Data Package Metadata View Summary

Shrub Growth, NPP, and Nitrogen Assimilation for Two Years in an Alberta Peatland Subjected to Increasing Nitrogen Deposition, 2014-2015

General Information

Data Package:
Local Identifier:	edi.259.3
Title:	Shrub Growth, NPP, and Nitrogen Assimilation for Two Years in an Alberta Peatland Subjected to Increasing Nitrogen Deposition, 2014-2015
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	Development of the oil sands has led to increasing atmospheric N deposition, with values as high as 17 kg N ha^-1 yr^-1; regional background levels <2 kg N ha^-1 yr^-1. Bogs, being ombrotrophic, may be especially susceptible to increasing N deposition. To examine responses to N deposition, over five years, we experimentally applied N (as NH₄NO₃) to a bog near Mariana Lakes, Alberta, at rates of 0, 5, 10, 15, 20, and 25 kg N ha^-1 yr^-1, plus controls (no water or N addition). In July of each year, we collected new growth of the three shrub species, returned them to the lab, and analyzed them. Non-destructive measurement of aboveground NPP for the three dominant shrub species, Andromeda polifolia, Chamaedaphne calyculata, and Rhododendron groenlandicum was based on allometric equations developed. Results for species were varied, however, water addition alone had no significant effect on NPP for any of the species or for the dominant shrubs combined in either 2014 or 2015 (p >= 0.47). The mass of newly produced shoot segments for Chamaedaphne calyculata, Andromeda polifolia, Rhododendron groenlandicum, and these three dominant shrubs combined all increased with increasing N input (Fig. 7A-D). As N input increased, the number of newly produced shoots (vegetative buds m^-2) increased linearly for A. polifolia and the three shrub species combined. The number of newly produced shoots increased up to 16.6 ± 2.5 kg N ha^-1 yr^-1 and then decreased for C. calyculata and was unaffected for R. groenlandicum (Fig. 7E-H). Shrub growth response to increased N could lead to a shading out of the underlayer of mosses changing the bog and potentially compromising its structure and function.
Publication Date:	2019-01-10

Time Period

Begin:

2014-07-01

End:

2015-07-01

People and Organizations
Contact:	Wieder, Kelman R (Villanova University) [ email ]
Creator:	Wieder, Kelman R (Villanova University)
Creator:	Vitt, Dale H (Southern Illinois University)
Creator:	Vile, Melanie A (Villanova University)
Creator:	Graham, Jeremy A (Southern Illinois University)
Creator:	Hartsock, Jeremy A (Southern Illinois University)
Creator:	Fillingim, Hope (Villanova University)
Creator:	House, Melissa (Southern Illinois University)
Creator:	Quinn, James C (Villanova University)
Creator:	Scott, Kimberli D (Villanova University)
Creator:	Petix, Meaghan (Southern Illinois University)
Creator:	McMillen, Kelly J (Villanova University)

Data Entities
Data Table Name:	Shrub_growth_data.csv
Description:	Shrub Growth Data

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/259/3/9c143c2a07426e102ba26cd90a56d09f
Name:	Shrub_growth_data.csv
Description:	Shrub Growth Data
Number of Records:	42
Number of Columns:	19

Table Structure

Object Name:

Shrub_growth_data.csv

Size:

4804 byte

Authentication:

d9b15083d9ad6b778206aca73f9b6a20 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:

Table Column Descriptions

Column Name:

YEAR

NOMINAL_N_TREATMENT

ARM

Andromeda_polifolia_new_segment_mass

Andromeda_polifolia_new_segment_density

Andromeda_polifolia_net_primary_production

Andromeda_polifolia_N_assimilation

Chamaedaphne_calyculata_new_segment_mass

Chamaedaphne_calyculata_new_segment_density

Chamaedaphne_calyculata_net_primary_production

Chamaedaphne_calyculata_N_assimilation

Rhododendron_groenlandicum_new_segment_mass

Rhododendron_groenlandicum_new_segment_density

Rhododendron_groenlandicum_net_primary_production

Rhododendron_groenlandicum_N_assimilation

A_polifolia_and_C_calyculata_R_groenlandicum_new_segment_mass

A_polifolia_and_C_calyculata_and_R_groenlandicum_new_segment_density

A_polifolia_and_C_calyculata_and_R_groenlandicum_net_primary_production

A_polifolia_and_C_calyculata_and_R_groenlandicum_N_assimilation

Definition:

Year of growth: 2011-2015

Field experimental N treatments were made with 8 applications per plot per year between mid May and mid August of each year

Experimental plots were located along 3 arms; each arm had one replicate each of 8 N treatments

