cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6073/pasta/dbe0583cf988f12477794954724fbc1d
title: Hubbard Brook field weather notes 1990-2019

description: Hubbard Brook weather notes (aka field notes) are daily weather
 observations by technicians at Hubbard Brook – a record that began in
 the mid-1970s, and continues today. Weekend weather notes are
 included, and are observations from their nearby homes in Thornton,
 Campton or Plymouth NH. These notes capture subtle details in weather
 that are not recorded by sensors at Hubbard Brook. These may include,
 but are not limited to, thunderstorms, frontal passages, named storms
 (i.e. Hurricanes, Tropical storms), fog, ground surface frost,
 precipitation type, and cloud types. In this data package, the weather
 notes from 1990-2019 have been scanned into annual pdf files, and are
 zipped into 5 year increments for download.

 
 Temperature and precipitation data are noted on the weather note
 sheets – these data are from hygrothermographs and precipitation
 recording rain gage at STA/RG22 (Hubbard Brook Headquarters), and
 beginning in 2014-15, from digital sensors. Note that temperature and
 precipitation from these handwritten sheets should not be used for
 data analysis. Temperature and precipitation finalized QA/QC products
 are available in digital format at the links below. The handwritten
 weather notes should be used as reference only.

 
 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.

 
 USDA Forest Service, Northern Research Station. 2020. Hubbard Brook
 Experimental Forest: Daily Precipitation Rain Gage Measurements, 1956
 - present ver 14. Environmental Data Initiative.
 https://doi.org/10.6073/pasta/e735df68b214f75132179f39a04fb16e

 
 USDA Forest Service, Northern Research Station. 2020. Hubbard Brook
 Experimental Forest: Daily Temperature Record, 1955 – present ver 9.
 Environmental Data Initiative.
 https://doi.org/10.6073/pasta/e7c793b98b895de2bb5e505f9ff5e0cb
DOI: 10.6073/pasta/f1c686538b00ca5a42f748dfe9ec2d0d
title: Climate Change Across Seasons Experiment (CCASE) at the Hubbard Brook Experimental Forest; concentrations of foliar metabolites: polyamines, amino acids, chlorophyll, carotenoids, soluble proteins, soluble elements, sugars, and total nitrogen and carbon in red maple (Acer rubrum) trees.

description: Foliage was collected in 2015 and 2017 from red maple trees at the
 Climate Change Across Seasons Experiment (CCASE) as part of the
 Hubbard Brook Ecosystem Study (HBES). Analyses of foliar metabolites
 include polyamines, amino acids, chlorophylls, carotenoids, soluble
 proteins, soluble inorganic elements, sugars, and total nitrogen and
 carbon. There are six (11 x 14m) plots in total in this study; two
 control (plots 1 and 2), two warmed 5 degrees (°) Celsius (C) above
 ambient throughout the growing season (plots 3 and 4), and two warmed
 5 °C in the growing season, with snow removal during the winter to
 induce soil freezing and then warmed with buried heating cables to
 create a subsequent thaw (plots 5 and 6). Each soil freeze/thaw cycle
 includes 72 hours of soil freezing followed by 72 hours of thaw. Four
 kilometers (km) of heating cable are buried in the soil to warm these
 four plots. Together, these treatments led to warmer growing season
 soil temperatures and an increased frequency of soil freeze-thaw
 cycles (FTCs) in winter. Our goal was to determine how these changes
 in soil temperature affect foliar nitrogen (N) and carbon metabolism
 of red maple trees.

 
 These data were gathered as a collaborative effort at the Hubbard
 Brook Experimental Forest, which is operated and maintained by the
 USDA Forest Service, Northern Research Station.
DOI: 10.6073/pasta/dfad54606110f96c73d21555cd6c7a1b
title: Hubbard Brook Experimental Forest: Daily Precipitation Standard Rain Gage Measurements, 1956 - present

description: Precipitation has been measured using rain gauges located in or around
 each watershed since 1956. Three types of rain gauges have been used:
 standard, mechanical weight recording, and electronic weight
 recording. Between 1956 and 2014, precipitation was measured weekly at
 standard gages located at 24 stations in or near gaged watersheds and
 at the headquarters building. Weight-recording gages were located at 7
 of the 24 stations and capture a continuous strip-chart record. Weekly
 totals were prorated using daily totals from the nearest recording
 gage. Beginning in 2011, electronic weighing rain gauges began being
 implemented to measure 15-minute precipitation. The number of
 precipitation stations was reduced to 10, when each station was fully
 converted to an electronic gauge for measuring 15-minute and daily
 precipitation beginning in 2015 (Green et al. 2018).

