cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.48443/rfxv-jg44
title: Riparian vegetation % cover (DP1.20191.001)
title: RELEASE-2023

description: This data product contains the quality-controlled, native sampling resolution data from the stream canopy cover component of NEON's riparian habitat assessment protocol. Using a modified convex densiometer, 1/3 (17 points) of the view field is used to measure the riparian canopy cover at wadeable stream sites. For additional details, see the user guide, protocols, and science design listed in the Documentation section in this data product's details webpage.

Latency:
The expected time from data and/or sample collection in the field to data publication is as follows, for each of the data tables (in days) in the downloaded data package. See the Data Product User Guide for more information.

rip_percentComposition:  30
description: Each aquatic site is surveyed once per year within the site-specific peak greenness window. As part of the survey percent riparian cover is collected at wadeable stream and river sites, but not collected at lake sites. Protocols are based on the U.S. EPA's Statewide Riparian Mapping protocol.
Ten riparian transects are evenly distributed throughout the 1km wadeable stream  sampling reach.  At wadeable stream sites, at each transect, riparian canopy percent cover measurements are taken at 3 points along each transect: the wetted center of the stream, 0.3m from the wettted edge of the left bank, and 0.3 m from wetted edge of the right bank.  At the center stream sampling point, 4 densiometer readings are taken facing upstream, downstream, river right, and river left; at the left and right banks a single densiometer reading is taken, facing the bank. 
 At river sites, percent canopy cover is collected at 1 point located about 0.3m from the wetted river edge at five of ten paired plots.  The plot nearest the river thalweg is selected and the following measurements are collected from the boat at 0.3m above the water:  upstream, downstream, river right, and river left. Instrumentation:
DOI: 10.48443/s8ca-bw29
title: Salt-based stream discharge (DP1.20193.001)
title: RELEASE-2023

description: This data product contains the quality-controlled, native sampling resolution data for NEON's Salt-based Discharge data product. The data for this data product is collected as part of the wadeable stream reaeration sampling protocol. Salt concentration data from both constant rate, NaCl or NaBr, and slug, NaCl, injections at wadeable stream sites are published as part of this data product. Data users should refer to the user guide for reaeration and salt-based discharge (see `NEON_ReaerSaltBasedQ_userGuide`) for suggestions on how to calculate discharge values from the published data packages. For additional details, see the user guide, protocols, and science design listed in the Documentation section in this data product's details webpage.

Latency:
The expected time from data and/or sample collection in the field to data publication is as follows, for each of the data tables (in days) in the downloaded data package. See the Data Product User Guide for more information.

sbd_backgroundFieldCondData:  30

sbd_backgroundFieldSaltData:  30

sbd_conductivityFieldData:  30

sbd_externalLabDataSalt:  120

sbd_fieldData:  30

sbd_plateauMeasurementFieldData:  30

sbd_plateauSampleFieldData:  30

sdg_externalLabSummaryData:  14
description: Tracer injections of conservative salt are completed 6 times per year to capture a range of flows at NEON wadeable stream sites as part of the wadeable stream reaeration protocol. The first sampling station is located near sensor set #1 and the fourth sampling station is located near sensor set #2. Sampling stations #2 and #3 are approximately evenly spaced between sampling stations #1 and #4. The injection (drip) station is located far enough upstream of sampling station #1 that the tracer is well mixed within the stream channel for all sampling stations. Conductivity data loggers are located near sampling stations #1 and #4 to capture the rising limb and plateau (for constant rate injections) and falling limb (for slug injections) in situ conductivity values. For more information see AOS Protocol and Procedure: Reaeration in Streams [NEON.DOC.000693](http://data.neonscience.org/api/v0/documents/NEON.DOC.000693vH). Instrumentation: YSI Pro2030, HOBO U24
DOI: 10.48443/114c-we90
title: Sediment chemical and physical properties (DP1.20194.001)
title: RELEASE-2023

description: This data product contains the quality-controlled, native sampling resolution data from NEON's aquatic sediment collection and field metadata, as well as associated chemical data (nutrients, carbon, heavy metals) and physical properties (sediment size and texture) provided by a contracted lab. Organic contaminants were analyzed prior to 2020. In 2022, sediment began to be archived for future analysis. Sediment field samples are collected in wadeable streams, rivers, and lakes 2 times per year (spring and fall). Samples are collected from several depositional zones, homogenized, subsampled, and shipped to an external lab. For additional details, see the user guide, protocols, and science design listed in the Documentation section in this data product's details webpage.

