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2,195 results for “2005”
California Blue Oak reproduction and recruitment, Sierra Foothills, 2005-2010
This data archive contributes to the study of blue oak conservation by quantifying reproductive success (numbers of new seedlings and their sizes) and survival and growth of the younger life stages (seedlings and saplings), and by exploring how the timing of grazing, topographical variables, and rainfall limit reproduction, growth, and survival for these life stages, helping to identify potential management and restoration strategies to enhance the population viability of blue oak. We followed a population of blue oak (Quercus douglasii) seedlings and saplings in the Sierra Nevada foothills, measuring adult seed production and initial seedling recruitment (number and size of new seedlings), seedling growth and survival, seedling recruitment to saplings (growing greater than 10 cm in height), and sapling growth and survival. We tested the impacts on these demographic processes of timing and intensity of grazing, light availability, water availability, and individual size. We published our analysis of these data as part of the 8th Oak Woodland Symposium. This data archive contains the underlying data for our analysis plus some data we did not include in our analysis (residual dry matter, photosynthetically active radiation, percent exotic/native cover), including raw data and R and Perl scripts used to format them for analysis, and additional information not included in the conference proceedings.
Measurements of ethylene production (using the acetylene reduction assay) as a proxy for nitrogen fixation of epiphytes on seagrass in West Falmouth Harbor during July from 2005 through 2019.
West Falmouth Harbor (West Falmouth, MA, USA) has been experiencing a dramatic increase in nitrogen loading from an upgradient municipal wastewater treatment facility since the early 2000’s. As part of a long-term study into the effects of this nitrogen enrichment, we have measured nitrogen fixation rates of seagrass-associated epiphytes using the acetylene reduction technique. Samples were taken annually in July at two sites, one in the well-flushed outer basin (OH) and one in the inner basin closer to the dominant groundwater N source (Snug Harbor, SH). Additional data are presented in 2019 at 18 sites spatially distributed through the seagrass bed to assess spatial heterogeneity. Individual replicate data are presented. These data are in support of a manuscript submitted to the journal Biogeochemistry by Marino et al, submitted for publication (12/2022).
Isotopes and content of carbon, nitrogen, and sulfur of eelgrass (Zostera marina) from West Falmouth Harbor from 2005 through 2019
West Falmouth Harbor (West Falmouth, MA, USA) has been experiencing a dramatic increase in nitrogen loading from an upgradient municipal wastewater treatment facility since the early 2000’s. As part of a long-term study into the effects of this nitrogen enrichment, we have been assessing changes in the extent and health of the eelgrass (Zostera marina) community within the harbor. Eelgrass shoots were collected during the summer and run for carbon (C), nitrogen (N), and sulfur (S) content and isotopic composition. Samples were analyzed from 7 stations in the more well-flushed outer harbor (OH), 4 stations in the middle of the harbor (MH), and 6 stations in the inner portion of the harbor in close proximity to a high groundwater nitrate source (Snug Harbor, SH). Carbon data is available from 2011 through 2018, nitrogen data from 2006 through 2018, and sulfur data from 2005 through 2019 with a few samples from 2021. Sulfur results have been published in Haviland et al. 2022 (doi: 10.1002/lno.12025).
Tree species identity, diameter and qualitative canopy health measurements (full, partial or dead) from 2005 to 2023 on 12 experimental oak loss plots in Black Rock Forest, NY.
Black Rock Forest established a series of 12, 0.56 ha plots in 2005 to assess impacts of the loss of tree in the genus Quercus on the forest ecosystem (entitled the Future of Oak Forests experiment). Three trunk girdling treatments, with control plots were instituted in 2008. Each plot also contained an ~10m by ~15m deer exclosure to assess the impact of herbivory post-disturbance. Trees were measured twice per year from 2008 to 2013 (except 2009 when trees were measured once) and once per year from 2014 to 2023. Data include tree species identity, diameter at breast height (DBH), canopy health (a qualitative assessment of approximate cover as full, partial or dead), presence/absence of sprouts, and location within the plot. All live trees equal to or larger than 2.5 cm DBH are included in the dataset.
Aphid Collection Tower Site at KBS at the Kellogg Biological Station, Hickory Corners, MI (2005 to 2013) (Reformatted to a Darwin Core Archive)
This data package is formatted as a Darwin Core Archive (DwC-A, event core). For more information on Darwin Core see https://www.tdwg.org/standards/dwc/. This Level 2 data package was derived from the Level 1 data package found here: https://pasta.lternet.edu/package/metadata/eml/edi/347/2, which was derived from the Level 0 data package found here: https://pasta.lternet.edu/package/metadata/eml/knb-lter-kbs/49/25. The abstract below was extracted from the Level 0 data package and is included for context: Survey of migration of soybean aphid and other aphids of economic interest in 10 midwestern States. Aphids are collected using a suction trap. original data source http://lter.kbs.msu.edu/datasets/52
Coarse woody debris volume and mass from line transect inventory from reference stands and inventory plots of the Pacific Northwest, 1997 to 2005
These data can be used to provide an inventory of the volume of coarse woody debris stored in forests.
