cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6073/pasta/4e55208c2beb68dbdcef5d78e2102897
title: Mark-recapture data of the Northern Spring Salamander (Gyrinophilus porphyriticus), Hubbard Brook Experimental Forest, 2012 - present

description: This data set includes spatially explicit mark-recapture data of the
 Northern Spring Salamander (Gyrinophilus porphyriticus) collected
 during the summer months (June – August) from downstream and upstream
 reaches in multiple streams in the Hubbard Brook Experimental Forest.
 Downstream reaches begin at the confluence with the Main Hubbard and
 extend upstream 500 meters and upstream reaches begin at the weir and
 extend downstream 500 meters. Downstream reaches contain brook trout
 and upstream reaches do not. We used a robust design framework with
 approximately 9 surveys per reach each summer (3 primary occasions
 with 3 secondary occasions each). Salamanders were captured by hand
 and marked with either Visual Implant Elastomer and/or a PIT tag.

 
 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.

 
 These data have been published in the following papers: Lowe WH, Addis
 BR, Smith MR, Davenport JM. The spatial structure of variation in
 salamander survival, body condition and morphology in a headwater
 stream network. Freshwater Biol. 2018;63:1287–1299.
 https://doi.org/10.1111/fwb.13133

 
 Lowe WH and Addis,BR. (in press) Matching habitat choice and
 plasticity contribute to phenotype-environment covariation in a stream
 salamander. Ecology.
DOI: 10.6073/pasta/852515f6ffcbd91048d6d942a582048f
title: Climate Change Across Seasons Experiment (CCASE) at the Hubbard Brook Experimental Forest: Snow and Frost

description: This dataset contains snow depth and frost depth measurements from the 
 Climate Change Across Seasons Experiment (CCASE) at the Hubbard Brook Experimental Forest.
 Samples are collected weekly throughout the winter months.
DOI: 10.6073/pasta/5c63f7dc10593cf9b5c9215cd940f255
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.
DOI: 10.6073/pasta/4c15ee5dac54d091819d056f4d1fd483
title: Climate Change Across Seasons Experiment (CCASE) Sapling Study at the Hubbard Brook Experimental Forest: Root Damage

description: Root damage, as relative electrolyte leakage, was assessed following winter freeze-thaw cycle experimental treatments in 2014 and 2015. 
 There were seven treatments for each species of maple. For each species, ten saplings experienced ambient temperatures (reference), 
 ten experienced growing season warming with no induced freeze-thaw cycles in winter (warmed), ten in each of four groups experienced 
 warming in the growing season coupled with two, four, six, or eight soil freeze-thaw cycles in winter (warmed + 2 FTC, warmed + 4 FTC, 
 warmed + 6 FTC, warmed + 8 FTC), and ten experienced snow removal in winter with ambient temperatures in the growing-season (snow removal).
DOI: 10.6073/pasta/a6780fe186f3da8ec1348f22366100e0
title: Climate Change Across Seasons Experiment (CCASE) Sapling Study at the Hubbard Brook Experimental Forest: Foliar Nitrogen

description: Foliar nitrogen concentrations of red maple and sugar maple saplings experiencing combinations of soil warming and winter 
 freeze-thaw cycles were measured during the growing season of 2014 and 2015 
 as an indicator of plant nitrogen status.
 
 
 There were seven treatments for each species of maple. For each species, ten saplings experienced ambient 
 temperatures (reference), ten experienced growing season warming with no induced freeze-thaw cycles in winter 
 (warmed), ten in each of four groups experienced warming in the growing season coupled with two, four, six, or 
 eight soil freeze-thaw cycles in winter (warmed + 2 FTC, warmed + 4 FTC, warmed + 6 FTC, warmed + 8 FTC), 
 and ten experienced snow removal in winter with ambient temperatures in the growing-season (snow removal).
DOI: 10.6073/pasta/40e33a5743be504c5aabf3e07d0995c3
title: Climate Change Across Seasons Experiment (CCASE) Sapling Study at the Hubbard Brook Experimental Forest: Growth and Litter

description: Litterfall production and stem growth of red maple and sugar maple saplings 
 were assessed as measures of aboveground productivity in 2013 (to determine baseline 
 values before treatment was initiated) and in 2014 after saplings experienced a 
 combination of soil warming and winter freeze-thaw cycles treatments. 
 
