Data Package Metadata View Summary

Hubbard Brook Nitrogen Oligotrophication (HBNO): Foliar resorption, leaf mass per area, and leaf chemistry of sugar maple and American beech, 2020-2022

General Information

Data Package:

Local Identifier:

knb-lter-hbr.392.3

Title:

Hubbard Brook Nitrogen Oligotrophication (HBNO): Foliar resorption, leaf mass per area, and leaf chemistry of sugar maple and American beech, 2020-2022

Alternate Identifier:

DOI PLACE HOLDER

Abstract:

We quantified nitrogen (N) resorption of the two dominant tree species of northern hardwood forests along an elevation gradient using 14 sites at Hubbard Brook Experimental Forest, NH. For these calculations, we also quantified the leaf mass per area for both species, sugar maple and American beech. The original data before averaging for combining with chemistry data available in an earlier revision of this dataset. Foliar N of sugar maple increased, and N resorption proficiency (NRP) decreased with increasing elevation. In contrast, foliar N and NRP of American beech did not vary significantly with elevation, suggesting that the mechanisms driving patterns of N resorption were distinct between these co-occurring species. While both species exhibited strong correlations between resorption efficiency of C and N, resorption of both elements was much greater for beech than maple.

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.

Publication Date:

2024-12-13

For more information:
Visit:	DOI PLACE HOLDER

Time Period

Begin:

2020

End:

2022

People and Organizations
Contact:	Information Manager, Hubbard Brook LTER [ email ]
Creator:	Fahey, Timothy J (Cornell University)
Creator:	Cleavitt, Natalie L (Cornell University)
Creator:	Templer, Pamela H (Boston University)

Data Entities
Data Table Name:	HBNO_leaf_NC
Description:	foliar resorption
Other Name:	HBNO_FIG1_MAP
Description:	Map of the HBNO study plots

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-hbr/392/3/02735d379e8b3d8b319911bcc0ab8518
Name:	HBNO_leaf_NC
Description:	foliar resorption
Number of Records:	126
Number of Columns:	16

Table Structure

Object Name:

HBNO_leaf_NC.csv

Size:

19481 byte

Authentication:

1c46357eed3e9914ee94a252aba61b7e Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

year

Site

elevation

Species

pctNfresh

pctCfresh

C:Nfresh

LMAfresh

NRP

pctCsenesce

C:Nsenesce

LMAsenesce

MCLF

correctedLiiterN

NRE

CRE

Column Name:

year

Site

elevation

Species

pctNfresh

pctCfresh

C:Nfresh

LMAfresh

NRP

pctCsenesce

C:Nsenesce

LMAsenesce

MCLF

correctedLiiterN

NRE

CRE

Definition:

year sample was collected: 2020, 2021 or 2022

14 study sites along an elevation gradient in the Hubbard Brook valley

Elevation of the sites in meters a.s.l.

sugar maple or American beech

percent of nitrogen as dry weight in fresh leaves

percent of carbon as dry weight in fresh leaves

percent of carbon over percent of nitrogen in fresh leaves

leaf mass area of fresh leaves shot down from the canopy

percent of nitrogen as dry weight in senesced leaves

percent of carbon as dry weight in senesced leaves

percent of carbon over percent of nitrogen in senesced leaves

leaf mass area of fallen leaves

mass loss correction factor: 1 - ((LMA foliage - LMA litter)/LMA foliage)

(litterN * MLCF)

(((foliageN - (litterN * MLCF)) / foliageN)) * 100

(((foliageC - (litterC * MLCF)) / foliageC)) * 100

External Measurement Definition, Link:

has unit Meter

has unit Percent

has unit Unitless

has unit Gram Per Square Centimeter

has unit Percent

has unit Unitless

has unit Gram Per Square Centimeter

has unit Unitless

has unit Percent

Storage Type:

dateTime

string

float

string

float

Measurement Type:

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Format	YYYY
Precision

Definition

text

Unit	meter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	American Beech
Definition	American beech (Fagus grandifolia Ehrh.)
Source

Code Definition

Code	Sugar Maple
Definition	Sugar maple (Acer saccharum Marsh.)
Source

Unit	percent
Type	real

Unit	percent
Type	real

Unit	dimensionless
Type	real

Unit	gramPercentimeterSquared
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	dimensionless
Type	real

