Data Package Metadata View Summary

Measurements of gross N cycling rates in the soils of the Ice Storm Experiment (ISE) plots at the Hubbard Brook Experimental Forest

General Information

Data Package:
Local Identifier:	knb-lter-hbr.246.2
Title:	Measurements of gross N cycling rates in the soils of the Ice Storm Experiment (ISE) plots at the Hubbard Brook Experimental Forest
Alternate Identifier:	knb-lter-hbr.246
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	As the climate changes, it is thought that ice storms will begin to occur with increasing frequency. This project evaluates the damage and changes ice storms cause to northern hardwood forests in nutrient cycling. Ten 20x30 meter plots were established in a predominately sugar maple stand, with 4 icing treatments and 2 control plots. This data set includes gross ammonification, gross ammonium consumption, gross nitrification, and gross nitrate consumption monitored in the Ice Storm Experiment plots at the Hubbard Brook Experimental Forest from 2015-2017.
Short Name:	ISE Gross N Cycling
Publication Date:	2019-11-08
Language:	English

Time Period

Begin:

2015-09-01

End:

2017-10-31

People and Organizations
Contact:	Information Manager (Hubbard Brook Ecosystem Study) [ email ]
Creator:	Groffman, Peter M
Creator:	Weitzman, Julie
Creator:	Martel, Lisa

Data Entities
Data Table Name:	HBEF Ice Storm Gross Rate Data.csv
Description:	HBEF Ice Storm Gross Rate Data.csv

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-hbr/246/2/991ce818b8951e544c495bb21ce5034a
Name:	HBEF Ice Storm Gross Rate Data.csv
Description:	HBEF Ice Storm Gross Rate Data.csv
Number of Records:	140
Number of Columns:	12

Table Structure

Object Name:

HBEF_Ice_Storm_Gross_Rate_Data.csv

Size:

8321 byte

Authentication:

2efcf9e4c075cbd4190a0a07ca32c847 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

Project

Date

Year

TrtYr

Season

Treatment

Plot

Horizon

GrossNH4

NH4Cons

GrossNO3

NO3Cons

Column Name:

Project

Date

Year

TrtYr

Season

Treatment

Plot

Horizon

GrossNH4

NH4Cons

GrossNO3

NO3Cons

Definition:

Project name

Sample date

Year

Icing Year

Season sample collected

Icing Treatment

Sample plot location

Soil horizon

Gross ammonification

Gross ammonium consumption

Gross nitrification

Gross nitrate consumption

Storage Type:

string

date

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

Measurement Values Domain:

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	ISE
Definition	Ice Storm Experiment
Source

Format	YYYY-MM-DD
Precision

Format	YYYY
Precision

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0
Definition	Pre-treatment (2015)
Source

Code Definition

Code	1
Definition	Post-treatment, Yr1 (2016)
Source

Code Definition

Code	2
Definition	Post-treatment, Yr2 (2017)
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	F
Definition	Fall
Source

Code Definition

Code	W
Definition	Winter
Source

Code Definition

Code	SP
Definition	Spring
Source

Code Definition

Code	SU
Definition	Summer
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	LOW
Definition	6.4 mm
Source

Code Definition

Code	CONTROL
Definition	0.0 mm
Source

Code Definition

Code	MID
Definition	12.7 mm
Source

Code Definition

Code	MIDx2
Definition	12.7 mm in Year1 & Year2
Source

Code Definition

Code	HIGH
Definition	19 mm
Source

Definition

any text

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	org
Definition	The entire organic horizon: Oi, Oe, and Oa
Source

Code Definition

Code	min
Definition	Mineral soil horizon, beginning below the organic horizon
Source

Unit	milliGramPerKilogramPerDay
Type	real

Unit	milliGramPerKilogramPerDay
Type	real

Unit	milliGramPerKilogramPerDay
Type	real

Unit	milliGramPerKilogramPerDay
Type	real

Missing Value Code:

Code	-9999.99
Expl	Data missing or not taken at this time

Code	-9999.99
Expl	Data missing or not taken at this time

Code	-9999.99
Expl	Data missing or not taken at this time

Code	-9999.99
Expl	Data missing or not taken at this time

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	15N, HBEF ISE Plots, HBR, Hubbard Brook LTER, ice damage, ice storm, immobilization
LTER Network Controlled Vocabulary	15N, ammonium, ecosystems, inorganic nitrogen, isotopes, mineralization, nitrate, nitrite
LTER Network Core Research Areas	disturbance, 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:

Samples were split into organic (composite of Oi, Oe, and Oa soil horizons) and mineral (generally the top 6-10 cm of A soil horizon) soils. Samples were collected prior to any icing treatment in September 2015, and then for 2 years after the icing treatments were initially applied (1st icing: 1/27/16; 2nd icing, only in MIDx2 plots: 1/14/17) in June 2016, August 2016, October 2016, May 2017, August 2017, and November 2017 (i.e. spring, summer, and fall of 2016 and 2017).

