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163 results for “USA&Canada”
Data for "The effects of weather and mobility on respiratory viruses dynamics before and during the COVID-19 pandemic in the USA and Canada".
<p>Epidemiological and mobility data analysed in the paper "The effects of weather and mobility on respiratory viruses dynamics before and during the COVID-19 pandemic in the USA and Canada".</p>
Figs 19-28 in Aradidae (Heteroptera) new to North America and Canada, with some additional provincial and state records for Canada and the USA
Figs 19-28. Aradus brevicornis. (19) holotype male, dorsal view; (20) lateral view; (21) brachypterous female (AK); (22-23) labels attached to holotype; (24-28) male genitalic structures; (24-26) left paramere, (27) left parandrium, (28) tergite IX. Scales: 1mm (19-21); 0.1mm (24-28).
Figs 1-11 in Aradidae (Heteroptera) new to North America and Canada, with some additional provincial and state records for Canada and the USA
Figs 1-11. (1) Aradus depressus, female (BC); (2) Aradus laeviusculus, male (BC); (3) Aradus apicalis, female (BC); (4-7) Aradus depressus male genitalic structures; 4-5 left paramere; 6 tergite IX, 7 left parandrium; (8-11) Aradus laeviusculus, male genitalic structures; (8-9) left paramere, (10) tergite IX, (11) left parandrium. Scales: 1mm (1-3); 0.1mm (4-11).
Spatial behavior and diet data for discrete-choice analyses: data observed and classified from GPS video camera collars worn by female members of the Fortymile Caribou Herd across Alaska, USA, and Yukon, Canada
<p>Competition for resources and space can drive forage selection of large herbivores from the bite through the landscape scale. Animal behavior and foraging patterns are also influenced by abiotic and biotic factors. Fine-scale mechanisms of density-dependent foraging at the bite scale are likely consistent with density-dependent behavioral patterns observed at broader scales, but few studies have directly tested this assertion. Here, we tested if space use intensity, a proxy of spatiotemporal density, affects foraging mechanisms at fine spatial scales similarly to density-dependent effects observed at broader scales in caribou. We specifically assessed how behavioral choices are affected by space use intensity and environmental processes using behavioral state and forage selection data from caribou (<i>Rangifer tarandus granti</i>) observed from GPS video-camera collars using a multivariate discrete-choice modeling framework. We found that the probability of eating shrubs increased with increasing caribou space use intensity and cover of <i>Salix</i> spp. shrubs, whereas the probability of eating lichen decreased. Insects also affected fine-scale foraging behavior by reducing the overall probability of eating. Strong eastward winds mitigated the negative effects of insects and resulted in higher probabilities of eating lichen. Lastly, caribou exhibited foraging functional responses wherein their probability of selecting each food type increased as the availability (% cover) of that food increased. Space use intensity signals of fine-scale foraging were consistent with density-dependent responses observed at larger scales and with recent evidence suggesting declining reproductive rates in the same caribou population. Our results highlight the potential risks of overgrazing on sensitive forage species such as lichen. Remote investigation of the functional responses of foraging behaviors provides exciting future applications where spatial models can identify high-quality habitats for conservation.</p>
FIGURE 5 in Neogene and early Pleistocene flora from Alaska, USA and Arctic/Subarctic Canada: New data, intercontinental comparisons and correlations
FIGURE 5. SEM micrographs of selected plant macrofossils from Mary Sachs gravel at Duck Hawk Bluffs, southern Banks Island. (A) Microdiptera/Mneme type (Lythraceae), seed, cross-section with germination valve to top, sample MRA 7-18-91-3, GSC 141399; note the absence of obvious dorsal furrows as seen on specimen from the Ballast Brook Formation (Fyles et al., 1994). Germination valve contains approximately ten rows of pits; (B) Parthenocissus? (Vitaceae), half of seed, ventral face showing one ventral infold, sample MRA 7-1-88-2, GSC 141400; (C) Microdiptera/Mneme type (Lythraceae), two joined seeds, ventral view with apex up, sample MRA 7-18-91-3, GSC 141401; note that the specimen on the right contains a fold on the wing, undoubtedly due to packing of the seeds in the capsule. This indicates how one of the characters used to distinguish Microdiptera from Mneme, relative development of the 'wings' is likely due to considerable variation even in seeds from the same plant and supports Tiffneyʼs (1981) conclusion about the dubious validity of the many named species; (D) Orchidaceae?, seed, sample FG 91-13a, GSC 141402; (E) Nigrella sp. (Melastomaceae), seed, from the site 3 type section of the Ballast Brook Formation (see Fyles et al. 1994), GSC 141421.
