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24 results for “2009-2010”
Water Chemistry and Well Levels at Upper Bigelow Brook, Harvard Forest 2009-2010
This dataset is the result of a full year of high-resolution monitoring of hydrologic event-driven export of stream dissolved organic matter from the Upper Pipe site on Bigelow Brook at Harvard Forest. In situ measurements of fluorescent dissolved organic matter (FDOM) and conductivity were collected from October of 2009 to December of 2010. Grab samples of water were collected during hydrological events and analyzed using standard methods for dissolved organic matter, nitrate, ammonium, and dissolved organic nitrogen. Water level measurements in wells at this study site were initiated in May of 2010.
Fungal Diversity in Sarracenia Purpurea Pitchers at Harvard Forest 2009-2010
The carnivorous pitcher plant Sarracenia purpurea is widely distributed in the United States and Canada, and is host to a variety of symbiotic organisms, including symbiotic fungi. Culturing of S. purpurea pitcher contents in its native range uncovers diverse single-celled (yeast) communities; these yeast communities are dominated by the ascomycete yeast Candida pseudoglaebosa. We set out to understand how fungal diversity in S. purpurea pitchers changes over space and time, and how C. pseudoglaebosa might influence this diversity. In the summer of 2009, we assayed S. purpurea pitcher water fungal succession in Tom Swamp in Harvard Forest. We sequenced fungal DNA barcodes from 43 pitchers at different times throughout the growing season, and found that C. pseudoglaebosa has a strong impact on fungal diversity. It generally appears in pitchers early in succession, and once it arrives, it often becomes dominant quickly and decreases community evenness. We also identified two other culturable yeasts, Rhodotorula babjevae and Moesziomyces aphidis, which are common but not dominant in pitchers. In laboratory experiments, C. pseudoglaebosa outcompetes these two yeasts, but only if it is inoculated in large numbers, suggesting that C. pseudoglaebosa’s dominance is a consequence of early arrival during pitcher succession. The following summer (2010), we collected water from pitchers at five distant sites in the United States and Canada, and assayed fungal community diversity and C. pseudoglaebosa genetic diversity. We sampled pitcher plants from Tom Swamp in Harvard Forest, plus four other sites in British Columbia, Newfoundland, Georgia, and Florida (Floridian plants were Sarracenia rosea, a close relative of S. purpurea). Fungal communities tended to be structured geographically, with close communities resembling each other more than distant communities. In contrast, C. pseudoglaebosa exhibited three populations: one well-mixed population including isolates from Harvard F
Stream Suspended Sediment and Particulate Organic Matter at Harvard Forest 2009-2010
In addition to conveying water and nutrients and providing habitat to a variety of ecosystems, streams transport downstream mineral sediment and other particulate matter washed in from hillslopes and eroded from its channel and banks. At high levels, suspended sediment can be a devastating pollutant for aquatic organisms. The amount of suspended material in a stream varies tremendously with discharge; typically, suspended sediment increases with discharge, as stormwater runoff and overland flow carry particles from the hillslopes into the channel. Suspended sediment can also be a function of land use and vegetation, both of which affect the infiltration capacity of the landscape; more infiltration generally means less surface runoff and thus less sediment. Forested watersheds such as the Bigelow Brook watershed will typically have less suspended sediment than similar watersheds in urban environments. By analyzing how suspended sediment varies with discharge, I will be able to compare the relative effectiveness of overland flow of stormwater in washing materials into the streams. It is also possible that tree loss due to the wooly adelgid, ice storms, or fire in the watershed may increase the amount of sediment to Bigelow Brook, as a loss in tree canopy may result in more soil erosion due to rain splash and more water overall reaching the stream. For this reason, I hope to continue monitoring sediment in Bigelow Brook for an extended period of time to record any significant changes due to changing vegetation. Furthermore, by determining how much of the suspended sediment consists of particulate organic matter (using standard LOI techniques), I will be able to estimate the net carbon export from the two watersheds via that pathway. Preliminary, back-of-the-envelope calculations suggest that as much as 3-5% of the total annual carbon export leaves the Harvard Forest watershed via stream-transported particulate organic matter. To this end, I propose to measure suspended
Partitioning the Components of Soil Respiration in a Trenching Experiment at Harvard Forest 2009-2010
Total soil respiration (Rt) is a combination of autotrophic (Ra) and heterotrophic respiration (Rh). Several methods have been developed to tease out the components of Rt, such as isotopic analyses, and removing Ra input through tree girdling and root exclusion experiments. Trenching involves severing the rooting system surrounding a plot to remove the Ra component within the plot. This method has some potential limitations. Reduced water uptake in trenched plots could change soil water content, which is one of the environmental controllers of Rt in many ecosystems. Eliminating root inputs could reduce heterotrophic decomposition of SOM via lack of priming. On the other hand, the severed dead roots may temporarily increase available carbon substrate for Rh. We utilized the trenching method to partition the autotrophic and heterotrophic components of soil respiration in an oak dominated forest with the footprint of the LPH tower.