Samples were stored at 4°C between sampling and analysis (from less than 1 week to up to 3 weeks). Soils were manually homogenized: all large rocks, roots, and other non-decomposed organic material were removed, and samples were removed, and samples were thoroughly mixed. All samples were held at field moisture before analysis. Soil water content was determined gravimetrically.

Following extraction, all samples were analyzed for inorganic N via flow injection analysis. The respective isotopic ratios of NH4+ and NO3- in the samples before and after incubation were quantified at the U.C. Davis Isotope Lab from prepared diffused acidified disks (Stark and Hart 1996). Blank solutions, as well as spiked solutions with known enrichment and N mass, were diffused along with samples in order to obtain an estimate of the quantity of N contamination, and extraction efficiency, respectively, allowing a correction factor to be applied to samples.

The equations of Kirkham and Bartholomew (1954) as presented in Hart and others (1994), which use data on 14+15N and 15N in the initial and incubated soil samples, and pool sizes of labeled pools, were used to calculate gross rates of N mineralization (here ammonification), nitrification, NH4+ immobilization, and NO3- immobilization. Gross N immobilization was calculated as total inorganic N immobilization (NH4+ + NO3-) minus gross nitrification.

All results are expressed on a per gram of dry soil basis. Values can be converted to a “per area” basis using data on the mass of different soil horizons found elsewhere on the data page of this website.

People and Organizations

Publishers:

Organization:

Hubbard Brook Ecosystem Study

Address:

234 Mirror Lake Road,

North Woodstock, NH 03262 United States

Creators:

Individual:

Peter M Groffman

Email Address:

GroffmanP@caryinstitute.org

Id:

https://orcid.org/0000-0001-8371-6255

Individual:

Julie Weitzman

Email Address:

julie.weitzman@gc.cuny.edu

Id:

https://orcid.org/0000-0002-6554-4776

Individual:	Lisa Martel
Id:	https://orcid.org/0000-0002-0156-4954

Contacts:

Organization:

Hubbard Brook Ecosystem Study

Position:

Information Manager

Address:

234 Mirror Lake Road,

North Woodstock, NH 03262 United States

Email Address:

hbr-im@lternet.edu

Web Address:

https://hubbardbrook.org

Temporal, Geographic and Taxonomic Coverage

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

Time Period

Begin:

2015-09-01

End:

2017-10-31

Geographic Region:

Description:

The Ice Storm Experiment plots located at Hubbard Brook Experimental Forest

Bounding Coordinates:

Northern:	43.9362	Southern:	43.935
Western:	-71.7593	Eastern:	-71.7557

Project

Parent Project Information:

Title:

LTER: Long-term ecological research at the Hubbard Brook Experimental Forest and Collaborative Research: Understanding the Impacts of Ice Storms on Forest Ecosystems of the Northeastern United States

Personnel:

Individual:	Gary Lovett
Role:	principalInvestigator

Individual:	Peter Groffman
Role:	Co-Investigator

Individual:	Timothy Fahey
Role:	principalInvestigator

Individual:	Charles Driscoll
Role:	principalInvestigator

Funding:

Wholly or in part by NSF LTER #1637685 and #1114804 (Fahey, Groffman, Lovett) and NSF #1457675 (Driscoll)

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'abbreviation' = 'mg/Kg/Day'
        |     |     |     |  \___attribute 'id' = 'milliGramPerKilogramPerDay'
        |     |     |     |  \___attribute 'multiplierToSI' = '0.0001'
        |     |     |     |  \___attribute 'name' = 'milliGramPerKilogramPerDay'
        |     |     |     |  \___attribute 'parentSI' = 'gram'
        |     |     |     |  \___attribute 'unitType' = 'mass'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'milligrams per kilogram per day'
        |     |     |     |___text '\n        '
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

Copyright 2024 Environmental Data Initiative. This material is based upon work supported by the National Science Foundation under grants #2223103 and #2223104. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. Please contact us with questions, comments, or for technical assistance regarding this web site or the Environmental Data Initiative. Please read our privacy policy to know what information we collect about you and to understand your privacy rights.

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Data Package Metadata View Summary

Measurements of gross N cycling rates in the soils of the Ice Storm Experiment (ISE) plots at the Hubbard Brook Experimental Forest

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:

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Parent Project Information:

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

Measurements of gross N cycling rates in the soils of the Ice Storm Experiment (ISE) plots at the Hubbard Brook Experimental Forest

+/- 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:

+/- 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