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145 results for “aspen”
Site Location and Environmental Characteristics for 83 Locations of 6-163 Years Old Black Spruce, Alaska Paper Birch, and Aspen Stands Accoss Interior Alaska. Sampled in 2008-2010 and 2013-2015.
This dataset contains the GPS location, slope, orientation, elevation, forest type based on dominant tree biomass, Age, sampling year, total vascular cover, total lchen cover, deciduous index (Alexander et al. 2012, Ecosphere), basal area of black spruce, Alaska paper birch, trembling aspen, large deciduous shrubs and trembling aspen, organic layer depth, pH, heatload, approximated moisture class for all sites (Johnstone et al. 2008), gravimetric moisture content, and volumetric moisture content. This dataset was part of the site-level covariates used in a study of bryophyte post-fire succession in deciduous and coniferous successional trajectories. NOTE: there is some overlap between the >20 years old sites that were sampled by Heather Alexander with some of the data she submitted in relation to her 2012 Ecosphere paper.
Vegetation Data Collected with Point Frame for 83 Locations of 6-163 Years Old Black Spruce, Alaska Paper Birch, and Aspen Stands Across Interior Alaska. Sampled in 2008-2010 and 2013-2015.
This dataset contains point frame data for vegetation less than 1.3 m, including vascular plants, bryophytes, lichens, leaf litter and bare ground, as well as species codes used, as described in Jean et al. 2017 Canadian Journal of Forest Research. Samples of all encountered unknown species were collected for identification in the lab. Bryophyte nomenclature followed Anderson et al. (1990).
Bryophyte Cover Summary Data for 83 Locations of 6-163 Years Old Black Spruce, Alaska Paper Birch, and Aspen Stands Across Interior Alaska. Sampled in 2008-2010 and 2013-2015.
This dataset contains the summarized bryophyte (percent cover) data obtained from point frame measurements, as used in Jean et al. 2017 Canadian Journal of Forest Research. ?Samples of all encountered unknown species were collected for identification in the lab. Bryophyte nomenclature followed Anderson et al. (1990).
Aspen Forest Stem Map and Tree Census at the University of Michigan Biological Station, Pellston, MI 1974-2018
In 1974, a one hectare plot was established at the University of Michigan Biological Station to further understand successional trajectories of birch and aspen forests in northern Michigan. Trees with a DBH greater than 5 cm were inventoried and later, the location of the tree within the plot was documented by the UMBS resident biologist. Plots were remeasured 5 additional times by different groups at the station.
Tree regeneration after fire: Wickersham Dome long-term vegetation study, aspen height data
These data represent the most recent set of observations (made in 2002 by J. Johnstone) for several long-term vegetation monitoring plots near Wickersham Dome that were set up by Les Viereck and Joan Foote following the 1971 wildfire and 1978 experimental burns. Earlier records are available in the BNZ long-term vegetation database. This dataset documents tree seedling/sapling and shrub measurements made in 2002. Lists heights of all individual trembling aspen (Populus tremuloides) present in a plot.
Survey of Aspen leaf miner (Phyllocnistis populiella) Oviposition Per Leaf Sampled in Interior Alaska Aspen Stands near Fairbanks from 2004 to 2022
The datasets contains annual counts of aspen leaf miner eggs, incipient mines, and egg scars (indicating egg predation) on aspen leaves over time. There are two files representing pilot data from 2004-2005 and data 2006-2022. The 2004-05 dataset does not include egg scars, indicaitive of egg removal, and therefore totals underestimate total oviposition. The 2006-2022 dataset does include egg scars and therefore can be used to estimate total oviposition per leaf.
Survey of aspen herbivory and aspen leaf miner (Phyllocnistis populiella) survival and abundance from 2006 to 2022
Leaf-level measurements of herbivory damage on quaking aspen caused by the aspen leaf miner (ALM) and externally-feeding herbivores, and ALM abundance and survival, from four sites near Fairbanks, Alaska over time.
Effect of the aspen leaf miner feeding damage on aspen leaf gas exchange and water relations from south-facing site on the University of Alaska Fairbanks campus: Fairbanks, Alaska 2018
This dataset addresses the effects of epidermal leaf mining by the aspen leaf miner (Phyllocnistis populiella) on the physiology and water relations of aspen leaves. The dataset contains measurements of gas exchange, water potential, water content, and delta13C of aspen leaves manipulated to bear leaf mining damage on the top (adaxial) leaf surface only, the bottom (abaxial) leaf surface only, or no mining damage.
