cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.15468/dl.h95twn
title: Occurrence Download

description: A dataset containing 12431 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Lepus californicus Gray, 1837"
 ]
}

 The dataset includes 12431 records from 111 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0066700-200221144449610/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.mki6ru
title: Occurrence Download

description: A dataset containing 9907225 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Corvus brachyrhynchos C.L.Brehm, 1822"
 ]
}

 The dataset includes 9907225 records from 125 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0036396-190918142434337/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.n6rbke
title: Occurrence Download

description: A dataset containing 13626 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((-114.8 25.8,-93.5 25.8,-93.5 37,-114.8 37,-114.8 25.8))",
 "HasCoordinate is true",
 "TaxonKey is Meloidae",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 13626 records from 25 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0077081-200221144449610/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.fk3wzv
title: Occurrence Download

description: A dataset containing 5969 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is Lichens of Knyszyn Forest"
 ]
}

 The dataset includes 5969 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0052671-200221144449610/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.82enwc
title: Occurrence Download

description: A dataset containing 750 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "TaxonKey is Syndactyla guttulata (P.L.Sclater, 1858)"
 ]
}

 The dataset includes 750 records from 5 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0334220-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.acjzqb
title: Occurrence Download

description: A dataset containing 331038 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Elymus repens (L.) Gould"
 ]
}

 The dataset includes 331038 records from 641 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0025704-180131172636756/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15486/ngt/1411971
title: Leaf sample detail, Feb2016-May2016, PA-SLZ, PA-PNM, PA-BCI: Panama

description: This data package contains details of the date, location, species and photographs of leaf samples collected on a monthly basis from Feb to May 2016 from Parque Natural Metropolitano (PA-PNM), Barro Colorado Island (PA-BCI) and Bosque Protector San Lorenzo (PA-SLZ) in Panama. Data from BCI only available for March. This data was collected as part of the 2016 El Niño-Southern Oscillation (ENSO) campaign. Included in this data package are an Excel file with data (2016ENSO_Panama_LeafSamples) and two Excel files with associated metadata. Sample photos are included in five zip files, organized by month and site. Also included is a Word document (Metadata_description_2016_ENSO_Panama) with details such as data collection methods, equipment used, and site information. Data to be used as a reference to linking related datasets including leaf water potential, leaf spectra, LMA, gas exchange and leaf chemistry (CHN, NSC). Most leaves were sampled from sunlit canopy trees. VERSION 2 update. The identification of a species from the PNM site has been corrected as follows: the identification of the tree initially identified as Pseudosamanea guachapele (ALBIED) has been revised to Albizia adinocephala (ALBIAD). The updated data package includes revised data, metadata and protocol documents updated to reflect this change.
DOI: 10.5065/d66d5r38
title: Happy Valley Permanent Vegetation Plots, Version 1.0

description: This dataset contains Happy Valley Permanent Vegetation Plots data, including environmental, soil, and vegetation information collected from 55 releve plots at the Happy Valley research site along the Sagavanirktok River in northern Alaska. To complement formal releve sampling of vegetation during the period July 18-27, 1994, the investigators described each study site (including site topography, surficial geology, estimated snow duration, soil moisture, thaw depth, and signs of disturbance, among other parameters) and collected soil samples adjacent to the releve plots for laboratory analyses. Soil analyses include measurements of soil chemistry, pH, organic matter content, and texture (percentages of sand, silt, and clay). Ordination analysis displays releve data in two-dimensional space according to species similarity. Results from ordination reveal that three environmental variables -- stability, exposure, and soil moisture -- significantly affect vegetation composition.
DOI: 10.5065/d6b27sfq
title: Hillshade Rasters for Digital Elevation Models, 2002-2010, Version 1.0

description: Aerial stereophotography missions were flown at least once every year over the Columbia Glacier in 1976-2010, and documented further in the Aerial Inventory. Flight data include all existing scans of the large format diapositives and their derived data products from 2002-2010. This dataset includes hillshade rasters for all digital elevation models (DEMs) from 2002 through 2010. Data are in one TAR file.
DOI: 10.15486/ngt/1411972
title: Diurnal leaf gas exchange survey, Feb2016-May2016, PA-SLZ, PA-PNM: Panama

