Evidence map›Paper›PMID 37910218›Full record

ArticleEnvironmental management2024

Increasing Salt Marsh Elevation Using Sediment Augmentation: Critical Insights from Surface Sediments and Sediment Cores.

Elizabeth Fard, Lauren N Brown, Richard F Ambrose, Christine Whitcraft, Karen M Thorne, Nathaniel J Kemnitz, Douglas E Hammond, Glen M MacDonald

Open access · hybridAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Environmental management, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
1.2field-weighted citation impact, top 20% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed, 5 citations in OpenAlex.

  1. Article
  2. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 5 institutions in 1 country.

Elizabeth FardDepartment of Geography, University of California, 1255 Bunche Hall, Box 951524, Los Angeles, CA, 90095, USA. efard@ucla.edu.
Lauren N BrownDepartment of Geography, University of California, 1255 Bunche Hall, Box 951524, Los Angeles, CA, 90095, USA.
Richard F AmbroseInstitute of the Environment and Sustainability, La Kretz Hall, University of California, Suite 300, Box 951496, Los Angeles, CA, 90095-1496, USA.
Christine WhitcraftBiological Sciences Department, California State University, 1250 Bellflower Blvd, MS 9502, Long Beach, CA, 90840-9502, USA.
Karen M ThorneU.S. Geological Survey, Western Ecological Research Center, One Shields Ave, Davis, CA, 95616, USA.
Nathaniel J KemnitzDepartment of Earth Sciences, University of Southern California, 3651 Trousdale Pkwy., Los Angeles, CA, 90089-0740, USA.
Douglas E HammondDepartment of Earth Sciences, University of Southern California, 3651 Trousdale Pkwy., Los Angeles, CA, 90089-0740, USA.
Glen M MacDonaldDepartment of Geography, University of California, 1255 Bunche Hall, Box 951524, Los Angeles, CA, 90095, USA.
University of California, Los Angeles · USUniversity of Southern California · USCalifornia State University, Long Beach · USInstitute of the EnvironmentWestern Ecological Research Center

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Sea-level rise is particularly concerning for tidal wetlands that reside within an area with steep topography or are constrained by human development and alteration of sedimentation. Sediment augmentation to increase wetland elevations has been considered as a potential strategy for such areas to prevent wetland loss over the coming decades. However, there is little information on the best approaches and whether adaptive management actions can mimic natural processes to build sea-level rise resilience. In addition, the lack of information on long-term marsh characteristics, processes, and variability can hamper development of effective augmentation strategies. Here, we assess a case study in a southern California marsh to determine the nature of the pre-existing sediments and variability of the site in relation to sediments applied during an augmentation experiment. Although sediment cores revealed natural variations in the grain size and organic content of sediments deposited at the site over the past 1500 years, the applied sediments were markedly coarser in grain size than prehistoric sediments at the site (100% maximum sand versus 76% maximum sand). The rate of the experimental sediment application (25.1 ± 1.09 cm in ~2 months) was also much more rapid than natural accretion rates measured for the site historically. In contrast, post-augmentation sediment accretion rates on the augmentation site have been markedly slower than pre-augmentation rates or current rates on a nearby control site. The mismatch between the characteristics of the applied sediment and thickness of application and the historic conditions are likely strong contributors to the slow initial recovery of vegetation. Sediment augmentation has been shown to be a useful strategy in some marshes, but this case study illustrates that vegetation recovery may be slow if applied sediments are not similar or at a thickness similar to historic conditions. However, testing adaptation strategies to build wetland elevations is important given the long-term risk of habitat loss with sea-level rise. Lessons learned in the case study could be applied elsewhere.

Indexed as

Geologic SedimentsWetlandsEcosystemHumansSandSandCoastal wetlandsGrain sizeSalt marshesSeal BeachSea-level riseSediment augmentation

Identifiers

PMID37910218
PMCPMC10884093
OpenAlexW4388129810

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.