Data Package Metadata View Summary

Fine Root Data at the Hubbard Brook Experimental Forest, 1998 and 2013 collections

General Information

Data Package:
Local Identifier:	knb-lter-hbr.155.1
Title:	Fine Root Data at the Hubbard Brook Experimental Forest, 1998 and 2013 collections
Alternate Identifier:	hbr0155
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	We restored calcium to soils of a forested watershed at Hubbard Brook and measured the response of fine root biomass fourteen years after treatment. Fine root samples were collected in Watershed 1 and the Bear Brook Watershed reference forest, located to the west of Watershed 6, in 1998 (pre-Ca treatment) and in 2013. In this northern hardwood forest fine root (< 1 mm diameter) biomass declined significantly in the Ca addition treatment relative to pretreatment and reference forest conditions. The decline was greatest in the high-elevation hardwood zone of the watershed where soils are thinnest and most base poor. In that zone fine roots were distributed more shallowly after treatment than for reference conditions. We suggest that relatively higher tree C allocation to roots contributes to depressed aboveground productivity in acidified northern hardwood forest ecosystems.
Short Name:	Fine Root
Publication Date:	2019-03-25

Time Period

Begin:

1998

End:

2013

People and Organizations
Contact:	Information Manager, Hubbard Brook LTER [ email ]
Creator:	Fahey, Tim (Department of Natural Resources, Cornell University)

Data Entities
Data Table Name:	root_biomass_W1_BB
Description:	Fine root data in two watersheds at the Hubbard Brook Experimental Forest

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-hbr/155/1/f16eaaa7bb42dcc4b16f386c74d65f58
Name:	root_biomass_W1_BB
Description:	Fine root data in two watersheds at the Hubbard Brook Experimental Forest
Additional Info:	Data hard copies are located at the USDA Forest Service, Durham, NH and were last updated in 2013.
Number of Columns:	9

Table Structure

Object Name:

root_biomass_W1_BB.txt

Character Encoding:

ASCII

Text Format:

Number of Header Lines:

Number of Foot Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:

0x2c

Table Column Descriptions

Column Name:

Date

Treatment

Site

Elevation

Depth

Plot

Core

RootMass0-1mm

RootMass1-2mm

Definition:

Sample collection date

Indicates if collection site received Calcium additions

Location where litterfall was collected

Elevation

Depoth of soil horizon

Plot number where core was collected

A unique number for identifying core samples

Total mass of fine roots in size class <1mm in diameter.

Total mass of fine roots in size class 1 - 2mm in diameter.

Storage Type:

Measurement Type:

dateTime

nominal

ordinal

nominal

ratio

Measurement Values Domain:

Format	YYYY-MM-DD
Precision	1 day

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	Ca
Definition	Calcium addition (W1 only)
Source

Code Definition

Code	noCa
Definition	No calcium addition
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	BB
Definition	Bear Brook Watershed site
Source

Code Definition

Code	W1
Definition	Watershed 1 sites
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	Low
Definition	Low elevation
Source

Code Definition

Code	Mid
Definition	Mid elevation
Source

Code Definition

Code	SF
Definition	Upper elevation Spruce-Fir zone
Source

Code Definition

Code	High
Definition	High elevation
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	FF+0-5
Definition	Forest floor and top 5 cm of mineral soil.
Source

Code Definition

Code	5-10
Definition	Mineral soil from 5 to 10 cm in depth.
Source

Code Definition

Code	10-15
Definition	Mineral soil from 10 to 15 cm in depth.
Source

Code Definition

Code	15-20
Definition	Mineral soil from 15 to 20 cm in depth.
Source

Definition

An integer number representing a plot

Definition

An integer number representing a unique soil sample

Unit	gramPerMeterSquared
Precision	0.01
Type	real

Unit	gramPerMeterSquared
Precision	0.01
Type	real

Missing Value Code:

Code	-999.99
Expl	data missing or not collected

Code	-999.99
Expl	data missing or not collected

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:
Hubbard Brook Ecosystem Study LTER	calcium, fine roots, forests, HBEF Watershed 1, HBEF Bear Brook Watershed, HBR, Hubbard Brook LTER, roots, root biomass, watersheds
LTER Core Research Areas	primary production

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:

LOCATION DESCRIPTIONS

Fine Root samples were collected at 2 different locations.

Watershed 1 Sites:

These sites are located along the W1 trail at the elevations provided below. There are ten collectors per site arranged along two transects, with five 0.097 m2 collectors on each transect. Collections on W1 began in 1997.

Low, hardwood – elevation 520 m

Mid, hardwood – elevation 600 m

Upper, hardwood – elevation 710 m

High, spruce/fir – elevation 740 m

Bear Brook Sites:

West of W6: 0.097 m2 collectors are randomly situated along three 100 m long transects (325 degrees) which are approximately 25 m apart. Originally 20 collectors per elevation were set out; there are currently twelve per elevation at all but the high elevation where fifteen remain.

Low, hardwood - southwest of W6 weir, west of tower platform - elevation 525 m

Mid, hardwood - west of Throughfall collector sites - elevation 585 m

Upper, hardwood - west of tower site and seep - elevation 725 m

High, hardwood - west of rain gauge 9 - elevation 830 m

SAMPLING DESIGN

In August 1998 (prior to Ca treatment on WS1) soil cores were collected adjacent to each of the 36 litterfall traps in WS1 and in the Bear Brook reference forest plots. A split PVC corer of 5 cm diameter was hammered into the soil to a depth of 20 cm as measured from the top of the mineral soil. Locations occupied by boulders and root crowns were avoided. Soil cores were divided in the field into four layers: forest floor organic horizon plus 0-5 cm mineral soil and 5-10, 10-15, and 15-20 cm mineral soil. The same field procedure was repeated in August 2013, fourteen years after treatment, with cores again paired with litterfall traps.