Latency:
The expected time from data and/or sample collection in the field to data publication is as follows, for each of the data tables (in days) in the downloaded data package. See the Data Product User Guide for more information.

asc_externalLabData:  90

asc_externalLabSummary:  14

asc_fieldDataPoint:  30

asc_fieldDataStation:  30

asc_fieldDataZone:  30
description: Sediment samples are collected from 2 stations at each site: at wadeable streams and non-wadeable (large river) sites are divided in half longitudinally and sediment is collected throughout each half (approx. 500 m reach per station).  In lakes, there are also 2 stations, the first near the buoy (the deep center point in the basin, called ‘c0’ meaning ‘center’), and the second near the near-shore infrastructure (about 1-2 m deep, called ‘in’ meaning ‘in-shore’).  Within each station, sediments are collected and homogenized from depositional zones at both stations 2 times per year during the spring and fall aquatic biological sampling bouts. Homogenized aggregate samples are subsampled and shipped to an external lab for analysis, or to the NEON Biorepository for archiving. Instrumentation:
DOI: 10.48443/szkp-nr11
title: Stable isotopes in surface water (DP1.20206.001)
title: RELEASE-2023

description: This data product contains the quality-controlled, native sampling resolution data from NEON's stable isotopes in surface water sampling protocol. Filters containing suspended particulate organic matter (POM) are sent to external facilities for analysis to determine 15N/14N and 13C/12C particulate isotope ratios and particulate carbon and nitrogen masses. Water samples are sent to external facilities for analysis to determine 18O/12O and 2H/1H water isotope ratios. For additional details, see the user guide, protocols, and science design listed in the Documentation section in this data product's details webpage.
Latency:
The expected time from data and/or sample collection in the field to data publication is as follows, for each of the data tables (in days) in the downloaded data package. See the Data Product User Guide for more information.

asi_externalLabH2OIsotopes:  120

asi_externalLabPOMSummaryData:  14

asi_externalLabSummaryData:  14

asi_fieldData:  30

asi_fieldSuperParent:  30

asi_POMExternalLabDataPerSample:  180
description: The aquatic stable isotope sampling protocol is completed in conjunction with the water chemistry and dissolved gas protocol. Grab samples of surface water at NEON aquatic sites are collected in streams and rivers 15- 26 times per year and 12 times per year in lakes. In streams and rivers, 12 samples are collected at regular intervals during the sampling season, while the remaining 14 are collected on an irregular basis to capture major flow events. In lakes, samples are collected approximately monthly and to capture ice-on and ice-off events. For additional details, see the user guide, protocols, and science design listed in the Documentation section in this data product's details webpage. Instrumentation:
DOI: 10.48443/jtw2-x761
title: Temperature of groundwater (DP1.20217.001)
title: RELEASE-2023

description: Groundwater plays an important role in modulating temperature of surface water, which is critical to habitat quality and ecosystem function. NEON measures groundwater temperature at high temporal resolution.  Three to eight wells are available per aquatic site.  From NEON groundwater elevation measurements, the magnitude and direction of groundwater flow can be calculated, which will help to inform the heat flux between groundwater and surface water. This data product includes continuous quality-controlled groundwater temperature captured every 5 minutes and are reported as 5-minute instantaneous measurements and 30-minute averages.

