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1,604 results for “Wintering”
Functional reorganization of North American wintering avifauna
<p>This database contains all data used to analyzed temporal trends of wintering bird communities in the last five decades in the United States. </p> <p> </p> <p><strong>Description </strong></p> <p>Bird Abundance</p> <p>We used data the Audubon CBC, a bird monitoring program initiated in 1900 focus in identify and count wintering birds within circles of 24-km diameter. We focused our analysis on 1967-2018 and 1,183 locations in the United States. Considering the number of individuals observed per species in the different locations over time, we used N-mixture models to estimate abundance corrected for species imperfect detection. </p> <p>Bird Traits</p> <p>We used four trait categories (i.e., body mass, morphological characteristics, diet and foraging niche) to classified all species observed over time. The trait data were collected from Tobias et al. (2022) and Wilman et al. (2014).</p> <p>References:</p> <p>Tobias, J.A., Sheard, C., Pigot, A.L., Devenish, A.J.M., Yang, J., Sayol, F., et al. (2022). AVONET: morphological, ecological and geographical data for all birds. Ecol Lett. 23, 581- 597.</p> <p>Wilman, H., Belmaker, J., Simpson, J., de la Rosa, C., Rivadeneira, M.M., Jetz, W. (2014). EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95, 2027-2027.</p> <p><strong>Data </strong></p> <p>Data are provided in the form of R Data Serialization (.rds) and comma-separated files (.csv). These data were grouped in two categories: </p> <p>List of files </p> <p>File: commMats_byYear.rds (This file is a list with 52 dataframes nested, which contain the abundance estimates per species in each location).</p> <p>File: Coords.rds (This file contains the geographical coordinates of each location) </p> <p>File: climate.csv (This file contains abiotic data, such as precipitation, maximun, minimum, and mean temperatures per location over time).</p> <p>File: cwm_full.rds (This file contains the Community Weight Mean "CWM" results)</p> <p>File: DB_FIndex.rds (This file contains all the functional indices estimates in each location over time)</p> <p>File: elevation_data.csv (This file contains the elevation data extracted per location)</p> <p>File: mcfric_max_minTemp.rds (This file contains model results using the functional richness)</p> <p>File: mcdim1_max_minTemp.rds (This file contains model results using the trait dimension 1)</p> <p>File: mcdim2_max_minTemp.rds (This file contains model results using the trait dimension 2)</p> <p>File: MFA_Results.rds (This file contains the multiple factor analysis "MFA" results)</p> <p>File: mfdiv_max_minTemp.rds (This file contains model results using the functional divergence)</p> <p>File: mfeve_max_minTemp.rds (This file contains model results using the functional evenness) </p> <p>File: mfori_max_minTemp.rds (This file contains model results using the functional originality)</p> <p>File: msric_max_minTemp.rds (This file contains model results using the species richness)</p> <p>File: nullFRic.rds (This file contains the null models)</p> <p>File: RegionalPool_coord.csv (This file contains the NEON domains and locations)</p> <p>File: Traits_Birds.csv (This file contains all the bird traits compiled)</p> <p>If you use any dataset please cite the article above and the original reference for the data set.</p>
Data from: Temperature has an overriding role compared to photoperiod in regulating the seasonal timing of winter moth egg hatching
<p>To accurately predict species' phenology under climate change, we need to gain a detailed mechanistic understanding of how different environmental cues interact to produce the seasonal timing response. In the winter moth (<em>Operophtera brumata</em>), seasonal timing of egg hatching is strongly affected by ambient temperature and has been under strong climate change-induced selection over the past 25 years. However, it is unclear whether photoperiod received at the egg stage also influences timing of egg hatching. Here, we investigated the relative contribution of photoperiod and temperature in regulating winter moth egg development using two split-brood experiments. We experimentally shifted the photoperiod eggs received by 2-4 weeks compared to the actual calendar date and measured the timing of egg hatching, both at a constant temperature and in combination with two naturally changing temperature treatments – mimicking a cold and a warm year. We found an eight-fold larger effect of temperature compared to photoperiod on egg development time. Moreover, the very small photoperiod effects we found were outweighed by both between- and within-clutch variation in egg development time. Thus, we conclude that photoperiod received at the egg stage does likely not play a substantial role in regulating the seasonal timing of egg hatching in the winter moth. These insights into the regulatory mechanism of seasonal timing could have important implications for predicting insect climate change adaptation, as we might expect different targets of selection depending on the relative contribution of different environmental cues.</p>