description: This data package contains the results of a diurnal leaf gas exchange survey measured on sunlit canopy trees within the NGEE Tropics sites Parque Natural Metropolitano (PA-PNM) and Bosque Protector San Lorenzo (PA-SLZ) in Panama. Measurements were taken on a monthly basis from February to May of 2016. This data was collected as part of the 2016 El Niño-Southern Oscillation (ENSO) campaign. Included in this data package are two Excel files with data (2016ENSO_Panama_DiurnalGasEx, 2016ENSO_Panama_AreaCorrections) and additional Excel files with associated metadata. Also included is a Word document (Metadata_description_2016_ENSO_Panama) with details such as data collection methods, equipment used, and site information. See related datasets for further sample details, leaf water potential, LMA, leaf spectra, other gas exchange and leaf chemistry. VERSION 2 update. The identification of a species from the PNM site has been corrected as follows: the identification of the tree initially identified as Pseudosamanea guachapele (ALBIED) has been revised to Albizia adinocephala (ALBIAD). The updated data package includes revised data, metadata and protocol documents updated to reflect this change.
DOI: 10.5065/d6ft8j54
title: Ecosystem Carbon Fluxes, Toolik Lake, Alaska, 1995 and 1996, Version 1.0

description: Carbon dioxide exchange, air temperature, and photosynthetically active radiation (PAR) were measured on tundra plots at the Toolik Lake Field Station during the summers of 1995 and 1996. Measurements were made on control plots, plots from which snow was removed, and plots from which snow was removed before the installation of heating cables at 10 cm depth. Plots with heating cables were heated two hours per day. Carbon dioxide exchange measurements utilized a Li-Cor 6200 portable gas exchange system, and a Li-Cor quantum sensor was used to measure PAR. Data are available in ASCII and MS Excel formats.
DOI: 10.5065/d65t3hkq
title: Lake Sediment Thermal Properties for Emaiksoun Lake, Version 1.0

description: Lake sediment thermal property measurements were made on Emaiksoun Lake (also known as "Freshwater Lake"). This lake is located on the south end of town in Barrow, Alaska. The measurements were made using a KD-2 Pro Thermal Properties Analyzer. Parameters measured include: 1) thermal conductivity, 2) thermal resistivity, 3)specific heat, 4) thermal diffusivity, 5) r-squared (goodness of fit), and 6) sediment temperature. Measurements in water depths of 0.5 and 1.0 meter were made by a person standing in the water, using a PVC extension rod. A boat was used to reach lake sediments in water depths of 1.5 meters or greater. Slight boat movements during the time of measurement had an impact on data accuracy, although any data points that were obviously unreliable were thrown out and are not included in this dataset. All data that have been saved have r-squared values of at least 0.96. Measurement time by the KD-2 Pro typically takes a few minutes.
DOI: 10.5065/d6kk98wf
title: Landsat Derived Historical Lake Extents for the Barrow Peninsula, Version 1.0

description: This data set consists of Lake extent maps for the Barrow peninsula from five historical Landsat satellite images classified by a hierarchical classification system. Normalized Difference Water Index (NDWI) was calculated from the green and near infra-red bands and each lake was classified by an independently derived NDWI threshold value. The acquisition dates for the images were 13 July 1977; 5 August 1985; 8 July 1992; 1 July 2001; and 20 August 2008.
DOI: 10.15486/ngt/1411973
title: Leaf mass area, Feb2016-May2016, PA-SLZ, PA-PNM, PA-BCI: Panama

