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Salt marsh restoration: an overview of techniques and success indicators

期刊

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 29, 期 11, 页码 15347-15363

出版社

SPRINGER HEIDELBERG
DOI: 10.1007/s11356-021-18305-5

关键词

Restoration ecology; Coastal wetlands; Coastal biological resources; Coastal management; Ecosystem services

资金

  1. Interreg
  2. CASCADE
  3. CoAStal and marine waters integrated monitoring systems for ecosystems proteCtion AnD managemEnt (INTERREG V-A Italy-Croatia CBC Programme) [10255941]

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This paper provides an overview of salt marsh restoration techniques and success indicators. The data shows that most salt marshes are restored through assisted abiotic strategies. A total of 214 indicators were found, covering various aspects of salt marsh ecology. The authors also identified several recent research hotspots.
Coastal wetlands including salt marshes are among the most productive ecosystems on Earth. They are known for improving the quality of coastal water and provisioning coastal fisheries. However, this ecosystem is under potential threat due to urban coastal land reclamation, limited sediment supply, increased nutrient/eutrophication, and sea level rise. Therefore, restoration efforts to protect the degraded salt marsh habitat are considerably increasing worldwide. In this paper, we present an overview of salt marsh restoration techniques and success indicators. Published scientific literature in English language was collected by searching the most relevant keywords from popular search engines, namely, Google Scholar, Scopus, and Mendeley to get the information about salt marsh restoration techniques and success indicators. This study comprehensively reviewed data from 78 peer-reviewed papers. Results indicated that much of the salt marsh was restored through assisted abiotic strategies (e.g., recovery of tidal exchange, managed realignment, and sediment level amendment). A total of 214 indicators were found, spanning over six major ecological attributes such as structural diversity, ecosystem functions, physical conditions, species composition, external exchange, and absence of threat. Author keywords analysis revealed several hotspots for recent research (e.g., 16 s rRNA, fungi, microbial communities, carbon accumulation, and blue carbon). This paper proposes a model for restoring degraded salt marsh, as well as tracking their success. The information presented here will assist the marine ecosystem restoration practitioners in getting a comprehensive understanding of salt marsh restoration success evaluation.

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