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4,243 results for “seasonality”
Data from: Origins of East Asian Summer Monsoon Seasonality
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Slab Ocean forcing file and model output for "Seasonal Transitions and the Westerly Jet in the Holocene East Asian Summer Monsoon"
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Seasonal pulse dynamics of CO2 and N2O, but not NOx, are modulated by exotic grass invasion in California coastal sage scrub
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Modeling phenological reaction norms over an elevational gradient reveals contrasting strategies of Dusky Flycatchers and Mountain Chickadees in response to early season temperatures
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Soil chemistry and dry season intensity, Panama Canal Area
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Seasonal seabird density and richness of seabirds off Southern California from sampling aboard California Cooperative Oceanic Fisheries Investigations (CalCOFI) cruises, 1987 - 2006.
The observational data have been collected as part of long-term fisheries oceanography and seabird monitoring programs designed to inform management of California Current Ecosystem living marine resources. Information collected on seabird distribution and abundance at sea off southern California has been obtained since May 1987 as part of the California Cooperative Oceanic Fisheries Investigation (CalCOFI; http://www.calcofi.net). This program, initiated by R.R. Veit and J.A. McGowan, with funding from the National Science Foundation, has resulted in density (no. birds/km2) estimates of ~60 species of seabirds over the period 1987-present (Veit et al. 1996, 1997, Hyrenbach and Veit 2003, Yen et al. 2006).
Seasonal seabird density by species and seasonal density anomaly for four seabird species off Southern California from from sampling aboard California Cooperative Oceanic Fisheries Investigations (CalCOFI) cruises, 1987 - 2006.
The observational data have been collected as part of long-term fisheries oceanography and seabird monitoring programs designed to inform management of California Current Ecosystem living marine resources. Information collected on seabird distribution and abundance at sea off southern California has been obtained since May 1987 as part of the California Cooperative Oceanic Fisheries Investigation (CalCOFI; http://www.calcofi.net). This program, initiated by R.R. Veit and J.A. McGowan, with funding from the National Science Foundation, has resulted in density (no. birds/km2) estimates of ~60 species of seabirds over the period 1987-present (Veit et al. 1996, 1997, Hyrenbach and Veit 2003, Yen et al. 2006).
2012 growing season water table depth in common gardens:Specialization, maintenance of diversity and ecosystem consequences of growth defense trade-offs in a model system, the hyper-diverse willow communities of Cedar Creek
Cedar Creek includes a diversity of habitats, which support an astonishing number of species (15) from a single evolutionary lineage: the willow family (Salicaceae). The physiological tolerances and abiotic mechanisms that maintain natural diversity in this hyper-diverse system are beginning to be understood; the role of biotic interactions, however, remains a major gap in understanding. We hypothesize that insect herbivory plays a critical role in niche partitioning, providing an important explanation for high willow diversity. Using a replicated series of common gardens and insect herbivore manipulations in resource rich and resource poor habitats, we are testing for evolved trade-offs between defense investment and growth rate. We expect specialized plant syndromes to emerge along the continuum from ???herbivore escape??? via fast growth in high resource environments to ???anti-herbivore protection??? via heavy investment in defense in low resource environments. Evolved growth/defense strategies that promote diversity are also likely to have ecosystem consequences due to foliar chemical influences on decomposition and the composition and diversity of the insect communities they support. The proposed research takes advantage of natural diversity, providing an important model system at Cedar Creek.
Particulate organic carbon and nitrogen measurements from Go-Flo bottles sampling the water column from a zodiac during Palmer LTER station seasons at Palmer Station Antarctica, 1991 - 2012.