Lake Mendota at North Temperate Lakes LTER: Snow and Ice Depth 2009-2010
Ice core data collected by Yi-Fang (Yvonne) Hsieh and collaborators for her PhD project, “Modeling Ice Cover and Water Temperature of Lake Mendota.” Part of the project was the development of a 3D hydrodynamic-ice model that simulated both temporal and spatial distributions of ice cover on Lake Mendota for the winter 2009-2010. The parameters from these ice core data were used as model inputs to run model simulations. Parameters measured include: blue ice, white ice, snow depth, and total ice. On February 13, 2009, ice cores were taken on Lake Mendota at four different stations. From January 14, 2010 through March 3, 2010 ice cores were taken on Lake Mendota at 31 different stations. In addition, ice cores were taken on other Yahara Lakes during February of 2009: Lake Kegonsa (4 stations_February 6), Lake Waubesa (4 stations_February 7), Lake Wingra (2 stations_February 8), and Lake Monona (4 stations_February 8). Only total ice measurements are reported for 2009. Included in this data set are the ice core data, and geospatial information for ice coring stations. Documentation: Hsieh, Y.-F., 2012a. Modeling ice cover and water temperature of Lake Mendota. ProQuest Dissertations and Theses. The University of Wisconsin - Madison, United States -- Wisconsin, p. 157.
Overwintering Fires from 2009-2010 Burns near Fairbanks, Alaska: Post-fire Seedling Recruitment Collected 2023
This dataset contains data from adjacent overwintering and single-season burn sites. For the overwintering fires, we targeted locations that had burned in the summers of 2009, smouldered through the winter months, and reignited in 2010. Adjacent to these overwintering sites, we identified single-season burn sites from within portions of the 2009 fires that were unaffected by overwintering. A total of seven overwintering fire sites and four single-season fire sites were sampled. Within each site, three plots were established. Data inlcudes within plot measurments of post-fire seedling composition and density, residual SOL, burn depth estimated by black spruce adventitious roots, thaw depth, and pre-fire tree species composition and estimates of combustion. This is one of three packages from this project; this one contains the seedling recruitment data.
Overwintering Fires from 2009-2010 Burns near Fairbanks, Alaska: Residual Soil Organic Layer Depth, Burn Depth and Thaw Depth Collected 2023
This dataset contains data from adjacent overwintering and single-season burn sites. For the overwintering fires, we targeted locations that had burned in the summers of 2009, smouldered through the winter months, and reignited in 2010. Adjacent to these overwintering sites, we identified single-season burn sites from within portions of the 2009 fires that were unaffected by overwintering. A total of seven overwintering fire sites and four single-season fire sites were sampled. Within each site, three plots were established. Data inlcudes within plot measurments of post-fire seedling composition and density, residual SOL, burn depth estimated by black spruce adventitious roots, thaw depth, and pre-fire tree species composition and estimates of combustion. This is one of three packages from this project; this one contains the soils data.
Overwintering Fires from 2009-2010 Burns near Fairbanks, Alaska: Pre-fire Tree Species Density and Combustion Collected 2023
This dataset contains data from adjacent overwintering and single-season burn sites. For the overwintering fires, we targeted locations that had burned in the summers of 2009, smouldered through the winter months, and reignited in 2010. Adjacent to these overwintering sites, we identified single-season burn sites from within portions of the 2009 fires that were unaffected by overwintering. A total of seven overwintering fire sites and four single-season fire sites were sampled. Data inlcudes within plot measurments of post-fire seedling composition and density, residual SOL, burn depth estimated by black spruce adventitious roots, thaw depth, and pre-fire tree species composition and estimates of combustion. This is one of three packages from this project; this one contains the pre-fire tree species density and combustion data.