Dried mass of new growth segments of Andromeda polifolia

Number of new growth segments of A. polifolia counted in each plot per meter squared

Plot level net primary production calculated as the product of the mean mass per growth segment and average number of segments per area

Nitrogen assimilated into plant tissue on a per area, per year basis

Dried mass of new growth segments of C. Calyculata

All new growth segments of C. Calyculata counted in plot and reported as per meter

Plot level net primary production calculated as the product of the mean mass per growth segment and average number of segments per area production calculated as the product of the mean mass per growth segment and average number of segments per area

Nitrogen assimilated into plant tissue on a per area, per year basis

Dried mass of new growth segments of R. groenlandicum

All new growth segments of R. groenlandicum counted in plot and reported as per meter

Plot level net primary production of R. groenlandicum calculated as the product of the mean mass per growth segment and average number of segments per area

Nitrogen assimilated into plant tissue of R. groenlandicum on a per area, per year basis

Dried mass of new growth segments of A. polifolia, C. calyculata, and R. groenlandicum

All new growth segments of A. polifolia, C. calyculata, and R. groenlandicum counted in plot and reported as per meter

Plot level net primary production of A. polifolia, C. calyculata, and R. groenlandicum calculated as the product of the mean mass per growth segment and average number of segments per area

Sum of Nitrogen assimilated into plant tissue of A. polifolia, C. calyculata, and R. groenlandicum on a per area, per year basis

Storage Type:

date

string

float

Measurement Type:

dateTime

nominal

ratio

Measurement Values Domain:

Format	YYYY
Precision

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	C
Definition	Control, no water, no N added
Source

Code Definition

Code	0
Definition	0 kg N/ha/yr added as NH4NO3
Source

Code Definition

Code	10
Definition	10 kg N/ha/yr added as NH4NO3
Source

Code Definition

Code	15
Definition	15 kg N/ha/yr added as NH4NO3
Source

Code Definition

Code	20
Definition	20 kg N/ha/yr added as NH4NO3
Source

Code Definition

Code	25
Definition	25 kg N/ha/yr added as NH4NO3
Source

Code Definition

Code	5
Definition	5 kg N/ha/yr added as NH4NO3
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	1
Definition	Arm 1
Source

Code Definition

Code	2
Definition	Arm 2
Source

Code Definition

Code	3
Definition	Arm 3
Source

Unit	gram
Type	real
Min	0.06
Max	0.2

Unit	numberPerMeterSquared
Type	real
Min	14.9
Max	134.7

Unit	gramsPerMeterSquaredPerYear
Type	real
Min	1.09
Max	20.2

Unit	gramsPerMeterSquaredPerYear
Type	real
Min	0.18
Max	3.01

Unit	gram
Type	real
Min	0.08
Max	0.24

Unit	numberPerMeterSquared
Type	real
Min	9
Max	172.1

Unit	gramsPerMeterSquaredPerYear
Type	real
Min	1.56
Max	19.16

Unit	gramsPerMeterSquaredPerYear
Type	real
Min	0.29
Max	3.56

Unit	gram
Type	real
Min	0.06
Max	0.19

Unit	numberPerMeterSquared
Type	real
Min	11.3
Max	162.8

Unit	gramsPerMeterSquaredPerYear
Type	real
Min	1.49
Max	24.83

Unit	gramsPerMeterSquaredPerYear
Type	real
Min	0.21
Max	4.13

Unit	gram
Type	real
Min	0.23
Max	0.51

Unit	numberPerMeterSquared
Type	real
Min	118.2
Max	333.5

Unit	gramsPerMeterSquaredPerYear
Type	real
Min	11.14
Max	50.48

Unit	gramsPerMeterSquaredPerYear
Type	real
Min	1.64
Max	8.74

Missing Value Code:

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Code	-99999
Expl	Missing value

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Package Usage Rights

This data package is released to the “public domain” under Creative Commons CC0 1.0 “No Rights Reserved” (see: https://creativecommons.org/publicdomain/zero/1.0/). It is considered professional etiquette to provide attribution of the original work if this data package is shared in whole or by individual components. A generic citation is provided for this data package on the website https://portal.edirepository.org (herein “website”) in the summary metadata page. Communication (and collaboration) with the creators of this data package is recommended to prevent duplicate research or publication. This data package (and its components) is made available “as is” and with no warranty of accuracy or fitness for use. The creators of this data package and the website shall not be liable for any damages resulting from misinterpretation or misuse of the data package or its components. Periodic updates of this data package may be available from the website. Thank you.