Latency:
Data collected in any given month are published during the second full week of the following month.
description: Multiple groundwater wells per aquatic site are installed in triangular arrays where local features allow. Temperature of groundwater is measured in a site-specific array designed to capture shallow groundwater flow and exchange with the surface water feature at the site. Instrumentation: In-Situ, Inc. - Aqua TROLL 200
DOI: 10.48443/eqmn-5b37
title: Zooplankton collection (DP1.20219.001)
title: RELEASE-2023

description: This data product contains the quality-controlled, native sampling resolution data and metadata from NEON's aquatic zooplankton collection protocol, as well as associated taxonomic, morphometric, and count analyses data provided by a contracted lab. Field samples are collected in the water column of lakes using the most appropriate sampler (vertical tow net or Schindler trap) for the depth of water, preserved in ethanol in the field, and shipped to a contracting lab for analysis. For additional details, see the user guide, protocols, science design, and lab SOPs listed in the Documentation section in this data product's details webpage.

Latency:
The expected time from data and/or sample collection in the field to data publication is as follows, for each of the data tables (in days) in the downloaded data package. See the Data Product User Guide for more information.

zoo_fieldData:  30

zoo_perSample:  210

zoo_taxonomyProcessed:  210

zoo_taxonomyRaw:  210

zoo_perVial:  210
description: Zooplankton samples are collected three times per year at lake sites during aquatic biology bout windows, roughly in spring, summer, and fall. Samples are collected using either a tow net (water deeper than 4 m) or a Schindler-Patalas trap (water shallower than 4 m) depending on the depth at the sampling location. Samples are collected near the NEON profiling buoy as well as two littoral sensor sets. Samples are preserved in ethanol in the field and shipped to a taxonomy lab for sorting and identification, including count of each taxon, summary length and width measurements for each taxon per sample (to nearest mm) and identification to lowest practical taxon (genus or species). Instrumentation:
DOI: 10.48443/t300-6f64
title: Zooplankton metabarcoding (DP1.20221.001)
title: RELEASE-2023

description: This data product contains the quality-controlled, native sampling resolution data and metadata from NEON's aquatic zooplankton metabarcoding sampling protocol, as well as associated metadata provided by a contracted lab. Field samples are collected in the water column of lakes using the most appropriate sampler (vertical tow net or Schindler trap) for the depth of water at the same time and location as morphological taxonomy samples, preserved in ethanol in the field, and shipped to a contracting lab for processing and sequencing. For additional details, see the user guide, protocols, and science design listed in the Documentation section in this data product's details webpage.

Queries for this data product return a downloadable data package with laboratory methods and DNA extraction, PCR amplification, and sequencing metadata for samples from the queried sites and date range. Queries for the expanded package will also include a table containing links to the raw sequence data files.

Latency:
The expected time from data and/or sample collection in the field to data publication is as follows, for each of the data tables (in days) in the downloaded data package. See the Data Product User Guide for more information.

zoo_fieldData:  30

zoo_dnaExtraction:  240

zoo_markerGeneSequencing:  240

zoo_pcrAmplification:  240

zoo_dnaRawDataFiles:  240

zoo_metabarcodeTaxonomy:  240

inv_metabarcodeTaxonList:  240

inv_metabarcodeSummary:  240

inv_dnaExtractionStandard:  240

inv_markerGeneSequencingStandard:  240

inv_pcrAmplificationStandard:  240

inv_dnaRawDataFilesStandard:  240

inv_metabarcodeTaxonomyStandard: 240
description: Zooplankton metabarcoding samples are collected three times per year at lake sites during aquatic biology bout windows, roughly in spring, summer, and fall. Samples are collected using either a tow net (water deeper than 4 m) or a Schindler-Patalas trap (water shallower than 4 m) depending on the depth at the sampling location. Samples are collected near the NEON profiling buoy as well as the littoral sensor sets. Samples collected during the mid-summer sampling bout (Bout 2) are sent to an external facility for homogenization and high-throughput sequencing. Samples collected during the spring and fall (Bout 1 and Bout 3) are preserved in ethanol and shipped to the NEON Biorepository for archiving. Instrumentation:
DOI: 10.48443/js74-8y83
title: Secchi depth (DP1.20252.001)
title: RELEASE-2023

