Carbon and mercury burial in mangrove soils across an anthropogenic gradient

IF 2.6 3区地球科学 Q1 MARINE & FRESHWATER BIOLOGY

Estuarine Coastal and Shelf Science Pub Date : 2025-03-03 DOI:10.1016/j.ecss.2025.109226

Antoniwal A. Jatobá-Junior , Vanessa Hatje , Pere Masque , Carlos Eduardo de Rezende , Alex Cabral , Yvonne Y.Y. Yau , João Barreira , Gloria M.S. Reithmaier , Isaac R. Santos

{"title":"Carbon and mercury burial in mangrove soils across an anthropogenic gradient","authors":"Antoniwal A. Jatobá-Junior , Vanessa Hatje , Pere Masque , Carlos Eduardo de Rezende , Alex Cabral , Yvonne Y.Y. Yau , João Barreira , Gloria M.S. Reithmaier , Isaac R. Santos","doi":"10.1016/j.ecss.2025.109226","DOIUrl":null,"url":null,"abstract":"<div><div>Mangrove forests are important sinks for atmospheric CO<sub>2</sub>, resulting in organic-rich soils. However, increasing anthropogenic pressures may impact mangrove carbon sequestration. This study investigated organic carbon (OC) and mercury (Hg) stocks and accumulation rates in Brazilian mangroves under different degrees of anthropogenic influences. Organic carbon stocks and accumulation rates were 285 ± 33 Mg C ha<sup>−1</sup> and 128 ± 96 g C m<sup>−2</sup> yr<sup>−1</sup>, respectively. The OC stocks were not significantly (<em>p</em> > 0.05) different in the pristine and impacted mangroves. A high variability in OC accumulation rates across intertidal gradients underscores the importance of considering small-scale vertical variability when assessing blue carbon. The relationship between Hg and OC was stronger in impacted mangroves than the well-preserved sites. This study contributes to minimize uncertainties in South America OC stocks and accumulation rates and reveals links to Hg contamination. Understanding these dynamics enhances our comprehension of blue carbon ecosystems’ potential to store carbon and filter out pollution at the land-ocean interface.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"318 ","pages":"Article 109226"},"PeriodicalIF":2.6000,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Estuarine Coastal and Shelf Science","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0272771425001040","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Mangrove forests are important sinks for atmospheric CO₂, resulting in organic-rich soils. However, increasing anthropogenic pressures may impact mangrove carbon sequestration. This study investigated organic carbon (OC) and mercury (Hg) stocks and accumulation rates in Brazilian mangroves under different degrees of anthropogenic influences. Organic carbon stocks and accumulation rates were 285 ± 33 Mg C ha⁻¹ and 128 ± 96 g C m⁻² yr⁻¹, respectively. The OC stocks were not significantly (p > 0.05) different in the pristine and impacted mangroves. A high variability in OC accumulation rates across intertidal gradients underscores the importance of considering small-scale vertical variability when assessing blue carbon. The relationship between Hg and OC was stronger in impacted mangroves than the well-preserved sites. This study contributes to minimize uncertainties in South America OC stocks and accumulation rates and reveals links to Hg contamination. Understanding these dynamics enhances our comprehension of blue carbon ecosystems’ potential to store carbon and filter out pollution at the land-ocean interface.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Estuarine Coastal and Shelf Science 地学-海洋学

CiteScore

5.60

自引率

7.10%

发文量

374

审稿时长

9 months

期刊介绍： Estuarine, Coastal and Shelf Science is an international multidisciplinary journal devoted to the analysis of saline water phenomena ranging from the outer edge of the continental shelf to the upper limits of the tidal zone. The journal provides a unique forum, unifying the multidisciplinary approaches to the study of the oceanography of estuaries, coastal zones, and continental shelf seas. It features original research papers, review papers and short communications treating such disciplines as zoology, botany, geology, sedimentology, physical oceanography.