Inter-Chemical Correlation results for the study: NHANES20092010 (NHANES Survey 2009-2010)
Title: NHANES Survey 2009-2010 <br>Species: Homo sapiens <br>Number of samples: 9717 <br>Number of named analytes: 186 <br>Datasource url: https://wwwn.cdc.gov/nchs/nhanes/search/datapage.aspx?Component=Laboratory <br>
Common Raven (Corvus corax) Occupancy Survey and Habitat Selection Data in Cliff Habitat of the Central Appalachian Region, USA, 2009-2010
We identified 24 cliff sites across four states of the Central Appalachian Region of the eastern USA (Kentucky, North Carolina, Virginia, and West Virginia) with known raven occupancy at which to perform occupancy surveys for estimating detection probability and the effects of covariates. We surveyed each cliff site 2-4 times in either 2009 or 2010 and recorded time-to-first detection and time to confirmed cliff occupancy during a two-hour survey. Daily surveys were completed between 06:00 and local solar noon. During each survey, we recorded covariates, including air temperature at survey start time, cloud cover, wind speed, and day of year. We also calculated the distance of the observation point from the cliff being surveyed and the forest cover around the cliff. We also collected data thought to be pertinent for habitat selection by ravens on 26 cliffs occupied by ravens and 26 cliffs deemed unoccupied by ravens in 2010. For each cliff, we measured cliff physiographic characteristics, such as cliff length, cliff height, and occlusion by vegetation, and landscape characteristics, including percent forest and urban cover around the cliff and distances from the cliff to the nearest road and human habitation.
SBC LTER: Land Ocean Reef: Carbon, Nitogen and Hydrogen isotopes for evaluating food sources for subtidal consumers, 2009-2010
Potentially important food sources to consumers on shallow subtidal reefs include phytoplankton-dominated seston, kelp-derived detritus, and for locations adjacent to sources of freshwater runoff, terrestrially-derived material. The SBC LTER is using stable carbon, nitrogen and deuterium isotope ratio analysis to evaulate the relative contribution of these sources to reef food webs. We collect seasonal samples from five core SBCLTER research reefs (Arroyo Hondo, Naples, Arroyo Burro, Goleta bay and Carpinteria), and areas adjacent. We routinely collect several types of samples: from giant kelp (Macrocystis pyrifera), red, brown and green algae, terrestrial material (Oak leaves), stream, sediment and ocean water particulate organic material, and a benthic polychaete worm (Diopatra). This information will be used to evaluate whether these isotopic values differ enough from one another to permit the use of mixing models to estimate the contribution of each source to the reef food web.
VORTEX-2 2009-2010 radar data from NOAA X-band dual Polarimetric radar (NOXP)
<p>This dataset provides level 2 radar data collected by NOAA X-band dual Polarimetric radar (NOXP) during <span>Verification of the Origins of Rotation in Tornadoes Experiment</span> (VORTEX-2) in 2009-2010.</p> <p>Archive file names have form YYYY.NOX.sweep.MMDD.tar.gz, where YYYY denotes year, MMDD denotes month and day. Extracting the archive with a unix command like</p> <p>tar zxf YYYY.NOX.sweep.MMDD.tar.gz</p> <p>produces a directory tree in the current working directory. Data files are in paths of form:</p> <p>YYYY/NOX/sweep/MMDD/NOXYYMMDDHHMMSS.RAW????/swp.YYYMMDDHHMMSS.NOXPRVP.d.dd.0_PPI_v1</p> <p>where YYYY denotes year, MMDD denotes month and day, NOXYYMMDDHHMMSS.RAW???? identifies the radar volume (cycle of antenna pointing angles), and swp.YYYMMDDHHMMSS.NOXPRVP.d.dd.0_PPI_v1 denotes a file with data for one sweep (cycle of antenna pointing angles with the same elevation (PPI) or azimuth (RHI)). YYY is number of years since 1900. d.dd is the sweep angle.</p> <p>The sweep files are DORADE format, documented at https://www.eol.ucar.edu/sites/default/files/files_live/private/files/field_project/EMEX/DoradeDoc.pdf . RadxConvert, which is part of lrose (https://ncar.github.io/lrose-core), can rewrite the files in other formats as needed by other software.</p>
Hubbard Brook Experimental Forest: W3 Surface Water Sampling Sites – 2009-2010
This dataset presents field and analytical data collected during a surface water sampling survey on six dates between July 9, 2009 and October 1, 2010 in watershed 3 (W3) at the Hubbard Brook Experimental Forest, NH, USA. Samples were collected every 50 meters along an ephemeral to perennial stream network and at groundwater seeps wherever they were located. The dataset includes both a table of chemical analyses and a shapefile of sampling site locations. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station.