 
 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.

 
 Publications related to this dataset:

 
 Bailey, Amey Schenck; Hornbeck, James W.; Campbell, John L.; Eagar,
 Christopher. 2003. Hydrometeorological database for Hubbard Brook
 Experimental Forest: 1955-2000. Gen. Tech. Rep. NE-305. Newtown
 Square, PA: U.S. Department of Agriculture, Forest Service,
 Northeastern Research Station. 36 p.

 
 Green, M.B., Campbell, J.L., Yanai, R.D., Bailey, S.W., Bailey, A.S.,
 Grant, N., Halm, I., Kelsey, E.P. and Rustad, L.E., 2018. Downsizing a
 long-term precipitation network: Using a quantitative approach to
 inform difficult decisions. PLoS one, 13(5), p.e0195966.
DOI: 10.6073/pasta/de0c8b529b7c2b986eb36d0287397065
title: Wood alpha-cellulose stable C isotope ratios from New Hampshire and Vermont

description: To quantify the effects of tree height and canopy position on delta13C
 of wood cellulose, we sampled 399 trees and saplings of eight species
 at nine forest stands across New Hampshire and Vermont, along with
 nearby saplings growing in the open. Samples were collected in
 2017-18, and we analyzed the combined alpha-cellulose from growth
 rings formed in 2013-2017 for each tree.

 
 These data are published in: Vadeboncoeur, M., K. Jennings, A.
 Ouimette, and H. Asbjornsen. (2020) Correcting tree-ring d13C time
 series for tree-size effects in eight temperate tree species. Tree
 Physiology. https://doi.org/10.1093/treephys/tpz138
DOI: 10.13026/9q7v-6016
title: Surface electromyographic signals collected during long-lasting ground walking of young able-bodied subjects

description: The present dataset is composed of long-lasting (around 5 minutes) surface
electromyographic (sEMG) signals recorded from 2011 and 2018 during ground
walking of 31 young (20 years < age < 30 years) able-bodied subjects in the
Movement Analysis Lab, Universita Politecnica delle Marche, Ancona, Italy.
Underweight, overweight, and obese people (body mass index, BMI < 18.5 Kg/m2
and BMI > 25 Kg/m2) and subjects affected by any pathological condition, joint
pain, or undergone orthopedic surgery are not included in the present dataset.
sEMG signals are acquired from the following ten different leg muscles (five
per leg): gastrocnemius lateralis (GL), tibialis anterior (TA), rectus femoris
(RF), hamstrings (Ham), and vastus lateralis (VL). Synchronized footswitch and
electrogoniometric data are provided in order to allow users to achieve a
spatial/temporal characterization of the sEMG signals. Data have been acquired
in subjects walking barefoot on level ground for around 5 min at their natural
speed and pace, following an eight-shaped path which includes rectilinear
segments and curves. The considerable length of the signals makes this dataset
very suitable for those studies where the numerosity of the data is essential,
such as machine/deep learning approaches, studies for analyzing and
quantifying the variability of muscle recruitment during physiological
walking, and creation of reference dataset in the characterization of
pathological conditions.
DOI: 10.13026/bwvb-ht51
title: Surface electromyographic signals collected during long-lasting ground walking of young able-bodied subjects

