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8,729 results for “Ranges”
Soil Particle Size Analysis at Permanent Quadrat locations, Jornada Experimental Range, 2001-2020
This completed dataset, from samples collected in 2001 and 2020, contains soil particle size analysis (PSA) and sand fractionation data from soil cores collected at 117 quadrat locations that are part of the Jornada Experimental Range's long-term Permanent Quadrats study. The goal of this effort was to help characterize plant-scale factors related to vegetation dynamics observed in the Permanent Quadrats. At each quadrat location, 4 cores were collected at 2 depths (0-5cm and 5-20cm) and assessed for percent sand, silt and clay. The sand fraction, if large enough, was then separated into 5 sand size classes (53-106 micrometers, 106-250 micrometers, 250-500 micrometers, 500-1000 micrometers, 1000-2000 micrometers) to measure the percent fraction of each. Long term vegetation data from this study are available in data packages knb-lter-jrn.210351001 and knb-lter-jrn.210351002.
Vegetation cover from line intercept transects in lagomorph exclosure and shrub removal plots at the Jornada Experimental Range, southern New Mexico, USA, 1938-2001
This package contains data from a study to quantify vegetation dynamics in response to lagomorph and shrub exclusion on the Jornada Experimental Range from 1938-2001. Data consist of vertical line intercept measures of the perennial grasses, suffretescents and shrubs. Sixteen plots at each of 3 sites (Gravelly Ridges, Dona Ana exclosure, and Parker Tank) were established in 1938-39. Plots were 21.3 x 21.3 m with a 7.6 m buffer zone between each. Plots were divided into east and west halves and 14 randomly located 10.65 m transects were located in each half plot. Vegetation was measured using vertical line intercepts in 1938, 1947, 1956, 1960, 1967, 1989, 1995, and 2001 for the Gravelly Ridges site, and in 1938/9, 1947, 1960, 1967, and 2001 for the Parker Tank and Dona Ana sites. The treatments include lagomorph exclusion (using wire fencing), shrub removal (hand grubbing at the ground surface), furrowing (shallow, hand raked furrows to trap surface water), and seeding (broadcast applications of seeds of native perennials). Seeding and furrowing treatments were only applied in 1939. Lagomorph exclusion has persisted since establishment, and shrub removal treatments have been reapplied immediately following all years of vegetation sampling. The dataset contains information on the site, year of data collection, plot number, line number, vegetation, and number of vegetation present on each line. This study is complete. For more information, refer to: Havstad, K.M., R.P. Gibbens, C.A. Knorr, and L.W. Murray. 1999. Long-term influences of shrub removal and lagomorph exclusion on Chihuahuan Desert vegetation dynamics. Journal of Arid Environments 42: 155-166. https://doi.org/10.1006/jare.1999.0516
Daily precipitation from a network of weighing rain gauges on the Jornada Experimental Range (Jornada Basin LTER), 1976-2011.
This completed dataset contains daily precipitation measurements from a network of weighing rain gauges (Belfort Universal Precipitation Gauges, Series 5-780) at 58 locations on the Jornada Experimental Range in Dona Ana County, New Mexico, USA between January 1976 and December 2011. Locations and the dates during which data were collected were generally project-oriented. Temporal coverage per location is quite variable and ranges between 1,647 and 13,024 days. The network was maintained by USDA Agricultural Research Service personnel. After 2011 the remaining weighing rain gauges were replaced by tipping bucket gauges and those data are available separately.
Perennial grass recovery following livestock overgazing and shrub removal: an experiment at the Jornada Experimental Range (Jornada Basin LTER), 1996-2016
The objective of this ongoing study is to determine the effect of cattle grazing and shrub removal on the decline and recovery of perennial grasses in a mesquite-invaded black grama grassland on sandy soils in the northern Chihuahuan Desert. The experiment was implemented as a randomized complete block with 3 levels of grazing (summer, winter, and control) and 2 levels of shrub treatment (shrub removal and control) in each of 3 replicate blocks. The 18 experimental units are 0.5 ha (70 x 70 m) exclosures constructed in a mesquite-invaded black grama grassland in the southwest portion of the Jornada Experimental Range in Dona Ana County, New Mexico, USA. Vegetation sampling was conducted with the line-point intercept method. Initial pre-treatment sampling occurred in 1996. Grazing treatments removed 65-80% of aboveground perennial grass biomass over 24-36 hour periods in each of four years from summer 1996 to winter 2000; shrub removal occurred during this time as well. No livestock grazing or shrub removal have occurred since 2000. Post-treatment sampling occurred in 2002, 2009, and 2016.
