Climate Change Across Seasons Experiment (CCASE) at the Hubbard Brook Experimental Forest: Soil and Air Temperature
TITLE
Climate Change Across Seasons Experiment (CCASE) at the Hubbard Brook Experimental Forest: Soil and Air Temperature
PRINCIPAL INVESTIGATOR(s)
Pamela Templer
Boston University
Department of Biology
5 Cummington Mall
Boston, MA 02215
US

Phone: 617-353-6978
Rebecca Sanders-DeMott
University of New Hampshire
Earth Systems Research Center
8 College Rd
Durham, NH 03824
US
Stephanie Juice
University of Vermont
Burlington, VT
US
Francis Bowles
Research Designs
Lyme, NH
US
Laura Sofen
University of California Berkeley
Berkeley, CA
US
Jamie Harrison
Boston University
Boston, MA
US
OTHERS INVOLVED
Ian Halm
USDA Forest Service, Hubbard Brook Experimental Forest
234 Mirror Lake Road
North Woodstock, NH 03262
USA

Phone: (603) 726-8902
ABSTRACT:
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.
KEYWORD SET: Hubbard Brook Ecosystem Study LTER
soil temperature, ecosystems, forests, HBEF CCASE Plots, HBR, Hubbard Brook LTER, soil warming, snow removal.
KEYWORD SET: LTER Core Research Areas
disturbance, populations.
BEGIN DATE
2012
END DATE
2016
LOCATION
CCASE (Climate Change Across Seasons Experiment)plots located north of the Pierce Laboratory.
West bounding coordinate: -71.702662
East bounding coordinate: -71.69936
North bounding coordinate: 43.94688
South bounding coordinate: 43.945197
RESEARCH SUMMARY
Mean annual temperatures for the northeastern U.S. are projected to increase 3-5 degrees C by the year 2100, which could increase water and nutrient uptake and carbon storage by trees. However, the increase in temperature will lead to a smaller winter snowpack and increased frequency of soil freeze/thaw cycles, which may offset the positive effects of warming by damaging roots. The overall result could be reduced nutrient uptake and storage of carbon and further elevation of atmospheric CO2 concentrations. Understanding the mechanisms and controls underlying changes in nutrient uptake by trees is necessary for improving predictions of how ecosystems will respond as the climate changes. Whereas many studies have evaluated the impacts of climate change on forests within a single season, few have examined the impacts of climate change across seasons and how these impacts interact. These "across season" effects could be antagonistic or synergistic, which would not be apparent from examining one season alone.
The goals of this research are to determine the interactive effects of winter and growing season climate on water and nutrient uptake and carbon sequestration in northern hardwood forests. These goals are being accomplished with a new ecosystem warming experiment at Hubbard Brook.
SITE DESCRIPTION
CCASE was established in a red maple (Acer rubrum) dominated forest in 2012. 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).
FIELD COLLECTION PROCEDURES
Soil temperature and moisture sensors are as follows: thermistors (Betatherm type 10K3A1, CSI part #13424) and soil moisture probes (model CS616, Campbell Scientific, Logan, UT, USA) in each of the six plots (installed fall 2012). The soil moisture probes were inserted vertically to provide an integrative measure of soil moisture across the top 30 cm of soil. Within the two reference plots, there are two soil moisture probes, four thermistors at 10 cm depth, 2 thermistors at 5 cm depth, and 1 thermistor at 30 cm depth. In each of the two warmed and two warmed + FTC plots, there are four moisture probes, six thermistors at 10 cm depth, two at 5 cm depth, and one at 30 cm depth.
Air temperature sensors are installed at height of 6 m above the forest floor; model CSI 215 Campbell Scientific, Logan, UT, USA)

REFERENCES
  • Templer, P.H., Reinmann, A.B., Sanders-DeMott, R., Sorenson, P.O., Juice, S.M., Bowles, F., Sofen, L., Harrison, J., Halm, I., Rustad, L., Martin, M., and Grant, N. (in Press) Climate Change Across Seasons Experiment (CCASE) at Hubbard Brook Experimental Forest: Combined Effects of Increased Growning Season Temperatures and Winter Freeze-Thaw Cycles on the Northern Forest. PLOS ONE,
DATA ACCESS GUIDELINES
Data Use Policy



The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. Permission to use this dataset is granted to the Data User free of charge subject to the following terms:

1) Acceptable use. Use of the dataset will be restricted to academic, research, government or other not-for-profit professional purposes.

2) Redistribution. The data and metadata are provided for use by the Data User. The Data User will not redistribute the original Data Set or metadata to others without the explicit permission of the Principal Investigator.

3) Citation. It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User will properly attribute the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set. Citation should take the following general form: Creator, Year of Data Publication, Title of Dataset, Publisher, Dataset identifier.

