Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
79
datasets available to search
ShareScore release 0.7.1
Dataset results
79 results for “Black bear”
Ecological niche models for American black bear, Rafinesque's big-eared bat, and timber rattlesnake
<p>This data set contains rasters that are predictive environmental suitability maps for three wildlife species: the American black bear (<i>Ursus americanus</i>), Rafinesque's big-eared bat (<i>Corynorhinus rafinesquii</i>), and Timber rattlesnake (<i>Crotalus horridus</i>). Rasters for each species include: individual prediction maps for each of 5 ENMs (GBM: generalized boosting model, GLM: generalized linear model, MARS: multivariate adaptive regression spline, MX: maximum entropy, and RF: random forest), as well as the ensemble prediction map from all five ecological niche models (ENMs).</p>
Least-cost habitat linkages for American black bear, Rafinesque's big-eared bat, and timber rattlesnake.
<p>This data set contains 3 shapefiles and associated files that map linkages, which are least-cost paths between adjacent habitat cores for three wildlife species in the Southeastern U.S. The species are: the American black bear (Ursus americanus), Rafinesque's big-eared bat (Corynorhinus rafinesquii), and Timber rattlesnake (Crotalus horridus). We mapped habitat cores based on c. 2006 land cover, then used LinkageMapper software to identify least-cost paths between them, and buffered the least-cost paths by 2.5 km using ArcGIS, for a total width of 5 km. The buffered least-cost paths are the linkages provided here. The attribute tables for these shapefiles contain fields that describe the importance of each linkage to the overall habitat connectivity network, contemporary and future average modeled habitat suitability within the linkage, change in average proportion suitable, percent of urban land within the linkage, percent of linkage that is protected for conservation, and categorical values for climate threat, whether the linkage was designated as highly important, protection status, and future urbanization threat.</p>
Fig. 1. Phylogenetic relationship among the Enterocytozoon bieneusi groups. The relationship between the E in New genotypes and molecular characterization of Enterocytozoon bieneusi in captive black bears in China
Fig. 1. Phylogenetic relationship among the Enterocytozoon bieneusi groups. The relationship between the E. bieneusi genotypes identified in this study and other known genotypes deposited in GenBank was inferred by neighbor-joining analysis of ITS sequences based on genetic distance using the Kimura-2-parameter model. The numbers on the branches represent percent bootstrapping values from 1000 replicates, with more than 50% shown in the tree. Each sequence is identified by its accession number, genotype designation, and host origin. Genotypes marked with black rhombuses and black triangles are novel and known genotypes identified in this study, respectively.
Fig. 2b in Tick abundance and life-stage segregation on the American black bear (Ursus americanus)
Fig. 2b. Diagram of tick segregation on American black bears, based on 17 body regions surveyed on black bears from June 2018–December 2019 in Pennsylvania, USA. Darker colors indicate higher percentages of adult ticks and lower percentages of immature ticks observed and lighter colors indicate lower percentages of adult ticks and higher percentages of immature ticks observed; based on percentages of adult ticks out of all ticks recorded in that body region (table). Percentages based on bears that had at least one tick recorded in the surveyed body locations. Body region descriptors- A: ear; B: cheek; C: neck; D: upper spine; E: lower spine; F: chest; G: front outer leg; H: front inner leg; I: front axillary region; J: front inner toes; K: stomach; L: hip; M: hind outer leg; N: hind inner leg; O: hind axillary region; P: hind inner toes; Q: muzzle. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)
Fig. 3 in Tick abundance and life-stage segregation on the American black bear (Ursus americanus)
Fig. 3. Photograph of a bear with severe sarcoptic mange. Note the high loss of fur and thickened skin on the ears, face, and along the sides of the body and higher amounts of fur remaining along the spine and lower limbs. This pattern of hair loss and thickened crusting skin is typical for bears with moderate to severe cases of sarcoptic mange in Pennsylvania, with mild cases also frequently exhibiting higher hair loss and clinical signs of sarcoptic mange on the face and front regions of the body.
