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4,243 results for “seasonality”
Figure 9a–c in Abundance and Seasonal Occurrence of Pest Fruit Flies (Diptera: Tephritidae) in Residential and Rural Areas of Oahu (Hawaiian Islands)
Figure 9a–c. Correlation between mean monthly captures of female flies in protein traps and males in male lure traps for B. cucurbitae (a), B. dorsalis (b), and C. capitata (c).
Figure 6a–b in Abundance and Seasonal Occurrence of Pest Fruit Flies (Diptera: Tephritidae) in Residential and Rural Areas of Oahu (Hawaiian Islands)
Figure 6a–b. Mean captures of female B. dorsalis per trap per week in torula yeast traps at different sites (a), in different habitats (a, insert graph), and as monthly means throughout the trapping periods in different habitats (b). Values with the same letter in insert graph are not significantly different at the 0.05 level (Tukey's test, post ANOVA). F = 447.43; df = 5,27536; P <0.001; r2 = 7.51%; n = 2514 (gardens), 1807 (NW Oahu), 13230 (residential), 1886 (rural), 5630 (urban), 2475 (Waialua).
Figure 5a–b in Abundance and Seasonal Occurrence of Pest Fruit Flies (Diptera: Tephritidae) in Residential and Rural Areas of Oahu (Hawaiian Islands)
Figure 5a–b. Mean captures of male B. dorsalis per trap per week in methyl eugenol traps at different sites (a), in different habitats (a, insert graph), and as monthly means throughout the trapping periods in different habitats (b). Values with the same letter in insert graph are not significantly different at the 0.05 level (Tukey's test, post ANOVA). F = 1459.54; df = 5,18128; P <0.001; r2 = 28.70%; n = 2514 (gardens), 1807 (NW Oahu), 8879 (residential), 1720 (rural), 739 (urban), 2475 (Waialua).
Data for: The role of temperature in the start of seasonal infectious disease epidemics
<p><span>Many infectious diseases display strong seasonal dynamics. </span><span>When both hosts and parasites are influenced by seasonal variables, it is unclear if the start of an epidemic is limited by host or parasite factors or both. The <em>Daphnia-Pasteuria</em> host-parasite system exhibits seasonal epidemics. </span>We aimed to ascertain how temperature contributes to the timing of <em>P</em>. <em>ramosa</em> epidemics in early spring. To this aim, we experimentally disentangled this effect from the effects of temperature on host development and phenology and from that of host traits on parasite time to visible infection. We hypothesized that the parasite is additionally directly limited by low temperatures beyond its need for available hosts. <span>We found that parasite time to visible infection decreased with increasing temperature at a faster rate than host time to hatching and maturity did, consistent with this hypothesis. We also found that hosts hatched from sexual resting stages are less likely to become infected than those produced clonally and that hosts resistant to many known parasite strains are slower to show signs of visible infection compared to those susceptible to many. Together, these results imply that climate change could lead to earlier seasonal epidemics for this host-parasite system, which may also impact longer-term population dynamics.</span></p>
Data for: Differences in mucilage properties and stomatal sensitivity of locally adapted Zea mays in relation with precipitation seasonality and vapour pressure deficit regime of their native environment
<p>Dataset PlantDirect published manuscript:</p> <p>Berauer <em>et al.</em> (2023) - Differences in mucilage properties and stomatal sensitivity of locally adapted Zea mays in relation with precipitation seasonality and vapour pressure deficit regime of their native environment</p> <p>Article DOI: <em><strong>10.1002/pld3.519</strong></em></p> <p> </p> <p>All data is provided within one excel file. Please, pay attention to the provided ReadMe sheet for information on the dataset.</p>
Figure 2 in Seasonal altitudinal movements of birds in Brazil: a review
Figure 2. Map showing where studies found in the literature search were carried out, including all references to seasonal altitudinal movement of birds in Brazil. On the right, topography, and on the left plant formations or biomes. Blue circles are studies carried out where altitudinal movements could possibly be studied, while red circles are those studies that were unable to test, but nonetheless claim, altitudinal movements.
