Data Package Metadata View Summary

Porewater nutrient concentrations in control and fertilized plots in a Spartina alterniflora-dominated salt marsh, North Inlet, Georgetown, SC : 1993-2023

General Information

Data Package:

Local Identifier:

edi.136.2

Title:

Porewater nutrient concentrations in control and fertilized plots in a Spartina alterniflora-dominated salt marsh, North Inlet, Georgetown, SC : 1993-2023

Alternate Identifier:

DOI PLACE HOLDER

Abstract:

Porewater nutrient concentrations were measured as a component of a long-term project seeking to understand how salt marsh primary production and sediment chemistry respond to anthropogenic (e.g. eutrophication) and natural (e.g. sea-level rise) environmental change. Feedbacks between plants, sediments, nutrients and flooding were investigated with particular attention to mechanisms that keep marshes in equilibrium with sea level. Other data collected as part of the project include aboveground macrophyte biomass, plant density, marsh surface elevation and annual above ground primary productivity. These data have been used to develop the Marsh Equilibrium Model, an important tool for coastal resource managers.

Sampling occurred at Spartina alterniflora-dominated salt marsh sites in North Inlet, a relatively pristine estuary near Georgetown, SC on the SE coast of the United States. North Inlet is a tidally-dominated, bar-built estuary, with a semi-diurnal mixed tide and a tidal range of 1.4m. The 25-km2 estuary is comprised of about 20.5 km2 of intertidal salt marsh and mudflats, and 4.5 km2 of open water. Sampling began at two locations in December 1993, and at three additional locations in January 1994. Sampling occurred approximately monthly at these 5 locations through 2023. Sampling occurred at a sixth location from 2006 to 2010. The site was a dieback site that had recovered by 2010. At the other sites, the study is on-going.

Porewater was collected at multiple depths from diffusion samplers and was analyzed for sulfide, salinity, ammonium, phosphate, and iron concentrations. There are five sampling locations at three sites. Two locations are in the low marsh; three locations are in the high marsh. One high marsh location had control sampling plots in addition to plots fertilized with nitrogen and phosphorus.

Publication Date:

2024-02-26

For more information:
Visit:	DOI PLACE HOLDER

Time Period

Begin:

1993-12-01

End:

2023-12-31

People and Organizations
Contact:	Morris, James (Belle W. Baruch Institute for Marine and Coastal Sciences) [ email ]
Contact:	Sundberg, Karen (Belle W. Baruch Institute for Marine and Coastal Sciences) [ email ]
Creator:	Morris, James (Belle W. Baruch Institute for Marine and Coastal Sciences)
Creator:	Sundberg, Karen (Belle W. Baruch Institute for Marine and Coastal Sciences)
Associate:	Hankinson, Warren
Associate:	Haskin, Betsy
Associate:	Krest, Robin

Data Entities
Data Table Name:	NILTREB_porewater
Description:	Porewater nutrient concentrations of ammonium, phosphate, sulfide, salinity and ferrous iron from five depths at salt marsh sites in North Inlet, Georgetown, SC

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/136/2/f237d496697f689e4cdd2d27ea79fbcc
Name:	NILTREB_porewater
Description:	Porewater nutrient concentrations of ammonium, phosphate, sulfide, salinity and ferrous iron from five depths at salt marsh sites in North Inlet, Georgetown, SC
Number of Records:	25618
Number of Columns:	16

Table Structure

Object Name:

NILTREB_porewater.csv

Size:

1360507 byte

Authentication:

f129aab46ebb3ee4bbff524fd56feea2 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

SITE

LOCATION

DATE

TREATMENT

DEPTH

REP

NH4

NH4_flag

PO4

PO4_flag

S2_flag

Fe2

Fe2_flag

SALINITY

SALINITY_flag

Column Name:

SITE

LOCATION

DATE

TREATMENT

DEPTH

REP

NH4

NH4_flag

PO4

PO4_flag

S2_flag

Fe2

Fe2_flag

SALINITY

SALINITY_flag

Definition:

Name of sampling station

Location of sampling station within the site

Date porewater samples were collected

Experimental treatment applied to the sample location

Depth (in centimeters below the surface) from which porewater sample was collected

Porewater diffusion sampler replicate

Ammonium concentration in the porewater sample

Data flag for NH4

Phosphate concentration in the porewater sample

Data flag for PO4

Sulfide concentration in the porewater sample

Data flag for S2

Ferrous iron concentration in the porewater sample

Data flag for Fe2

Salinity of the porewater sample

Data flag for SALINITY

Storage Type:

string

dateTime

string

float

string

float

string

float

string

float

string

float

string

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

nominal

ratio

nominal

ratio

nominal

ratio

nominal

Measurement Values Domain:

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	GI
Definition	Goat_Island
Source

Code Definition

Code	OL
Definition	Oyster_Landing
Source

Code Definition

Code	SB
Definition	Sixty_Bass_Dieback
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	HM
Definition	High_Marsh
Source

Code Definition

Code	LM
Definition	Low_Marsh
Source

Format	YYYY-MM-DD
Precision

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	C
Definition	Control
Source

Code Definition

Code	NP
Definition	Fertilized
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	10
Definition	10 cm
Source

Code Definition

Code	100
Definition	100 cm
Source

Code Definition

Code	25
Definition	25 cm
Source

Code Definition

Code	50
Definition	50 cm
Source

Code Definition

Code	75
Definition	75 cm
Source

Definition

text

Unit	micromolePerLiter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	NM
Definition	No Measurement Taken
Source

Unit	micromolePerLiter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	NM
Definition	No Measurement Taken
Source