description: This data package contains leaf mass data per unit area measured on a monthly basis from February to April, 2016, at the Bosque Protector San Lorenzo (PA-SLZ) and Parque Natural Metropolitano (PA-PNM) sites in Panama. Data from the Barro Colorado Island (PA-BCI) site are only available for March. This data was collected as part of the 2016 El Niño-Southern Oscillation (ENSO) campaign. Included in this data package are an Excel file with data (2016ENSO_Panama_LMA1) and two Excel files with associated metadata. Also included is a Word document (Metadata_description_2016_ENSO_Panama) with details such as data collection methods, equipment used, and site information. See related datasets for further sample details, leaf water potential, leaf spectra, gas exchange and leaf chemistry. VERSION 2 update. The identification of a species from the PNM site has been corrected as follows: the identification of the tree initially identified as Pseudosamanea guachapele (ALBIED) has been revised to Albizia adinocephala (ALBIAD). The updated data package includes revised data, metadata and protocol documents updated to reflect this change.
DOI: 10.5065/d6zw1j2g
title: Modeled Carbon Responses of Tundra Ecosystems to Historical and Projected Climate, Version 1.0

description: This data set contains the model output data of Terrestrial Ecosystem Model (TEM) simulations from 1920-2100 for both moist tundra and polar desert/alpine tundra for the Pan-arctic, compared to output for the Kuparuk River Basin (moist tundra). TEM simulates C and N fluxes and pools. 5,942 grid cells were used in the Pan-arctic simulation, of which 3,614 were considered polar desert/alpine tundra and 2,328 were considered moist tundra. All 19 grid cells in the Kuparuk simulation were considered moist tundra. The values of several ecosystem variables are compared between the Pan-arctic and Kuparuk. The results of this study are presented and discussed in McGuire et al. (2000), Modeling carbon responses of tundra ecosystems to historical and projected climate: sensitivity of Pan-arctic carbon storage to temporal and spatial variation in climate. Global Change Biology 6: 141-159. The simulations use the moist tundra and polar desert/alpine tundra calibrations developed by McGuire et al. (1992), based on data from Toolik Lake, Alaska.
DOI: 10.15486/ngt/1414275
title: Seven years (2008-2014) of meteorological observations plus a synthetic El Nino drought for BCI Panama.

description: This dataset is a derivative product of raw meteorological data collected at Barro Colorado Island, Panama (see acknowledgements below). This dataset contains the following: 1) a seven-year record (2008-2014) of meteorological observations from BCI that is in a comma delimited text format, 2) an R-script that converts the observed meteorology into an hdf5 format that can be read by the ED2 model, 3) two decades of meteorological drivers in hdf5 format that are based on the 7-year record of observations and include a synthetic 2-yr El Nino drought, 4) a ReadMe.txt file that explains how the data in the hdf5 meteorological drivers correspond to the observations. The raw meteorological data were further QC'd as part of the NGEE-Tropics project to derive item 1 above. The R-script makes the appropriate unit conversions for all observed meteorological variables to be compatible with the ED2 model. The R-script also converts RH into specific humidity, splits total shortwave radiation into its 4-stream parts, and calculates longwave radiation from air temperature and RH. The synthetic El Nino drought is based on selected months from the observed meteorology where in each, precipitation (only) of the selected months was modified to reflect the precipitation patterns of the 1982/83 El Nino observed at BCI.
DOI: 10.5065/d63n21h9
title: Circulation in the Freshwater Switchyard of the Arctic Ocean: University of Washington CTD Profile Data, Version 1.0

