rapid increase of greenhouse gases. The isotopic composition of plant tissues can be used as a tool to estimate local variation in fossil fuel-derived carbon dioxide and thus contributions of fossil fuel combustion to the local atmosphere in urban anthromes. We present a case study that examines this variation in leaf modern radiocarbon content against a backdrop of historic discriminatory policies (here, ‘redlining’), within Saint Paul, Minnesota, USA. Radiocarbon values from leaves suggest varied distribution of atmospheric fossil fuel derived carbon emissions across Saint Paul greenspaces, with evidence of higher exposure near areas of high-volume traffic. Similar studies rarely measure plant material from both perennial and annual plants: here we report carbon values from leaves from a deciduous tree and an annual forb to compare function differences in carbon age. Isotopic carbon signatures in plant material capture evidence of emissions that may reveal unequal pollution exposure. </span></div> <div> </div> <div><span>Leaf samples were collected in August 2020 in Saint Paul, Minnesota, USA. Radiocarbon samples were run at UC-Irvine Keck AMS in Fall 2020. </span></div> <div> </div> <div><span>Accompanying article Heskel, Hrycyna et al. (2024) is published in <em>Plants, People, Planet</em> (specific information on the paper to be shared when available).</span></div> <div> </div> <div><strong><span>Plant Genus </span></strong><span><em>Fraxinus; Taraxacum</em> </span></div> <div><strong><span><span>HOLC: </span></span></strong><span><span>Identifying letter and color according to the sampling location based on historical Home Owner's Loan Corporation maps.</span></span></div> <div><strong><span><span>Site: </span></span></strong><span><span>Code for public park location. More specific details available in article. </span></span></div> <div><strong><span><span>Latitude: </span></span></strong><span><span>Sampling latitude </span></span></div> <div><strong><span><span>Longitude: </span></span></strong><span><span>Sampling longitude</span></span></div> <div><strong><span><span>Distance to major roadway (m): </span></span></strong><span><span>Distance from the sampling site to either a highway or major road (4 lanes or greater) in Saint Paul, in meters</span></span></div> <div><strong><span><span>Δ14C value: </span></span></strong><span><span>Measured value of leaf </span></span><span><span>Δ14C</span></span></div> <div><strong><span><span>Δ14C SD: </span></span></strong><span><span>Measured standard deviation of leaf </span></span><span><span>Δ14C</span></span></div> <div><strong><span><span>CO2-FF: </span></span></strong><span><span>amount of CO2 that is derived from fossil fuel combustion for each leaf sample. Details on this calculation is in the article. </span></span></div> <div> <table> <tbody> <tr> <td> </td> </tr> </tbody> </table> </div> <div> </div> </div>
Sources of coaster brook trout (Salvelinus fontinalis) revealed by genomic analysis of brook trout populations along Minnesota's shoreline with Lake Superior
<p>Knowledge of population-level relationships and how these relationships pertain to different life history forms is critical to developing effective management plans for native trout, char, and salmon. In the Lake Superior basin, identifying effective restoration strategies for coaster brook trout (<em>Salvelinus</em> <em>fontinalis</em>), a lake-inhabiting form of brook trout, is hampered by limited information on genetic connectivity and source-sink dynamics among brook trout populations. Here, we infer these relationships by surveying 8,178 single nucleotide polymorphisms in 234 brook trout from seven rivers along the Minnesota shoreline with Lake Superior, including from reaches above and below natural waterfalls that prevent upstream movement. We identified well-differentiated above-barrier populations that supply brook trout to below-barrier reaches. We also compared within-river brook trout to 26 coaster brook trout from Lake Superior. We identified at least four source populations for these coaster brook trout, three of which were located within rivers. Additionally, we estimated N<sub>E</sub> for within-river populations and detected a decline across recent generations, with the most recent estimates approaching critical thresholds. Finally, comparisons with 94 domestic brook trout representing nine hatchery strains revealed a lack of domestic introgression into wild populations, demonstrating the importance of natural reproduction to population persistence. Our results offer novel insights into sources of coaster brook trout and highlight the role of within-river populations in supporting the coaster life history. Management efforts focused on instream restoration may be more important to rehabilitating coaster brook trout than previously thought, and are urgently needed given the population-level conservation status reported here.</p>
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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)
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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.