Coarse Litterfall Data at the Hubbard Brook Experimental Forest, 1996 - present
TITLE
Coarse Litterfall Data at the Hubbard Brook Experimental Forest, 1996 - present
PRINCIPAL INVESTIGATOR(s)
Timothy J. Fahey
OTHERS INVOLVED
Cindy Wood
ABSTRACT:
Coarse litterfall (woody litter greater than 2 cm diameter) was collected from cleared plots in the same sites as fine litterfall to quantify total aboveground litterfall in the reference forest. These data are used to calculate aboveground production and forest carbon and nutrient budgets.
KEYWORD SET: Hubbard Brook Ecosystem Study LTER
branch, HBEF Bear Brook Reference Watershed, HBEF Watershed 5, HBR, Hubbard Brook LTER, leaf, litter, tree, twig, vegetation.
KEYWORD SET: LTER Core Research Areas
organic matter.
BEGIN DATE
1996
END DATE
2015
LOCATION
Watershed 5. Co-located with Fine Litterfall Collection sites
West bounding coordinate: -71.739375
East bounding coordinate: -71.731253
North bounding coordinate: 43.957167
South bounding coordinate: 43.948942
Bear Brook Reference Watershed sites. Co-located with Fine Litterfall Collection sites.
West bounding coordinate: -71.743462
East bounding coordinate: -71.735649
North bounding coordinate: 43.957001
South bounding coordinate: 43.949928
Elevation
Minimum: 525
Maximum: 830
(Unit: meter)
DATA DESCRIPTION
Each 6.25 m2 plot was cleared of woody debris in Fall, 1995. Dry weight of coarse litterfall (>2 cm diameter) deposited in the plots is measured each June. Spruce/fir zone plots were established in 2001 and measured in 2002.
SAMPLING DESIGN
Six plots, each 2.5 x 2.5 m (6.26 m2), are located randomly within the large plots where fine litterfall is collected. Locations of the five sample sites were chosen to stratify the sampling by elevation zone. Sites are co-located with fine litter trap sites. Sample plots within the sites are distributed randomly.
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: coarse_litter.txt
Notes on Data: Samples were collected in 1996 and 1997 from all sites. In 1998, no samples were collected from the upper and high elevation plots because of the ice storm. The low and mid sites were collected as usual from 1998-2002. The high and upper sites were re-cleared in Summer 2001 and measured again in 2002. New sites were established in 2001 near the spruce-fir zone throughfall site. The data is physically located at the USDA Forest Service, Durham, NH.
ColumnVariableDescriptionUnitsCoded?Missing value label
1SITEZone where litterfall was collectednoneynone
2PLOTSample plotnoneynone
3YEARYear samples were collectedYYYYnnone
4DRY_WTDry weight of samplegramPerMeterSquaredn
n/s

CODES

Variable: SITE
Code
Description
Lower
Southwest of WS6 weir (525 m elevation)
Mid
West of WS6 trail and lysimeter plot (585 m )
Upper
West of tower site and seep (725 m)
High
West of rain guage 9 (800 m)
SF
Spruce-fir zone, located along WS6 trail (790 m)
Variable: PLOT
Description:
An integer id number of an existent plot. If two plots pertinent to this piece of data, they are in the format plot1/plot2

MISSING VALUE CODES
Variable
Missing Value Code
Code Explanation
DRY_WT
n/s
Not sampled