 There were seven treatments for each species of maple. For each species, ten saplings experienced ambient 
 temperatures (reference), ten experienced growing season warming with no induced freeze-thaw cycles in 
 winter (warmed), ten in each of four groups experienced warming in the growing season coupled with two, four, 
 six, or eight soil freeze-thaw cycles in winter (warmed + 2 FTC, warmed + 4 FTC, warmed + 6 FTC, warmed + 8 FTC), 
 and ten experienced snow removal in winter with ambient temperatures in the growing-season (snow removal).
DOI: 10.6073/pasta/621e8639cced6d174e5ee566adb06756
title: Climate Change Across Seasons Experiment (CCASE) Sapling Study at the Hubbard Brook Experimental Forest: Herbivory Damage and Snow Depth

description: During the winter 2014-15 there was extensive over-winter herbivory damage to 
 sapling stems in the Climate Chaneg Across Seasons (CCASE) sapling experiment in the 
 form of partial or complete girdling from bark consumption. Measurements of the extent of 
 bark damage, the recovery class of the saplings, and the average snow depth during winter 
 were made for each experimental treatment. 
 
 There were seven treatments for each species of maple. For each species, ten saplings experienced ambient 
 temperatures (reference), ten experienced growing season warming with no induced freeze-thaw cycles in 
 winter (warmed), ten in each of four groups experienced warming in the growing season coupled with two, four, 
 six, or eight soil freeze-thaw cycles in winter (warmed + 2 FTC, warmed + 4 FTC, warmed + 6 FTC, warmed + 8 FTC), 
 and ten experienced snow removal in winter with ambient temperatures in the growing-season (snow removal).
DOI: 10.6073/pasta/0f6fe437abba002553e4ad64a91f0f62
title: Climate Change Across Seasons Experiment (CCASE) Sapling Study at the Hubbard Brook Experimental Forest: Photosynthesis

description: Rates of leaf-level photosynthesis of red maple and sugar maple saplings 
 experiencing combinations of soil warming and winter freeze-thaw cycles was 
 measured biweekly on fully expanded, intact leaves from June through August 2014 
 and June through September 2015 using a LI-6400.
 
 There were seven treatments for each species of maple. For each species, ten saplings experienced ambient 
 temperatures (reference), ten experienced growing season warming with no induced freeze-thaw cycles in 
 winter (warmed), ten in each of four groups experienced warming in the growing season coupled with two, four, 
 six, or eight soil freeze-thaw cycles in winter (warmed + 2 FTC, warmed + 4 FTC, warmed + 6 FTC, warmed + 8 FTC), 
 and ten experienced snow removal in winter with ambient temperatures in the growing-season (snow removal).
DOI: 10.6073/pasta/6ce35c0cf60a9a2ad52ba7b020004190
title: Climate Change Across Seasons Experiment (CCASE) Sapling Study at the Hubbard Brook Experimental Forest: Soil and Air Temperature

description: Soil temperature was measured on all Climate Change Across Seasons Experiment (CCASE) 
 sapling treatment plots. There were seven treatments for each species of maple. 
 For each species, ten saplings experienced ambient temperatures (reference), ten 
 experienced growing season warming with no induced freeze-thaw cycles in winter (warmed), 
 ten in each of four groups experienced warming in the growing season coupled with two, four, 
 six, or eight soil freeze-thaw cycles in winter (warmed + 2 FTC, warmed + 4 FTC, warmed + 6 FTC, 
 warmed + 8 FTC), and ten experienced snow removal in winter with ambient temperatures in the growing-season (snow removal).
DOI: 10.6073/pasta/46a9d6b84747ad87e1daace71c8a20b3
title: Climate Change Across Seasons Experiment (CCASE) Sapling Study at the Hubbard Brook Experimental Forest: Spring Phenology

description: Timing of spring leaf-out of red maple and sugar maple saplings experiencing combinations of soil warming and winter freeze-thaw cycles was assessed weekly in 2014 and 2015 from late April (when growing season warming began) through early June when leaves were fully expanded. 
 
