Cargando…

Dissolved iron elution from mangrove ecosystem associated with polyphenols and a herbivorous snail

Interest in the systems supplying dissolved forms of iron to the sea from upland forests and wetlands has increased because iron is abundant on land but has low bioavailability in seawater. This can be a limiting factor for the growth of marine phytoplankton. Organic complex iron, a typical form of...

Descripción completa

Detalles Bibliográficos
Autores principales: Hinokidani, Ko, Nakanishi, Yasuhiro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6662338/
https://www.ncbi.nlm.nih.gov/pubmed/31380014
http://dx.doi.org/10.1002/ece3.5199
_version_ 1783439629000638464
author Hinokidani, Ko
Nakanishi, Yasuhiro
author_facet Hinokidani, Ko
Nakanishi, Yasuhiro
author_sort Hinokidani, Ko
collection PubMed
description Interest in the systems supplying dissolved forms of iron to the sea from upland forests and wetlands has increased because iron is abundant on land but has low bioavailability in seawater. This can be a limiting factor for the growth of marine phytoplankton. Organic complex iron, a typical form of iron dissolved in seawater, is supplied to the ocean through rivers from forest and wetland soils. As a related study, we focus on mangrove ecosystems located at the boundary between the land and sea and on polyphenols present in leaves as ligands for the formation of iron complexes. When mangrove leaf litterfalls on the wet forest floor, phenolic compounds leach out from the leaves and might solubilize insoluble iron in the sediments (i.e., iron complexation). However, the reaction mechanism is not simple in the field, and it might be made more complex by tidal currents and intervention by crabs and snails, which consume mangrove leaf litter. In the present study, we focused on a detritivorous snail, Terebralia palustris, as a facilitator of iron solubilization associated with phenolic compounds, and examined how the snail contribute to iron solubilization processes. Our results indicated that the amounts of phenolic compounds in mangrove sediments are strongly related to iron solubilization. Furthermore, the average dissolved iron and phenolic contents in sediments from areas inhabited by the snail were significantly higher than those of sediments where the snail was not present. We additionally report that the solubilization of iron was promoted when snail feces were added to mangrove sediments. In conclusion, we propose that iron solubilization in mangrove sediments is promoted by the interaction between i) iron in the sediment, ii) phenolic compounds derived from mangroves, and iii) the consumption of leaves and the deposition of feces by the snail.
format Online
Article
Text
id pubmed-6662338
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher John Wiley and Sons Inc.
record_format MEDLINE/PubMed
spelling pubmed-66623382019-08-02 Dissolved iron elution from mangrove ecosystem associated with polyphenols and a herbivorous snail Hinokidani, Ko Nakanishi, Yasuhiro Ecol Evol Original Research Interest in the systems supplying dissolved forms of iron to the sea from upland forests and wetlands has increased because iron is abundant on land but has low bioavailability in seawater. This can be a limiting factor for the growth of marine phytoplankton. Organic complex iron, a typical form of iron dissolved in seawater, is supplied to the ocean through rivers from forest and wetland soils. As a related study, we focus on mangrove ecosystems located at the boundary between the land and sea and on polyphenols present in leaves as ligands for the formation of iron complexes. When mangrove leaf litterfalls on the wet forest floor, phenolic compounds leach out from the leaves and might solubilize insoluble iron in the sediments (i.e., iron complexation). However, the reaction mechanism is not simple in the field, and it might be made more complex by tidal currents and intervention by crabs and snails, which consume mangrove leaf litter. In the present study, we focused on a detritivorous snail, Terebralia palustris, as a facilitator of iron solubilization associated with phenolic compounds, and examined how the snail contribute to iron solubilization processes. Our results indicated that the amounts of phenolic compounds in mangrove sediments are strongly related to iron solubilization. Furthermore, the average dissolved iron and phenolic contents in sediments from areas inhabited by the snail were significantly higher than those of sediments where the snail was not present. We additionally report that the solubilization of iron was promoted when snail feces were added to mangrove sediments. In conclusion, we propose that iron solubilization in mangrove sediments is promoted by the interaction between i) iron in the sediment, ii) phenolic compounds derived from mangroves, and iii) the consumption of leaves and the deposition of feces by the snail. John Wiley and Sons Inc. 2019-05-29 /pmc/articles/PMC6662338/ /pubmed/31380014 http://dx.doi.org/10.1002/ece3.5199 Text en © 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Hinokidani, Ko
Nakanishi, Yasuhiro
Dissolved iron elution from mangrove ecosystem associated with polyphenols and a herbivorous snail
title Dissolved iron elution from mangrove ecosystem associated with polyphenols and a herbivorous snail
title_full Dissolved iron elution from mangrove ecosystem associated with polyphenols and a herbivorous snail
title_fullStr Dissolved iron elution from mangrove ecosystem associated with polyphenols and a herbivorous snail
title_full_unstemmed Dissolved iron elution from mangrove ecosystem associated with polyphenols and a herbivorous snail
title_short Dissolved iron elution from mangrove ecosystem associated with polyphenols and a herbivorous snail
title_sort dissolved iron elution from mangrove ecosystem associated with polyphenols and a herbivorous snail
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6662338/
https://www.ncbi.nlm.nih.gov/pubmed/31380014
http://dx.doi.org/10.1002/ece3.5199
work_keys_str_mv AT hinokidaniko dissolvedironelutionfrommangroveecosystemassociatedwithpolyphenolsandaherbivoroussnail
AT nakanishiyasuhiro dissolvedironelutionfrommangroveecosystemassociatedwithpolyphenolsandaherbivoroussnail