Unit	gramPercentimeterSquared
Type	real

Unit	dimensionless
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Missing Value Code:

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Non-Categorized Data Resource

Name:

HBNO_FIG1_MAP

Entity Type:

image/tiff

Description:

Map of the HBNO study plots

Physical Structure Description:

Object Name:

HBNO_FIG1_MAP.tiff

Size:

4935916 byte

Authentication:

ba1cde745d8cb9edfedc1907ef680e52 Calculated By MD5

Externally Defined Format:

Format Name:

image/tiff

Data:

https://pasta-s.lternet.edu/package/data/eml/knb-lter-hbr/392/3/0256e2e4ff6b9842c0e2d004ac77142c

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:
HBES Vocabulary	HBR, Hubbard Brook Ecosystem Study, Hubbard Brook Experimental Forest, Hubbard Brook LTER, White Mountain National Forest, resorption proficiency, resorption efficiency
LTER Controlled Vocabulary	climate change, ecosystems, forests, nitrogen, carbon
LTER Core Research Area	disturbance patterns, inorganic nutrients, organic matter

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:

Fourteen sampling plots were established along the elevation gradient from 395 to 780 m a.s.l. in the HBEF. The plots were chosen for canopy dominance by the two focal species, sugar maple and American beech, and they were distributed on well-drained soils and moderate slopes (< 15%) in varying topographic positions. At each plot two healthy canopy trees (co-dominant) of each species were chosen for foliage and litter sampling. The original leaf mass per area file more completely keeps this sampling regime intact while the chemistry and resorption values used an average value fr each tree species per site. In early August of each year (2020 for sugar maple only and 2021-2022 for both species) two sunlit branches from mid-to-upper canopy of each tree were sampled using a shotgun. Representative leaves from each branch were collected and divided into two groups, one for chemical analysis and the other for leaf area and mass determinations; the former were stored in paper bags and the latter were mounted in a plant press until dry.

Litter baskets lined with nylon screening and suspended above the ground were positioned beneath the canopy of each sample tree to collect leaf litter during fall senescence. Senesced leaves were collected weekly starting with first leaf fall in early September at the highest elevation sites and ending in early November with last leaf off at the lowest elevation sites. Leaves were bulked in paper bags to air dry until the collections were complete and ready for subsampling. Samples for mass and area determinations were rehydrated before being stored in a plant press. Fresh leaves and leaf litter for chemical analysis were handled at all times with nitrile gloves.

Pressed leaves were measured for area either on a calibrated LI-2000 leaf area meter or with ImageJ (https://imagej.net/ij/index.html) following scanning. For the leaf mass and area sampling in both 2021 and 2022, 25 fresh leaves and 40 senesced leaves of each species were measured per plot. Samples were dried at 60°C to constant mass and weighed to +/- 1 mg.

Litterfall and foliage samples for chemical analysis were dried at 50 oC for a minimum of 72 hours, then ground to a fine powder using a Wiley Mill. Subsamples of 2 mg were weighed using a microbalance, and samples were analyzed on an isotope ratio mass spectrometer for C and N.

People and Organizations

Publishers:

Organization:

Environmental Data Initiative

Email Address:

info@edirepository.org

Web Address:

https://edirepository.org

Id:

https://ror.org/0330j0z60

Creators:

Individual:

Timothy J Fahey

Organization:

Cornell University

Address:

Department of Natural Resource,

Cornell University,

Ithaca, NY 14853 USA

Email Address:

tjf5@cornell.edu

Id:

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

Id:

https://ror.org/05bnh6r87

Individual:

Natalie L Cleavitt

Organization:

Cornell University

Email Address:

nlc4@cornell.edu

Id:

orcid logo https://orcid.org/0000-0003-0425-2486

Id:

https://ror.org/05bnh6r87

Individual:

Pamela H Templer

Organization:

Boston University

Address:

Department of Biology, Boston University,

5 Cummington Street,

Boston, MA 02215

Email Address:

ptempler@bu.edu

Id:

https://orcid.org/0000-0002-6570-3837

Id:

https://ror.org/05qwgg493

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

Temporal, Geographic and Taxonomic Coverage

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

Time Period

Begin:

