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1,605 results for “1995”
Litterfall on the elevational gradient (Group 5) from the Coweeta Hydrologic Laboratory in 1995
Null Hypothesis: Litterfall weights not statistically different between plots on the altitudinal gradient.
Litterfall on the elevational gradient (Group 6) from the Coweeta Hydrologic Laboratory from 1995 to 1996
Null Hypothesis: Litterfall weights not statistically different between plots on the altitudinal gradient.
Fine root dynamics along an elevational gradient in the southern Appalachian mountains in the Coweeta Hydrologic Laboratory from 1994 to 1995 (lengths of fine root segments)
The lengths of fine root segments visible in photographs of roots growing against the windows of minirhizotron boxes were measured.
Riparian Study: Soil Moisture (TDR) from the Coweeta Hydrologic Laboratory from 1993 through 1995
TDR sites are located at intervals along the hillslope beginning 0-5 m from stream edge and continuing up the slope to the ridgetop near the edge of the white pines of WS 1. Originally, seventeen plots at two depths with three replicates each were installed. After the September 1995 collection, Hurricane Opal irreparably damaged three of the control plots. Fourteen plots remain and are measured on a biweekly basis.
Litter decomposition data from the Coweeta Hydrologic Laboratory from 1993 to 1995
Litter bags (5 X 5 cm, 1mm nylon mesh) were filled with 5 0.2 g of air dried litter from R. maximum or Q. prinus (two dominant tree species in the watershed). The bags were then placed upon the soil surface along transects 1, 5, and 15 meters upslope from the stream (as described for microbial C and N). Bags were placed in the field in December, 1993. Three replicate bags of each litter type were collected from both sites and all transects, every three months. Upon retrieval, leaves were dried and cleaned of any residual soil particles. Samples were then weighed to determine percent weight loss, over time. In these data files, litter decomp studies are saved by species (Q. prinus or R. max) and then by distance from the stream (1, 5, or 15 meters). The # of days column is the amount of time the bags were in the field. % weight remaining is> the proportion of weight upon collection to initial weight. This is followed by the average % weight remaining for each collection date and its standard deviation. The average C/N is the C/N ratio for the litterbags, by collection date. The total C and N for litter was determined using the Carlo Erba Total C and N analyzer.
Vegetation cover data from line-intercept transects in the long-term Small Mammal Exclusion Study (SMES) at Jornada Basin LTER, 1995-2005
This package contains perennial vegetation cover data measured using the line-intercept method from plots with various levels of herbivore exclusion on Jornada Experimental Range (JER) and Chihuahuan Desert Rangeland Research Center (CDRRC) lands. Study sites were established in 1995; one in black grama grassland and the other in creosotebush shrubland to compare the impact of herbivores on ecosystem processes between these vegetation types. Parallel studies were established at the Sevilleta LTER site (New Mexico, USA) and Mapimi Biosphere Reserve (Durango, Mexico). Each study site is 1 km by 0.5 km in area. Four replicate experimental blocks were randomly located at the grassland study site to measure vegetation responses using exclusion treatments including a) all mammalian herbivores, including cattle, lagomorphs, and rodents, b) lagomorphs and cattle only, c) cattle only, and d) control accessible to all herbivores. Because grazing cattle are excluded from the entire creosote site, only three replicate experimental blocks were randomly located there including a) all mammalian herbivores, including lagomorphs, and rodents, b) lagomorphs only, and c) control accessible to all herbivores. Thirty-six sampling points were positioned at 5.8-meter intervals on a systematically located 6 by 6 point grid within each plot. A permanent one-meter by one-meter vegetation measurement quadrat is located at each of the 36 points. The vegetation line-intercept measurements in this data package were made in fall 1995 and fall 2005 to coincide with low-level aerial photography campaigns. Three 29-meter lines were measured along three out of six rows of permanent vegetation quadrats. Intercept locations for live, perennial plant cover and bare ground were measured along each line at 10cm resolution, which is comparable to the resolution of the aerial photos. Plants were identified to species level where possible. The resulting cover data can used to ground-truth cover estimates fro
Cryptogam crust data from the long-term Small Mammal Exclosure Study (SMES) at Jornada Basin LTER, 1995-2005
This data package contains cryptogam cover data from plots with various levels of herbivore exclusion on Jornada Experimental Range (JER) and Chihuahuan Desert Rangeland Research Center (CDRRC) lands. Study sites were established in 1995; one in black grama grassland and the other in creosotebush shrubland to compare the impact of herbivores on ecosystem processes between these vegetation types. Parallel studies were established at the Sevilleta LTER site (New Mexico, USA) and Mapimi Biosphere Reserve (Durango, Mexico). Each study site is 1 km by 0.5 km in area. Four replicate experimental blocks were randomly located at each study site to measure vegetation responses using exclusion treatments including a) all mammalian herbivores, including cattle, lagomorphs, and rodents, b) lagomorphs and cattle only, c) cattle only, and d) control accessible to all herbivores. Thirty-six sampling points were positioned at 5.8-meter intervals on a systematically located 6 by 6 point grid within each plot. A permanent one-meter by one-meter vegetation measurement quadrat is located at each of the 36 points. Each year in spring and fall from 1995-2005, the percent of a quadrat covered in cryptogams was estimated by summing the percent of each 10 cm square within a quadrat (including 100 10-cm squares) containing cryptogams (See methods for a detailed explanation). Cryptogams (biological soil crusts) include lichens, algae, cyanobacteria, and moss. This study is complete.