Unit	micromolePerLiter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	NM
Definition	No Measurement Taken
Source

Unit	micromolePerLiter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	NM
Definition	No Measurement Taken
Source

Unit	PracticalSalinityUnit
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	NM
Definition	No Measurement Taken
Source

Missing Value Code:

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)	LTREB, North Inlet, South Carolina, Southeast United States, Spartina alterniflora, dissolved inorganic nutrients
LTER Controlled Vocabulary	fertilization, estuaries, salt marshes, porewater, inorganic nutrients, ammonium, phosphate, sulfide, iron, salinity

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:

Triplicate porewater diffusion samplers are permanently installed on the marsh platform in fertilized (30 mol N/m2/y and 15 mol P/m2/y) or control plots. Plots are fertilized each month by burying an aliquot of the appropriate amount of fertilizer in several spots within each plot. Each sampler has 20-mL scintillation vials covered with fine mesh and open caps that collect porewater from depths of 10, 25, 50, 75, and 100 cm by diffusion. Samplers are deployed for approximately one month. Porewater samples are either filtered (0.22 uM) or preserved with ZnAc (for sulfides) immediately upon retrieval from the field. Filtered porewater samples are analyzed for PO4, NH4, and Fe (+2) concentrations colorimetrically, according to standard laboratory protocols (Strickland and Parson 1972; Gibbs 1979). Filtered porewater samples were analyzed for chloride by coulometric titration through August 2020. Chloride concentrations were converted to salinity. Beginning in September 2020, a portable conductivity meter (Extech EC600) is used to determine salinity. Unfiltered, preserved porewater samples are analyzed for sulfide (Cline 1969) colorimetrically.

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:

Dr. James Morris

Organization:

Belle W. Baruch Institute for Marine and Coastal Sciences

Address:

University of South Carolina,

Columbia, SC United States

Email Address:

jtmorris@baruch.sc.edu

Id:

https://orcid.org/0000-0002-0511-642X

Individual:

Karen Sundberg

Organization:

Belle W. Baruch Institute for Marine and Coastal Sciences

Address:

PO Box 1630,

Georgetown, SC 29442 United States

Email Address:

sundberg@mailbox.sc.edu

Id:

https://orcid.org/0000-0001-5871-6376

Contacts:

Individual:

Dr. James Morris

Organization:

Belle W. Baruch Institute for Marine and Coastal Sciences

Address:

University of South Carolina,

Columbia, SC United States

Email Address:

jtmorris@baruch.sc.edu

Id:

https://orcid.org/0000-0002-0511-642X

Individual:

Karen Sundberg

Organization:

Belle W. Baruch Institute for Marine and Coastal Sciences

Address:

PO Box 1630,

Georgetown, SC 29442 United States

Email Address:

sundberg@mailbox.sc.edu

Id:

https://orcid.org/0000-0001-5871-6376

Associated Parties:

Individual:	Warren Hankinson
Role:	Research Assistant

Individual:	Betsy Haskin
Role:	Research Assistant

Individual:	Robin Krest
Role:	Research Assistant

Metadata Providers:

Individual:

Karen Sundberg

Organization:

Belle W. Baruch Institute for Marine and Coastal Sciences

Address:

PO Box 1630,

Georgetown, SC 29442 United States

Email Address:

sundberg@mailbox.sc.edu

Id:

https://orcid.org/0000-0001-5871-6376

Temporal, Geographic and Taxonomic Coverage

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

Time Period

Begin:

1993-12-01

End:

2023-12-31

Geographic Region:

Description:

North Inlet, Georgetown, South Carolina

Bounding Coordinates:

Northern:	33.35	Southern:	33.32
Western:	-79.2	Eastern:	-79.18

Project

Parent Project Information:

Title:

LTREB: Long Term Studies of Salt Marsh Primary Production

Personnel:

Individual:

James Morris

Organization:

Belle W. Baruch Institute for Marine and Coastal Sciences

Address:

University of South Carolina,

Columbia, SC United States

Email Address:

morris@inlet.geol.sc.edu

Id:

https://orcid.org/0000-0002-0511-642X

Role:

Principle Investigator

Additional Award Information:

Funder:	National Science Foundation
Number:	1654853
Title:	LTREB Renewal: Long Term Studies of Salt Marsh Primary Production

Maintenance

Maintenance:

Description:	Data collection is approximately monthly. Dataset maintenance is on-going.
Frequency:	annually

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n      '
        |___element 'metadata'
        |     |___text '\n         '
        |     |___element 'unitList'
        |     |     |___text '\n            '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'PracticalSalinityUnit'
        |     |     |     |  \___attribute 'name' = 'PracticalSalinityUnit'
        |     |     |     |___text '\n               '
        |     |     |     |___element 'description'
        |     |     |     |___text '\n            '
        |     |     |___text '\n         '
        |     |___text '\n      '
        |___text '\n   '

Additional Metadata

additionalMetadata
        |___text '\n      '
        |___element 'metadata'
        |     |___text '\n         '
        |     |___element 'emlEditor'
        |     |        \___attribute 'app' = 'ezEML'
        |     |        \___attribute 'release' = '2024.02.21'
        |     |___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

Porewater nutrient concentrations in control and fertilized plots in a Spartina alterniflora-dominated salt marsh, North Inlet, Georgetown, SC : 1993-2023

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

Additional Metadata

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

Porewater nutrient concentrations in control and fertilized plots in a Spartina alterniflora-dominated salt marsh, North Inlet, Georgetown, SC : 1993-2023

+/- 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

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+/- Project

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Methods and Protocols

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Project

Maintenance

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