2020

End:

2022

Sampling Site:

Description:

IL1: Intensive Low Elevation Plot 1

Site Coordinates:

Longitude (degree):

-71.71479424

Latitude (degree):

43.94617659

Sampling Site:

Description:

IL2: Intensive Low Elevation Plot 2

Site Coordinates:

Longitude (degree):

-71.72060047

Latitude (degree):

43.94807308

Sampling Site:

Description:

IL3: Intensive Low Elevation Plot 3

Site Coordinates:

Longitude (degree):

-71.73064174

Latitude (degree):

43.95019236

Sampling Site:

Description:

IH1: Intensive High Elevation Plot 1

Site Coordinates:

Longitude (degree):

-71.7684914

Latitude (degree):

43.93415543

Sampling Site:

Description:

IH2: Intensive High Elevation Plot 2.

Site Coordinates:

Longitude (degree):

-71.76717913

Latitude (degree):

43.93218854

Sampling Site:

Description:

IH3: Intensive High Elevation Plot 3

Site Coordinates:

Longitude (degree):

-71.76180633

Latitude (degree):

43.93077007

Sampling Site:

Description:

E1: Extensive Plot 1

Site Coordinates:

Longitude (degree):

-71.77291084

Latitude (degree):

43.92738579

Sampling Site:

Description:

E2: Extensive Plot 2

Site Coordinates:

Longitude (degree):

-71.77643367

Latitude (degree):

43.92305067

Sampling Site:

Description:

E3: Extensive Plot 3

Site Coordinates:

Longitude (degree):

-71.77745584

Latitude (degree):

43.91985666

Sampling Site:

Description:

E7: Extensive Plot 7

Site Coordinates:

Longitude (degree):

-71.71862125

Latitude (degree):

43.95490408

Sampling Site:

Description:

E8: Extensive Plot 8

Site Coordinates:

Longitude (degree):

-71.71984434

Latitude (degree):

43.95885229

Sampling Site:

Description:

E9: Extensive Plot 9

Site Coordinates:

Longitude (degree):

-71.72161276

Latitude (degree):

43.96068944

Sampling Site:

Description:

Extensive Plot 11-B

Site Coordinates:

Longitude (degree):

-71.74247222

Latitude (degree):

43.95552778

Sampling Site:

Description:

E12: Extensive Plot 12

Site Coordinates:

Longitude (degree):

-71.74066667

Latitude (degree):

43.95311111

Geographic Region:

Description:

Hubbard Brook Experimental Forest

Bounding Coordinates:

Northern:	43.959	Southern:	43.914
Western:	-71.8062	Eastern:	-71.7022

Taxonomic Range:

Classification:

Rank Name:

Kingdom

Rank Value:

Viridiplantae

Common Name:

green plants

Identifer:

National Center for Biotechnology Information - Taxonomy (NCBI)
Info for ID: 33090 (Viridiplantae)

Classification:

Rank Name:

Phylum

Rank Value:

Streptophyta

Identifer:

National Center for Biotechnology Information - Taxonomy (NCBI)
Info for ID: 35493 (Streptophyta)

Classification:

Rank Name:

Subphylum

Rank Value:

Streptophytina

Identifer:

National Center for Biotechnology Information - Taxonomy (NCBI)
Info for ID: 131221 (Streptophytina)

Classification:

Rank Name:

Class

Rank Value:

Magnoliopsida

Common Name:

flowering plants

Identifer:

National Center for Biotechnology Information - Taxonomy (NCBI)
Info for ID: 3398 (Magnoliopsida)

Classification:

Rank Name:

Order

Rank Value:

Sapindales

Identifer:

National Center for Biotechnology Information - Taxonomy (NCBI)
Info for ID: 41937 (Sapindales)

Classification:

Rank Name:

Family

Rank Value:

Sapindaceae

Common Name:

soapberry family

Identifer:

National Center for Biotechnology Information - Taxonomy (NCBI)
Info for ID: 23672 (Sapindaceae)

Classification:

Rank Name:

Subfamily

Rank Value:

Hippocastanoideae

Identifer:

National Center for Biotechnology Information - Taxonomy (NCBI)
Info for ID: 1977916 (Hippocastanoideae)