All organisms are composed of organic matter. Organic matter is synthesized from dissolved inorganic carbon (dissolved CO2) and inorganic nutrients by phytoplankton photosynthesis, and consumed (oxidized) by respiration by heterotrophs (zooplankton and bacteria). The organic matter in seawater is a variable mixture of dissolved and particulate organic matter (DOM and POM). Typically DOM predominates over POM by an order of magnitude, but the relative amount of POM can be highly enhanced during large phytoplankton blooms. The principal elemental components of POM include organic carbon (POC), organic nitrogen (PN), there is no particulate inorganic N) and phosphorus (POP). These elements exist in a relatively stable, characteristic ratio of 106:6:1 (C:N:P) in seawater, known as the Redfield Ratio. Marine particulate matter is a complex mixture of live and dead plankton and detritus, and of carbohydrates, proteins, lipids and nucleic acids. POC and PN are enhanced in the euphoric zone, reflecting their origin by photosynthesis. The particulate pool is also a complex assemblage of particles of different sizes, shapes and densities. A simplified scheme divides the particles into large, rapidly sinking particles (10s - 100s of meters per day) and smaller, suspended particles. The transition between small particles and dissolved organic matter is typically specified by filtration through GF/F filters. POC and PN are analyzed for all samples in the upper 50 meters at Palmer Station B (75 m depth) and the upper 65 m at Station E (200 m depth). There is a gradient of POM from higher values inshore to much lower values in deep ocean water beyond the continental shelf break (sampled on the annual cruise).
Bacterial properties in discrete water column samples collected during Palmer LTER station seasons at Palmer Station Antarctica, 2002 - 2019.
The microbial biogeochemistry component of PAL focuses on marine bacterioplankton, and is thus a counterpart to the phytoplankton and zooplankton components, which together provide a detailed and comprehensive description of plankton ecology in PAL-LTER. Bacteria and Archaea (hereafter called "bacteria") are taxonomically and metabolically diverse. In coastal and offshore surface waters Bacteria generally predominate over Archaea, but Archaea are equal or greater in abundance in the mesopelagic layer below the euphoric zone. We focus on aerobic, heterotrophic bacteria in the upper 65 m at Palmer Station which oxidize recently-produced low molecular weight dissolved organic compounds released by phytoplankton and zooplankton, decomposing them back into CO2 and inorganic nutrients. Globally, marine bacteria respire an amount of carbon roughly equal to about half the daily photosynthetic production. In cold polar waters, relative bacterial activity is lower, with bacterial biomass production being equal to <5% of the daily photosynthesis. The ratio at lower latitudes is 10-20%. The factors responsible for this contrast are not entirely clear. Resolving this pattern is a key aim of the PAL microbial component. At Palmer Station, bacterial production is low (< 10 mgC/m2/d) in the winter (polar night) when there is little if any photosynthesis. There is a climatological (2003-14 average) summer peak of 50-60 mgC/m2/d in January-February but with considerable seasonal and annual variability. The 2016/2017 season data contains bacteria abundances for preserved samples for comparison to abundances from live samples. See the documentation for this in the accompanying file, 2016_live_vs_preserved.pdf.
Competition Between Strains of Borrelia afzelii in Immature Ixodes ricinus Ticks Is Not Affected by Season
<p>The Excel file titled, "Raw data.xlsx" contains the raw data that was used in the statistical analyses of the article titled, "Competition Between Strains of Borrelia afzelii in Immature Ixodes ricinus Ticks Is Not Affected by Season" that was published in Frontiers in Cellular and Infection Microbiology.</p>
Figure 7 from: Meléndez-Jaramillo E, Cantú-Ayala C, Sánchez-Reyes UJ, Sandoval-Becerra FM, Herrera-Fernández B (2019) Altitudinal and seasonal distribution of butterflies (Lepidoptera, Papilionoidea) in Cerro Bufa El Diente, Tamaulipas, Mexico. ZooKeys 900: 31-68. https://doi.org/10.3897/zookeys900.36978
Figure 7 Monthly variation of abundance and richness of butterfly species in Cerro Bufa El Diente, Tamaulipas, Mexico.
Figure 6 from: Meléndez-Jaramillo E, Cantú-Ayala C, Sánchez-Reyes UJ, Sandoval-Becerra FM, Herrera-Fernández B (2019) Altitudinal and seasonal distribution of butterflies (Lepidoptera, Papilionoidea) in Cerro Bufa El Diente, Tamaulipas, Mexico. ZooKeys 900: 31-68. https://doi.org/10.3897/zookeys900.36978
Figure 6 Monthly climate variation in Cerro Bufa El Diente, Tamaulipas, Mexico. Upper graphic: Variation of temperature and precipitation. Lower graphic: Variation of solar radiation and relative humidity.