Boldness suppresses hoarding behavior in food hoarding season and reduces over-wintering survival in a social rodent
<p><span>The "pace-of-life" syndrome (POLS) framework can encompass multiple personality axes that drive important functional behaviours (e.g., foraging behaviour) and that co-vary with multiple life history traits. Food hoarding is an adaptive behaviour important for an animal's adaptation to seasonal fluctuations in food availability. However, the empirical evidence for the relationships between animal personality and hoarding behaviour remains unclear, including its fitness consequences in the POLS framework. In this study, the Mongolian gerbil (<em>Meriones</em> <em>unguiculatus</em>), a social rodent, was used as a model system to investigate how boldness or shyness is associated with food hoarding strategies in the food hoarding season and overwinter survival or reproduction at individual and group levels. The results of this study showed that compared to shy gerbils, bold gerbils had a lower effort foraging strategy during the food hoarding season and exhibited lower overwinter survival, but bold–shy personality differences had no effect on overwinter reproduction. These findings suggest that the personality of the animal is a key factor that affects the foraging strategy during the food hoarding season in Mongolian gerbils. Personality may be related to energy states or the reaction to environmental change (e.g., predation risk, food availability) in bold or shy social animals. These results reflect animal life history trade-offs between "current versus future reproduction" and "reproduction versus self-maintenance", thereby helping Mongolian gerbils adapt to seasonal fluctuations in their living environment.</span></p>
Winter feeding preferences and personality vary with territory characteristics in wild great tits
<p>Differences in habitat characteristics experienced during rearing associate with variation in a range of behavioral phenotypes such as exploratory behavior, foraging behavior and food preference. The habitat-dependent selection hypothesis predicts that animals develop behavioral characteristics fitted to their rearing environment. Yet, little is known about how habitat characteristics during rearing shape how animals face winter conditions and adjust their winter foraging behavior. The aim of this study was to explore how fine-scale rearing habitat characteristics associate with exploratory behavior, food selection and foraging performance during winter. For this, we measured habitat characteristics during the breeding season in territories of wild great tits (<em>Parus major</em>), and tested first-year juvenile birds that fledged from these territories for exploratory and foraging behavior at feeders during winter. We found evidence that faster explorers were raised in territories with lower quality-related habitat characteristics. In addition, fast exploring fledglings visited the feeders significantly more (total visits). Moreover, the rearing environment, via caterpillar availability and tree species composition, determined diet selection during winter in first year birds. These results show support for the habitat-dependent selection hypothesis, since exploratory behavior as well as food preferences during winter associate with habitat features of the rearing territories during development. This pattern can be caused either by the kinds of foods prevalent at these sites or because of intrinsic individual differences. Further experiments are needed to disentangle these two.</p>
Refactoring Dataset for SOEN 6491 Software Refactoring, Winter 2024 - Team Alpha
<p>The dataset collected by Team Alpha in SOEN 6491 Software Refactoring course, Winter 2024</p> <p><strong>Content Description</strong></p> <table> <tbody> <tr> <td><strong>File name</strong></td> <td><strong>File type</strong></td> <td><strong>Description</strong></td> </tr> <tr> <td>vertx.db, spring-boot.db, mina-sshd.db, guava.db</td> <td>SQLite Database</td> <td> <p>Fully collected refactoring dataset:</p> <ul> <li>Refactoring data (via RefactoringMiner)</li> <li>Code smells (via Organic)</li> <li>Code duplications (via PMD)</li> <li>Code churn (via Git)</li> <li>Timeline and statistics of releases in relation to refactoring commits. Releases are collected via GitHub API.</li> </ul> </td> </tr> <tr> <td>flink.db, rocketmq.db, ant.db, dubbo.db, elasticsearch.db, neo4j.db, rxjava.db, zookeeper.db</td> <td>SQLite Database</td> <td> <p>Partially collected refactoring dataset:</p> <ul> <li>Refactoring data (via RefactoringMiner)</li> </ul> </td> </tr> </tbody> </table>