Figure 1 in Seasonal altitudinal movements of birds in Brazil: a review
Figure 1. Cumulative curve of number of publications citing some form of altitudinal movement in Brazilian birds since 1854.
Data from: Seasonal restructuring facilitates compositional convergence of gut microbiota in free-ranging rodents
<p>Gut microbes provide essential services to their host and shifts in their composition can impact host fitness. However, despite advances in our understanding of how microbes are assembled in the gut, we understand little about the stability of these communities within individuals, nor what factors influence its composition over the life of an animal. For this reason, we conducted a longitudinal survey of the gut microbial communities of individual free-ranging woodrats (<em>Neotoma</em> spp.) across a hybrid zone in the Mojave Desert, USA, using amplicon sequencing approaches to characterize gut microbial profiles and diet. We found that gut microbial communities were individualized and experienced compositional restructuring as a result of seasonal transitions and changes in diet. Turnover of gut microbiota was highest amongst bacterial subspecies and was much lower at the rank of Family, suggesting there may be selection for conservation of core microbial functions in the woodrat gut. Lastly, we identified an abundant core gut bacterial community that may aid woodrats in metabolizing a diet of plants and their specialized metabolites. These results demonstrate that the gut microbial communities of woodrats are highly dynamic and experience seasonal restructuring which may facilitate adaptive plasticity in response to changes in diet. </p>
Data from: Novel approaches for assessing acclimatization in birds reveal seasonal changes in peripheral heat exchange and thermoregulatory behaviors
<p>Using thermography and behavioral analyses, we found that heat exchange and thermoregulatory behaviors changed seasonally in chipping sparrows (<em>Spizella passerina</em>). Studies on seasonal acclimatization in birds have primarily involved metabolic measurements, few of which have investigated behaviors, and none have investigated changes in peripheral heat exchange. We captured chipping sparrows in the winter and summer of 2022 in Wilmington, North Carolina, and we collected thermal images of these birds at 15.0°, 27.5°, and 40.0°C. We found that heat dissipation through the bill and legs changed seasonally, but surprisingly both were higher in winter than in summer. We found that heat dissipating behaviors were more common in winter, whereas heat conserving behaviors were more common in summer, and that behaviors associated with resource costs (e.g., panting) or predation risk (e.g., bill tucking) showed the most distinct differences between seasons. Meanwhile, low-cost and low-risk postural adjustments (e.g., feather adjustments and tarsus exposure) did not vary as strongly between seasons but followed similar trends. The seasonal adjustments to behaviors suggest that non-acclimatized birds must use costly thermoregulatory behaviors more frequently than acclimatized birds. The use of thermography catalyzed the discovery of one completely novel behavior, and the first detection of a known behavior in a new species. Both novel behaviors aided in evaporative heat loss and occurred more commonly in winter, supporting the presence of seasonal acclimatization as evidenced by behavioral adjustments. These results provide novel insights to the process of acclimatization and suggest a role of behavioral adjustments in seasonal acclimatization.</p>
Northern bobwhite adult breeding season and nest survival Missouri 2014-2018
<p>These data and code are associated with the publication in The Journal of Wildlife Management entitled "Northern Bobwhite breeding season and nest survival are greater on native grasslands." We evaluated the influence of vegetation cover type, woody vegetation structure and composition, and habitat management on nest survival and adult survival from May through September in southwest Missouri 2014-2018.</p>
Supplementary Data to: "Quantifying sub-seasonal growth rate changes in fossil giant clams using wavelet transformation of daily Mg/Ca cycles" in Geochemistry, Geophysics, Geosystems
<p>El/Ca data and high resolution images of 3 laser-ablation tracks on a fossil giant calm. The following Isotopes were monitored <sup>11</sup>B, <sup>23</sup>Na, <sup>24</sup>Mg, <sup>27</sup>Al, <sup>43</sup>Ca, <sup>88</sup>Sr, <sup>89</sup>Y and <sup>138</sup>Ba. The data was measured with laser-ablation inductively coupled plasma mass spectrometry (LA-ICPMS) using a 3 x 33 µm laser slit. El/Ca ratios were calibrated using NIST SRM 612 as bracketing external standard (Jochum et al., 2011) with updated Mg values from Evans & Müller (2018) and <sup>43</sup>Ca as the internal standard; data quantification follows Longerich et al. (1996) and was performed using the software iolite 4 (Paton et al., 2011). For details see main text.