description: The present dataset is composed of long-lasting (around 5 minutes) surface
electromyographic (sEMG) signals recorded from 2011 and 2018 during ground
walking of 31 young (20 years < age < 30 years) able-bodied subjects in the
Movement Analysis Lab, Universita Politecnica delle Marche, Ancona, Italy.
Underweight, overweight, and obese people (body mass index, BMI < 18.5 Kg/m2
and BMI > 25 Kg/m2) and subjects affected by any pathological condition, joint
pain, or undergone orthopedic surgery are not included in the present dataset.
sEMG signals are acquired from the following ten different leg muscles (five
per leg): gastrocnemius lateralis (GL), tibialis anterior (TA), rectus femoris
(RF), hamstrings (Ham), and vastus lateralis (VL). Synchronized footswitch and
electrogoniometric data are provided in order to allow users to achieve a
spatial/temporal characterization of the sEMG signals. Data have been acquired
in subjects walking barefoot on level ground for around 5 min at their natural
speed and pace, following an eight-shaped path which includes rectilinear
segments and curves. The considerable length of the signals makes this dataset
very suitable for those studies where the numerosity of the data is essential,
such as machine/deep learning approaches, studies for analyzing and
quantifying the variability of muscle recruitment during physiological
walking, and creation of reference dataset in the characterization of
pathological conditions.
DOI: 10.13026/grdj-qx06
title: Surface electromyographic signals collected during long-lasting ground walking of young able-bodied subjects

description: The present dataset is composed of long-lasting (around 5 minutes) surface
electromyographic (sEMG) signals recorded from 2011 and 2018 during ground
walking of 31 young (20 years < age < 30 years) able-bodied subjects in the
Movement Analysis Lab, Universita Politecnica delle Marche, Ancona, Italy.
Underweight, overweight, and obese people (body mass index, BMI < 18.5 Kg/m2
and BMI > 25 Kg/m2) and subjects affected by any pathological condition, joint
pain, or undergone orthopedic surgery are not included in the present dataset.
sEMG signals are acquired from the following ten different leg muscles (five
per leg): gastrocnemius lateralis (GL), tibialis anterior (TA), rectus femoris
(RF), hamstrings (Ham), and vastus lateralis (VL). Synchronized footswitch and
electrogoniometric data are provided in order to allow users to achieve a
spatial/temporal characterization of the sEMG signals. Data have been acquired
in subjects walking barefoot on level ground for around 5 min at their natural
speed and pace, following an eight-shaped path which includes rectilinear
segments and curves. The considerable length of the signals makes this dataset
very suitable for those studies where the numerosity of the data is essential,
such as machine/deep learning approaches, studies for analyzing and
quantifying the variability of muscle recruitment during physiological
walking, and creation of reference dataset in the characterization of
pathological conditions.
DOI: 10.6073/pasta/4f2f0e0671e8b895964515855e0c47fa
title: Mass and Chemistry of Organic Horizons and Surface Mineral Soils on Watershed 6 at the Hubbard Brook Experimental Forest, 1976 - present

description: The forest floor of Watershed 6 was first sampled in
 1969-70. These data include forest floor thickness, soil
 mass, organic matter content, and major-element composition
 for samples collected since 1976. Watershed 6 has been
 resampled at intervals varying from one to ten years.
 Sampling at five to ten year intervals is expected to
 continue. This dataset includes samples from 1976, 1977,
 1978, 1982, 1987, 1992, 1997, 2002, and 2013.
 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.
DOI: 10.6073/pasta/377c0ef281d45e7bc5db4d0826dc40fd
title: Hubbard Brook Experimental Forest: 1 meter LiDAR-derived and Hydro-enforced Digital Elevation Models, 2012

description: This data package contains a 1 m LiDAR-derived digital elevation model
 (DEM) and a 1 m hydro-enforced DEM across Hubbard Brook EF. The LiDAR
 was collected during leaf-off and snow-free conditions by Photo
 Science, Inc. in April 2012 for the White Mountain National Forest
 (WMNF).

 
 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.
DOI: 10.6073/pasta/1d096ecc7ec857847c19a423fd689505
title: Hubbard Brook Experimental Forest: Mirror Lake Ice Cover 1968 - present

description: Mirror Lake is located within the Hubbard Brook Valley, NH and has
 been the subject of numerous continuous limnological investigations
 since the early 1960s. This data set reports ice cover, ice in and ice
 out data beginning in 1968 and continuing through the present.

