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1,705 results for “1988”
ERA5-Land selected indicators daily aggregates for the Latin America region, 1988
<p>This deposit contains NetCDF files with daily aggregates from Copernicus Era5-Land eight selected indicators, covering the Latin America region, for 1988.</p><p>Each file represents one indicator aggregation for one month of the year. Inside each NetCDF file, the layers contain the daily aggregates.</p><p>For 2m dewpoint pressure, 10m u component of wind, 10m v component of wind, surface pressure, the mean function was used for aggregation. For total precipitation, the sum function was used for aggregation. For 2m temperature, the functions maximum, mean and minimum were used for aggregation.</p><p>Those files were created using the <a href="https://github.com/ErikKusch/KrigR">KrigR</a> package.</p>
Assessing change in ecosystem processes twenty four years after the 1988 Yellowstone Wildfires, 2013
The extent of young postfire conifer forests is growing throughout western North America as the frequency and size of high-severity fires increase, making it important to understand ecosystem structure and function in early seral forests. Understanding nitrogen (N) dynamics during postfire stand development is especially important because northern conifers are often N limited. We re-sampled lodgepole pine (Pinus contorta var. latifolia) stands that regenerated naturally after the 1988 fires in Yellowstone National Park (Wyoming, USA) to ask: (1) How have N pools and fluxes changed over a decade (15 to 25 years postfire) of very rapid forest growth? (2) At postfire year 25, how do N pools and fluxes vary with lodgepole pine density and productivity? Lodgepole pine foliage, litter (annual litterfall, forest-floor litter), and mineral soils were sampled in 14 plots (0.25-ha) that varied in postfire lodgepole pine density (1,500 to 344,000 stems ha-1) and aboveground net primary production (ANPP; 1.4 to 16.1 Mg ha-1 yr-1). Previous data collected 15 and 17 years postfire (i.e., 2003 and 2005) provided a reference for assessing change in ecosystem process rates over time. At that time, lodgepole pine foliar nitrogen (N) concentrations had not yet suggested N limitation, and tree density and net primary production strongly influenced ecosystem carbon (C) and N stocks. These data were collected in 2012 and 2013 and are associated with the following publication: Turner, M. G., T. G. Whitby, and W. H. Romme. 2019. Feast not famine: Nitrogen pools recover rapidly in 25-yr old postfire lodgepole pine. Ecology (In press).
Vegetation classification, Andrews Experimental Forest and vicinity (1988,1993,1996,1997,2002, 2008)
This data set includes vegetation classifications from the Willamette National Forest (years 1993, 1996, 1997, 2002, and 2008) and from 1988 thematic mapper satellite image.
Soil physical and chemical properties based on genetic horizon from 4 replicate pits placed around the replicate LTER control plots sampled in 1988 and 1989.
Dataset contains the following soil properties for each genetic horizon - site, Soil pit, upper and lower boundary (cm), Mg meq/100gm, Ca meq/100gm, K meq/100gm, CEC meq/100gm, pH, %C, %sand, %silt, %clay, Total %N, Total %P, % organic matter, Mn meq/100gm, Available-P ppm, %CO3, bulk density gm/cm3, Volume wt gm/m2.
Long Term Tree Growth Sites: Hourly Temperature and Hourly Relative Humidity at 150 cm from 1988 to Present
Data logger instrumentation was installed at several of the of the Long Term Tree Growth (LTTG) study sites to monitor air temperature and relative humidity in various forest types.
Cone Pond Watershed: Soil Profiles (Pedons), 1988-2023
Cone Pond Watershed: Soil Profiles (Pedons), 1988-2023 This dataset documents pedons (soil profiles) sampled at Cone Pond Watershed, Thornton, New Hampshire. Since the early 1980’s, Cone Pond, on the Pemigewasset District of the White Mountain National Forest, has been an active research satellite site to the nearby Hubbard Brook Experimental Forest. In 1988, intensive monitoring began as part of a comprehensive watershed scale ecosystem study. A weir was built on the main inlet stream, just above its mouth at Cone Pond, to monitor streamflow. Two rain gages were installed to monitor atmospheric deposition and multiple studies of major ecosystem components were initiated. Soil profiles documented in this dataset were sampled between 1988 and 2003. All descriptive profile and horizon data as well as chemical analyses of samples of genetic horizons are included in this dataset. Samples from 123 of these horizons have been accessioned into the Hubbard Brook physical sample archive; the archived mass of each is included in the horizon table. In addition to these pedons sampled in detail, a number of reconnaissance observations, made at a lower level of detail, and without sampling, were made in 2023 in order to validate a hydropedologic soil model created at Hubbard Brook. These data are included in a separate table. 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.