</p> <p>References:</p> <p>Evans, D., & Müller, W. (2018). Automated Extraction of a Five-Year LA-ICP-MS Trace Element Data Set of Ten Common Glass and Carbonate Reference Materials: Long-Term Data Quality, Optimisation and Laser Cell Homogeneity. <em>Geostandards and Geoanalytical Research</em>, <em>42</em>(2), 159–188. https://doi.org/10.1111/ggr.12204</p> <p>Jochum, K. P., Weis, U., Stoll, B., Kuzmin, D., Yang, Q., Raczek, I., Jacob, D. E., Stracke, A., Birbaum, K., Frick, D. A., Günther, D., & Enzweiler, J. (2011). Determination of Reference Values for NIST SRM 610–617 Glasses Following ISO Guidelines. <em>Geostandards and Geoanalytical Research</em>, <em>35</em>(4), 397–429. https://doi.org/10.1111/j.1751-908X.2011.00120.x</p> <p>Longerich, H. P., Jackson, S. E., & Günther, D. (1996). Inter-laboratory note. Laser ablation inductively coupled plasma mass spectrometric transient signal data acquisition and analyte concentration calculation. <em>Journal of Analytical Atomic Spectrometry</em>, <em>11</em>(9), 899–904. https://doi.org/10.1039/JA9961100899</p> <p>Paton, C., Hellstrom, J., Paul, B., Woodhead, J., & Hergt, J. (2011). Iolite: Freeware for the visualisation and processing of mass spectrometric data. <em>Journal of Analytical Atomic Spectrometry</em>, <em>26</em>(12), 2508–2518. https://doi.org/10.1039/C1JA10172B</p>
Stage-mediated priority effects and season lengths shape long-term competition dynamics
<p>The relative arrival time of species can affect their interactions and thus determine which species persist in a community. Although this phenomenon, called priority effect, is widespread in natural communities, it is unclear how it depends on the length of growing season. Using a seasonal stage-structured model, we show that differences in stages of interacting species could generate priority effects by altering the strength of stabilizing and equalizing coexistence mechanisms, changing outcomes between exclusion, coexistence, and positive frequency dependence. However, these priority effects are strongest in systems with just one or a few generations per season and diminish in systems where many overlapping generations per season dilute the importance of stage-specific interactions. Our model reveals a novel link between the number of generations in a season and the consequences of priority effects, suggesting that consequences of phenological shifts driven by climate change should depend on specific life histories of organisms.</p>
Data and code from: Breakdown in seasonal dynamics of subtropical ant communities with land-cover change
<p><span>Concerns about widespread human-induced declines in insect populations are mounting, yet little is known about how land-use change modifies the dynamics of insect communities, particularly in understudied regions. Here, we examine how the seasonal activity patterns of ants—key drivers of terrestrial ecosystem functioning—vary with anthropogenic land-cover change on a subtropical island landscape, and whether differences in temperature or species composition can explain observed patterns. Using trap captures sampled biweekly over two years from a biodiversity monitoring network covering Okinawa Island, Japan, we processed 1.2 million individuals and reconstructed activity patterns within and across habitat types. Forest communities exhibited greater temporal variability of activity than those in more developed areas. Using time-series decomposition to deconstruct this pattern, we found that sites with greater human development exhibited ant communities with diminished seasonality, reduced synchrony, and higher stochasticity compared to sites with greater forest cover. Our results cannot be explained by variation in regional or site temperature patterns, or by differences in species richness or composition among sites. Our study raises the possibility that disruptions to natural seasonal patterns of functionally key insect communities may comprise an important and underappreciated consequence of global environmental change that must be better understood across Earth's biomes.</span></p>
ToDY: Time of Day/Year: Dataset for visual time of day and season classification
<p>Dataset for training classification of images per time of day and season, and related tools.</p> <p>This is a snapshot of the dataset's repository at https://github.com/wbailer/ToDY</p>
NNLM Discovery Podcast Season 1 in Numbers
<p>Infographic summarizing descriptive statistics of the first season of the NNLM Discovery Podcast</p> <p>This resource is supported by the National Library of Medicine of the National Institutes of Health under Award Number U24LM013751<strong><span>.</span></strong> The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.</p>
Figura 1 in IDENTIFICATION OF PRIORITY SEASONS AND PESTICIDES FOR WATER MONITORING: A CASE STUDY IN ESPÍRITO SANTO
Figura 1: Distribuição espacial da produção cafeeira no estado do Espírito Santo. Destaque para as bacias dos rios Barra Seca/Mucuri e Foz do Rio Doce, onde estão inseridos os cinco maiores municípios produtores.
