Changes in water and soil metals in a Mediterranean restored marsh subject to different water management schemes

Marsh restoration is an effective tool to remove water and soil metals via plant uptake and soil accumulation. However, few studies have attempted to quantify metal accumulation and removal in Mediterranean restored marshes. This study aimed to assess changes in water and soil metals in an oligohali...

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Published inRestoration ecology Vol. 24; no. 2; pp. 235 - 243
Main Authors Calvo‐Cubero, Juan, Ibáñez, Carles, Rovira, Albert, Sharpe, Peter J, Reyes, Enrique
Format Journal Article
LanguageEnglish
Published Malden, USA Wiley Periodicals, Inc 01.03.2016
Blackwell Publishing Ltd
Subjects
adsorption
arsenic
barium
biomass
chromium
cobalt
copper
drainage water
Ebro Delta
Environmental restoration
filters
heavy metals
irrigation water
lead
manganese
marshes
metal removal
Metals
nickel
paddies
Paspalum distichum L
pollution
restored marsh
rivers
sea level
soil accretion
Soil erosion
vanadium
water management
Water resources management
wetland plants
Wetlands
zinc
MED, Western Mediterranean
MED
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Summary:Marsh restoration is an effective tool to remove water and soil metals via plant uptake and soil accumulation. However, few studies have attempted to quantify metal accumulation and removal in Mediterranean restored marshes. This study aimed to assess changes in water and soil metals in an oligohaline‐restored marsh experiment that was set in an abandoned rice field for 3 years. Two freshwater‐type treatments were tested: river irrigation water (IW) and rice field drainage water (DW), as well as three water level management schemes. Differences in water level schemes did not cause significant differences in metal removal and accumulation in soil marshes in either water type treatment. However, results showed that significantly higher Mn, Pb, and Zn input concentrations from DW allowed higher mean percentage of concentration reduction. Higher Cu concentration from IW also allowed higher Cu reduction (85%). Mean values of Co, Cr, Cu, Ni, Pb, V, and Zn in soil were higher in the IW treatment characterized by higher plant biomass, whereas mean accumulation rates of As, Ba, Cr, Cu, Ni, Pb, V, and Zn were higher in the DW treatment with higher accretion rates. Results suggest that wetland plants likely favored soil metal adsorption through soil oxygenation and highlight the utility of restored marshes as pollution filters in coastal wetlands with significant soil accretion and subject to relative sea level rise.
Bibliography:http://dx.doi.org/10.1111/rec.12305
ark:/67375/WNG-QP4GC521-T
istex:F97E1DFEED42E65A8543DE4B980996264865D781
Government of Spain (Ministerio de Medio Ambiente) - No. 056/RN08/04.3
Table S1. Mean and SE of surface and soil water characteristics as a function of water types, water levels, and blocks. Table S2. PN-ANOVA results (F, df, and p values) of surface and soil water parameters, water metal concentration reduction (%), soil metal content (mg/kg), and accumulation (g m−2 yr−1) among water types, water levels, and blocks. Table S3. Mean and SE of soil metal content (mg/kg) in the restored marsh as a function of water levels and blocks. Table S4. Mean and SE of soil metal accumulation rate (g m−2 yr−1) in the restored marsh as a function of water levels and blocks. Table S1. Mean and SE of surface and soil water characteristics as a function of water types, water levels, and blocks. An asterisk indicates significant differences (α = 0.05). For the significant main effects of the ANOVA results among water levels and blocks, a Tukey pairwise test was applied within each water type treatment, and significant pairwise differences (α = 0.05) were denoted by different letters. Bold numbers indicate significant effects. Table S2. PN-ANOVA results (F, df, and p-values) of surface and soil water parameters, water metal concentration reduction (%), soil metal content (mg/kg), and accumulation (g m−2 yr−1) among water types, water levels, and blocks. Bold numbers indicate significant effects. Table S3. Mean and SE of soil metal content (mg/kg) in the restored marsh as a function of water levels and blocks. Table S4. Mean and SE of soil metal accumulation rate (g m−2 yr−1) in the restored marsh as a function of water levels and blocks.
ArticleID:REC12305
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1061-2971
1526-100X
DOI:10.1111/rec.12305