Variability in soil and litter arthropod populations in the Soil Freezing Study plots at the Hubbard Brook Experimental Forest, 2009-2010
Climate models for the northeastern United States (U.S.) over the next century project an increase in air temperature between 2.8 and 4.3 °C and a decrease in the average number of days per year when a snowpack will cover the forest floor. Warmer temperatures may benefit some litter arthropods by allowing them to expand their ranges and to increase their rates of reproduction. However, a reduction in snowpack depth and duration could offset these changes and lead to increased arthropod mortality because the snowpack plays an important role in insulating arthropods from freezing temperatures. We evaluated these potential changes by measuring arthropod abundance in the Soil Freezing Study plots at the Hubabard Brook Experimental Forest. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station.
WACCMX+DART 2009-2010 Hindcasts Experiments
The dataset consists of the median root mean square error and bias of a set of hindcast experiments performed using the Whole Atmosphere Community Climate Model eXtended (WACCMX) with data assimilation from the Data Assimilation Research Testbed (DART). The WACCMX DART hindcast experiments were initialized on the 1st and 15th of every month in 2009 and 2010. The root mean square error and bias are calculated with respect to the Aura MLS satellite observations and WACCMX DART analysis fields. The dataset is in support of a publication submitted to the AGU journal Space Weather.
Rijpfjorden 2009-2010 mooring diagram KROP mooring
<p>As part of the KROP - Kongsfjorden Rijpfjorden Observatory Programme, UiT The Arctic University of Norway and The Scottish Association for Marine Science maintain a marine observatory in the high-Arctic location Rijpfjorden, Svalbard, since 2006. The observatory consists of an array of CTDs, temperature loggers, ADCPs and a sediment trap, in addition to various other instruments or installations that change from year to year. This document contains the mooring diagram for the deployment year 2009-2010. CTD and ADCP data is published at the Arctic Data Centre (<a href="https://adc.met.no/)">https://adc.met.no/)</a>. Some previous data is available from NIRD (<a href="https://archive.sigma2.no/">https://archive.sigma2.no/</a>). All metadata is indexed by the SIOS data access portal (<a href="https://sios-svalbard.org/">https://sios-svalbard.org/</a>).</p>
Health Behaviors in School-age Children: 2009-2010
ClinicalTrials.gov study NCT00797095. IPD Sharing: Not stated. Countries: 1. Publications: 3.
Intercomparison of Middle Atmospheric Meteorological Analyses for the Northern Hemisphere Winter 2009-2010
<p>Model output required to reproduce figures in McCormack et al. (2021) ACP</p>
Kongsfjorden 2009-2010 mooring diagram KROP mooring
<p>As part of the KROP - Kongsfjorden Rijpfjorden Observatory Programme, UiT The Arctic University of Norway and The Scottish Association for Marine Science maintain a marine obervatory in the high-Arctic location Kongsfjorden, Svalbard, since 2002. The observatory consists of an array of CTDs, temperature loggers, ADCPs and a sediment trap, in addition to various other instruments or installations that change from year to year. This document contains the mooring diagram for the deployment year 2009-2010. CTD and ADCP data is published at the Arctic Data Centre (<a href="https://adc.met.no/" target="_blank" rel="noopener">https://adc.met.no/</a>). Some previous data is available from NIRD (<a href="https://archive.sigma2.no/">https://archive.sigma2.no/</a>). All metadata is indexed by the SIOS data access portal (<a href="https://sios-svalbard.org/" target="_blank" rel="noopener">https://sios-svalbard.org/</a>).</p> <p>The original diagram has been published together with the dataset in the NIRD data archive. DOI for data and original diagram: <a href="https://doi.org/10.11582/2022.00022" target="_blank" rel="noopener">https://doi.org/10.11582/2022.00022</a></p> <p>The purpose of this re-publication is ease of access to the entire series of mooring diagrams. </p>
Safety and Immunogenicity of Influenza Vaccine (Surface Antigen, Inactivated) [Ph.Eur], Formulation 2009-2010, When Administered to Non-Elderly Adult and Elderly Subjects
ClinicalTrials.gov study NCT00956449. IPD Sharing: Not stated. Countries: 1. Publications: 0.
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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.