Short Citation:
Office for Coastal Management, 2021: Thin-layer Sediment Placement: Evaluating an Adaptation Strategy to Enhance Coastal Marsh Resilience - NERRS/NSC(NERRS Science Collaborative), https://www.fisheries.noaa.gov/inport/item/54588.

Item Identification

Title: Thin-layer Sediment Placement: Evaluating an Adaptation Strategy to Enhance Coastal Marsh Resilience - NERRS/NSC(NERRS Science Collaborative)
Status: Completed
Abstract:

Thin-layer placement (TLP) is an emergent climate adaptation strategy that mimics natural deposition processes in tidal marshes by adding a small amount of sediment on top of marsh in order to maintain elevation relative to sea level rise. This project addressed the needs of coastal managers and restoration practitioners for more information about TLP's effectiveness across diverse marsh plant communities and regions. Researchers conducted coordinated restoration experiments at eight National Estuarine Research Reserves across the East and West Coasts. The team assessed the impact of elevation, sediment type, and layer thickness on the success of this marsh adaptation technique. Greenhouse experiments exploring the effect of sediment texture and the addition of biochar as a soil amendment complemented these field studies. To support future use of TLP, the project team and an advisory committee of coastal managers at state and federal agencies and nonprofit groups created a suite of guidance documents including a consensus statement on thin-layer placement in tidal marsh ecosystems.

Purpose:

Tidal marshes provide key ecosystem services, but are threatened by sea level rise. For these ecosystems to survive, it will require active management to increase tidal marsh resilience. Researchers at the Narragansett Bay and Elkhorn Slough National Estuarine Research Reserves recently led the first national assessment of tidal marsh resilience to sea level rise to monitor coastal reserve sites across the continental United States. Now the research team is moving beyond marsh resilience monitoring and assessment to actively test strategies to enhance resilience. This project tested the restoration effectiveness of thin-layer placement, an emergent climate adaptation strategy and one of the only viable strategies to protect tidal marshes in their current footprint.

Supplemental Information:

Project Lead

Kenny Raposa

Narragansett Bay National Estuarine

Research Reserve

(401) 683-7849

kenny@nbnerr.org

Project Type

Collaborative Research – generating science

that informs decisions

Project Partners

• Chesapeake Bay Maryland National Estuarine

Research Reserve

• Chesapeake Bay Virginia National Estuarine

Research Reserve

• Drexel University

• Elkhorn Slough National Estuarine Research

Reserve

• Great Bay National Estuarine Research Reserve

• Narragansett Bay National Estuarine

Research Reserve

• North Carolina National Estuarine

Research Reserve

• Roca Communications+, LLC

• San Francisco National Estuarine

Research Reserve

• Waquoit Bay National Estuarine

Research Reserve

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
Global Change Master Directory (GCMD) Science Keywords Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Estuary

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
Global Change Master Directory (GCMD) Location Keywords Continent > North America > United States Of America > California
Global Change Master Directory (GCMD) Location Keywords Continent > North America > United States Of America > Maryland
Global Change Master Directory (GCMD) Location Keywords Continent > North America > United States Of America > Massachusetts
Global Change Master Directory (GCMD) Location Keywords Continent > North America > United States Of America > New Hampshire
Global Change Master Directory (GCMD) Location Keywords Continent > North America > United States Of America > North Carolina
Global Change Master Directory (GCMD) Location Keywords Continent > North America > United States Of America > Rhode Island
Global Change Master Directory (GCMD) Location Keywords Continent > North America > United States Of America > Virginia
None Chesapeake Bay NERR, MD
None Chesapeake Bay NERR, VA
None Elkhorn Slough NERR, CA
None Great Bay NERR, NH
None Narragansett Bay NERR, RI
None North Carolina NERR, NC
None San Francisco NERR, CA
None Waquoit Bay NERR, MA

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Distribution Liability:

The distributor does not assume liability.

Support Roles

Metadata Contact

CC ID: 795607
Date Effective From: 2017-10-31
Date Effective To:
Contact (Person): Cothran, Jeremy
Email Address: jeremy.cothran@gmail.com
View Historical Support Roles

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 886341
W° Bound: -76.91
E° Bound: -76.35
N° Bound: 37.6
S° Bound: 37.2
Description

Chesapeake Bay, VA NERR

Extent Group 1 / Geographic Area 2

CC ID: 886342
W° Bound: -121.772
E° Bound: -121.72
N° Bound: 36.843
S° Bound: 36.799
Description

Elkhorn Slough, CA NERR

Extent Group 1 / Geographic Area 3

CC ID: 886343
W° Bound: -70.97
E° Bound: -70.82
N° Bound: 43.18
S° Bound: 42.975
Description

Great Bay, NH NERR

Extent Group 1 / Geographic Area 4

CC ID: 886344
W° Bound: -71.375
E° Bound: -71.29
N° Bound: 41.68
S° Bound: 41.57
Description

Narragansett Bay, RI NERR

Extent Group 1 / Geographic Area 5

CC ID: 886345
W° Bound: -77.96
E° Bound: -75.65
N° Bound: 36.5
S° Bound: 33.85
Description

North Carolina, NC NERR

Extent Group 1 / Geographic Area 6

CC ID: 886346
W° Bound: -122.505
E° Bound: -122.45
N° Bound: 38.014
S° Bound: 37.98
Description

San Francisco, CA NERR

Extent Group 1 / Geographic Area 7

CC ID: 886347
W° Bound: -70.555
E° Bound: -70.482
N° Bound: 41.64
S° Bound: 41.544
Description

Waquoit Bay, MA NERR

Extent Group 1 / Geographic Area 8

CC ID: 795605
W° Bound: -76.75
E° Bound: -75.35
N° Bound: 39.5
S° Bound: 38.15
Description

Chesapeake Bay, MD NERR

Extent Group 1 / Time Frame 1

CC ID: 795604
Time Frame Type: Range
Start: 2017-11-01
End: 2019-10-01

Access Information

Security Class: Unclassified
Data Access Constraints:

None

Data Use Constraints:

Cite this dataset when used as a source: NOAA retains the right to analyze, synthesize and publish summaries of the NERRS/NSC data. The NERRS/NSC retains the right to be fully credited for having collected and process the data. Following academic courtesy standards, the NERR site where the data were collected should be contacted and fully acknowledged in any subsequent publications in which any part of the data are used. The data enclosed within this package/transmission are only as accurate as the quality assurance and quality control procedures that are described in the associated metadata reporting statement allow. The user bears all responsibility for its subsequent use/misuse in any further analyses or comparisons. The Federal government does not assume liability to the Recipient or third persons, nor will the Federal government reimburse or indemnify the Recipient for its liability due to any losses resulting in any way from the use of this data. Requested citation format: NOAA National Estuarine Research Reserve System (NERRS) Science Collaborative(NSC).

URLs

URL 1

CC ID: 795610
URL: http://www.nerrssciencecollaborative.org/project/Raposa17
URL Type:
Online Resource
Description:

This site provides a project overview and links to all associated products, including data.

Catalog Details

Catalog Item ID: 54588
Metadata Record Created By: Jeremy Cothran
Metadata Record Created: 2018-11-01 11:34+0000
Metadata Record Last Modified By: Jeremy Cothran
Metadata Record Last Modified: 2020-09-14 20:04+0000
Metadata Record Published: 2019-11-26
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2020-11-26