Termite casing data from the long-term Small Mammal Exclosure Study (SMES) at Jornada Basin LTER, 1995-2005
This data package contains termite activity data in plots with a range of herbivore exclusion treatments on Jornada Experimental Range (JER) and Chihuahuan Desert Rangeland Research Center (CDRRC) lands. Study sites were established in 1995; one in black grama grassland and the other in creosotebush shrubland to compare the impact of herbivores on ecosystem processes between these vegetation types. Parallel studies were established at the Sevilleta LTER site (New Mexico, USA) and Mapimi Biosphere Reserve (Durango, Mexico). Each study site is 1 km by 0.5 km in area. Four replicate experimental blocks were randomly located at each study site to measure vegetation responses using exclusion treatments including a) all mammalian herbivores, including cattle, lagomorphs, and rodents, b) lagomorphs and cattle only, c) cattle only, and d) control accessible to all herbivores. Thirty-six sampling points were positioned at 5.8-meter intervals on a systematically located 6 by 6 point grid within each plot. A permanent one-meter by one-meter vegetation measurement quadrat is located at each of the 36 points. Each spring and fall from 1995-2005, a tape measure was used to measure the length, diameter, and height in centimeters of each termite casing in these vegetation quadrats. This study is complete.
Rodent data from trapping webs in the long-term Small Mammal Exclusion Study (SMES) at Jornada Basin LTER, 1995-2007
This data package contains rodent trapping data from plots with various levels of herbivore exclusion on the Jornada Experimental Range (JER) and Chihuahuan Desert Rangeland Research Center (CDRRC) lands. Study sites were established in 1995; one in black grama grassland and the other in creosotebush shrubland to compare the impact of herbivores on ecosystem processes between these vegetation types. Parallel studies were established at the Sevilleta LTER site (New Mexico, USA) and Mapimi Biosphere Reserve (Durango, Mexico). Each study site is 1 km by 0.5 km in area. Three replicate rodent trapping webs and four replicate experimental blocks were randomly located at each study site. Rodent trapping webs were used to measure rodent population density and species diversity over time, while the experimental blocks measure vegetation responses to herbivore exclusion treatments including a) all mammalian herbivores, including cattle, lagomorphs, and rodents, b) lagomorphs and cattle only, c) cattle only, and d) control accessible to all herbivores. Rodent populations were sampled from each of the three webs at each study site during overnight trapping campaigns twice per year, in the early (April-May) and late (September-October) summer between 1995 and 2007 (trapping study terminated after October 2007). During each trapping campaign, live-traps were left open for three consecutive nights, and captured animals were recorded on the three subsequent mornings. Each animal caught was identified, measured, and released at the same location where it was captured. This study is complete.