Soil samples were returned to the laboratory and stored frozen until processed for root biomass. Roots were hand sorted from soil cores into two diameter classes (< 1 mm, 1-2 mm); live roots were recognized by color and tensile strength and retained for dry weight determination. Roots were dried to constant mass at 70 degrees celcius and weighed to +/- 0.001 g. The fine root biomass data were computed on a grams per m2 basis (forest floor plus 0-20 cm mineral soil depth) after taking into account the estimated area of each sampling plot that was occupied by boulders and root crowns and hence was not sampled by root coring. A line intercept method was applied to determine this fraction. (Fahey et al. 2005).

Citation:

Title:

Fine Root Biomass Declined in Response to Restoration of Soil Calcium in a Northern Hardwood Forest

Publication Date:

2016

Author(s):

Individual:

T.J. Fahey

Individual:

A.K. Heinz

Individual:

J.J. Battles

Individual:

M.C. Fisk

Individual:

C.T. Driscoll

Individual:

J.D. Blum

Individual:

C.E. Johnson

Article:

Journal:

Can. J. For. Res.

Volume:

Page Range:

In Press

People and Organizations

Publishers:

Organization:

Hubbard Brook Experimental Forest LTER

Address:

234 Mirror Lake Road,

North Woodstock, NH 03262 USA

Phone:

(603) 726-8902 (voice)

Web Address:

http://www.hubbardbrook.org

Creators:

Individual:

Tim Fahey

Organization:

Department of Natural Resources, Cornell University

Address:

104A Bruckner Hall,

Ithaca, NY 14853 USA

Id:

https://orcid.org/0000-0003-1283-1162

Contacts:

Position:

Information Manager, Hubbard Brook LTER

Address:

234 Mirror Lake Road,

North Woodstock, NH 03262 USA

Phone:

(603) 726-8902 (voice)

Email Address:

hbr-im@lternet.edu

Web Address:

http://www.hubbardbrook.org

Metadata Providers:

Organization:

Hubbard Brook Experimental Forest LTER

Address:

234 Mirror Lake Road,

North Woodstock, NH 03262 USA

Phone:

Phone: (603) 726-8902 (voice)

Web Address:

http://www.hubbardbrook.org

Temporal, Geographic and Taxonomic Coverage

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

Time Period

Begin:

1998

End:

2013

Geographic Region:

Description:

Watershed 1 sites

Bounding Coordinates:

Northern:	43.959356	Southern:	43.952121
Western:	-71.730866	Eastern:	-71.725832
Altitude Minimum:	488	Altitude Maximum:	747

Geographic Region:

Description:

Bear Brook sites

Bounding Coordinates:

Northern:	43.957001	Southern:	43.949928
Western:	-71.743462	Eastern:	-71.735649
Altitude Minimum:	525	Altitude Maximum:	830

Project

Parent Project Information:

Title:

Hubbard Brook Longterm Ecological Research: Fine root study

Personnel:

Individual:	Timothy Fahey
Role:	principalInvestigator

Funding:

Wholly or in part by NSF awards #9810221, #0423259 and #1114804

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList' in ns 'http://www.xml-cml.org/schema/stmml-1.1' ('stmml:unitList')
        |     |     |___text '\n        '
        |     |     |___element 'unit' in ns 'http://www.xml-cml.org/schema/stmml-1.1' ('stmml:unit')
        |     |     |     |  \___attribute 'abbreviation' = 'g/m²'
        |     |     |     |  \___attribute 'constantToSI' = '0'
        |     |     |     |  \___attribute 'id' = 'gramPerMeterSquared'
        |     |     |     |  \___attribute 'multiplierToSI' = '0.001'
        |     |     |     |  \___attribute 'name' = 'gramPerMeterSquared'
        |     |     |     |  \___attribute 'parentSI' = 'kilogramsPerSquareMeter'
        |     |     |     |  \___attribute 'unitType' = 'arealMassDensity'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description' in ns 'http://www.xml-cml.org/schema/stmml-1.1' ('stmml:description')
        |     |     |     |     |___text 'grams per square meter'
        |     |     |     |___text '\n        '
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

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Data Package Metadata View Summary

Fine Root Data at the Hubbard Brook Experimental Forest, 1998 and 2013 collections

Data Entities

Data Table

Data Package Usage Rights

Keywords

Methods and Protocols

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

LOCATION DESCRIPTIONS

Watershed 1 Sites:

Bear Brook Sites:

SAMPLING DESIGN

Author(s):

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Parent Project Information:

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

Fine Root Data at the Hubbard Brook Experimental Forest, 1998 and 2013 collections

+/- Data Entities

Data Table

+/- Data Package Usage Rights

+/- Keywords

+/- Methods and Protocols

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

LOCATION DESCRIPTIONS

Watershed 1 Sites:

Bear Brook Sites:

SAMPLING DESIGN

Author(s):

+/- People and Organizations

+/- Temporal, Geographic and Taxonomic Coverage

+/- Project

Parent Project Information:

+/- Additional Metadata

Data Entities

Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Additional Metadata