Forest Inventory of the DroughtNet plots at the Hubbard Brook Experimental Forest
TITLE
Forest Inventory of the DroughtNet plots at the Hubbard Brook Experimental Forest
PRINCIPAL INVESTIGATOR(s)
Heidi Asbjornsen
University of New Hampshire
270 James Hall
56 College Road
Durham, NH 03824
US
Lindsey Rustad
USDA Forest Service Northern Research Station
271 Mast Road
Durham, NH 03824
US
Pamela Templer
Boston University
Department of Biology
5 Cummington Mall
Boston, MA 02215
US
OTHERS INVOLVED
Katie Jennings
University of New Hampshire
478 Morse Hall
8 College Road
Durham, NH 03824
US
ABSTRACT:
A throughfall removal manipulation is being carried out within a beech, birch and maple forest stand at Hubbard Brook Experimental Forest as part of the Northern Forest DroughtNet project, in collaboration with Climate Change Across Seasons Experiment (CCASE). Two 15 x 15 m plots have a series of troughs covering 50% of the surface area to remove throughfall and reduce soil moisture, in order to simulate a 1st percentile drought based on the long term meteorological record. DBH measurements were recorded for all trees > 10 cm DBH beginning in spring of 2014, and remeasured annually. Drought and control plots will be compared to determine the effect of reduced soil moisture availability on tree growth. This dataset includes measurements from 2014.
KEYWORD SET: Hubbard Brook Ecosystem Study LTER
DBH, drought, ecosystems, forests, HBEF DroughtNet Plots, HBR, Hubbard Brook LTER, species, tree.
KEYWORD SET: LTER Core Research Areas
disturbance.
BEGIN DATE
2014
END DATE
2014
LOCATION
Northern Forest DroughtNet 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
A throughfall removal manipulation is being carried out within a beech, birch and maple forest stand at Hubbard Brook Experimental Forest as part of the Northern Forest DroughtNet project, in collaboration with Climate Change Across Seasons Experiment (CCASE). Two 15 x 15 m plots have a series of troughs covering 50% of the surface area to remove throughfall and reduce soil moisture, in order to simulate a 1st percentile drought based on the long term meteorological record. Drought and control plots will be compared to determine the effect of reduced soil moisture availability on tree growth.
FIELD COLLECTION PROCEDURES
DBH measurements were recorded for all trees > 10 cm DBH beginning in spring of 2014, and are remeasured annually.
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: droughtnet_veg.txt
Description: Tree diameter measurements for the DroughtNet plots at the Hubbard Brook Experimental Forest.
Notes on Data: The original data is located in the Asbjornsen Lab, University of New Hampshire and was updated in December 2015.
ColumnVariableDescriptionUnitsCoded?Missing value label
1SiteName of experimental plotsnoneynone
2TreatmentType of experimental treatmentnoneynone
3PlotPlot numbernoneynone
4TreeTree tag numbernoneynone
5SpeciesFour letter tree species acronymnoneynone
6DateDate measurement was takenYYYY-MM-DDnnone
7DBHDiameter at breast height, in cmcentimeternnone

CODES

Variable: Site
Description:
Site is DroughtNet for all data in this dataset
Variable: Treatment
Code
Description
reference
control plots
drought
water removal plots
Variable: Plot
Description:
A positive number representing an individual plot
Variable: Tree
Description:
A positive number representing an individual tree tag
Variable: Species
SppNum
Species Code
Species/SppNum description
1
ACRU
Red maple (Acer rubrum)
2
FAGR
American beech (Fagus grandifolia)
3
BEPA
White or paper birch (Betula papyrifera)
4
BEAL
Yellow birch (Betula alleghaniensis)
5
PIRU
Red spruce (Picea rubens)
6
POGR
Big-tooth aspen (Populus grandidentata)