Citation example: Holmes, R.T. 2012. Bird Abundances at Hubbard Brook (1969-2010) and on three replicate plots (1986-2000) in the White Mountain National Forest. Durham, NH. Hubbard Brook Data Archive [Database]. http://hubbardbrook.org/data/dataset.php?id=81 (23 July 2012)

4) Acknowledgment: The Data User should acknowledge any institutional support or specific funding awards referenced in the metadata accompanying this dataset in any publications where the Data Set contributed to its content. Acknowledgments should identify the supporting party, the party that received the support, and any identifying information such as grant numbers.

Acknowledgment example: Data on [topic] were provided by [name of PI] on [date]. 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, Newtown Square, PA. Significant funding for collection of these data was provided by [agency]-[grant number], [agency]-[grant number], etc.

5) Consultation and questions. Data users are strongly encouraged to consult with the Principal Investigator(s) who collected these data for further information. Also, when appropriate, Data Users should consider including the Principal Investigator as a collaborator and/or co-author in the use of these data.

6) Notification. The Data User will notify the Principal Investigator of any publication or derivative work based on the Data Set. The Data User will also provide the Principal Investigator and/or the administrator of the Hubbard Brook Ecosystem Study with a pdf or two reprints of any publication(s) resulting from use of the Data Set.

7) Disclaimer. While substantial efforts are made to ensure the accuracy of data and documentation contained in this Data Set, complete accuracy of data and metadata cannot be guaranteed. All data and metadata are made available "as is". The Data User holds all parties involved in the production or distribution of the Data Set harmless for damages resulting from its use or interpretation.

8) Terms of Agreement. By accepting this Data Set, the Data User agrees to abide by the terms of this agreement. The Data Owner shall have the right to terminate this agreement immediately by written notice upon the Data User's breach of, or non-compliance with, any of its terms. The Data User may be held responsible for any misuse that is caused or encouraged by the Data User's failure to abide by the terms of this agreement.



CONTACT PERSON

Information Manager, Hubbard Brook LTER
234 Mirror Lake Road
North Woodstock, NH 03262
USA

Phone: (603) 726-8902
Email: hbr-im@lternet.edu

Data file: ccase_soiltemp.txt
Description: Soil temperature measurements in the CCASE plots at the Hubbard Brook Experimental Forest.
Notes on Data: The original data is located in the Templer Lab, Boston University and was updated in November 2015.
ColumnVariableDescriptionUnitsCoded?Missing value label
1TimestampSample collection date and timeYYYY-MM-DD HH:MM:SSnnone
2Ref5_Avg_Temp Reference average soil temperature at 5cm (plots 1 and 2) celsiusn
-99.99
3Warm5_Avg_Temp Warmed treatment average soil temperature at 5cm (plots 3 and 4) celsiusn
-99.99
4WarmFTC5_Avg_Temp Warmed plus freeze thaw cycle treatment average soil temperature at 5cm (plots 5 and 6) celsiusn
-99.99
5Ref10_Avg_Temp Reference average soil temperature at 10cm (plots 1 and 2) celsiusn
-99.99
6Warm10_Avg_Temp Warmed treatment average soil temperature at 10cm (plots 3 and 4) celsiusn
-99.99
7WarmFTC10_Avg_Temp Warmed plus freeze thaw cycle treatment average soil temperature at 10cm (plots 5 and 6) celsiusn
-99.99
8Ref30_Avg_Temp Reference average soil temperature at 30cm (plots 1 and 2) celsiusn
-99.99
9Warm30_Avg_Temp Warmed treatment average soil temperature at 30cm (plots 3 and 4) celsiusn
-99.99
10WarmFTC30_Avg_Temp Warmed plus freeze thaw cycle treatment average soil temperature at 30cm (plots 5 and 6) celsiusn
-99.99
11Plot1_Avg_Temp5 Plot 1 average soil temperature at 5cm celsiusn
-99.99
12Plot2_Avg_Temp5 Plot 2 average soil temperature at 5cm celsiusn
-99.99
13Plot3_Avg_Temp5 Plot 3 average soil temperature at 5cm celsiusn
-99.99
14Plot4_Avg_Temp5 Plot 4 average soil temperature at 5cm celsiusn
-99.99
15Plot5_Avg_Temp5 Plot 5 average soil temperature at 5cm celsiusn
-99.99
16Plot6_Avg_Temp5 Plot 6 average soil temperature at 5cm celsiusn
-99.99
17Plot1_Avg_Temp10 Plot 1 average soil temperature at 10cm celsiusn
-99.99
18Plot2_Avg_Temp10 Plot 2 average soil temperature at 10cm celsiusn
-99.99
19Plot3_Avg_Temp10 Plot 3 average soil temperature at 10cm celsiusn
-99.99
20Plot4_Avg_Temp10 Plot 4 average soil temperature at 10cm celsiusn
-99.99
21Plot5_Avg_Temp10 Plot 5 average soil temperature at 10cm celsiusn
-99.99
22Plot6_Avg_Temp10 Plot 6 average soil temperature at 10cm celsiusn
-99.99
23Plot1_Avg_Temp30 Plot 1 average soil temperature at 30cm celsiusn
-99.99
24Plot2_Avg_Temp30 Plot 2 average soil temperature at 30cm celsiusn
-99.99
25Plot3_Avg_Temp30 Plot 3 average soil temperature at 30cm celsiusn
-99.99
26Plot4_Avg_Temp30 Plot 4 average soil temperature at 30cm celsiusn
-99.99
27Plot5_Avg_Temp30 Plot 5 average soil temperature at 30cm celsiusn
-99.99
28Plot6_Avg_Temp30 Plot 6 average soil temperature at 30cm celsiusn
-99.99
29Avg_Air_Temp Average air temperature celsiusn
-99.99
30P1_Avg_VWC Plot 1 average soil moisture 0-30cm (fraction) numbern
-99.99
31P2_Avg_VWC Plot 2 average soil moisture 0-30cm (fraction) numbern
-99.99
32P3_Avg_VWC Plot 3 average soil moisture 0-30cm (fraction) numbern
-99.99
33P4_Avg_VWC Plot 4 average soil moisture 0-30cm (fraction) numbern
-99.99
34P5_Avg_VWC Plot 5 average soil moisture 0-30cm (fraction) numbern
-99.99
35P6_Avg_VWC Plot 6 average soil moisture 0-30cm (fraction) numbern
-99.99
36Ref_Avg_VWC Referenc average soil moisture 0-30cm (fraction) numbern
-99.99
37Warm_Avg_VWC Warmed treatment average soil moisture 0-30cm (fraction) numbern
-99.99
38FTC_Avg_VWC Warmed plus freeze thaw cycle treatment average soil moisture 0-30cm (fraction) numbern
-99.99