 
 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.
DOI: 10.6073/pasta/40e07ab244d6942bff7c39334ff70f29
title: Hubbard Brook Experimental Forest: Watershed 3 Manganese Transects

description: An area of Watershed 3 in Hubbard Brook Experimental Forest containing
 a seep, a spring and a swale was found to contain hot spots for soil
 manganese. The source of the Mn was thought to be groundwater
 discharge, and this area was studied intensively due to its
 implications for disproportionately affecting headwater stream
 chemistry. Soils were sampled along a grid pattern; O and B horizon
 samples were collected and analyzed for dithionite-extractable (total
 secondary) Mn & Fe, pH, total organic C and N, moisture content,
 and Cr oxidation potential (indicative of Mn oxide reactivity). The
 data were spatially interpolated to identify areas of Mn enrichment
 and other chemical variables related to topography and groundwater
 discharge. Two hot spots for soil Mn were found: one in a poorly
 drained, flowing spring and one in a moderately well-drained swale,
 which had similarly high Mn (6000-9000 mg
 kg-1 soil). However, the spring soils had
 high Cr oxidation potential while the nearby swale soils did not,
 indicating a difference in Mn reactivity. A third location in the
 study area was a poorly drained seep with water that was not visibly
 flowing, and these soils had lower quantities of Mn and low Cr
 oxidation potential.
DOI: 10.6073/pasta/d492ab51366305a720f47bc6e2604e66
title: Climate Change Across Seasons Experiment (CCASE) at the Hubbard Brook Experimental Forest: Net Nitrogen Mineralization via Buried Bags

description: Rates of net nitrogen mineralization were measured on all Climate
 Change Across Seasons Experiment (CCASE) plots. There are six plots
 total (each 11 x 14m). Two are warmed 5 degrees C throughout the
 growing season (Plots 3 and 4). Two others are warmed 5 degrees C in
 the growing season and have snow removed during winter to induce soil
 freezing and then warming cables turn on to create thaws; each soil
 freeze/thaw cycle includes 72-hours of soil freezing followed by
 72-hours of thaw (Plots 5 and 6). Four kilometers (2.5 mi) of heating
 cable are buried in the soil to warm these four plots. Two additional
 plots serve as controls for our experiment (Plots 1 and 2). This data
 set includes net nitrogen mineralization data collected in the growing
 season of 2017.

 
 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.
DOI: 10.6073/pasta/7c46f605951f774d1e2ae44903d5b5db
title: Climate Change Across Seasons Experiment (CCASE) at the Hubbard Brook Experimental Forest: Foliar Nitrogen and Natural Abundance Nitrogen Isotopic Composition

description: Foliar nitrogen and natural abundance stable isotopes of nitrogen in
 foliage were measured on all Climate Change Across Seasons Experiment
 (CCASE) plots. There are six plots total (each 11 x 14 m). Two are
 warmed 5 degrees C throughout the growing season (Plots 3 and 4). Two
 others are warmed 5 degrees C in the growing season and have snow
 removed during winter to induce soil freezing and then warming cables
 turn on to create thaws; each soil freeze/thaw cycle includes 72-hours
 of soil freezing followed by 72-hours of thaw (Plots 5 and 6). Four
 kilometers (2.5 mi) of heating cable are buried in the soil to warm
 these four plots. Two additional plots serve as controls for our
 experiment (Plots 1 and 2). This data set includes foliar nitrogen and
 natural abundance stable isotopes of nitrogen in foliage from 2012 to
 2018.

 
 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.
DOI: 10.6073/pasta/c6a9ac6c5cbc05888170902b8af54869
title: Climate Change Across Seasons Experiment (CCASE) at the Hubbard Brook Experimental Forest: Soil and Air Temperature

description: Soil temperature was measured on all Climate Change
 Across Seasons Experiment (CCASE) plots. Reference (or
 control) plots are shared with the collaborating Northern
 Forest DroughtNet experiment. There are six plots total (each
 11 x 14m). Two are warmed 5 degrees C throughout the growing
 season (Plots 3 and 4). Two others are warmed 5 degrees C in
 the growing season and have snow removed during winter to
 induce soil freeze/thaw cycles (Plots 5 and 6). Four
 kilometers (2.5 mi) of heating cable are buried in the soil
 to warm these four plots. Two additional plots serve as
 controls for our experiment (Plots 1 and 2). This data set
 includes tree dbh measurements for 2012.
 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.
DOI: 10.6073/pasta/8d2d88dc718b6c5a2183cd88aae26fb1
title: Chemistry of Bulk Precipitation at Hubbard Brook Experimental Forest, Watershed 6, 1963 - present