description: The Freshwater Switchyard of the Arctic Ocean (FSAO) project is a program to study freshwater circulation (sea ice and upper ocean) in the "freshwater switchyard" between Alert (Ellesmere Island) and the North Pole, through a series of annual springtime hydrographic surveys. An aircraft based at Alert on northern Ellesmere Island carries out the oceanographic surveys northward across the shelf break in late spring. These surveys are intended to measure the eastward-flowing boundary current and determine water property changes that occur in the transition from the deep Arctic Ocean basin to the shallow continental shelf. Measurements were made to 500m in late April and May of 2003-2009 using a Seabird Sea-Bird Electronics (SBE) 19plus SeaCAT internally recording CTD instrument with an Sea-Bird Electronics (SBE) 43 dissolved oxygen sensor. Data include depth, pressure, temperature in situ, potential temperature, conductivity, salinity, density and, if available, dissolved oxygen. In recent years, we have begun offering dissolved oxygen profiles in a separate archive to allow a different processing pathway. The basic CTD archives are preferred for all purposes that do not require oxygen. Through 2007, the aircraft was a Bell 206 helicopter. In April-May 2007, the worst Arctic flying weather in many years was encountered, negatively impacting many investigations. At Alert, a very wide shore lead evaporating ice fog never relented long enough to allow the helicopter to safely reach the study areas, so no data is included for 2007. In 2008, we used a Twin Otter skiplane to obtain many stations, at a cost of not being able to reach precise station positions from previous years. The 2009 data used primary Sea-Bird Electronics (SBE)-19 plus CTD (s/n 4344) was an Sea-Bird Electronics (SBE)-43 Dissolved Oxygen Sensor (s/n 408). Beginning with Cast 8, backup Sea-Bird Electronics (SBE)-19 (s/n 2373) with Sea-Bird Electronics (SBE)-43 (s/n 1406) was substituted, and that station recorded an excellent profile of oxygen as well as temperature and conductivity. The backup CTD itself failed completely at the first station the following day, for reasons under investigation by the manufacturer. At that point it was felt the safest course was to complete the survey removing the Sea-Bird Electronics (SBE)-43 from the primary CTD, to optimize our chances of collecting good CTD data. The result is 18 stations of quality CTD profiles, but only one (Cast 8) with oxygen. In 2010, Airborne Expendable CTD Probes were dropped into open leads from the Twin to record an ocean section across the north end of Nares Strait.
DOI: 10.5065/d67942t9
title: Controls on Carbon Flux in Moist Acidic Versus Nonacidic Tundra, Arctic LTER Data, Version 1.0

description: This dataset contains Controls on Carbon Flux in Moist Acidic Versus Nonacidic Tundra, Arctic Long Term Ecological Research Program (LTER) Data. In an effort to understand soil effects on carbon flux from moist acidic tundra versus moist non-acidic tundra, the investigators collected soil respiration, soil temperature, soil moisture, thaw depth, soil cation, leaf area, leaf nutrient, and litter nutrient data from Long Term Ecological Research (Long Term Ecological Research Program (LTER)) sites in northern Alaska. National Science Foundation awards OPP-9902695 and OPP-9902721 supported this research.
DOI: 10.15486/ngt/1419494
title: El Verde Ridge, El Verde Valley, and Rio Icacos root phosphatase and bacterial community composition (December 2015)

description: Raw data of resin P values, root phosphatase, bacterial community 16S rRNA gene sequences, and bacterial isolate phosphatase and P solubilization in Rio Icacos, El Verde Ridge and El Verde Valley. Contact cabugaokm@ornl.gov if you need to use this dataset for additional information.
DOI: 10.5065/d6c24tjn
title: Barrow Area Remote Sensing- BE CO2 Flux Summer 2009, Version 1.0

description: This data set contains half-hourly vertical fluxes of CO2 and related environmental measurements taken at the Biocomplexity Experimental Site in northern Alaska during the summer of 2009. Sampling was conducted as part of a large-scale water manipulation experiment to test the effect of altered tundra moisture on ecosystem carbon exchange. The variables measured were: CO2 flux H2O flux, latent and sensible heat fluxes, turbulence characteristics, radiation, meteorological variables, ground heat flux (5 replicates), and soil temperature (1 cm depth). Sample date and time are also given.
DOI: 10.15486/ngt/1419953
title: Hurricane Maria Puerto Rico Landsat Analysis