 There were seven treatments for each species of maple. For each species, ten saplings experienced ambient 
 temperatures (reference), ten experienced growing season warming with no induced freeze-thaw cycles in 
 winter (warmed), ten in each of four groups experienced warming in the growing season coupled with two, four, 
 six, or eight soil freeze-thaw cycles in winter (warmed + 2 FTC, warmed + 4 FTC, warmed + 6 FTC, warmed + 8 FTC), 
 and ten experienced snow removal in winter with ambient temperatures in the growing-season (snow removal).
DOI: 10.6073/pasta/1a06d382471c941f303a538f4c5bef6c
title: CH4 Uptake by Forest Soils at two sites in the Northeastern US

description: Soil to atmosphere net CH4 fluxes were measured
 at two different sites in order to assess the long term effects of
 environmental change on soil CH4 uptake. This
 data set includes samples collected between 1998-2016 at the Baltimore
 Ecosystem Study, MD and Hubbard Brook Experimental Forest, NH from
 2002-2015.

 
These data were assembled and are published here in support of the following paper: 
Ni, X. and P.M. Groffman. 2018. Decines in methane uptake in forest soils. Proceedings of the 
National Academies of Science of the United States of America: www.pnas.org/cgi/doi/10.1073/pnas.1807377115. 

 
This datset is a derived from two datasets in this same repository:

 
Groffman P. 2017. Soil atmosphere fluxes of carbon dioxide, nitrous oxide and methane. Environmental Data Initiative. https://doi.org/10.6073/pasta/d2d727c9638c0fc23bd5be55a767cfb5

 
Groffman P. 2016. Forest soil:atmosphere fluxes of carbon dioxide, nitrous oxide and methane at the Hubbard Brook Experimental Forest, 1997- present. Environmental Data Initiative. https://doi.org/10.6073/pasta/9d017f1a32cba6788d968dc03632ee03.
DOI: 10.6073/pasta/e15c338046c59338e5bdc2b169222c1a
title: Tree inventory data for the Hubbard Brook Valley Plots, baseline data collected 1995 - 1998

description: The valley-wide plots are a grid of 431 sites along fifteen N–S 
 transects established at 500-m intervals spanning the entire Hubbard Brook Valley. 
 Multiple above- and below- ground attributes were measured between 1995 and 1998. 
 This dataset includes forest inventory data; soil data and other measurements are presented
 in separate datasets.
DOI: 10.6073/pasta/6616120194b84a1cf312ca68d6e1a79f
title: Hubbard Brook Experimental Forest USGS 40ft Contours: GIS Shapefile

description: USGS 7.5' Topographic Quadrangles; Mount Kineo, NH - 1973, Woodstock, NH 1980.
 Contours at 40ft intervals were manually digitized. Data distributed as shapefile in 
 Coordinate system EPSG:26919 - NAD83 / UTM zone 19N
DOI: 10.6073/pasta/64342b49f66a38f0300bd964616aa446
title: Hubbard Brook Experimental Forest Hydrography: GIS Shapefile

description: Diazo copy of Hubbard Brook Watershed Map generated stereophoto- grammetrically
 based on May, 1956 aerial photography. Shows New Hampshire state plane coordinate
 system reference points which were projected into UTM Zone 19 and used as reference
 tics. The streams, ponds, and lakes were manually digitized. This shapefile contains only streams,
 see hbef_waterbodies for lake and pond polygons. Data distributed as shapefile in 
 Coordinate system EPSG:26919 - NAD83 / UTM zone 19N
DOI: 10.6073/pasta/b94cfea360224a487bf512a95598a42b
title: Hubbard Brook Experimental Forest Roads: GIS Shapefile