Integration of the Ash-Based Treatment of the Anerobic Digestate in a Wider Valorization Process by Aspen Plus® Simulation
<p>Spreadsheets for the 7 scenarios investigated in the article: "Aspen Plus® process simulation model of the biomass ash-based treatment of anaerobic digestate for production of fertilizer and upgradation of biogas". A comparison of the following 7 process strategies is mentioned in the above article:<br> Case 1 is the foundation case (labelled as untreated MD) that served as benchmark and it implied the production of MD using the original PSM of Rajendran et al. [11].<br> In Case 2 a stream of pure hydrochloric acid was incorporated at a 0.1000 times the flowrate of the MD towards the ionization reactor (1HCl:10MD).<br> In Case 3 a stream of hydrochloric acid was incorpo-rated at 0.1176 times the flowrate of the MD towards the stoichiometric-equilibria reactor (1HCl:8.5MD).<br> In Case 4 a stream of hydrochloric acid was incorporated at 0.1212 times the flowrate of the MD towards the ionization reactor (1HCl:8.25MD).<br> The remaining 3 cases are built on Case 3 (i.e. considering the previous acidification of the MD with the dose of 3.18 mEq HCl/g).<br> In Case 5 the stream of SSA (Table 1) was incorpo-rated at 0.0040 times the flowrate of the MD towards the stoichiometric-equilibria reactor (1SSA:1.76HCl:15MD).<br> In Case 6 the stream of ash (Table 1) was incorporated at 0.0060 times the flowrate of the MD towards the ionization reactor (1SSA:1.18HCl:10MD).<br> In Case 7 the stream of ash was incorporated at 0.0080 times the flowrate of the DM to the stoi-chiometric-equilibria reactor (1SSA:0.88HCl:7.5MD). <br> Additionally, MS Word file summarizes the most relevant data: Table S1, Mass balance of the nutrients monitored in the Aspen Plus® simulations. (1/3); Table S2, Mass balance of the nutrients monitored in the Aspen Plus® simulations. (2/3); Table S3, Mass balance of the nutrients monitored in the Aspen Plus® simulations. (3/3); Table S4, List of the components in the PSM of Rajendran et al. [11]. (1/3); Table S5, List of the components in the PSM of Rajendran et al. [11]. (2/3); Table S6, List of the components in the PSM of Rajendran et al. [11]. (3/3).</p>
Aspen NPP: Tree density and basal area by diameter sizeclass in upland mid- and late-successional stands: 1989-2008
This data set is derived from BNZ LTER inventory plots. Stand density and basal area are listed by diameter size class of live aspen trees for each replicate stand within mid-successional upland landscapes by year from 1989-2008.
Aspen NPP: average NPP per tree by diameter sizeclass for 4 time periods between 1993 and 2008
This data set is derived from BNZ LTER inventory plots, where DBH of all trees is measured every 3 to 4 years, and increment changes in AG biomass are derived from allometric equations. Data included in this file were obtained from 1993, 1997, 2000, 2004 and 2008 inventories, generating 4 growth increments between 1997 and 2008. Data are reported by diameter sizeclass (10 cm increments), and include NPP increments (averaged across all trees within each landscape and successional stage) for which adequate numbers of trees (typically >5) were present to obtain useful measurements (see N in data file).
Aspen NPP per tree calculated from dendrometer bands annually from 1994 to 2008
This data set is derived from BNZ LTER inventory plots, where band dendrometers are in place on trees within each diameter size class (typically 10 trees per 10 cm increment diameter size class). Dendrometer bands are read in the fall each year. Biomass is calculated from allometric equations, from which annual biomass increments are derived. Data are reported as the average annual growth per tree across all trees within a given landscape and successional stage and reported as kg biomass/tree/year.
Aspen tree diameter vs age in mid-successional long-term Bonanza Creek LTER inventory plots
This data lists age and diameter for aspen trees of varying diameters growing in mid successional long-term BNZ LTER inventory plots in upland landscapes.
Post-fire succession in Delta Junction burns: Measurements of aspen and spruce stem density and biomass in 1987, 1990, 1994 and 1999 burns
This dataset contains measurements of stem density and biomass of aspen and black spruce taken during summer 2008 in 4 burns located near Delta Junction (1987, 1994, 1999) and Tok (1990). These data can be found in Shenoy et al. 2011.
Post-fire succession in 1994 Hajdukovich Creek burn: Measurements of aspen and black spruce stem density
This dataset contains measurements of stem density of aspen and black spruce taken during summer 2009 in the 1994 Hajdukovich Creek burn.
Post-fire succession in 1994 Hajdukovich Creek burn: Measurements of aspen and black spruce biomass
This dataset contains measurements of biomass of aspen and black spruce taken during summer 2009 in the 1994 Hajdukovich Creek burn.
Post-fire succession in 1994 Hajdukovich Creek Burn: in-situ measurements of aspen and spruce inorganic nitrogen uptake rates
This dataset contains in-situ measurements of inorganic nitrogen uptake rates in aspen and spruce saplings regenerating in one severely and one lightly burned site in the 1994 Hajdukovich Creek burn.
Post-fire succession in 1994 Hajdukovich Creek Burn: measurements of root biomass, shoot biomass, total plant C content, total plant N content for aspen and spruce
This dataset contains measurements of root biomass, shoot biomass, total plant C, and total plant N of 10 aspen and 10 spruce saplings harvested in one severely burned and one lightly burned site in the 1994 Hajdukovich Creek burn.
Post-fire succession in 1994 Hajdukovich Creek Burn: measurements of average basal area increment for the years 2000-2010 for aspen and spruce
This dataset contains measurements of average basal area increment from 2000-2010 in aspen and spruce individuals regenerating in the 1994 Hajdukovich Creek burn.
Tree ring, leaf mining, climate, and remote sensing data from aspen leaf miner survey sites: III - Climate, leaf mining, and NDVI data
This dataset contiains annual site-level measurements from 2004 - 2015 of growing season climate moisture index ( GS CMI; summed CMI from May - September), average site level leaf mining, and mean July - August normalized difference vegetation index (NDVI) derived from Landsat, GIMMS3g, MODIS Aqua, and MODIS Terra
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Allen Brain Atlas
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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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