description: Hurricane Maria made landfall as a strong Category 4 storm in southeast Puerto Rico on September 20th, 2018. The powerful storm traversed the island in a northwesterly direction causing widespread destruction. This study focused on a rapid assessment of Hurricane Marias impact to Puerto Ricos forests. Calibrated and corrected Landsat 8 image composites for the entire island were generated using Google Earth Engine for a comparable pre-Maria and post-Maria time period that accounted for phenology. Spectral mixture analysis (SMA) using image-derived end members was carried out on both composites to calculate the change in the non-photosynthetic vegetation (Delta-NPV) spectral response, a metric that quantifies the increased fraction of exposed wood and surface litter associated with tree mortality and crown damage from the storm. Hurricane simulations were also conducted using the Weather Research and Forecasting (WRF) regional climate model to estimate wind speeds associated with forest disturbance. Dramatic changes in forest structure across the entire island were evident from pre- and post-Maria composited Landsat 8 images. A Delta-NPV map for only the forested pixels illustrated significant spatial variability in disturbance, with patterns that associated with factors such as slope, aspect and elevation. An initial order-of-magnitude impact estimate based on previous work indicated that Hurricane Maria may have caused mortality and severe damage to 23-31 million trees. Additional field work and image analyses are required to further detail the impact of Hurricane Maria to Puerto Rico forests. A minor update to this dataset was posted on April 20, 2018. The previous version is being retired. If you need access to the prior version of the data, email ngee-tropics-archive@lbl.gov.
DOI: 10.5065/d6mk6b17
title: At-sea density of foraging little auks (Alle alle) near Hornsund Fjord, Version 1.0

description: This dataset includes the at-sea density of foraging little auks near Hornsund Fjord, Southwest Spitsbergen. Data were collected during 1-3 day cruises aboard the R/V Oceania during the little auk breeding season (July) in 2001 and in July 2005-2008. Data are included in a single Excel file.
DOI: 10.5065/d6w37tgw
title: Aerial Photographs from Columbia Glacier, 1976-2010, Version 1.0

description: Aerial stereophotography missions were flown at least once every year over the Columbia Glacier in 1976-2010, and documented further in the Aerial Inventory. Flight data include all existing scans of the large format diapositives and their derived data products from 2002-2010. This dataset consists of scanned aerial diapositives in high resolution from a photogrammetric scanner and low resolution JPEG previews. The data are collected into TAR files by year. Data gathered during 2002-2003 are collected into TAR files by day and part (e.g., 20020826_01.tar).
DOI: 10.15486/ngt/1419956
title: FRAMES Metadata Reporting Templates for Ecohydrological Observations, version 1.1

description: FRAMES is a a set of Excel metadata files and package-level descriptive metadata that are designed to facilitate and improve capture of desired metadata for ecohydrological observations. The metadata are bundled with data files into a data package and submitted to a data repository (e.g. the NGEE Tropics Data Repository) via a web form. FRAMES standardizes reporting of diverse ecohydrological and biogeochemical data for synthesis across a range of spatiotemporal scales and incorporates many best data science practices. This version of FRAMES supports observations for primarily automated measurements collected by permanently located sensors, including sap flow (tree water use), leaf surface temperature, soil water content, dendrometry (stem diameter growth increment), and solar radiation. Version 1.1 extend the controlled vocabulary and incorporates functionality to facilitate programmatic use of data and FRAMES metadata (R code available at NGEE Tropics Data Repository).
DOI: 10.5065/d60v89xd
title: Polar Bears: Morphological measurements and body condition at capture, Version 1.0

description: This dataset contains measurements of individual polar bears using rope, calipers and measuring tape. Weight was determined using a tripod hoist. A visual assessment of body condition was also recorded on a scale of 1-5. Information on bear IDs and dates of capture is not available because of the threatened species status of the subjects.
DOI: 10.15468/dl.9u8dem
title: Occurrence Download

description: A dataset containing 281 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Madagascar",
 "DatasetKey is Museum of Comparative Zoology, Harvard University",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Primates"
 ]
}

 The dataset includes 281 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0289467-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.uw3awg
title: Occurrence Download

description: A dataset containing 4 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Britha inambitiosa Leech, 1990",
 "HasCoordinate is true",
 "Country is Japan",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 4 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0203589-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.