Fig. 2a in Tick abundance and life-stage segregation on the American black bear (Ursus americanus)
Fig. 2a. Diagram of tick abundance on American black bears, based on 17 body regions surveyed on black bears from June 2018–December 2019 in Pennsylvania, USA. Figure colors based on percentage of observed tick presence out of all observations of that body region (table), to represent where ticks were most frequently observed within the body regions surveyed. Darker colors indicate higher percentages of observations when ticks were present and lighter colors indicate lower percentages of observations that had ticks present in that body region. Body location descriptors- A: ear; B: cheek; C: neck; D: upper spine; E: lower spine; F: chest; G: front outer leg; H: front inner leg; I: front axillary region; J: front inner toes; K: stomach; L: hip; M: hind outer leg; N: hind inner leg; O: hind axillary region; P: hind inner toes; Q: muzzle. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)
Fig. 1 in Tick abundance and life-stage segregation on the American black bear (Ursus americanus)
Fig. 1. Map of capture locations for bears surveyed for tick burden in Pennsylvania from June 2018–December 2019.
Text-fig. 2. Staniantsi open cast mine seen from south-east (a) and in a more detailed view from the south (b). Most of the studied castorid material originates from the black coal bearing areas (swamp facies). in Castor-Like Postcranial Adaptation In An Uppermost Miocene Beaver From The Staniantsi Basin (Nw Bulgaria)
Text-fig. 2. Staniantsi open cast mine seen from south-east (a) and in a more detailed view from the south (b). Most of the studied castorid material originates from the black coal bearing areas (swamp facies).
Data from: Large carnivores persisting in a human-dominated landscape: Suitable habitat and connectivity for Asiatic black bears in China
Open the record for dataset details and reuse information.
Data from: Residential development reduces black bear (Ursus americanus) opportunity to scavenge cougar (Puma concolor) killed prey
Open the record for dataset details and reuse information.
Ecological niche models for American black bear, Rafinesque's big-eared bat, and timber rattlesnake
Open the record for dataset details and reuse information.
Linking spatial variations in life-history traits to environmental conditions across American black bear populations
Open the record for dataset details and reuse information.
Least-cost habitat linkages for American black bear, Rafinesque's big-eared bat, and timber rattlesnake.
Open the record for dataset details and reuse information.
Locations of black bear (Ursus americanus) reproduction in Nevada from camera-trap data
<p>Understanding factors creating species range boundaries is a fundamental goal of ecology and biogeography. American black bears recolonized the western Great Basin from the Sierra Nevada in the late 1900s but this expansion has not proceeded further into the Great Basin despite the presence of suitable habitat. We deployed 100 camera traps across the occupied range of black bears in the U.S. state of Nevada and tracked bear detections across 3 years. A scent lure was applied in camera trap viewsheds to increase bear detections. We classified detections of bear cubs separately from detections of only adult bears, to serve as an indicator of black bear reproduction occurring at sites. Data are provided in the format necessary for a analysis with multistate occupancy model. Analysis of these data revealed low incidence of reproduction at the periphery of black bear range in the western Great Basin, which likely contributes to range boundary formation.</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>
MPG Black Bear research encounter histories
<p>Wildlife pedigrees provide insights into ecological and evolutionary processes. DNA obtained from non-invasively collected hair is often used to determine individual identities for pedigrees and other genetic analyses. However, detection rates associated with some non-invasive DNA studies can be relatively low and genetic data do not provide information on individual birth year. Supplementing hair DNA stations with video cameras should increase individual detection rate, assuming accurate identification of individuals via video data. Video data can also provide birth year information for individuals captured as young of the year, which can enrich population-level pedigrees. We placed video cameras at hair stations and combined genetic and video data to reconstruct an age-specific, population-level pedigree of wild black bears during 2010-2020. Combining individual birth year with mother-offspring relatedness, we also estimated litter size, interlitter interval, primiparity, and fecundity. We used the Cormack-Jolly-Seber model in Program Mark to evaluate the effect of maternal identity on offspring apparent survival. We compared model rankings of apparent survival and parameter estimates based on combined genetic and video data with those based on only genetic data. We observed 42 mother-offspring relationships. Of these, 21 (50%) would not have been detected had we used hair DNA alone. Moreover, video data allowed for the cub and yearling age classes to be determined. Mean annual fecundity was 0.42 (95% CI: 0.27, 0.56). Maternal identity influenced offspring apparent survival, where offspring of one mother experienced significantly lower apparent survival (0.39; SE = 0.15) than that of offspring of four other mothers (0.89-1.00; SE = 0.00–0.06). We video-documented cub abandonment by the mother whose offspring experienced low apparent survival, indicating individual behaviors (e.g., maternal care) may scale up to affect population-level parameters (e.g., cub survival). Our findings provide insights into evolutionary processes and are broadly relevant to wildlife ecology and conservation.</p>