description: Diazo copy of Hubbard Brook Watershed Map generated stereophoto- grammetrically
 based on May, 1956 aerial photography. Shows New Hampshire state plane coordinate
 system reference points which were projected into UTM Zone 19 and used as reference
 tics. The roads and trails locations were manually digitized. In 2014, roads data layer was updated to
 reflect road locations as indicated in lidar data. Data distributed as shapefile in 
 Coordinate system EPSG:26919 - NAD83 / UTM zone 19N.
DOI: 10.6073/pasta/58cf9c83e11301e282d2aa5e908fc3c2
title: Hubbard Brook Experimental Forest Watershed Boundaries: GIS Shapefile

description: Diazo copy of Hubbard Brook Watershed Map generated stereophoto- grammetrically
 based on May, 1956 aerial photography. Shows New Hampshire state plane coordinate
 system reference points which were projected into UTM Zone 19 and used as reference
 tics. The watersheds boundaries were delineated on a paper diazo copy of the Hubbard
 Brook Watershed Map supplied by Wayne Martin and manually digitized. Data distributed as shapefile in 
 Coordinate system EPSG:26919 - NAD83 / UTM zone 19N
DOI: 10.6073/pasta/189538da2cb5d101082188d5b496d1e5
title: Chemistry of Streamwater at the Hubbard Brook Experimental Forest, Valleywide Measurements, 2001

description: Streamwater chemistry has been measured at the Hubbard
 Brook Experimental Forest since 1963. This study expands upon
 relationships observed from long-term studies of stream water
 chemistry within the nine gaged watersheds at Hubbard Brook
 Experimental Forest, in order to determine whether those
 relationships hold true for the wider Hubbard Brook Valley.
 This dataset includes data from samples collected across the
 valley from tributary streams of Hubbard Brook. Measurements
 included ANC, pH, DOC, DIC, cations, anions, specific
 conductance and temperature. .
 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/cd44b1938a3abef106e11d86cfe59d76
title: Hubbard Brook Experimental Forest: Routine Seasonal Phenology Measurements, 1989 - present

description: Spring and Fall leaf phenology observations have been made at 9 locations at the Hubbard Brook Experimental Forest since 1989. Timing and progression of spring leaf out and fall senescence are recorded for 3 dominant tree species, sugar maple, yellow birch, and beech, in treated and untreated watersheds and high and low elevations. Weekly measurements are taken during the active period of the fall or spring season. These data were gathered at the Hubbard Brook Experimental Forest in North Woodstock, NH, which is operated and maintained by the USDA Forest Service, Northern Research Station.
DOI: 10.6073/pasta/c9dc21212a3af50216f2db706f059714
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.

 
 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: 10.21227/cyyw-3306
title: S11 parameter measurement

description: A frequency dual polarized compact implantable antenna is designed and presented in this paper. The proposed circular antenna occupies a compact volume of 9.46 mm3 . To achieve frequency reconfigurability, the antenna uses switching configuration of PIN diodes and it operates at 1.395–1.432 GHz Wireless Medical Telemetry Service (WMTS) band and 2.4–2.48 GHz Industrial, Scientific, and Medical (ISM) band. Another feature of this antenna is its dual polarization capability, which allows it to operate at 1.4 GHz with Linear Polarization (LP) and 2.4 GHz with Right Hand Circular Polarization (RHCP).When compared to a conventional antenna, the proposed antenna design reduces size by approximately 88.6% for feed1 and 80.66% for feed2. Peak gains for the antenna are -31 dB at 1.4 GHz and -28 dBic at 2.41 GHz. The measured -10 dB bandwidths of the fabricated antenna are 11.48% and 6.81% at 1.4 GHz and 2.4 GHz respectively. The measured ARBW value at 2.4 GHz is 7.21%.
DOI: 10.6073/pasta/96ef3d45e9a7d719ae7731f0719bd483
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.