Surface abrasion and crust evolution following vegetation removal at the Jornada Basin LTER Scrape Site, 1995 to 2019
This data package contains measurements of soil surface abrasion and the evolution of soil crust shear strength following a soil and vegetation removal (scrape) treatment at the Jornada Basin LTER site in southern New Mexico, USA. Soil erosion and soil crust shear strength is measured at 3 locations along the prevailing wind direction across a site initially scraped in 1995 to remove the A soil horizon in a 100 meter radius semicircle. There are three monitoring stations (East, Middle, West) on the Scrape Site. The West site is the windward site, the East site is the leeward site, and the middle site is halfway between the other two. At each location, measurements are taken of the distance of the sand surface and soil crust to a crossbar set into the soil. Three "Torvane" measurements that measure the torque (shear strength) needed to break the crust are also made at each location. These measurements were made monthly until 2014, and are made annually since 2015. The Scrape Site has now become the location for the GROWES study (JRN study IDs 511 and 523). Data collection for this study is ongoing.
Mitochondrial COXI sequences and associated metazoan abundances in soils collected from the McMurdo Dry Valleys, Antarctica from 1995 to 2022
As part of an ongoing long-term sampling effort conducted by the McMurdo Dry Valleys Long Term Ecological Research (LTER) project, the top 10 cm of soil was collected from sampling sites across the McMurdo Dry Valleys region of Antarctica. A subset of these samples representing each valley and a differing disturbance legacy from the last glacial maximum were analyzed for this data package. Samples were collected between 1995 and 2022. In each sample, the abundances of three genera of nematodes (Scottnema, Eudorylaimus, and Plectus), tardigrades, and rotifers were calculated. Following metazoan extractions, individual Scottnema lindsayae were selected for mitochondrial Cytochrome c oxidase I (COX1) Sanger dideoxy sequencing. Sequencing resulted in 249 assembled sequences of 285 base pairs after alignment and trimming.
Pocket gopher esker-krummholz distance data for Martinelli slope and North of Tvan, 1995.
Two ares of Niwot Ridge were examined for simultaneous occurrences of krummholz and eskers created by Thomomys talpoides (Northern pocket gopher) burrowing, to establish a relationship between snowpack and gopher habitat. The krummholz east and northeast of the Martinelli slope and the krummholz north of T-van were surveyed for the abundance of gopher eskers. Using a tape measure, the minimum and maximum distances of the eskers from the krummholz vegetation were measured, with a value of 0 m indicating that the nearest soil core was immediately adjacent to or actually underlying a branch of the tree. With the use of a compass, both the northernmost and southernmost bearings were measured from the krummholz to the esker. The krummholz were tagged at the northeasternmost point whenever possible for consistency, or the northernmost branches of the leeward side of the tree island. All measurements were taken from the nearest protruberance of the krummholz.
Krummholz island soil inorganic and organic property data for East of Tvan, 1995 - 1996.
Previous work has shown that passage of Engelmann spruce (Picea engelmannii) and subalpine fir (Abies lasiocarpa) tree islands across tundra lowers the soil carbon and nitrogen storage capacity of the top 15cm of soil (A horizon) (Pauker and Seastedt 1996). This study shows that levels of KCl extractable ammonium and percent organic matter were also significantly higher in the A horizon of undisturbed tundra sites compared with soils underneath or immediately adjacent to (windward or leeward) the krummholz. The response of soil KCl extractable NO3- also showed this trend but was not statistically significant. Holtmeier and Broll (1992) suggested that the depletion of organics and nutrients following the passage of tree island may be associated with a reduced clay content. We analyzed a subsample of these soils for cation exchange capacity (CEC) and texture. We did not find significantly lower clay content in soils under or adjacent to krummholz compared with those from undisturbed tundra. In fact, percent clay was greater in krummholz and windward sites than in tundra sites. The percent clay of windward sites was significantly greater in windward soils than either krummholz or tundra soils. Clearly, depletion of organics following the passage of tree islands does not appear to be associated with a depleted clay content. We found that CEC was very highly significantly correlated with percent organic content (using percent organic data only from the subset of soils on which CEC was measured). Therefore, the CEC content of these soils would appear to be strongly associated with the organic content but not with the clay content. Percent soil moisture was significantly higher directly underneath the krummholz compared with the other sites. There was no effect of treatment on pH. We also investigated whether the organic matter lost in association with krummholz colonization (i.e. 1m from the tree) was replenished as tundra vegetation recolonized in the wake of the tree is
Soil temperature data for Saddle snowfence, 1992 - 1995.