Dimensions, cover, volumes, mass and nutrient stores of Coarse Woody Debris (bark and wood from logs, snags, and stumps) from forests plots in the western United States and Mexico, 1977 to 2005
These data provide an inventory of the mass and nutrients stored within various forest types by coarse woody debris (CWD). CWD inventoried includes standing dead trees (greater than 10 cm diameter at breast height) and dead and downed wood (greater than 10 cm large end and >1 long). The majority of measurements are from permanent sample plots associated with the Andrews LTER permanent sample plots network. This includes clusters of plots at and near the H. J. Andrews Experimental Forest (OR), Cascade Head Experimental Forest (OR), Mount Rainier National Park (WA), Olympic National Park (WA), and Fraser Experimental Forest (CO). There are also data from plots in the Yucatan in Mexico; however, the live tree data for these plots is not available. The species of CWD inventoried are primarily those found in the Pacific Northwest; the dominants being Douglas-fir, western hemlock, mountain hemlock, western redcedar, Pacific silver fir, noblel fir, lodgepole pine, ponderosa pine, sitka spruce, and Englemann spruce. The majority of measurements were made in the 1975 to 1995 period; however plots are periodically remeasured and the intent to eventually remeasure all the plots except those in Mexico. In each plot measurements of log and snag dimensions (length and diameters), as well as decay class and species were recorded in the stands (td01201 file). These dimension data are combined with data on density and nutrient content for each species and decay class (td01202 file) and plot area and slope (td01203 file) to calculate CWD volume, cover, biomass and nutrient storage (td01204 file). When data on density and nutrient concentrations is not known, a list of substitutions is used (td01206). The adjust tree diameters if measurements are taken at the base of the dead tree, taper regressions are used (td01205).
Ecohydrology and Ecophysiology intensively measured plots in Watershed 1, Andrews Experimental Forest, 2005-2011
This database was developed to store data for ecophysiology and ecohydrology studies in Watershed 01 (WS01) at the H.J. Andrews Experimental Forest. The data include a combination of continuous sensor measurements (e.g. for soil moisture, soil temperature, air temperature, and relative humidity data) and repeated sampling (e.g., litterfall, dissolved organic carbon (DOC), rock content of soils). WS01 was clear cut between 1962 and 1966, burned, and replanted to varying degrees of success with Pseudotsuga menziesii, and a set of long-term plots that lie on transects normal to the main stream system was installed in 1962 to monitor plant succession and biomass development (TP073). The plots for these ecohydrological studies were co-located with a subset of TP073 plots to facilitate cross-referencing and cross-analysis of information. The boundaries of the TW006 plots are all at least 5 meters outside of the boundaries of the plant succession and biomass plots so as not to interfere with the long term integrity of those plots. An initial set of eight plots were installed for TW006 in 2004. All of these plots were located near transect #1 of the TP073 plots; i.e. the transect closest to the mouth of the watershed (see http://oregonstate.edu/feel/mapsVideos/transect_diagram.jpg, http://oregonstate.edu/feel/mapsVideos/airshed_base.pdf, and for a “virtual tour” of the watershed that illustrates the plot locations see http://oregonstate.edu/feel/mapsVideos/WS01_3d_spinningWheel2.AVI.MOV). Each of the eight plots (also known as “telemetry plots”) is associated with a bank of solar collectors and batteries that provide power for a network of sensors, and data is transmitted by telemetry via a relay station to the Andrews Headquarters. An additional set of 16 plots was established in 2009 to extend data collection through a broader area of the watershed and to represent the full range of vegetation cover classes. The locations of these was based on a stratified random sampling
Nutrient Concentrations of Vegetation in Small Watersheds at H. J. Andrews Experimental Forest, 2005 to 2006
Past research at the H. J. Andrews Experimental Forest has often occurred at different study locations at different times making comparisons between sites difficult. The small watersheds at the Andrews Forest have been the most extensively studied areas at this research forest and this database is intended to provide comparable nutrient information for these watersheds. The samples collected for these nutrient analysis used a uniform method during the summers of 2005 and 2006. Samples were collected throughout each watershed for the following pools; major tree species foliage, major tree species bark, major tree species wood, high shrubs, low shrubs, herbs. These nutrient analysis will compliment the quantification of biomass measurements made over the years in these watersheds.
Methane flux from experiemental plots near Toolik Lake, AK from 2005
The methane fluxes from tussock tundra and wet sedge plots near Toolik Lake, AK during the summer of 2005.
Toolik Inlet Discharge Data collected in summer 2005, Arctic LTER, Toolik Research Station, Alaska.
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 2005 study season. Water level was recorded with a Stevens PGIII Pulse Generator and water temperature and conductivity with a Campbell Scientific Model 247 Conductivity (EC) and Temperature probe. A Campbell Scientific CR510 data logger logged the data.
