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5,108 results for “North America”
Journey North - Hummingbird observations by volunteer community scientists across Central and North America (1996-2020)
This data package contains hummingbird migration data (1996 - 2020) across North and Central America collected by 30,703 community scientists for Journey North, a crowdsourced participatory science program of the University of Wisconsin-Madison Arboretum. The Journey North Hummingbird Project is an ongoing study of hummingbird phenology conducted at broad spatial and temporal scales. Since 1996, community scientists have tracked first arrival dates and breeding and feeding behavior as well as the onset of fall migration and presence of hummingbird species throughout the winter months in the United States. Focal species are the Ruby-throated Hummingbird (Archilochus colubris) and Rufous Hummingbird. However, observational data is also available for Broad-tailed Hummingbird (Selasphorus platycercus), Black-chinned Hummingbird (Archilochus alexandri), Calliope Hummingbird (Selasphorus calliope), Costa's Hummingbird (Calypte costae), Anna’s Hummingbird (Calypte anna), Allen’s Hummingbird (Selasphours sasin). Observers also provide estimates of the number of birds sighted. However, observers do not follow standardized methods for counting species observed. Observers do not observe at set times of the day, do not repeat observations regularly, and are not required to provide the length of time during which a specified number of species observed were counted. Therefore, it is recommended that this dataset be analyzed to indicate presence, not abundance. Additional contextual information is provided as text in the comments field of the dataset. The Journey North Hummingbird Project dataset is hosted by the University of Wisconsin-Madison Shared Web Hosting Service.
Journey North - Monarch Butterfly and Milkweed observations by volunteer community scientists across Central and North America (1996-2020)
This data package contains monarch migration data (1996 - 2020) across North America collected by 42,518 community scientists for Journey North, a crowdsourced participatory science program of the University of Wisconsin-Madison Arboretum. The Journey North Monarch and Milkweed project is an ongoing study of monarch migration phenology conducted at broad spatial and temporal scales. Since 1996, community scientists have tracked first arrival dates and breeding and feeding behavior as well as the onset of fall migration, fall roosts, and peak migration events. Community scientists have also tracked the first emergence of milkweed in the spring and the presence of milkweed across the landscape during the summer, fall-winter months. The focal species is the Monarch Butterfly, Danaus plexippus. Community scientists indicate when known milkweed species in submitted comments. Journey North data is observational and often opportunistic in nature. Observers do provide estimates of the number of adult monarch butterflies sighted during an observation. However, observers do not follow standardized methods for counting species observed. Observers do not observe at set times of the day; do not repeat observations regularly, and are not required to provide the length of time during which a specified number of species observed were counted. Therefore, it is recommended that this dataset be analyzed to indicate presence, not abundance. Additional contextual information is provided as text in the comments field of the dataset. The Journey North Monarch and Milkweed project dataset is hosted by the University of Wisconsin-Madison Shared Web Hosting Service.
The role of fire in the carbon dynamics of the boreal forest I. - Response of area burned to changing climate in western boreal North America using a Multivariate Adaptive Regression Splines (MARS) approach (2003-2100).
The boreal forest contains large reserves of carbon, and across this region wildfire is a common occurrence. To improve the understanding of how wildfire influences the carbon dynamics of this region, methods were developed to incorporate the spatial and temporal effects of fire into the Terrestrial ecosystem Model (TEM). The historical role of fire on carbon dynamics of the boreal region was evaluated within the context of ecosystem responses to changing atmospheric CO2 and climate. These results show that the role of historical fire on boreal carbon dynamics resulted in a net carbon sink; however, fire plays a major role in the interannual and decadal scale variation of source/sink relationships. To estimate the effects of future fire on boreal carbondynamics, spatially and temporally explicit empirical relationships between climate andfire were quantified. Fuel moisture, monthly severity rating, and air temperature explained a significant proportion of observed variability in annual area burned. These relationships were used to estimate annual area burned for future scenarios of climate change and were coupled to TEM to evaluate the role of future fire on the carbon dynamics of the North American boreal region for the 21st Century. Simulations with TEM indicate that boreal North America is a carbon sink in response to CO2 fertilization, climate variability, and fire, but an increase in fire leads to a decrease in the sink strength. While this study highlights the importance of fire on carbon dynamics in the boreal region, there are uncertainties in the effects of fire in TEM simulations. These uncertainties are associated with sparse fire data for northern Eurasia, uncertainty in estimating carbon consumption, and difficulty in verifying assumptions about the representation of fires that occurred prior to the start of the historical fire record. Future studies should incorporate the role of dynamic vegetation to more accurately represent post-fire successional pr
Figs. 21-24 in On Hesperocranum, A New Spider Genus from Western North America (Araneae, Liocranidae)
Figs. 21-24. Hesperocranum rothi, new species, male palp. 21. Prolateral view. 22. Retrolateral view. 23. Prolateral view of embolar region. 24. Ventral view.