A snowfence was built in 1993 on the Niwot Ridge Saddle grid to determine the effects of changes in snowpack on a number of variables, one of which was soil temperature. The study area was 60m x 125m. Soil temperatures were measured at two depths (0 and 15 cm) at each of 13 locations within the snowfence experiment area. Soil temperatures were measured at the same depths at each of 6 control locations outside of but near the snowfence experiment area. These measurements were made weekly to biweekly using fixed thermistors and data loggers. Sampling locations were each given a unique point identification number in order that these data could be incorporated into the Saddle GIS. The snowfence was oriented in a north/south direction and was 60m long. Each of the point identification numbers had a coordinate within the experiment area. The first number of the coordinate was the distance in m from the snowfence in an east/west direction, negative numbers being west of the snowfence and positive numbers being east of the fence. The second number in the coordinate was the distance in m from the southern terminus of the snowfence in a northerly direction. The point identification numbers and coordinates were: 203 (-40,30), 217 (-30,30), 231 (-20,30), 245 (-10,30), 252 (-5,30), 259 (5,30), 266 (10,30), 281 (20,30), 295 (30,30), 309 (40,30), 323 (50,30), 337 (60,30). Controls were located outside of the snowfence experiment area: 113 (approximately 10 m south of the -30,0 coordinate) in the Acomastylidetum rossii vegetation association, 114 (approximately 11 m south of the -25,0 coordinate) in the Acomastylidetum rossii vegetation association, 115 (approximately 8 m south of the 55,0 coordinate) in the Kobresietum myosuroidis vegetation association, 116 (approximately 5 m north of the 50,60 coordinate) in the Kobresietum myosuroidis vegetation association, 117 (approximately 3 m north of the -23,60 coordinate) in the Rhodiolo integrifoliae vegetation association, 118 (approxi
Water Balance Modeling Project at the Sevilleta National Wildlife Refuge, New Mexico: Vegetation Plot Data (1995-1998)
The water balance vegetation plots were part of a larger water balance monitoring project at the Sevilleta LTER. The plots were designed to measure the percent cover of photosynthetic/transpiring (green) plant species at specific sites where time domain reflectometry (TDR) probes and weather stations were already installed. In 1995, there were three sites (Field Station, Deep Well and Rio Salado). A 30m x 30m plot was installed at each site, and collection of vegetation data commenced in July 1995. Percent cover (green) and species identities were recorded monthly at a representative sample of 1m square quadrats within each plot.
Figure 2 in A new species of Novamundoniscus Schultz, 1995 (Isopoda, Oniscidea, Dubioniscidae) from the state of Tocantins, Brazil
Figure 2. Novamundoniscus adhara Campos-Filho & Cardoso sp. nov., (female paratype). (A) right mandible; (B) left mandible; (C) maxillula outer endite; (D) maxilla; (E) maxilliped
Figure 1 in A new species of Novamundoniscus Schultz, 1995 (Isopoda, Oniscidea, Dubioniscidae) from the state of Tocantins, Brazil
Figure 1. Novamundoniscus adhara Campos-Filho & Cardoso sp. nov., (female paratype). (A) habitus; (B) dorsal scale-seta; (C) cephalon, frontal view; (D) pleonites 4 and 5, and telson; (E) antennula; (F) antenna
FIG. 3. — Navicordulia pascali n in The genus Navicordulia Machado & Costa, 1995 (Insecta, Odonata, Corduliidae s.str.): new species, identification key for males and data on ecology and distribution
FIG. 3. — Navicordulia pascali n. sp., holotype: A, S10 and anal appendages in dorsal view; B, part of S9, S10 and anal appendages in left lateral view. Scale bars: 1 mm.
FIG. 1. — Navicordulia pascali n in The genus Navicordulia Machado & Costa, 1995 (Insecta, Odonata, Corduliidae s.str.): new species, identification key for males and data on ecology and distribution
FIG. 1. — Navicordulia pascali n. sp., holotype: A, general habitus; B, head in dorsal view and part of thorax in right lateral view.Scale bars: A, 10 mm; B, 1 mm.
FIG. 6 in The genus Navicordulia Machado & Costa, 1995 (Insecta, Odonata, Corduliidae s.str.): new species, identification key for males and data on ecology and distribution
FIG. 6. — "Savane-roche" in the Barruol Mounts, locus typicus of Navicordulia pascali n. sp. Photo by Stéphane Brûlé.
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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
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
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