 
 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/efba421dc87e077ee28010069dac7c0d
title: Calling activity of Birds in the White Mountain National Forest: Audio Recordings (2016 and 2018)

description: We collected 410 10-minute sound recordings of birds in and near the
 Hubbard Brook Experimental Forest in New Hampshire. Recordings, which
 encompassed most of the bird breeding season in each of two years,
 included 130,776 vocalizations from 46 taxa. In the associated
 publication, we report species lists, rarefaction curves, and
 vocalization descriptions. We also provide analyses of habitat
 associations, phenology, and spatial patterning in vocalization
 activity.

 
 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/71525c9c724db0a21249584afca9ddbd
title: Data and code from Artificial light at night increases top-down pressure on caterpillars: experimental evidence from a light-naive forest - 2021-2022

description: This dataset has been prepared in support of a paper to be published in
Proceedings of the Royal Society B: Biological Sciences. It includes both data files and R
scripts used for the analysis in this publication:
 Deitch, J.F. and S.A. Kaiser. 2023. Artificial light at night increases
top-down pressure on caterpillars: experimental evidence from a
light-naive forest. Proceedings of the Royal Society B: Biological Sciences.
(https://doi.org/10.1098/rspb.2023.0153)
 Artificial light at night (ALAN) is a globally widespread and expanding
form of anthropogenic change that impacts arthropod biodiversity. ALAN
alters interspecific interactions between arthropods, including
predation and parasitism. Despite their ecological importance as prey
and hosts, the impact of ALAN on larval arthropod stages, such as
caterpillars, is poorly understood. We examined the hypothesis that ALAN
increases top-down pressure on caterpillars from arthropod predators and
parasitoids. We experimentally illuminated study plots with moderate
levels (10-15 lux) of LED lighting at light-naive Hubbard Brook
Experimental Forest, New Hampshire. We measured and compared between
experimental and control plots: 1) predation on clay caterpillars and 2)
abundance of arthropod predators and parasitoids. We found that
predation rates on clay caterpillars and abundance of arthropod
predators and parasitoids were significantly higher on ALAN treatment
plots relative to control plots. These results suggest that moderate
levels of ALAN increases top-down pressure on caterpillars. We did not
test mechanisms, but sampling data indicates that increased abundance of
predators near lights may play a role. This study highlights the
importance of examining the effects of ALAN on both adult and larval
life stages and suggests potential consequences of ALAN on arthropod
populations and communities.
 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/3f608226a1ed499e8fa3cd188e70757c
title: Hubbard Brook Experimental Forest: Chemistry of Streamwater – Monthly Fluxes, Watershed 6, 1963 - present

description: These data are monthly fluxes of solutes in stream water measured in
 watersheds of the Hubbard Brook Experimental Forest and are a part of
 the Hubbard Brook Watershed Ecosystem Record (HBWatER), which is a
 long-term record of stream and precipitation chemistry and volume. The
 solute fluxes in stream water are calculated as the product of the
 volume of stream water and solute concentrations. There are nine gaged
 watersheds at the Hubbard Brook Experimental Forest, some of which
 have been subjected to experimental manipulations. The calculation of
 fluxes is currently supervised by John Campbell (US Forest Service).
 The long-term stream water record is collected and maintained by the
 US Forest Service. The collection and management of the long-term
 stream and precipitation chemistry record was initiated in 1963 by
 Gene E. Likens, F. Herbert Bormann, Robert S. Pierce, and Noye M.
 Johnson. HBWatER is currently sustained by Tammy Wooster (Cary IES)
 and Jeff Merriam (USFS) and the dataset is curated and maintained by a
 team of researchers: Emma Rosi (Cary IES), Emily Bernhardt (Duke),
 Lindsey Rustad (USFS), John Campbell (USFS), Bill McDowell (UNH),
 Charley Driscoll (Syracuse U.), Mark Green (Case Western), and Scott
 Bailey (USFS). Current Financial Support for HBWatER is provided by
 NSF LTREB # 1907683 and the USDA Forest Service Northern Research
 Station.

 
 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 US Forest
 Service, Northern Research Station.