Capture history of Asiatic black bear from Himachal Pradesh, India
<p><span>Robust population estimation of rare or elusive threatened species lacking distinct identifiable features poses a challenge in the field of conservation and management. The Asiatic black bear (<em>Ursus thibetanus</em>) is one such species. Methodological frameworks—such as radiotelemetry, genetic sampling, and camera-trapping—though crucial and advantageous, sometimes require additional information through invasive methods for individual identification</span><span>. </span><span>In this study, w</span><span>e estimated the population density of Asiatic black bear in 2 protected areas in the Indian Himalayan Region without information on individual identification. We conducted the study through a spatial capture–recapture framework using camera traps</span><span> in the summer during May–July 2018 in Daranghati Wildlife Sanctuary (WLS) and May–July 2019 in Rupi Bhaba WLS</span><span>. </span><span>Using the recently developed </span><span>Spatial Presence–Absence model, we estimated g0 (detection probability), σ (scale or movement parameter related to home range of the species), and N (population size) of </span><span>Asiatic black bears</span><span> from the camera-trap data using a Bayesian framework. We estimated a population density of 2.5 individuals/100 km2 (95% Credible Interval = 1.42–9.63 individuals/100 km2) from Daranghati WLS and 0.3 individuals/100 km2 (95% Credible Interval = 0.2–0.7 individuals/100 km2) from Rupi Bhaba WLS. Abundance estimates produced by extrapolating these densities were 11 </span><span>Asiatic black bear</span><span> individuals (95% Credible Interval = 4–27) from Daranghati WLS and 2 </span><span>Asiatic black bear</span><span> individuals (95% Credible Interval = 1–3) from Rupi Bhaba WLS. This is the first population estimate of</span><span> Asiatic black bear</span><span> from the Indian Himalaya without individual identification. </span><span>We recommend that this method, which provides minimal sampling bias and ease of sampling, can be replicated in other mountainous landscapes for a robust density estimation of this species.</span></p>
Data for: Coexistence or conflict: black bear habitat use along an urban-wildland gradient
<p class="MsoNormal">The urban-wildland interface is expanding and increasing the risk of human-wildlife conflict. Some wildlife species adapt to or avoid living near people, while others select for anthropogenic resources and are thus more prone to conflict. To promote human-wildlife coexistence, wildlife and land managers need to understand how conflict relates to habitat and resource use in the urban-wildland interface. We investigated black bear (<em>Ursus americanus</em>) habitat use across a gradient of human disturbance in a North American hotspot of human-black bear conflict. We used camera traps to monitor bear activity from July 2018 to July 2019, and compared bear habitat use to environmental and anthropogenic variables and spatiotemporal probabilities of conflict. Bears predominantly used areas of high vegetation productivity, avoided higher human densities, and increased their nocturnality near people. Still, bears used more high-conflict areas in summer and autumn, specifically rural lands with ripe crops. Our results suggest that bears are generally modifying their behaviours in the urban-wildland interface through spatial and temporal avoidance of humans, which may facilitate coexistence. However, conflict still occurs, especially in autumn when hyperphagia and peak crop availability attract bears to abundant rural food resources. To improve conflict mitigation practices, we recommend targeting seasonal rural attractants such as with pre-emptive fruit picking, bear-proof compost containment, and other forms of behavioural deterrence. By combining camera-trap monitoring of a large carnivore along an anthropogenic gradient with conflict mapping, we provide a framework for evidence-based improvements in human-wildlife coexistence.</p>
Data from: Female American black bears do not alter space use or movements to reduce infanticide risk
Open the record for dataset details and reuse information.
Spatially explicit genetic capture-recapture data from black bears in Ontario, Canada
Open the record for dataset details and reuse information.
ScienceDex guides
Understand access before you commit
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.