Figs. 17-20 in On Hesperocranum, A New Spider Genus from Western North America (Araneae, Liocranidae)
Figs. 17-20. Hesperocranum rothi, new species, female. 17. Chelicerae and eye region, anterior view. 18. Eye region, dorsal view. 19. Epigynum, ventral view. 20. Posterior median spinnerets, anterior end towards top of photo. Original magnification = 700 x.
Figures 7–13 in Two new species and two new combinations in Saphenista Walsingham, 1914 from western North America (Lepidoptera: Tortricidae)
Figures 7–13. Genitalia of Saphenista. 7) Male of S. bartellae, USNM slide 150,181. 8) Male of S. powelli, USNM slide 153,767. 9) Male of S. latipunctana, MGP slide 349. 10) Male of S. dilutana, USNM slide 150,185. 11) Female of S. bartellae, USNM slide 150,182. 12) Female of S. powelli, USNM slide 153,565. 13) Female of S. latipunctana, EME slide 2762.
FIG. 6. — Cynelos stenos n in A new species of the amphicyonid carnivore Cynelos Jourdan, 1862 from the early Miocene of North America
FIG. 6. — Cynelos stenos n. sp., UNSM 44723, Runningwater Formation, Runningwater Quarry (early Hemingfordian), Box Butte Co., Nebraska. Palatal view of the cranium with right P2-M3 (broken P1) and left P3-M3, partial P2, and P1 alveolus. Plant roots have eroded the enamel on the right M1-M2. Scale bar: 3 cm.
FIG. 5. — Cynelos stenos n in A new species of the amphicyonid carnivore Cynelos Jourdan, 1862 from the early Miocene of North America
FIG. 5. — Cynelos stenos n. sp., UNSM 44723, Runningwater Formation, Runningwater Quarry (early Hemingfordian), Box Butte Co., Nebraska. Right and left associated mandibles. Scale bar: 5 cm.
FIG. 2 in A new species of the amphicyonid carnivore Cynelos Jourdan, 1862 from the early Miocene of North America
FIG. 2. — Dental measurements for species of the amphicyonid Cynelos Jourdan, 1862. Abbreviations: a, greatest length of p4; b, m1 trigonid length from mesial edge of paraconid to central distal base of protoconid; c, greatest length of m1; d, greatest width of the m1 talonid (also for m2); e, greatest width of the m1 trigonid (also for m2); f, distal width of p4 (and for p2-p3).
FIG. 1 in A new species of the amphicyonid carnivore Cynelos Jourdan, 1862 from the early Miocene of North America
FIG. 1. — Dental measurements for species of the amphicyonid Cynelos Jourdan, 1862. Abbreviations: a, greatest length of P4 from mesial base of paracone to distal limit of metastylar blade; b, greatest width of P4 from lingual border of protocone to labial base of paracone; c, greatest labial length of M2; d, greatest M2 width from paracone to lingual cingulum; e, greatest labial length of M1; f, greatest M1 width from paracone to lingual cingulum.
FIG. 9 in A new species of the amphicyonid carnivore Cynelos Jourdan, 1862 from the early Miocene of North America
FIG. 9. — Bivariate graph of m1 dimensions (in mm) of Cynelos helbingi (Dehm, 1950) (Wintershof-West, southern Germany) relative to m1 of Cynelos stenos n. sp. (UNSM 44723, western Nebraska). Cynelos helbingi measurements from Dehm (1950).
FIG. 8 in A new species of the amphicyonid carnivore Cynelos Jourdan, 1862 from the early Miocene of North America
FIG. 8. — Variation in size and occlusal form of m1, m2, and m3 of Cynelos helbingi (Dehm, 1950), Wintershof-West, southern Germany (from Dehm 1950: figs 18, 21-25): A, B, holotype m1-m2 of the species, occlusal and lingual views (12293); C, D, large m1 in occlusal and labial views (12315); E, F, small m1, occlusal and labial views (12338); G, right m2, intermediate size (12842); H, right m2, large (12836); I, left m2, small (12834), all m2s in occlusal view. Catalog numbers from Sammlung München 1937 II. Scale bar: 1 cm.