description: This data product contains the quality-controlled, native sampling resolution data from NEON's Secchi depth data collection. Secchi measurements indicate water clarity, and secchi depth is used to determine the depth to which light penetrates. This value can also be used to calculate the depth of the euphotic zone in a lake or river, which is especially important for phytoplankton sampling. Secchi data are collected when collecting data for any standard operating procedure that samples the water column in a lake or river (e.g., surface water chemistry and phytoplankton) by lowering a Secchi disk through the water column, and recorded the depth(s) to which it disappears from view. Secchi depth measurements are collected only during ice-free periods, and are collected a minimum of 4 times per year, up to 12+ times per year. For additional details, see the user guide, protocols, and science design listed in the Documentation section in this data product's details webpage.

Latency:
The expected time from data and/or sample collection in the field to data publication is as follows, for each of the data tables (in days) in the downloaded data package. See the Data Product User Guide for more information.

dep_secchi:  30
description: Secchi data are collected during sample collection for any standard operating procedure that samples the water column in a lake or river (phytoplankton, zooplankton, pelagic surface water microbes, and pelagic surface water chemistry), and may be collected during other sampling visits to lake and river sites. Measurements are collected only near the buoy sensors in lakes and rivers, and data are not collected under the ice. Secchi depth measurements are only collected during ice-free periods, and are collected a minimum of 4 times per year, up to 12+ times per year. Instrumentation:
DOI: 10.48443/6z4t-6f03
title: Depth profile at specific depths (DP1.20254.001)
title: RELEASE-2023

description: This data product contains the quality-controlled, native sampling resolution data from NEON's Depth profile at specific depths data collection. Depth profile data are collected along with any other sampling protocol in the water column (e.g., phytoplankton, zooplankton, or surface water chemistry). Depth profile data include water temperature, conductivity, and dissolved oxygen data collected every 0.5 m through the water column using a handheld probe. Depth profile data are only collected at the deepest location of the lake near the buoy, or near the river buoy. These data not only provide metadata to accompany the sampling modules, but also inform sampling depths based the thermocline, if present, for water chemistry and associated analytes, surface water microbes, and phytoplankton sampling. Depth profiles are collected year-round, including under ice at northern sites, a minimum of 12 times per year. For additional details, see the user guide, protocols, and science design listed in the Documentation section in this data product's details webpage.

Latency:
The expected time from data and/or sample collection in the field to data publication is as follows, for each of the data tables (in days) in the downloaded data package. See the Data Product User Guide for more information.

dep_profileData:  30

dep_profileHeader:  30
description: Depth profile data are collected during sample collection for any protocol that samples the water column in a lake or river (phytoplankton, zooplankton, pelagic surface water microbes, and pelagic surface water chemistry), and may be collected opportunistically during other sampling visits to lake and river sites. Measurements are collected only near the buoy sensors in lakes and rivers, and data are collected year-round, including under ice. Measurements of water temperature, conductivity, and dissolved oxygen are collected every 0.5 m through the water column, with larger intervals (1.0 m) in the hypolimnion of deep lakes. Data are collected a minimum of 12 times per year. Instrumentation: YSI Pro2030
DOI: 10.48443/jtnt-6r86
title: Photosynthetically active radiation below water surface (DP1.20261.001)
title: RELEASE-2023

description: Photosynthetically active radiation below water is measured at 1 Hz at lake littoral sensor sets and twice per minute on buoys at lake and river sites. It is reported as 1-minute mean measurements and 30-minute mean values.