FIGURE 9 in Neogene and early Pleistocene flora from Alaska, USA and Arctic/Subarctic Canada: New data, intercontinental comparisons and correlations
FIGURE 9. SEM micrographs of selected plant fossils from Neogene deposits in the high terrace sections on Ellesmere Island, and Beaufort Formation, Meighen Island. (A) cf. Tubela (Betulaceae), seed, Riediger site, Ellesmere Island, Nunavut, sample FG 89-28a, GSC 141414; a specimen very similar to this one was dissected and found to contain an Alnus-type seed like those referred to A. tertiaria in Matthews, 1987; (B) Picea mariana/rubra type (Pinaceae), cross-section of needle showing resin canals (arrows), Beaver Peat, Ellesmere Island, Nunavut, sample FG- 88-51b, GSC 141415; (C) Thesium? (Santalaceae), seed, Prince Patrick Island, NWT, Green Bay beds, sample FG 87-10a/2, GSC 141416; (D) Calla sp. (Araceae), seed, Beaver Pond, Ellesmere Island, Nunavut, FG 88-8b, GSC 141417; (E) Unknown seed, Beaver Pond, Ellesmere Island, Nunavut, FG-88-8b, GSC 141418; (F) Comptonia sp. (Myricaceae), seed, Meighen Island, Nunavut, sample MRA 7-25-75-5, GSC 141419.
FIGURE 8 in Neogene and early Pleistocene flora from Alaska, USA and Arctic/Subarctic Canada: New data, intercontinental comparisons and correlations
FIGURE 8. Selected leaf fossils from the Fyles Leaf Beds site (17), Ellesmere Island, Nunavut. Scale bar equals 10 mm. (A–V) Betula spp. (Betulaceae). Note the diversity of types ranging from some similar to those from the dwarf shrub species, B. nana (e.g., D, G, O, Q), contrasted with others (e.g., S, U, V) which are more typical of high shrub and tree species of Betula; (W) Skeletonized leaf of Salix, very similar to the type seen in S. reticulata (Salicaceae). (X) Fragment of Vaccinium sp. (Ericaceae) leaf showing peculiar circular perforations; (Y) Skeletonized leaf of Salix sp. (Salicaceae); (Z) Photograph of leaves in situ in the alternating sand and organic layers of Fyles Leaf Beds. (AA– II) Dryas cf. octopetala type (Rosaceae).
FIGURE 1 in Neogene and early Pleistocene flora from Alaska, USA and Arctic/Subarctic Canada: New data, intercontinental comparisons and correlations
FIGURE 1. Distribution of sites and geographical features mentioned in the text. Siberian localities are from Baranova and Biske (1979). Shaded areas are shown in greater detail in Figures 2 and 4. Numbers refer to site codes used in Appendix 1 and throughout this paper.
FIGURE 7 in Neogene and early Pleistocene flora from Alaska, USA and Arctic/Subarctic Canada: New data, intercontinental comparisons and correlations
FIGURE 7. SEM micrographs of selected plant macrofossils from Mary Sachs gravel at Duck Hawk Bluffs, southern Banks Island, NWT. (A) Saxifraga sp. (Saxifragaceae), seed, sample FG 91-13a, GSC 141407; (B) Hydrangea?, sample FG 91-13a, GSC 141408; (C) Morus sp. (Moraceae), seed, sample MRA 7-23-85-2, GSC 141409; (D) Physalis sp. (Solanaceae), seed, sample MRA 7-7-88-3, GSC 141412; note in magnified view of the seed the pits in the lumina which distinguish Physalis from Solanum (Mai and Walther, 1988); (E) Teucrium sp. (Lamiaceae), seed, sample MRA 7-18-91-3, GSC 141413.
FIGURE 3 in Neogene and early Pleistocene flora from Alaska, USA and Arctic/Subarctic Canada: New data, intercontinental comparisons and correlations
FIGURE 3. SEM micrographs of Epipremnum from Banks Island. (A) Epipremnum seed, external view, Ballast Brook, "lower Beaufort Lignite", GSC 108847; (B) Epipremnum seed, internal view, Ballast Brook Formation, lower member, Sample 2, GSC 141420.