Figura 2 in IDENTIFICATION OF PRIORITY SEASONS AND PESTICIDES FOR WATER MONITORING: A CASE STUDY IN ESPÍRITO SANTO
Figura 2: Distribuição temporal dos estágios fenológicos do café, das condições climáticas, épocas de maior incidência das pragas e doenças, durante os 12 meses do ano no estado do Espírito Santo. No degradê de cores, as mais escuras representam períodos de maior ocorrência das pragas e doenças, assim como maiores pluviosidades e temperaturas, torando-se mais claras conforme se reduz a incidência e intensidade dos eventos.
Figura 3 in IDENTIFICATION OF PRIORITY SEASONS AND PESTICIDES FOR WATER MONITORING: A CASE STUDY IN ESPÍRITO SANTO
Figura 3: Distribuição temporal das condições climáticas e épocas de aplicação dos ingredientes ativos autorizados classificados entre prioritários e não prioritários no Estado do Espírito Santo. No degradê de cores para as condições climáticas, a cor mais escura representa o período de altas temperaturas e pluviosidades, se tornando mais clara conforme estas condições se tornam menos intensas.
Pattern of seasonal variation in rates of predation between spider families is temporally stable in a food web with widespread intraguild predation
<p>Intraguild predation (IGP) – predation between generalist predators (IGPredator and IGPrey) that potentially compete for a shared prey resource – is a common interaction module in terrestrial food webs. Understanding temporal variation in webs with widespread IGP is relevant to testing food web theory. We investigated temporal constancy in the structure of such a system: the spider-focused food web of the forest floor. Multiplex PCR was used to detect prey DNA in 3,300 adult spiders collected from the floor of a deciduous forest during spring, summer, and fall over four years. Because only spiders were defined as consumers, the web was tripartite, with 11 consumer nodes (spider families) and 22 resource nodes: 11 non-spider arthropod taxa (order- or family-level) and the 11 spider families. Most (99%) spider-spider predation was on spider IGPrey, and ~90% of these interactions were restricted to spider families within the same broadly defined foraging mode (cursorial or web-spinning spiders). Bootstrapped-derived confidence intervals (BCI's) for two indices of web structure, restricted connectance and interaction evenness, overlapped broadly across years and seasons. A third index, % IGPrey (% IGPrey among all prey of spiders), was similar across years (~50%) but varied seasonally, with a summer rate (65%) ~1.8x higher than spring and fall. This seasonal pattern was consistent across years. Our results suggest that extensive spider predation on spider IGPrey that exhibits consistent seasonal variation in frequency, and that occurs primarily within two broadly defined spider-spider interaction pathways, must be incorporated into models of the dynamics of forest-floor food webs. </p>
Figure 4 in Comparison of feeding apparatus and feeding intensity of the European sardine (Sardina pilchardus) off Morocco in two Atlantic upwelling areas with different seasonal activity
Figure 4. – Box plots of mean gill raker number of young and adult of Sardina pilchardus in the Atlantic area B off Morocco.
ScienceDex guides
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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.