Data from: Effects of resource availability and interspecific interactions on Arctic and red foxes' winter use of ungulate carrion in the Fennoscandian low-Arctic tundra
<p>In the Arctic tundra, predators face recurrent periods of food scarcity and often turn to ungulate carcasses as an alternative food source. As important and localized resource patches, carrion promotes co-occurrence of different individuals, and its use by predators is likely to be affected by interspecific competition. We studied how interspecific competition and resource availability impact winter use of carrion by Arctic and red foxes in low Arctic Fennoscandia. We predicted that presence of red foxes limits Arctic foxes' use of carrion, and that competition depends on the availability of other resources. We monitored Arctic and red fox presence at supplied carrion using camera traps. From 2006 to 2021, between 16 and 20 cameras were active for two months in late winter (288 camera-winters). Using a multi-species dynamic occupancy model at a week-to-week scale, we evaluated use of carrion by foxes while accounting for the presence of competitors, rodent availability and supplemental feeding provided to Arctic foxes. Competition affected carrion use by increasing both species' probability to leave occupied carcasses sites between consecutive weeks. This increase was similar for the two species, suggesting symmetrical avoidance. Increased rodent abundance was associated with a higher probability of colonizing carrion sites for both species. For Arctic foxes, however, this increase was only observed at carcasses unoccupied by red foxes, showing greater avoidance when alternative preys are available. Supplementary feeding increased Arctic foxes' carrion use, regardless of red fox presence. Contrary to expectations, we did not find strong signs of asymmetric competition for carrion in winter, which suggests that interactions for resources at a short time scale are not necessarily aligned with interactions at the scale of the population. In addition, we found that competition for carcasses depends on the availability of other resources, suggesting that interactions between predators depend on the ecological context.</p>
Liquidambar styraciflua (Hamamelidaceae) - whole tree (or vine) - winter
Image of Liquidambar styraciflua (Hamamelidaceae) - whole tree (or vine) - winter
Liquidambar styraciflua (Hamamelidaceae) - twig - close-up winter terminal bud
Image of Liquidambar styraciflua (Hamamelidaceae) - twig - close-up winter terminal bud
Acer saccharum (Aceraceae) - whole tree (or vine) - winter
Image of Acer saccharum (Aceraceae) - whole tree (or vine) - winter
Ulmus americana (Ulmaceae) - whole tree (or vine) - winter
Image of Ulmus americana (Ulmaceae) - whole tree (or vine) - winter
Ulmus serotina (Ulmaceae) - whole tree (or vine) - winter
Image of Ulmus serotina (Ulmaceae) - whole tree (or vine) - winter
Fraxinus americana (Oleaceae) - whole tree (or vine) - winter
Image of Fraxinus americana (Oleaceae) - whole tree (or vine) - winter
Carya ovata (Juglandaceae) - whole tree (or vine) - winter
Image of Carya ovata (Juglandaceae) - whole tree (or vine) - winter
Gymnocladus dioicus (Fabaceae) - whole tree (or vine) - winter
Image of Gymnocladus dioicus (Fabaceae) - whole tree (or vine) - winter
Amelanchier arborea (Rosaceae) - whole tree (or vine) - winter
Image of Amelanchier arborea (Rosaceae) - whole tree (or vine) - winter
Amelanchier arborea (Rosaceae) - whole tree (or vine) - winter
Image of Amelanchier arborea (Rosaceae) - whole tree (or vine) - winter
Juglans nigra (Juglandaceae) - whole tree (or vine) - winter
Image of Juglans nigra (Juglandaceae) - whole tree (or vine) - winter
Quercus alba (Fagaceae) - whole tree (or vine) - winter
Image of Quercus alba (Fagaceae) - whole tree (or vine) - winter
Prunus virginiana (Rosaceae) - whole tree (or vine) - winter
Image of Prunus virginiana (Rosaceae) - whole tree (or vine) - winter
Gleditsia triacanthos (Fabaceae) - whole tree (or vine) - winter
Image of Gleditsia triacanthos (Fabaceae) - whole tree (or vine) - winter
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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.