Rainfall runoff water chemistry from 2 x 2 meter plots in grassland and creosotebush communities at the Jornada Basin LTER, 1988-1990
This data package contains data from natural rainfall-runoff plots installed on lands managed by the Chihuahuan Desert Rangeland Research Center (CDRRC) and the Jornada Experimental Range (JER) during the early years of Jornada Basin LTER (LTER-I and II). The purpose of this study was to analyze dissolved chemicals in surface runoff after precipitation events from creosotebush and grassland areas. In addition, some plots were treated with chlordane to remove termites. Nine hydrology runoff plots in the creosotebush sites (Larrea tridentata) were established in 1983 and 12 black grama (Bouteloua eriopoda) grassland runoff plots were established in 1989. Chemical analyses began in 1988 (1989 for grassland plots). Each plot was 2 × 2 square meters and surrounded on 3 sides by a metal frame. At the lower slope of the plot is a trough that collects the runoff for analysis. The data set includes the date of sampling, plot IDs, volume (L) of surface water runoff collected, and concentrations of F, Cl, NO3, SO4, NH4, Ca, Mg, Na, K, total N, and total P in mg/L. This study was completed in fall 1990.
Termite foraging data from bait mass loss at eleven locations at the Jornada Basin LTER site, 1988-2000
This data package contains data on yearly mass loss of termite baits at the Jornada Basin LTER site in southern New Mexico, USA. Termites are important to litter decomposition and nutrient cycling in desert grasslands. This study measured annual feeding activity on paper baits by subterranean termites in desert shrubland and black-grama (Bouteloua eriopoda) grassland ecosystems over twelve years. Eleven sites, known as the "consumer plots" were included in the study. Toilet paper roll termite baits were placed on grids on each consumer plot. Data include initial bait weights before deployment, and bait weights after they were retrieved from the field each year. Mass loss of the baits was calculated as a measure of termite foraging activity. This study is complete.
Archived plant, soil, water and microbial samples at the Kellogg Biological Station, Hickory Corners, MI (1988 to 2016)
Dataset AbstractPlants, soil, water and microbial samples are archived. Small quantities are available for research by contacting: Plant and Soil Samples — Stacey Vanderwulp Water Samples — Steve Hamilton Microbial Samples — Tom Schmidt original data source http://lter.kbs.msu.edu/datasets/55
KBS GLBRC Experiment at the Kellogg Biological Station, Hickory Corners, MI (1988 to 2019)
Dataset Abstract Great Lakes Bioenergy Research Consortium Sustainably Experiment activity logs and background information. original data source http://lter.kbs.msu.edu/datasets/63
Gopher-disturbed and undisturbed soil Oribatid mite data for Martinelli slope, 1988.
Soil cores were collected from undisturbed and pocket gopher (Thomomys talpoides) disturbed alpine tundra. Cores were split in half longitudinally with one half being used for extraction and identification of Oribatid mites. Disturbed soils included both old and fresh gopher mounds and all study sites were located on the Martinelli slope directly above the 25 permanent plots. The cores were collected in 1988.
Climate data for C1 chart recorder, 1982 - 1988.
Climatological data were collected from a Niwot Ridge climate station (C1 at 3018 m) throughout the year. Parameters measured were temperature, relative humidity, solar radiation, barometric pressure, wind speed, and run of wind. The station was instrumented with a thermohygrograph (regularly calibrated and checked with maximum and minimum thermometers and psychrometers), which was equipped with a Bourdon tube (to measure temperature) and a banjo-spread hair element (to measure relative humidity). The thermohygrograph was situated in a white, all wood, louvered Stevenson screen which was oriented with the door facing north. Solar radiation was recorded on a bimetalic strip mechanical actinometer. Ninety percent of solar radiation from 360 to 2000 nm was transmitted through the instrument's glass dome. Barometric pressure was recorded on a Friez microbarograph at the Mountain Research Station at 2880 m. The instrument was calibrated against a full-range mercurial, Fortin-type barometer. Wind speed (peak gust) was measured with a 3-cup, AC-generating anemometer that continuously recorded onto an Esterline Angus strip chart recorder. Average wind speed was calculated from the peak gust trace. Run of wind was measured with a Belford totalizing cup anenometer with a counter (at a height of approximately 3 meters above ground). The thermohygrograph, actinometer, and microbarograph all used wind-up or battery-driven clock drives that rotated the recording chart on a right cylindrical drum with a fixed period between 24 h and 861 h depending on the gears used. These clock mechanisms were virtually identical and therefore completely interchangeable among the instruments.
Climate data for D1 chart recorder, 1982 - 1988.