FIG. 4. — Cynelos stenos n in A new species of the amphicyonid carnivore Cynelos Jourdan, 1862 from the early Miocene of North America
FIG. 4. — Cynelos stenos n. sp., UNSM 44723, Runningwater Formation, Runningwater Quarry (early Hemingfordian), Box Butte Co., Nebraska. Cranium in dorsal view. Note the narrow cranium, constricted rostrum, broad frontal region, and tall thin sagittal crest above the small braincase. Scale bar: 5 cm.
FIG. 7 in A new species of the amphicyonid carnivore Cynelos Jourdan, 1862 from the early Miocene of North America
FIG. 7. — Variation in size and occlusal form of P4, M1, and M2 of Cynelos helbingi (Dehm, 1950), Wintershof-West, southern Germany (from Dehm 1950: figs 29, 30; 35-37, 39): A, P4 mesial border indented, protocone prominent (12395); B, P4 mesial border not indented, protocone recessed (12387); C, large M1, labial border long (12347); D, small M1(12361); E, M2, mesial border straight, metacone reduced (12376); F, M2, mesial border irregular, metacone not as reduced (12379). Catalog numbers from Sammlung München 1937 II. Scale bar: 1 cm.
Figure 4 in Phorodon cannabis Passerini (Hemiptera: Aphididae), a newly recognized pest in North America found on industrial hemp
Figure 4. Phorodon humuli (Schrank). a) Apterous vivipara photomicrograph. b) Antennal segments II–VI. c) Siphunculus. d) Head and antennal segment I (left side dorsum; right side venter). e) Cauda dorsum.
Figure 1. Phorodon cannabis Passerini. a in Phorodon cannabis Passerini (Hemiptera: Aphididae), a newly recognized pest in North America found on industrial hemp
Figure 1. Phorodon cannabis Passerini. a) Apterae with color form exhibited indoors and outdoors through midsummer. Photograph taken on August 4, 2017. b) Hemp leaf heavily infested with P. cannabis. Photograph taken on September 11, 2017. c) Mixed stages, including alate forms. Photograph taken on August 28, 2017. d) Aphids developing on stem of hemp. Photograph taken on September 31, 2017.
Figure 2. Phorodon cannabis Passerini. a in Phorodon cannabis Passerini (Hemiptera: Aphididae), a newly recognized pest in North America found on industrial hemp
Figure 2. Phorodon cannabis Passerini. a) Apterous vivipara photomicrograph. b) Antennal segments II–VI. c) Siphunculus. d) Head and antennal segment I (left side dorsum; right side venter). e) Cauda dorsum. f) Enlargement of dorsal abdominal spatulate setae.
Maps 1–12 in New state records for Coniopterygidae (Neuroptera) with an updated list of species in North America north of Mexico
Maps 1–12. State-level distribution of Coniopterygidae spp. 1) Aleuropteryx arceuthobii. 2) Aleuropteryx arizonica. 3) Aleuropteryx cupressi. 4) Aleuropteryx dragoonica. 5) Aleuropteryx juniperi. 6) Aleuropteryx knowltoni. 7) Aleuropteryx longipennis. 8) Aleuropteryx maculipennis. 9) Aleuropteryx megacornis. 10) Aleuropteryx punctata. 11) Aleuropteryx simillima. 12) Aleuropteryx unicolor.
Maps 49–57 in New state records for Coniopterygidae (Neuroptera) with an updated list of species in North America north of Mexico
Maps 49–57. State-level distribution of Coniopterygidae spp. 49) Semidalis deserta. 50) Semidalis flinti. 51) Semidalis frommeri. 52) Semidalis inconspicua. 53) Semidalis pseudouncinata. 54) Semidalis tricornis. 55) Semidalis vicina. 56) Semidalis wallacei. 57) Semidalis xerophila.
Maps 25–36 in New state records for Coniopterygidae (Neuroptera) with an updated list of species in North America north of Mexico
Maps 25–36. State-level distribution of Coniopterygidae spp. 25) Coniopteryx dorsicornis. 26) Coniopteryx fitchi. 27) Coniopteryx forcipata. 28) Coniopteryx latipalpis. 29) Coniopteryx mexicana. 30) Coniopteryx minuta. 31) Coniopteryx palpalis. 32) Coniopteryx quadricephala. 33) Coniopteryx simplex. 34) Coniopteryx simplicior. 35) Coniopteryx tineiformis. 36) Coniopteryx westwoodi.
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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)
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.