FIGURE 10 in Neogene and early Pleistocene flora from Alaska, USA and Arctic/Subarctic Canada: New data, intercontinental comparisons and correlations
FIGURE 10. Correlation diagram. See text for details. Black circles and sites in bold face are independently dated. Note scale change in the Miocene part of the table. Double pointed arrows indicate possible age range of the site. Shaded column between certain sets indicates sites in stratigraphic superposition. Grey dotted line (10) indicates that although the flora appears mid-Miocene, the flora and surrounding sediment may have been redeposited much later. (1) Lava Camp mine, western Alaska (5.9 Ma); (2) Lost Chicken mine, east central Alaska (2.9 Ma); (3) Niguanak site, northern Alaska; (4) Cone Bluff, Porcupine River, east central Alaska; (5) Canyon Village section, Porcupine River, east central Alaska (6.4 Ma, late Miocene); (6) Upper Ramparts site, Porcupine River, east central Alaska (16 Ma); (7) Circle Gravels, east central Alaska (early Pliocene); (8a and 8b) Chʼijeeʼs Bluff, Unit 1 (8a) and Unit 2 (8b), northern Yukon; (9a and 9b) Bluefish Section, northern Yukon; (10) Mary Sachs gravel, southern Banks Island, NWT; (11a and 11b) Ballast Brook Formation (11a) and Beaufort Formation (11b) at Ballast Brook, northern Banks Island, NWT; (12a and 12b) Prince Patrick Island, NWT; typical Beaufort deposits from many sites on the island (12a) and Green Bay beds (12b); (13) Melville Island, NWT; Beaufort Formation; (14) Bathurst Island, Nunavut; Beaufort Formation; (15a and 15b) Meighen Island, Nunavut; deposits below (15a) and above (15b) the approximately 3 Ma marine unit within the Beaufort Formation; (16) Beaver Pond locality, Strathcona Fiord, Ellesmere Island, Nunavut (3.9 Ma); (17) Fyles Leaf beds site near the Beaver Pond locality at Strathcona Fiord, Ellesmere Island, NWT (3.8 Ma); (18a) Riediger Site, Ellesmere Island, NWT; (18b) Site within 2 km of Riediger Site, Ellesmere Island, Nunavut; (19a) Rochon Site, Vendom Fiord region, Ellesmere Island, Nunavut; (19b) Typical high terrace sediments near the Rochon site on Vendom Fiord, Ellesmere Island, Nunavut; (20) Isachsen Site near the head of Makinson Inlet, Ellesmere Island, Nunavut; (21) Capping gravels and sands at Geodetic Hills Eocene locality, Axel Heiberg Island, Nunavut; (22) West River site near Horton River upland, northern mainland, coast, NWT; (23) Plateau Cap gravels, Horton upland, northern mainland coast, NWT; (24) Remus Creek site, Fosheim Peninsula, Ellesmere Island, NWT; (25) South Bay site, Fosheim Peninsula, Ellesmere Island, Nunavut; (26) Fosheim Dome, Fosheim Peninsula, Ellesmere Island, Nunavut.
FIGURE 6 in Neogene and early Pleistocene flora from Alaska, USA and Arctic/Subarctic Canada: New data, intercontinental comparisons and correlations
FIGURE 6. SEM micrographs of selected plant macrofossils from the Neogene on the Canadian Arctic Archipelago. (A) Rubus sp. (Rosaceae), seed, Mary Sachs gravel, sample MRA 7-7-88-1, GSC 141422; (B) Ludwigia sp. (Onagraceae), seed, Mary Sachs gravel, sample FG 91-13a, GSC 141403; (C) Verbena sp. (Verbenaceae), seed, Prince Patrick Island, NWT, Beaufort Formation, GSC 141404; (D) Unknown seed; Beaver Pond, Ellesmere Island, Nunavut, sample FG 88-8b, GSC 141405; (E) Cross-section of seed of the same type as shown in D, Beaver Pond, sample FG 88-8b, GSC 141406.
Latest Ordovician (Hirnantian) iodine to calcium ratio (I/Ca) data for Anticosti Island (Quebec, Canada) and Copenhagen Canyon (Nevada, USA)
<p>This spreadsheet contains redox proxy data (I/Ca) associated with the manuscript "Depth-dependent Late Ordovician anoxia related to a reorganization of ocean circulation", for the Latest Ordovician (latest Hirnantian, Late Ordovician Mass Extinction phase #2 – LOME 2; ca. 444 million years ago) in Anticosti Island (Quebec, Canada) and Copenhagen Canyon (Nevada, USA). The reader is referred to the associated paper for a description of the methods.</p>
Spatial behavior and diet data for discrete-choice analyses: data observed and classified from GPS video camera collars worn by female members of the Fortymile Caribou Herd across Alaska, USA, and Yukon, Canada
Open the record for dataset details and reuse information.