MISSING VALUE CODES
Variable
Missing Value Code
Code Explanation
Ref5_Avg_Temp
-99.99
Data missing or not taken at this time
Warm5_Avg_Temp
-99.99
Data missing or not taken at this time
WarmFTC5_Avg_Temp
-99.99
Data missing or not taken at this time
Ref10_Avg_Temp
-99.99
Data missing or not taken at this time
Warm10_Avg_Temp
-99.99
Data missing or not taken at this time
WarmFTC10_Avg_Temp
-99.99
Data missing or not taken at this time
Ref30_Avg_Temp
-99.99
Data missing or not taken at this time
Warm30_Avg_Temp
-99.99
Data missing or not taken at this time
WarmFTC30_Avg_Temp
-99.99
Data missing or not taken at this time
Plot1_Avg_Temp5
-99.99
Data missing or not taken at this time
Plot2_Avg_Temp5
-99.99
Data missing or not taken at this time
Plot3_Avg_Temp5
-99.99
Data missing or not taken at this time
Plot4_Avg_Temp5
-99.99
Data missing or not taken at this time
Plot5_Avg_Temp5
-99.99
Data missing or not taken at this time
Plot6_Avg_Temp5
-99.99
Data missing or not taken at this time
Plot1_Avg_Temp10
-99.99
Data missing or not taken at this time
Plot2_Avg_Temp10
-99.99
Data missing or not taken at this time
Plot3_Avg_Temp10
-99.99
Data missing or not taken at this time
Plot4_Avg_Temp10
-99.99
Data missing or not taken at this time
Plot5_Avg_Temp10
-99.99
Data missing or not taken at this time
Plot6_Avg_Temp10
-99.99
Data missing or not taken at this time
Plot1_Avg_Temp30
-99.99
Data missing or not taken at this time
Plot2_Avg_Temp30
-99.99
Data missing or not taken at this time
Plot3_Avg_Temp30
-99.99
Data missing or not taken at this time
Plot4_Avg_Temp30
-99.99
Data missing or not taken at this time
Plot5_Avg_Temp30
-99.99
Data missing or not taken at this time
Plot6_Avg_Temp30
-99.99
Data missing or not taken at this time
Avg_Air_Temp
-99.99
Data missing or not taken at this time
P1_Avg_VWC
-99.99
Data missing or not taken at this time
P2_Avg_VWC
-99.99
Data missing or not taken at this time
P3_Avg_VWC
-99.99
Data missing or not taken at this time
P4_Avg_VWC
-99.99
Data missing or not taken at this time
P5_Avg_VWC
-99.99
Data missing or not taken at this time
P6_Avg_VWC
-99.99
Data missing or not taken at this time
Ref_Avg_VWC
-99.99
Data missing or not taken at this time
Warm_Avg_VWC
-99.99
Data missing or not taken at this time
FTC_Avg_VWC
-99.99
Data missing or not taken at this time