Keywords

By Thesaurus:
(No thesaurus)	Villanova Peatland Biogeochemistry Group, shoot growth
LTER Controlled Vocabulary	bogs, shrubs, vascular plant, nitrogen, net primary production, growth

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:

Non-destructive measurement of aboveground NPP for the three dominant shrub species, Andromeda polifolia, Chamaedaphne calyculata, and Rhododendron groenlandicum was based on allometric equations developed after destructively sampling 50 new growth segments (shoots with leaves), thereby collecting all mass from the most recent bud scar collected in late July 2014, for each of the three species. For each growth segment, we measured total length (mm), counted the number of leaves, measured the length and width of each leaf (mm), and dried each of the growth segments at 55 C for 5 days before weighing. From these measurements, for each species, we developed an allometric equation that gave the best linear fit to the measured mass per growth segment (MPS; mg segment-1). These allometric equations (all significant, p < 0.01) are for A. polifolia:

MPS = 0.646xSqrt(0.5xLLAx0.5xLLWxπxSLxLPS) - 17.2; R² = 0.86,

for C. calyculata:

MPS = 0.523xSqrt(0.5xLLAx0.5xLLWxπxSLxLPS) - 20.0; R² = 0.92,

and for R. groenlandicum:

MPS = 0.712xSqrt(0.5xLLAx0.5xLLWxπxSLxLPS) - 10.0; R² = 0.85,

where LLA is the average length of leaves per segment (mm), LLW is the average width of leaves per segment (mm), SL is segment length (cm), and LPS is the number of leaves per segment.

In the second week of June 2014, we determined the density of the new growth segments (segments m^-2) by counting all the new growth segments for each of the selected species in each 7.2 m² plot. In the last week of July 2014, we measured new growth segment lengths, number of leaves, and leaf dimensions for 5 individual segments of each of the species per plot, and calculated MPS. We calculated plot-level aboveground NPP (g m^-2 yr^-1) for each species as the product of the mean MPS (g segment^-1 yr^-1) and the density of new growth segments (segments m^-2).

In 2015, we revised the allometric growth metrics to allow for more shoots per plot to be measured by overcoming the time constraints imposed by measuring the dimensions of each leaf per shoot. Using the average leaf area (calculated as the area of an ellipse using the leaf dimensions) of all measured leaves for each species per plot, the revised allometric equations (all significant, p < 0.01) for mass per growth segment (MPS_b, mg segment^-1) are for A. polifolia:

MPS_b = 0.3xSqrt((ALA+LLA)²xSLxLPS)+0.2; R² = 0.85,

for C. calyculata:

MPS_b = 0.01xSqrt((ALA+LLA)²xSLxLPS)+8.3; R² = 0.91,

and for R. groenlandicum:

MPS_b = 0.002xSqrt((ALA+LLA)²xSLxLPS)+4.3; R² = 0.85,

where ALA is the average leaf area for a new growth segment (mm²), LLA is the area of the largest leaf on a segment (mm²), SL is segment length (cm), and LPS is the number of leaves per segment.

In late July 2015, we measured five plants of each species per plot as in 2014, in addition to 15 new growth segments per species measuring length of the new shoot, number of leaves, and dimensions of the largest leaf. In the second week of June 2015, we counted shoot densities in the same manner as 2014. We found no significant differences in predicted new growth segment masses between the original and revised models. In 2015, we calculated aboveground NPP for each species as the product of shoot density and the mean of the 20 derived new shoot masses.

We collected samples of new vascular plant growth in 2011-2015 (current year growth leaves or needles). We marked individuals from which leaves were collected to avoid resampling in subsequent years. All samples for N analysis were sorted for removal of debris, dried for a minimum of 6 days at 55 C, homogenized in a Thomas Wiley Mini-Mill, and analyzed on a Flash EA 1112 Series CN Soil Analyzer.

People and Organizations

Creators:

Individual:

Kelman R Wieder

Organization:

Villanova University

Email Address:

kelman.wieder@villanova.edu

Id:

https://orcid.org/0000-0001-5856-8473

Individual:	Dale H Vitt
Organization:	Southern Illinois University

Individual:

Melanie A Vile

Organization:

Villanova University

Email Address:

mvile@villanova.edu

Individual:

Jeremy A Graham

Organization:

Southern Illinois University

Email Address:

jeremyg@mtu.edu

Individual:

Jeremy A Hartsock

Organization:

Southern Illinois University

Email Address:

hartsock@siu.edu

Individual:

Hope Fillingim

Organization:

Villanova University

Email Address:

fillingimhope@gmail.com

Individual:

Melissa House

Organization:

Southern Illinois University

Email Address:

mhouse@siu.edu

Individual:

James C Quinn

Organization:

Villanova University

Email Address:

jcqui03@gmail.com

Individual:

Kimberli D Scott

Organization:

Villanova University

Email Address:

kscott@villanova.edu

Individual:

Meaghan Petix

Organization:

Southern Illinois University

Email Address:

meaghan.petix@wsu.edu

Individual:

Kelly J McMillen

Organization:

Villanova University

Email Address:

Kelly.Mcmillen@ttu.edu

Contacts:

Individual:

Kelman R Wieder

Organization:

Villanova University

Email Address:

kelman.wieder@villanova.edu

Id:

https://orcid.org/0000-0001-5856-8473

Temporal, Geographic and Taxonomic Coverage

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

Time Period

Begin:

2014-07-01

End:

2015-07-01

Sampling Site:

Description:

Alberta, Canada, 100 km south of Fort McMurray, Canada

Site Coordinates:

Longitude (degree):

-112.094

Latitude (degree):

55.895

Taxonomic Range:

Classification:

Rank Name:

kingdom

Rank Value:

Plantae

Classification:

Rank Name:

subkingdom

Rank Value:

Viridiplantae

Classification:

Rank Name:

infrakingdom

Rank Value:

Streptophyta

Classification:

Rank Name:

superdivision

Rank Value:

Embryophyta

Classification:

Rank Name:

division

Rank Value:

Tracheophyta

Classification:

Rank Name:

subdivision

Rank Value:

Spermatophytina

Classification:

Rank Name:

class

Rank Value:

Magnoliopsida

Classification:

Rank Name:

superorder

Rank Value:

Asteranae

Classification:

Rank Name:

order

Rank Value:

Ericales

Classification:

Rank Name:

family

Rank Value:

Ericaceae

Classification:

Rank Name:

genus

Rank Value:

Rhododendron

Classification:

Rank Name:	species
Rank Value:	Rhododendron groenlandicum

Classification:

Rank Name:

kingdom

Rank Value:

Plantae

Classification:

Rank Name:

subkingdom

Rank Value:

Viridiplantae

Classification:

Rank Name:

infrakingdom

Rank Value:

Streptophyta

Classification:

Rank Name:

superdivision

Rank Value:

Embryophyta

Classification:

Rank Name:

division

Rank Value:

Tracheophyta

Classification:

Rank Name:

subdivision

Rank Value:

Spermatophytina

Classification:

Rank Name:

class

Rank Value:

Magnoliopsida

Classification:

Rank Name:

superorder

Rank Value:

Asteranae

Classification:

Rank Name:

order

Rank Value:

Ericales

Classification:

Rank Name:

family

Rank Value:

Ericaceae

Classification:

Rank Name:

genus

Rank Value:

Andromeda

Classification:

Rank Name:	species
Rank Value:	Andromeda polifolia

Classification:

Rank Name:

kingdom

Rank Value:

Plantae

Classification:

Rank Name:

subkingdom

Rank Value:

Viridiplantae

Classification:

Rank Name:

infrakingdom

Rank Value:

Streptophyta

Classification:

Rank Name:

superdivision

Rank Value:

Embryophyta

Classification:

Rank Name:

division

Rank Value:

Tracheophyta

Classification:

Rank Name:

subdivision

Rank Value:

Spermatophytina

Classification:

Rank Name:

class

Rank Value:

Magnoliopsida

Classification:

Rank Name:

superorder

Rank Value:

Asteranae

Classification:

Rank Name:

order

Rank Value:

Ericales

Classification:

Rank Name:

family

Rank Value:

Ericaceae

Classification:

Rank Name:

genus

Rank Value:

Chamaedaphne

Classification:

Rank Name:	species
Rank Value:	Chamaedaphne calyculata

Project

Parent Project Information:

Title:

Nitrogen Addition Experiments in Boreal Ecosystems: Understanding the Fate of Atmospherically Deposited Nitrogen in order to Determine Nitrogen Critical Loads

Personnel:

Individual:

Kelman Wieder

Email Address:

kelman.wieder@villanova.edu

Id:

https://orcid.org/0000-0001-5856-8473

Role:

Principal Investigator

Funding:

Cumulative Environmental Management Association (CEMA): 2011-0003

Maintenance

Maintenance:

Description:	completed
Frequency:

Other Metadata

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

Shrub Growth, NPP, and Nitrogen Assimilation for Two Years in an Alberta Peatland Subjected to Increasing Nitrogen Deposition, 2014-2015

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:

Maintenance

Recently Added

Recently Updated

Data Package Metadata View Summary

Shrub Growth, NPP, and Nitrogen Assimilation for Two Years in an Alberta Peatland Subjected to Increasing Nitrogen Deposition, 2014-2015

+/- 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:

+/- Maintenance

Data Entities

Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Maintenance