Classification:

Rank Name:

Genus

Rank Value:

Acer

Common Name:

maple trees

Identifer:

National Center for Biotechnology Information - Taxonomy (NCBI)
Info for ID: 4022 (Acer)

Classification:

Rank Name:	Species
Rank Value:	Acer saccharum
Common Name:	sugar maple
Identifer:	National Center for Biotechnology Information - Taxonomy (NCBI) Info for ID: 4024 (Acer saccharum)

Taxonomic Range:

Classification:

Rank Name:

Kingdom

Rank Value:

Viridiplantae

Common Name:

green plants

Identifer:

National Center for Biotechnology Information - Taxonomy (NCBI)
Info for ID: 33090 (Viridiplantae)

Classification:

Rank Name:

Phylum

Rank Value:

Streptophyta

Identifer:

National Center for Biotechnology Information - Taxonomy (NCBI)
Info for ID: 35493 (Streptophyta)

Classification:

Rank Name:

Subphylum

Rank Value:

Streptophytina

Identifer:

National Center for Biotechnology Information - Taxonomy (NCBI)
Info for ID: 131221 (Streptophytina)

Classification:

Rank Name:

Class

Rank Value:

Magnoliopsida

Common Name:

flowering plants

Identifer:

National Center for Biotechnology Information - Taxonomy (NCBI)
Info for ID: 3398 (Magnoliopsida)

Classification:

Rank Name:

Order

Rank Value:

Fagales

Identifer:

National Center for Biotechnology Information - Taxonomy (NCBI)
Info for ID: 3502 (Fagales)

Classification:

Rank Name:

Family

Rank Value:

Fagaceae

Common Name:

beech family

Identifer:

National Center for Biotechnology Information - Taxonomy (NCBI)
Info for ID: 3503 (Fagaceae)

Classification:

Rank Name:

Genus

Rank Value:

Fagus

Common Name:

beech trees

Identifer:

National Center for Biotechnology Information - Taxonomy (NCBI)
Info for ID: 21024 (Fagus)

Classification:

Rank Name:	Species
Rank Value:	Fagus grandifolia
Common Name:	American beech
Identifer:	National Center for Biotechnology Information - Taxonomy (NCBI) Info for ID: 60423 (Fagus grandifolia)

Project

Parent Project Information:

Title:

Collaborative Research: Changing Seasonality and Nitrogen Reductions in the Northern Hardwood Forest

Personnel:

Individual:

Timothy J Fahey

Organization:

Cornell University

Address:

Department of Natural Resource,

Cornell University,

Ithaca, NY 14853 USA

Email Address:

tjf5@cornell.edu

Id:

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

Id:

https://ror.org/05bnh6r87

Role:

Principal Investigator

Additional Award Information:

Funder:

National Science Foundation

Funder ID:

https://ror.org/021nxhr62

Number:

2020440

Title:

Collaborative Research: Changing Seasonality and Nitrogen Reductions in the Northern Hardwood Forest

URL:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=2020440

Maintenance

Maintenance:

Description:

knb-lter-hbr.392.2; publication of completed dataset

knb-lter-hbr.392.1; initial dataset publication

Frequency:

notPlanned

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n      '
        |___element 'metadata'
        |     |___text '\n         '
        |     |___element 'emlEditor'
        |     |        \___attribute 'app' = 'ezEML'
        |     |        \___attribute 'release' = '2024.10.30'
        |     |___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.

EDI is a collaboration between the University of New Mexico and the University of Wisconsin – Madison, Center for Limnology:

Data Package Metadata View Summary

Hubbard Brook Nitrogen Oligotrophication (HBNO): Foliar resorption, leaf mass per area, and leaf chemistry of sugar maple and American beech, 2020-2022

Data Entities

Data Table

Non-Categorized Data Resource

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:

Maintenance

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

Hubbard Brook Nitrogen Oligotrophication (HBNO): Foliar resorption, leaf mass per area, and leaf chemistry of sugar maple and American beech, 2020-2022

+/- Data Entities

Data Table

Non-Categorized Data Resource

+/- 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:

+/- Maintenance

+/- Additional Metadata

Data Entities

Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Maintenance

Additional Metadata