description: Precipitation chemistry has been measured at the Hubbard 
 Brook Experimental Forest since 1963. This data set 
 includes volume-weighted, average, monthly concentrations of 
 cations, anions, and pH for watershed 6. Monthly averages are calculated from 
 samples collected at weekly intervals from several bulk 
 precipitation stations located in the experimental watersheds.
DOI: 10.6073/pasta/dba1fee4e3326e77f27440dd86f84356
title: Hubbard Brook Experimental Forest (USDA Forest Service): Instantaneous Streamflow by Watershed, 1956 - present

description: Streamflow at 9 watersheds within the Hubbard Brook
 Experimental Forest has been measured continuously from as
 early as 1955. Streams are gaged with V-notch weirs at the
 outlet of each watershed. Height of water behind the weir
 increases with increased streamflow and is recorded by means
 of a float attached mechanically to a pen on a spring-wound
 strip-chart recorder. For each day, 2 to 130 points on the
 chart trace are digitized, depending on the rate of change of
 flow. Gage heights are converted to streamflow rate by
 calibration and conversion factors. There is a discharge
 value for every digitized point.
 Beginning January 1, 2013, instantaneous streamflow
 data are measured by electronic sensors, and data are
 provisional as the transition from chart to digital data
 collection is still under evaluation. Data may be updated
 before they are finalized. Please contact the dataset creator
 prior to data use/publication.
 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.
DOI: 10.6073/pasta/5b0aa0348f2f7289388085f67029970c
title: Fine Litterfall Data at the Hubbard Brook Experimental Forest, 1992 - present

description: Fine litterfall (leaves, twigs, fruits, seeds, etc.) is collected in
 Watershed 1, Watershed 5, the Throughfall plots and the Bear Brook
 Watershed reference forest, located to the west of Watershed 6, to
 quantify carbon and nutrient flux associated with this important
 pathway. In addition, measurements of area per leaf are combined with
 counts of leaves for each tree species to quantify leaf area index of
 the forest. These measurements have facilitated quantification of ice
 storm effects and species declines (paper birch, sugar maple).

 
 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.
DOI: 10.6073/pasta/40fc80509809ced0882239369c3cf398
title: Hubbard Brook Experimental Forest: Chemistry of Streamwater – Monthly Volume Weighted Concentrations, Watershed 6, 1963 - present

description: These data include volume-weighted, average, monthly concentrations of
 cations, anions, and pH measured in Watershed 6.

 
 HBWatER is a long-term record of stream and precipitation chemistry
 and volume. Currently this record is supported by NSF LTREB funding
 (for sample collection and processing), USDA Forest Service (USFS)
 funding (for maintenance of stream gauges, analytical chemistry and
 sample archiving), and LTER (for disposable supplies). The HBWatER
 supervisory team currently includes Emma Rosi (Cary Institute of
 Ecosystem Studies), Emily Bernhardt (Duke University), John Campbell
 (USFS), Charley Driscoll (Syracuse University.), Mark Green (Case
 Western Reserve University), Bill McDowell (University of NH ), and
 Lindsey Rustad (USFS).

 
 The long-term hydrologic record and calculation of fluxes are
 currently supervised by John Campbell (USFS). The collection and
 management of the long-term chemistry record is currently supervised
 by Emma Rosi (Cary Institute of Ecosystem Studies) and Emily Bernhardt
 (Duke University). At present field samples are collected by Tammy
 Wooster (Cary Institute of Ecosystem Studies), Chemical analyses are
 performed by Jeff Merriam (USFS). Data management and archiving is
 performed by Mary Martin (University of NH)

 
 HBWatER was initiated in 1963 by G.E. Likens, F. H. Bormann, R.
 Pierce, and N. Johnson. The record has been funded over its lifetime
 by the Mary Flagler Cary Charitable Trust, The Andrew W. Mellon
 Foundation, HBR LTER grants (#8702331, #9211768, #9810221, #0423259,
 #1114804, #1637685) and NSF LTREB (# 1256696). A full list of
 contributors to the HBWatER over its lifetime is provided at:
 Bernhardt E., G. Likens, E. Rosi. 2019. Continuous
 precipitation and stream chemistry data, Hubbard Brook Ecosystem
 Study, 1963 – present.. Environmental Data Initiative.
 https://doi.org/10.6073/pasta/4022d829f3a1fa4057b63b5db8b1a172.

 
 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.