Jornada Basin and Experimental Range Mesquite Herbicide Project (JERHM) Connectivity Modifier Data, 2023
This dataset includes plant community composition, plant litter, soil depth, and shrub interspace fetch distance data collected in 2023 as part of the Jornada Experimental Range Herbicide Mesquite Project (JERHM). Data were collected to characterize plant community and ecosystem resource (plant litter, soil depth) responses to the use of Connectivity Modifiers (ConMods), which are used to reduce bare ground connectivity, alongside herbicide application to reduce honey mesquite (Neltuma glandulosa [=Prosopis glandulosa]) encroachment. ConMod and control (rebar-only) arrays were installed on 16 paired, 5-hectare plots, with one plot within each pair randomly selected to receive herbicide treatment in 2021 to reduce N. glandulosa abundance, or left untreated for comparison. Approximately 6 months after herbicide application (spring 2022), 12-unit ConMod and control (rebar-only) arrays were installed on experimental plots within 8 randomly selected N. glandulosa shrub interspaces (n = 8 arrays per plot, 4 per array type). Data were collected in the fall of 2023 at the end of the second growing season following array installation. There are no immediate plans to continue data collection.
Atmospheric deposition across a Colorado Front Range elevation transect, monthly, 2017-2018
In this dataset, we present seasonal dust fluxes and composition from a Colorado Front Range elevation transect of nine sites extending from the developed plains to the alpine wilderness. From the beginning of November 2017 through the end of November 2018, we collected monthly bulk deposition samples and analyzed them for dust mass fluxes, particulate matter chemistry, and liquid fraction chemistry. Niwot Ridge sites were in operation from June 2018 through September 2018 and are a critical component of this collaboration with the Boulder Creek Critical Zone Observatory, which funded the lower elevation sites. These dust deposition data address open questions about the spatial and temporal variability of dust fluxes and composition across complex mountainous terrain.
FIG. 4 in A zooarchaeological study of Rangifer tarandus (Linnaeus, 1758) from the Croxton site in Brooks Range, Alaska, and implications for utility analysis
FIG. 4. — Split caribou (Rangifer tarandus (Linnaeus, 1758)) right metatarsal with impacts on opposing surfaces. After being split and discarded, the bone
FIG. 1 in A zooarchaeological study of Rangifer tarandus (Linnaeus, 1758) from the Croxton site in Brooks Range, Alaska, and implications for utility analysis
FIG. 1. — Map showing the locations of the Croxton archaeological site and the modern village of Anaktuvuk Pass along the north slope of the Brooks Mountain Range, Alaska, United States.
Figure 3 in A new species of Phyllium (Phyllium) Illiger (Phasmida: Phylliidae) from Yap Island, Micronesia, representing a range expansion for the family
Figure 3. Holotype of Phyllium (Phyllium) yapicum new species. A) Genitalia, ventral view. B) Antennae and anterior half of head. C) Left profemora.
Fig. 8 in Re-description and range extension of the Afrotropical mayfly Cloeon perkinsi (Ephemeroptera, Baetidae)
Fig. 8. Cloeon perkinsi, ♀ abdominal terga II–V. Arrows presenting two different methods of counting the lines. Left: counting only the dark stripes (three stripes in total). Right: counting dark and bright stripes, including darker borders of stripes (seven dark lines in total).
Fig. 4 in Re-description and range extension of the Afrotropical mayfly Cloeon perkinsi (Ephemeroptera, Baetidae)
Fig. 4. Cloeon perkinsi, nymph. Habitus. Specimen collected in Hula swamp, Israel. Scale bar = 5 mm.
FIG. 3. — Myiomystax trilineata n. gen., n in Descriptions of two new genera of Maruinini (Diptera, Psychodidae, Psychodinae) from the Mitaraka range of French Guiana
FIG. 3. — Myiomystax trilineata n. gen., n. sp.: A, wing; B, male head, frontal view; C, male epandrium, proctiger and epandrial claspers, dorsal view; D, male terminalia, epandrium removed, dorsal view. Abbreviations: see Material and methods. Scale bars: A, 0.5 mm; B, 0.25 mm; C-D, 0.1 mm.