APEX fen Raised plot soil temperatures, 2005-Present
Soil temperature measurements were recorded hourly at an array of depths at APEX Fen beginning June 2005. APEX Fen is located in the Bonanza Creek LTER outside of Fairbanks, AK. APEX Fen uses a full-factorial water table (flooded or raised, lowered or drained, and control treatments, as well as a moisture gradient) by warming manipulation (warmed, unwarmed treatment).
APEX fen Lowered plot soil temperatures, 2005-Present
Soil temperature measurements were recorded hourly at an array of depths at APEX Fen beginning June 2005. APEX Fen is located in the Bonanza Creek LTER outside of Fairbanks, AK. APEX Fen uses a full-factorial water table (flooded or raised, lowered or drained, and control treatments, as well as a moisture gradient) by warming manipulation (warmed, unwarmed treatment).
Alaskan Peatland Experiment (APEX): Static chamber methane fluxes from fen sites, 2005-2011 and 2015-2016
Methane fluxes were collected at APEX rich fen during the summers of 2005 - 2011 and 2015-2016. APEX Fen is located in the Bonanza Creek LTER outside of Fairbanks, AK. APEX Fen uses a full-factorial water table (flooded or raised, lowered or drained, and control treatments, as well as a moisture gradient). A warming manipulation (warmed, unwarmed treatment) was in place in 2005-2011, but ceased by 2014. In 2015, vegetation manipulation subplots were installed within the water table treatments.
Water table level data from APEX Fen plots, 2005-2006
Water table level data from a soil climate manipulation experiment in an Alaskan rich fen (APEX). APEX Fen is located in the Bonanza Creek LTER outside of Fairbanks, AK. APEX Fen uses a full-factorial water table (flooded or raised- APEXele, lowered or drained- APEXlow, and control treatments- APEXcon, as well as a moisture gradient) by warming manipulation (warmed, unwarmed treatment). Automated water table measurements were collected in each plot using a pressure transducer and a datalogger.
Bonanza Creek moisture gradient soil core data: 2005.
This dataset contains the results of a soil sampling effort undertaken in 2005 along a landscape gradient within the Bonanza Creek LTER. Soils were sampled at 5 sites located within unique vegetative environments ranging from a wetland to an upland forest over a distance of 260 m. Data includes, but is not limited to percent carbon, percent nitrogen, 13C of the gas phase, 14C of the gas phase, 13C of the solid phase, bulk density, CO2 flux and DOC
Soil C, N, P, and Frankia nifD-K RFLP genotypes distribution from Alnus tenuifolia nodules in early and late succession 2005
This dataset contains genetic characterizations of Frankia inhabiting Alnus tenuifolia nodules in early and late succession sites in the Bonanza Creek Experimental Forest (BCEF). Characterizations were done using PCR-RFLP on the nifD-K spacer region of the Frankia genome. The position of each plant and each nodule were mapped in order to examine spatial patterns in Frankia distribution within sites. Soil chemistry data, including C, N, P, and pH, were also collected from mineral and organic layers.
Environmental and stand data for 88 sites located in the 2004 burns off the Steese, Taylor, and Dalton Highways, and for the 2005 burn near Eagle Plains, Yukon.
This dataset contains environmental variables collected at the site level (latitude, slope, aspect, moisture, etc.), pre-fire stand characteristics (tree density and basal area by species), and postfire regeneration (seedling density by species).
Tree ring widths from 1974-2003 for approximately 10 trees/site for 82 sites located in the 2004 burns off the Steese, Taylor, and Dalton Highways, and for the 2005 burn near Eagle Plains, Yukon.
This dataset contains annual raw ring width measurements from 1975-2003 for 793 black spruce trees in 84 sites. Ring widths were measured using WinDendro (resolution 0.001 mm) on two radii per stem disk collected 1.3 m along stem. Data is the average of the two radii measurments in each year for each tree. Accuracy of ring width dates were checked by crossdating using COFECHA.
Recruitment potential of southern and local tree species at the Coweeta Hydrologic Laboratory from 2003 to 2005
For the Southeast US, biogeography models predict an increase in aridity with vegetation changes from temperate deciduous forest to southern mixed forest if there are moderate temperature increases, or to savanna landscapes under drier scenarios (Bachelet et al. 2001). Given this forecast, I hypothesize that the colonization potential of coastal and more southern species in the North Carolina Piedmont and southern Appalachians will be enhanced by a warmer and drier climate. The nature of this vegetation shift will mainly depend on the adaptability of these species to the specific characteristics of the sites. Considering that recruitment is the limiting stage for successful establishment of tree populations (Harper 1977), I propose to study recruitment limitation of potential migrant species relative to local trees in two regions in North Carolina, the Piedmont and the southern Appalachian mountains. Experimental manipulations will allow the quantification of recruitment potential of non-native tree species and their performance with respect to native species. Field and greenhouse experiments will be used to develop and parameterize a model of community recruitment. I will employ the model to elucidate potential changes in forest species composition under a suite of future climate scenarios. Both data and modeling work are expected to improve our understanding about the mechanisms that may be involved in restructuring communities in the face of a changing climate.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
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