Niagara Falls, New York, USA & Canada
Niagara Falls, New York, USA & Canada Niagara Falls is a group of three waterfalls at the southern end of Niagara Gorge, spanning the border between the province of Ontario in Canada and the state of New York in the United States. The largest of the three is Horseshoe Falls, also known as Canadian Falls, which straddles the international border of the two countries.The smaller American Falls and Bridal Veil Falls lie within the United States. Bridal Veil Falls is separated from Horseshoe Falls by Goat Island and from American Falls by Luna Island, with both islands situated in New York. https://en.wikipedia.org/wiki/Niagara_Falls G Source: Objaverse 1.0 / Sketchfab
Dissolved calcium and pH raster layers for freshwater environments in Canada and the USA
<p>Calcium concentration and pH are key parameters that are linked to multiple chemical and biological processes in freshwater environments. This dataset presents high-resolution (10 x 10 km) interpolated raster layers for these two variables across Canada and the continental USA. These layers were generated via spatial interpolation (Kriging with a fixed zero nugget) after comparison of multiple interpolation methods, using water quality data for lakes and rivers compiled from multiple sources. This is the first time that such data have been made available at this scale and resolution, providing a valuable resource for research, including projects evaluating risks from environmental change, pollution, and invasive species. </p>
Output and data used in publication "Glacial isostatic adjustment modulates lateral migration rate and morphology of the Red River (North Dakota, USA, and Manitoba Canada)" in GRL
<p>Here we provide the output sea level used to calculate change in slope along studied rivers as well as locations of meanders and cutoffs. Please see the read.me file and publication for details. </p>
Dissolved calcium and pH raster layers for freshwater environments in Canada and the USA
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List of tissue specimens of Hipposideros spp. used for cytochrome b sequencing and phylogenetic inference, with geographical data. Voucher refers to the location and/or accession number of the voucher, and tissue collection refers to the collection where the tissue is kept, and accession or collector numbers. Acronyms are as follows: Estación Biológica de DoZana, Sevilla, Spain (EBD), South Australia Museum, Adelaide, Australia (SAM), Senckenberg Museum, Frankfurt am Main, Germany (SMF), Instituto de Ecología, Xalapa, México (IEX), Louisiana State University, Baton Rouge, Louisiana, USA (LSU), Charles M. Francis, Canadian Wildlife Service, Ottawa, Ontario, Canada (CMF), Lao Department of Forestry, Vientiane, Lao PDR, no catalogued (LAO). Next column indicates GenBank accession numbers. More information about the specimens is available in the GenBank records in A new species of bat of the Hipposideros bicolor group (Chiroptera: Hipposideridae) from Central Laos, with evidence of convergent evolution with Sundaic taxa
List of tissue specimens of Hipposideros spp. used for cytochrome b sequencing and phylogenetic inference, with geographical data. Voucher refers to the location and/or accession number of the voucher, and tissue collection refers to the collection where the tissue is kept, and accession or collector numbers. Acronyms are as follows: Estación Biológica de DoZana, Sevilla, Spain (EBD), South Australia Museum, Adelaide, Australia (SAM), Senckenberg Museum, Frankfurt am Main, Germany (SMF), Instituto de Ecología, Xalapa, México (IEX), Louisiana State University, Baton Rouge, Louisiana, USA (LSU), Charles M. Francis, Canadian Wildlife Service, Ottawa, Ontario, Canada (CMF), Lao Department of Forestry, Vientiane, Lao PDR, no catalogued (LAO). Next column indicates GenBank accession numbers. More information about the specimens is available in the GenBank records
FIGURE 7 in New Cimbrophlebiidae (Insecta: Mecoptera) from the Early Eocene at McAbee, British Columbia, Canada and Republic, Washington, USA
FIGURE 7. Cimbrophlebia sp. A, UCCIPR L-18 F-998. A, photograph (part); B, drawing (part, no additional information on counterpart); C, reconstruction of the hypothesized complete size and shape of C. sp. A wing (top) based on that of C. flabelliformis (bottom). A, B to scale = 1 cm; C to scale = 1 cm.
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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.