Latency: Data collected in any given month are published during the second full week of the following month.
description: The littoral sensor sets measure PAR below water surface along with water level and temperature. The buoys, deployed at both lakes and rivers, are comprised of sensor sets which measure meteorological parameters over a water surface along with submerged sensors that measure physical and chemical parameters of the water body. Some of these sensors are unique to the buoy subsystem and others are shared with other NEON subsystems, such as the wadeable stream sensor sets or terrestrial towers. Due to power, space, and data storage constraints on the buoy, the configuration of sensors deployed on a buoy may be different than those in other parts of NEON. Instrumentation: LI-COR LI-192A underwater PAR sensor
DOI: 10.48443/rghw-ek76
title: Temperature at specific depth in surface water (DP1.20264.001)
title: RELEASE-2023

description: Temperature at specific depths on buoys is measured every minute and is reported as 1-minute instantaneous measurements and 30-minute mean values. A temperature chain with between 3 and 10 thermistors (depending on lake depth) is affixed from the buoy at the water surface. The shallowest thermistor is located at 5 cm below the water surface. Deeper thermistors have their depth published with the data and vary for each lake or river.

Latency:
Data collected in any given month are published during the second full week of the following month.
description: The buoys are comprised of sensor sets which measure meteorological parameters over a water surface along with submerged sensors that measure physical and chemical parameters of the water body. Some of these sensors are unique to the buoy subsystem and others are shared with other NEON subsystems, such as the wadeable stream sensor sets or terrestrial towers. Due to power, space, and data storage constraints on the buoy, the configuration of sensors deployed on a buoy may be different than those in other parts of NEON. Instrumentation: Precision Measurement Engineering Inc. - T-Chain RS 232/485
DOI: 10.48443/vt9n-q488
title: Gauge height (DP1.20267.001)
title: RELEASE-2023

description: Gauge height is the height of the water surface above an established altitude where the stage is zero. The zero level is arbitrary, but is often close to the streambed. Gauge height at stream sites will be related to measurements of stream discharge to formulate stage-discharge rating curves at all NEON stream and river sites. Rating equations will be applied to continuous surface water elevation data in order to calculate continuous stream discharge at all NEON aquatic sites. For additional details, see protocol [NEON.DOC. 001085]( http://data.neonscience.org/api/v0/documents/NEON.DOC.001085vD): AOS Protocol and Procedure: Stream Discharge, [NEON.DOC.001646](http://data.neonscience.org/api/v0/documents/NEON.DOC.001646vC): General AQU Field Metadata Sheet, and [NEON.DOC.001152](http://data.neonscience.org/api/v0/documents/NEON.DOC.001152vA): Aquatic Sampling Design.

Latency:
The expected time from data and/or sample collection in the field to data publication is as follows, for each of the data tables (in days) in the downloaded data package. See the Data Product User Guide for more information.

gag_fieldData:  30
description: Gauge measurements and field metadata are collected at all aquatic sites whenever any other protocol is implemented. For protocols that may be performed in shifts multiple times a day, e.g. fish sampling, there can be multiple gauge records per site per date that cover different time ranges. In total, gauge height is measured several times per month per site. Instrumentation: Oregon Rule Co. staff gauge
DOI: 10.48443/x0jh-tp02
title: Relative humidity above water on-buoy (DP1.20271.001)
title: RELEASE-2023

description: Relative humidity on buoys is measured every minute and is reported as 1-minute instantaneous measurements and 30-minute mean values. Other than the data collection frequency, this data product has the same data streams and processing as relative humidity measured at aquatic met stations and on the terrestrial instrument towers.

Latency:
Data collected in any given month are published during the second full week of the following month.
description: The buoys are comprised of sensor sets which measure meteorological parameters over a water surface along with submerged sensors that measure physical and chemical parameters of the water body. Some of these sensors are unique to the buoy subsystem and others are shared with other NEON subsystems, such as the wadeable stream sensor sets or terrestrial towers. Due to power, space, and data storage constraints on the buoy, the configuration of sensors deployed on a buoy may be different than those in other parts of NEON. Instrumentation: Vaisala HUMICAP Humidity and Temperature Probe - HMP 155