University of Padua

Multi-site salt marsh restoration can recover key natural functions despite long-term structural deviations and site-level differences

Airoldi, Laura and Billah, Masum MD and Bonato, Marco and Bortolami, Federica and Giomi, Folco and Gopakumar, Anjali and De Battisti, Davide (2025) Multi-site salt marsh restoration can recover key natural functions despite long-term structural deviations and site-level differences. [Data Collection]

Collection description

Restoration studies often focus on short-term structural recovery, while delivering consistent, long-term functional results across multiple locations remains a challenge, limiting their scalability. We sampled multiple restored salt marshes, at least 10 years old, at mid and low shore levels in the Venice Lagoon to evaluate the long-term structural and functional effectiveness (average match to reference natural sites) and outcome consistency (dispersion around the average) of two restoration methods: RC which favours tidal creek development at the low shore, and RB, which does not. At the mid shore, neither method fully replicated the natural sediment characteristics, and site-level differences often exceeded natural levels. Nevertheless, on average, restored vegetation matched the biotic structur and function of natural sites, including biomass, soil carbon and macrofaunal diversity. In contrast, at the low shore, neither method supported the native cordgrass Spartina maritima, despite more natural-like sediment conditions. Only the non-native S. anglica established at the low shore — thriving at RC sites, with biotic and functional traits similar to natural sites, but failing to establish at RB sites. These results suggest that methods restoring natural foreshore dynamics, like RC, better approximate low-shore natural conditions and support vegetation establishment—albeit non-native S. anglica—while RB sites supported none. Moreover, restoring multiple diffuse sites may be more effective than targeting individual locations, as a network of restored sites can, on average, better replicate key natural structural and functional conditions, even in the presence of persistent structural deviations and elevated site-level differences.

DOI: 10.25430/researchdata.cab.unipd.it.00001607
Keywords: ecosystem structure and function; restoration outcomes; Mediterranean Sea; non-indigenous species; salt marsh; scaling up
Subjects: Life Sciences > Ecology, Evolution and Environmental Biology: Population, community and ecosystem ecology, evolutionary biology, behavioural ecology, microbial ecology > Ecosystem and community ecology, macroecology
Life Sciences > Ecology, Evolution and Environmental Biology: Population, community and ecosystem ecology, evolutionary biology, behavioural ecology, microbial ecology > Marine biology and ecology
Life Sciences > Ecology, Evolution and Environmental Biology: Population, community and ecosystem ecology, evolutionary biology, behavioural ecology, microbial ecology > Biodiversity, conservation biology, conservation genetics
Department: Departments > Dipartimento di Biologia (DiBio)
Depositing User: Davide De Battisti
Date Deposited: 28 Jul 2025 11:09
Last Modified: 28 Jul 2025 11:09
Creators/Authors:
CreatorsEmailORCID
Airoldi, Lauralaura.airoldi@unipd.itorcid.org/0000-0001-5046-0871
Billah, Masum MDmasum_imsf07@yahoo.comUNSPECIFIED
Bonato, Marcomarco.bonato@gmail.comorcid.org/0000-0001-6346-2390
Bortolami, Federicafederica.bortolami.2@studenti.unipd.itUNSPECIFIED
Giomi, Folcofolcog@gmail.comorcid.org/0000-0002-7624-9457
Gopakumar, Anjalianjali.gopakumar@mq.edu.auorcid.org/0000-0002-1729-4936
De Battisti, Davidedavide.debattisti@unipd.itorcid.org/0000-0001-7847-0414
Type of data: Database
Research funder: (INTERREG V-A Italy-Croatia CBC Programme ID 10255941), PON (Ricerca e Innovazione 2014-2020, Azione IV.6 “Contratti di ricerca su tematiche Green” DM 1062 del 10/08/2021, National Biodiversity Future Center (CN00000033, Italian MUR under the National Recovery and Resilience Plan, Mission 4 Component 2 Investment 1.4)
Research project title: CASCADE, grant 19-G-12540-1, National Recovery and Resilience Plan
Grant number: 10255941
Collection period:
FromTo
1 May 202131 July 2021
Geographic coverage: Central Venice Lagoon (Italy)
Data collection method: Fieldwork was perfomred in the Venice Lagoon, following publish protocols (see methods section)
Data processing and preparation activities: Mixed-effect modelling using the open sourc software R
Resource language: English
Metadata language: English
Publisher: Research Data Unipd
Date: 28 July 2025
Copyright holders: The Author
URI: https://researchdata.cab.unipd.it/id/eprint/1607

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