FIG. 1. — Polletomyia subulata n. gen., n in Descriptions of two new genera of Maruinini (Diptera, Psychodidae, Psychodinae) from the Mitaraka range of French Guiana
FIG. 1. — Polletomyia subulata n. gen., n. sp.: A, male head, frontal view; B, wing; C, male antennal flagellomeres 3-4, dorsal view; D, male antennal flagellomeres 12-14, dorsal view; E, male terminalia, epandrium removed, dorsal view; F, male terminalia, epandrium removed, aedeagal structure expanded, dorsal view; G, male terminalia, epandrium removed, aedeagal structure partly expanded, ventral view. Abbreviations: see Material and methods. Scale bars: A, 0.25 mm; B, 0.5 mm; C-G, 0.1 mm.
Data for an unusually dense population of Sphodros rufipes (Latreille 1829) (Mygalomorphae, Atypidae) at the edge of its range on Tuckernuck Island, Massachusetts
<p>Data submitted in fulfillment of a 2008 Nantucket Biodiversity Initiative grant.</p> <p>Paper Abstract: We counted and measured <em>Sphodros rufipes</em> (Latreille 1829) pursewebs in two survey plots on Tuckernuck Island, Massachusetts. Tuckernuck is 50 Km south of Cape Cod, Massachusetts, and is entirely owned by private landowners or conservation organizations; biological research activities are supported and encouraged by residents on a limited basis. Our objectives were to quantify web density and determine the main components of the <em>S. rufipes</em> diet. We counted 479 webs in the two plots and report web densities between 0.058 and 0.18 webs/m<sup>2</sup>; denser than previously reported populations. Contrary to most previously published literature on <em>S. rufipes,</em> we noted the predominance of the grass-like sedge, <em>Carex pensylvanica,</em> rather than trees, as a web support. However, we also offer the first report of <em>S. rufipes </em>using a conifer (<em>Pinus rigida</em>) as a web support. Coleopterans and isopods made up 79 percent of the prey parts collected from 56 pursewebs. We suggest that the Tuckernuck population offers an opportunity to collect important long-term demographic data.</p> <p>Datasets:<br> sphodrosWebLocations.csv - data from two specific areas<br> sphodrosSpiderMeasurements.csv - measurements of live spiders borrowed from their webs<br> sphodrosRandomWebLocations.csv - data for webs found by happenstance<br> sphodrosDiet.csv - diet data from body parts collected from Sphodros webs<br> sphodrosDataDictionary.csv</p>
Figure 9 in New microhylid Frogs from the Muller Range, Papua New Guinea
Figure 9. Detail of the middle three notes of call "D" of Oreophryne anamiatoi sp. n. (BPBM 33774). A Waveform, B power spectrum, and C spectrogram. Note the pulsing of the notes.
Figure 6. A in New microhylid Frogs from the Muller Range, Papua New Guinea
Figure 6. A Waveforms of the first four notes of the call of Cophixalus caverniphilus sp. n. Call "J" of BPBM 33747 B Call "D" produced by BPBM 33748. See Table 4 for details.
Figure 5. A Waveform, B in New microhylid Frogs from the Muller Range, Papua New Guinea
Figure 5. A Waveform, B power spectrum, and C spectrogram of the complete call of call "H" (Table 4) of Cophixalus caverniphilus sp. n. (BPBM 33748) recorded from a cave at Mt. Paramo, Muller Range, 1720 m, Southern Highlands Province, Papua New Guinea at 0830 h, 5 April 2009. Air (cave) temperature 17.6 °C.
Figure 4 in New microhylid Frogs from the Muller Range, Papua New Guinea
Figure 4. Map showing known distribution of three new species of microhylid frogs from along the eastern slope of Mt. Itukua, Muller Range, Southern Highlands Province, Papua New Guinea (star).
Figure 2. A Waveform, B in New microhylid Frogs from the Muller Range, Papua New Guinea
Figure 2. A Waveform, B power spectrum, and C spectrogram of call "T" of Albericus murritus sp. n. (BPBM 33641) recorded on E slope Mt. Itukua, Muller Range, Southern Highlands Province, Papua New Guinea on 27 March 2009 at 2020 h. Air temperature 14.7 °C.