Figure 5 from: Meléndez-Jaramillo E, Cantú-Ayala C, Sánchez-Reyes UJ, Sandoval-Becerra FM, Herrera-Fernández B (2019) Altitudinal and seasonal distribution of butterflies (Lepidoptera, Papilionoidea) in Cerro Bufa El Diente, Tamaulipas, Mexico. ZooKeys 900: 31-68. https://doi.org/10.3897/zookeys900.36978
Figure 5 Species accumulation and estimator curves by season in the Cerro Bufa El Diente, Tamaulipas, Mexico. Upper graphic: Early dry season (black color) and late dry season (dark red color). Lower graphic: Early rainy season (black color) and late rainy season (dark blue color).
Figure 3 from: Meléndez-Jaramillo E, Cantú-Ayala C, Sánchez-Reyes UJ, Sandoval-Becerra FM, Herrera-Fernández B (2019) Altitudinal and seasonal distribution of butterflies (Lepidoptera, Papilionoidea) in Cerro Bufa El Diente, Tamaulipas, Mexico. ZooKeys 900: 31-68. https://doi.org/10.3897/zookeys900.36978
Figure 3 SHE analysis of diversity for the Cerro Bufa El Diente and for each one of altitudinal sites. H diversity (Shannon index); ln E natural logarithm of evenness; ln E/ ln S quotient of two previous.
Figure 2 from: Meléndez-Jaramillo E, Cantú-Ayala C, Sánchez-Reyes UJ, Sandoval-Becerra FM, Herrera-Fernández B (2019) Altitudinal and seasonal distribution of butterflies (Lepidoptera, Papilionoidea) in Cerro Bufa El Diente, Tamaulipas, Mexico. ZooKeys 900: 31-68. https://doi.org/10.3897/zookeys900.36978
Figure 2 Species accumulation and estimator curves in the Cerro Bufa El Diente, Tamaulipas, Mexico. Upper graphic: accumulation curves for all study area. Lower graphic: Site 1 (red color), Site 2 (blue color) and Site 3 (green color).
Figure 1 from: Meléndez-Jaramillo E, Cantú-Ayala C, Sánchez-Reyes UJ, Sandoval-Becerra FM, Herrera-Fernández B (2019) Altitudinal and seasonal distribution of butterflies (Lepidoptera, Papilionoidea) in Cerro Bufa El Diente, Tamaulipas, Mexico. ZooKeys 900: 31-68. https://doi.org/10.3897/zookeys900.36978
Figure 1 Study area and location of sampling sites A location of Tamaulipas in Mexico B location of Sierra de San Carlos within Tamaulipas C study area (red square) within Sierra de San Carlos D elevation sites in Cerro Bufa El Diente.
Data for paper "Axial wind effects on stratification and longitudinal sediment transport in a convergent estuary during wet season"
<p>This is the COAWST model data used in the paper. </p>
Fig. 4 in Seasonal and longitudinal variation in fish assemblage structure along an unregulated stretch of the Middle Uruguay River
Fig. 4. Relative abundance (% biomass, CPUEb) of migratory fishes at each site (A), and spatial distribution of biomass considering each migratory species (B). The number of individuals captured is indicated above each bar. Characiformes: Megaleporinus obtusidens, Prochilodus lineatus, Salminus brasiliensis and Rhaphiodon vulpinus. Siluriformes: Pimelodus maculatus, Sorubim lima, Pseudopimelodus mangurus, Pseudopplatystoma corruscans and Luciopimelodus pati.
Fig. 1 in Seasonal and longitudinal variation in fish assemblage structure along an unregulated stretch of the Middle Uruguay River
Fig. 1. Location of sampling sites along the Middle Uruguay River, RS, Brazil. Derrubadas (S1), Esperança do Sul (S2), Alecrim (S3), Porto Vera Cruz (S4), São Nicolau (S5) and São Borja (S6).
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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.