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Climate Change Across Seasons Experiment (CCASE) at the Hubbard Brook Experimental Forest: Soil Water Isotopic Composition

General Information
Data Package:
Local Identifier:knb-lter-hbr.272.1
Title:Climate Change Across Seasons Experiment (CCASE) at the Hubbard Brook Experimental Forest: Soil Water Isotopic Composition
Alternate Identifier:DOI PLACE HOLDER
Abstract:

Natural abundance stable isotopes of oxygen and hydrogen in soil water were measured adjacent to the 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 natural abundance stable isotopes of oxygen and hydrogen in soil water from 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.

Publication Date:2020-07-14

Time Period
Begin:
2018-06-01
End:
2018-08-31

People and Organizations
Contact:Hubbard Brook Ecosystem Study [  email ]
Creator:Templer, Pamela (Boston University)
Creator:Harrison, Jamie (Boston University)
Creator:Blagden, Megan (Boston University)
Creator:Green, Mark (Case Western Reserve University)
Creator:Salvucci, Guido (Boston University)

Data Entities
Data Table Name:
CCASE_Soil_Water_Isotopes
Description:
CCASE Soil Water Isotopes
Detailed Metadata

Data Entities

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-hbr/272/1/7c44e5359a3e6cd8831b18d15e881546
Name:CCASE_Soil_Water_Isotopes
Description:CCASE Soil Water Isotopes
Number of Records:66
Number of Columns:9

Table Structure
Object Name:CCASE_Soil_Water_Isotopes.csv
Size:4226 bytes
Authentication:a8a4b5e63123fbba1c597a90bb08fbc7 Calculated By MD5
Text Format:
Number of Header Lines:1
Record Delimiter:\r\n
Orientation:column
Simple Delimited:
Field Delimiter:,
Quote Character:"

Table Column Descriptions
 
Column Name:Site  
Project  
Year  
CollectionDate  
CollectionMonth  
AdjacentTo  
Depth  
delta_18O  
delta_2H  
Definition:Site of experiment (Hubbard Brook Experimental Forest – HBEF)Climate Change Across Seasons Experiment (CCASE)Year of sample collection (2018)Date of sample collectionMonth of sample collectionWhether the soil samples were collected in a pit adjacent to plots with ambient soil temperatures (Reference) or in a pit adjacent to plots that are warmed in the growing season or warmed in the growing season with soil freeze/thaw cycles in winter (Treatment)A range of values representing the depths aggregated in a soil pit sample during collection. Values are depth below soil surface (-5-0, 0-10, 10-20, 20-30, 30-40, 40-50, 50-60, 60-70, 70-80, 80-90, 90-100)Natural abundance soil water 18ONatural abundance soil water 2H
Storage Type:string  
string  
date  
date  
string  
string  
string  
float  
float  
Measurement Type:nominalnominaldateTimedateTimenominalnominalnominalratioratio
Measurement Values Domain:
DefinitionSite of experiment (Hubbard Brook Experimental Forest – HBEF)
DefinitionClimate Change Across Seasons Experiment (CCASE)
FormatYYYY
Precision
FormatYYYY-MM-DD
Precision
DefinitionMonth of sample collection
Allowed Values and Definitions
Enumerated Domain 
Code Definition
CodeReference
DefinitionPit ajacent to ambient reference plot
Source
Code Definition
CodeTreatment
DefinitionPit ajacent to warmed treatment plot
Source
DefinitionA range of values representing the depths aggregated in a soil pit sample during collection. Values are depth below soil surface (-5-0, 0-10, 10-20, 20-30, 30-40, 40-50, 50-60, 60-70, 70-80, 80-90, 90-100)
Unitpermil
Typereal
Min-14.43 
Max-3.35 
Unitpermil
Typereal
Min-109.33 
Max-33.44 
Missing Value Code:              
CodeNA
Expldata not available
CodeNA
Expldata not available
Accuracy Report:                  
Accuracy Assessment:                  
Coverage:                  
Methods:                  

Data Package Usage Rights

This information is released under the Creative Commons license - Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/). The consumer of these data (\"Data User\" herein) is required to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available \"as is.\" The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.

Keywords

By Thesaurus:
LTER Core Research Areasdisturbance
LTER Controlled Vocabularyecosystems, forests, soil temperature, soil, deuterium
HBES Vocabularysoil warming, snow removal, HBR, LTER, Hubbard Brook Ecosystem Study, Hubbard Brook Experimental Forest, New Hampshire, White Mountain National Forest, Climate change across seasons experiment, CCASE, Acer rubrum, stable isotopes
ISO 19115 Topic Categorybiota, climatologyMeteorologyAtmosphere
National Research & Development TaxonomyEcology, Ecosystems, & Environment, Climate change, Climate change effects

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods and protocols used in the collection of this data package
Description:

We collected soil samples on three days that represented the early (June 11), peak (July 9), and late (August 16) growing season in 2018. We collected integrated, duplicated soil samples from the organic soil layer (Oe and Oa; -5-0 cm) and across every 10 cm down to 1 m in two soil pits, but only analyzed one sample for isotopic composition: one pit sampled adjacent (< 5 m) to reference plots (n = 1 soil sample for each depth; n = 11 samples on each date; n = 33 samples total throughout the growing season) and one pit adjacent (< 5 m) to treatment plots (warmed and warmed + FTC; n = 1 soil sample for each depth; n = 11 samples on each date; n = 33 samples total throughout the growing season). Pits were 2 m wide and 1 m deep and samples were collected from the edge of the pit facing the plots. We gently scraped away soil from the 2 cm of the soil pit exposed to air (area of soil facing the opening of the soil pit) prior to sample collection throughout the 0-1 m depth soil pit in case evaporation occurred from the side of the pit that was exposed to air. Soil samples were placed directly into scintillation vials and stored in a cooler with ice. Once in the laboratory, all samples were frozen until analysis.

Water from soil was extracted using a cryogenic vacuum distillation system at the Boston University Stable Isotope Lab (Boston, MA, USA). The extraction time was approximately 60 minutes for soil samples. All soil water samples were analyzed for stable isotopic composition using a Liquid Isotope Water Analyzer (LIWA) cavity ringdown spectrometer (Model DLT-100; Los Gatos Research, Mountain View, CA, USA) at Plymouth State University (Plymouth, NH, USA). For each date, the stable isotope ratios of hydrogen and oxygen in each water sample were determined and expressed in standard delta notation (δ2H and δ18O, respectively, ‰). We corrected for narrow and broadband spectral interference due to the presence of organic compounds using the LGR-SCI software (Version 1.0.0.69; Schultz et al., 2011).

Schultz, N.M., Griffis, T.J., Lee, X., Baker, J.M., 2011. Identification and correction of spectral contamination in 2H/ 1H and 18O/ 16O measured in leaf, stem, and soil water. Rapid Commun. Mass Spectrom. 25, 3360–3368. https://doi.org/10.1002/rcm.5236

People and Organizations

Creators:
Individual: Pamela Templer
Organization:Boston University
Email Address:
ptempler@bu.edu
Id:https://orcid.org/0000-0002-6570-3837
Individual: Jamie Harrison
Organization:Boston University
Email Address:
harrisoj@bu.edu
Id:https://orcid.org/0000-0001-7937-0503
Individual: Megan Blagden
Organization:Boston University
Email Address:
mblagden@bu.edu
Individual: Mark Green
Organization:Case Western Reserve University
Email Address:
mbg78@case.edu
Id:https://orcid.org/0000-0002-7415-7209
Individual: Guido Salvucci
Organization:Boston University
Email Address:
gdsalvuc@bu.edu
Id:https://orcid.org/0000-0003-3609-5972
Contacts:
Organization:Hubbard Brook Ecosystem Study
Email Address:
hbr-im@lternet.edu

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period
Begin:
2018-06-01
End:
2018-08-31
Geographic Region:
Description:CCASE (Climate Change Across Seasons Experiment) plots located north of the Pierce Laboratory.
Bounding Coordinates:
Northern:  43.94688Southern:  43.945197
Western:  -71.702662Eastern:  -71.69936

Project

Parent Project Information:

Title:Environmental Biology (DEB) CAREER: Role of Plant Nutrient Uptake in Forest Nutrient Retention and Carbon Sequestration: an Integrated Research, Teaching and Outreach Program
Personnel:
Individual: Pamela Templer
Organization:Boston University
Email Address:
ptempler@bu.edu
Id:https://orcid.org/0000-0002-6570-3837
Role:Principal Investigator
Funding: National Science Foundation 1149929
Related Project:
Title:Long Term Ecological Research (LTER) at the Hubbard Brook Experimental Forest
Personnel:
Individual: Gary Lovett
Organization:Cary Institute of Ecosystem Studies
Email Address:
lovettg@caryinstitute.org
Id:https://orcid.org/0000-0002-8411-8027
Role:Principal Investigator
Funding: National Science Foundation 1114804
Related Project:
Title:Long Term Ecological Research (LTER) at the Hubbard Brook Experimental Forest
Personnel:
Individual: Gary Lovett
Organization:Cary Institute of Ecosystem Studies
Email Address:
lovettg@caryinstitute.org
Id:https://orcid.org/0000-0002-8411-8027
Role:Principal Investigator
Funding: National Science Foundation 1637685

Maintenance

Maintenance:
Description:complete
Frequency:
Other Metadata

Additional Metadata

additionalMetadata
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        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'permil'
        |     |     |     |  \___attribute 'name' = 'permil'
        |     |     |     |  \___attribute 'parentSI' = ''
        |     |     |     |  \___attribute 'unitType' = ''
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'parts per thousand parts'
        |     |     |     |___text '\n        '
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

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