Influence of Paleolithic Range Contraction, Admixture and Long-Distance Dispersal on Genetic Gradients of Modern Humans in Asia
<p>Each folder is identified according to the scenario, and contains another folder with the input files (files *.txt, *.par, *.sam, *.asc) to simulate it, the corresponding simulated genetic data (files *.arp) and the derived PC maps (files *.png). A file with the locations of the samples is also included (coord.txt).</p> <p>* Pure Paleolithic expansion * <br> The folder “Paleo” contains the input files (INFILES), the genetic data and the corresponding PC maps simulated under the scenario of a pure Paleolithic expansion, ignoring the range contraction induced by the LGM and LDD events.</p> <p>* Pure Paleolithic expansion considering the range contraction induced by the LGM * <br> The folder “Paleo_REC” contains the input files (INFILES), the genetic data and the corresponding PC maps simulated under the scenario of a pure Paleolithic expansion suffering the range contraction induced by the LGM.</p> <p> * Pure Paleolithic expansion considering long-distance dispersal (LDD) events * <br> The folder “Paleo_LDD” contains the input files (INFILES), the genetic data and the corresponding PC maps simulated under the scenario of a pure Paleolithic expansion considering LDD events. </p> <p>* Paleolithic expansion followed by two Neolithic expansions (IR=0) from Middle East and East Asia considering the range contraction induced by the LGM * <br> The folder “Paleo2NeoIR0_REC” contains the input files (INFILES), the genetic data and the corresponding PC maps simulated under the scenario of a Paleolithic expansion followed by two Neolithic expansions (IR=0) from Middle East and later from East Asia suffering the range contraction induced by the LGM. </p> <p>* Paleolithic expansion followed by two Neolithic expansions (IR=0) from Middle East and East Asia considering LDD events * <br> The folder “Paleo2NeoIR0_LDD” contains the input files (INFILES), the genetic data and the corresponding PC maps simulated under the scenario of a Paleolithic expansion followed by two Neolithic expansions from Middle East and later from East Asia considering LDD events. </p> <p>* Paleolithic expansion followed by a single Neolithic expansion (IR=0) from Middle East considering the range contraction induced by the LGM * <br> The folder “Paleo_MiddleEastNeoIR0_REC” contains the input files (INFILES), the genetic data and the corresponding PC maps simulated under the scenario of a Paleolithic expansion followed by a single Neolithic expansions (IR=0) from Middle East suffering the range contraction induced by the LGM. </p> <p>* Paleolithic expansion followed by a single Neolithic expansion (IR=0) from East Asia considering the range contraction induced by the LGM * <br> The folder “Paleo_EastAsiaNeoIR0_REC” contains the input files (INFILES) and the corresponding PC maps simulated under the scenario of a Paleolithic expansion followed by a single Neolithic expansion (IR=0) from East Asia suffering the range contraction induced by the LGM. </p> <p>* Paleolithic expansion followed by a single Neolithic expansion (IR=0) from Middle East considering LDD events * <br> The folder “Paleo_MiddleEastNeoIR0_REC” contains the input files (INFILES), the genetic data and the corresponding PC maps simulated under the scenario of a Paleolithic expansion followed by a single Neolithic expansions (IR=0) from Middle East considering LDD events. </p> <p>* Paleolithic expansion followed by a single Neolithic expansion (IR=0) from East Asia considering LDD events * <br> The folder “Paleo_EastAsiaNeoIR0_REC” contains the input files (INFILES) the genetic data and the corresponding PC maps simulated under the scenario of a Paleolithic expansion followed by a single Neolithic expansion (IR=0) from East Asia considering LDD events. </p> <p>* Paleolithic expansion followed by a single Neolithic expansion (IR=0.04) from Middle East considering the range contraction induced by the LGM * <br> The folder “Paleo_MiddleEastNeoIR004_REC” contains the input files (INFILES), the genetic data and the corresponding PC maps simulated under the scenario of a Paleolithic expansion followed by a single Neolithic expansion (IR=0.04) from East Asia suffering the range contraction induced by the LGM. </p> <p>* Paleolithic expansion followed by a single Neolithic expansion (IR=0.04) from East Asia considering the range contraction induced by the LGM * <br> The folder “Paleo_EastAsiaNeoIR0_REC” contains the input files (INFILES), the genetic data and the corresponding PC maps simulated under the scenario of a Paleolithic expansion followed by a single Neolithic expansions (IR=0.04) from East Asia suffering the range contraction induced by the LGM. </p> <p>* Paleolithic expansion followed by a single Neolithic expansion (IR=0.04) from Middle East considering LDD events * <br> The folder “Paleo_MiddleEastNeoIR004_REC” contains the input files (INFILES), the genetic data and the corresponding PC maps simulated under the scenario of a Paleolithic expansion followed by a single Neolithic expansion (IR=0.04) from East Asia considering LDD events. </p> <p>* Paleolithic expansion followed by a single Neolithic expansion (IR=0.04) from East Asia considering LDD events * <br> The folder “Paleo_EastAsiaNeoIR0_REC” contains the input files (INFILES), the genetic data and the corresponding PC maps simulated under the scenario of a Paleolithic expansion followed by a single Neolithic expansions (IR=0.04) from East Asia considering LDD events.</p>
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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.