Climatological data were collected from a Niwot Ridge climate station (D1 at 3743 m) throughout the year. Parameters measured were temperature, relative humidity, solar radiation, wind speed and run of wind. The station was instrumented with a thermohygrograph (regularly calibrated and checked with maximum and minimum thermometers and psychrometers), which was equipped with a Bourdon tube (to measure temperature) and a banjo-spread hair element (to measure relative humidity). The thermohygrograph was situated in a white, all wood, louvered Stevenson screen which was oriented with the door facing north. Solar radiation was recorded on a bimetalic strip mechanical actinometer. Ninety percent of solar radiation from 360 to 2000 nm was transmitted through the instrument's glass dome. Wind speed (peak gust) was measured with a 3-cup, AC-generating anemometer that continuously recorded onto an Esterline Angus strip chart recorder. Run of wind was measured with a Belford totalizing cup anenometer with a counter (at a height of approximately 3 meters above ground). Average wind speed was calculated from the peak gust trace. The thermohygrograph and actinometer both used wind-up or battery-driven clock drives that rotated the recording chart on a right cylindrical drum with a fixed period between 24 h and 861 h depending on the gears used. These clock mechanisms were virtually identical and therefore completely interchangeable among the instruments.
Plant species composition data for Martinelli slope, 1988 - 1997.
Permanent plots were established on the Martinelli slope in 1987. The 25 plots are organized in a Latin square design consisting of 5 rows and 5 columns. Plots are numbered according to row and column, beginning with 11 at the northwest corner of the grid. Plot 55 is located at the southeast corner of the grid. Each plot has dimensions of 1.5 m x 2.0 m. The corners of each plot are marked with rebar stakes. Each plot is divided into an evenly spaced grid consisting of 15 x 20 points on each side, for a total of 300 points, with each point situated 10 cm from its nearest neighbors. Plant species composition was measured using the point-quadrat method every year. The point-quadrat method used was similar to that described by Auerbach (1992): The point-quadrat method was used for estimating canopy stratification and plant cover. Aluminum point-quadrat frames were 3m^2 in size, with double-layer filament spaced 10 cm apart to make a 145 x 195 cm grid for a total of 300 sample points per plot. Plant genus and species at the top and bottom of the canopy were recorded hits at each point. In addition, vegetation condition and hit quality were recorded for each of the data points.
Figure 5 in Brucerolis gen. n., and Acutiserolis Brandt, 1988, deep-water southern genera of isopods (Crustacea, Isopoda, Serolidae)
Figure 5. Photographs of preserved material. Brucerolis nowra, sp. n. a, b male (26 mm) NMV J15723 c paratype juvenile female (20 mm) NMV J15723 d holotype male (31 mm) NMV J58261 e paratype male (26 mm) NMV J55674. Scale bar referable to all except b.
Figure 4 in Brucerolis gen. n., and Acutiserolis Brandt, 1988, deep-water southern genera of isopods (Crustacea, Isopoda, Serolidae)
Figure 4. Acutiserolis spinosa (Kussakin, 1967), male (34 mm) from NIWA 23526. p3-p7 pereopods 3–7 pl2 pleopod 2.
Figure 7 in Brucerolis gen. n., and Acutiserolis Brandt, 1988, deep-water southern genera of isopods (Crustacea, Isopoda, Serolidae)
Figure 7. Brucerolis nowra, sp. n., holotype male (31 mm) NMV J58261. mdl, mdr mandible incisor, lacinia mobilis and spine, left and right mdp mandibular palp, distal articles mx1, mx2 maxillae 1, 2 mp maxilliped.
Figure 2 in Brucerolis gen. n., and Acutiserolis Brandt, 1988, deep-water southern genera of isopods (Crustacea, Isopoda, Serolidae)
Figure 2. Acutiserolis spinosa (Kussakin, 1967), male (34 mm) from NIWA 23526. a ventral view b lateral profile c head a1, a2 antennae 1, 2 p1, p2 pereopods 1, 2 with detail of propodus and dactylus in lateral and face views; u, uropod. Acutiserolis sp., male (31 mm), NIWA 31205 d propodus and dactylus of pereopod 2.
Figure 1 in Brucerolis gen. n., and Acutiserolis Brandt, 1988, deep-water southern genera of isopods (Crustacea, Isopoda, Serolidae)
Figure 1. Photographs of preserved material. Acutiserolis spinosa (Kussakin, 1967). a, b figured male (34 mm) c ovigerous female (32 mm) d ovigerous female (30 mm) e juvenile male (29 mm) f ovigerous female (31 mm). a, b, d, e from NIWA 23526 c from NMV J58091 f from NIWA 24311. Acutiserolis sp. g, h male (31 mm), NIWA 31205. Scale bar referable to all except g.
Figs 9–10 in Five new species of the genus Singularia Arenberger, 1988 (Lepidoptera, Pterophoridae)
Figs 9–10. Singularia tolima Kovtunovich & Ustjuzhanin sp. nov. 9. Holotype (ZISP 1839). 10. Holotype, genitalia (ZISP 1839).
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