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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Carbon and Nitrogen Contents Driven by Organic Matter Source within Pichavaram Wetland Sediments
Journal of Marine Science and Engineering, Vol.10(1), pp.1-10
04/01/2022
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Abstract
Differences in grain size, total organic carbon (OC), total nitrogen (TN), OC/TN ratios, and stable isotope (δ13C and δ15N) were assessed in sediments from areas covered by mangrove and saltmarsh vegetation within Pichavaram estuary (Southeast India). The mean percentage contents of silt and clays (70 vs. 19%), OC (5.7 vs. 2.0%), and TN (0.39 vs. 0.14%) were consistently higher in the mangrove as compared to those observed in the saltmarsh tidal zone. These differences may obey the higher deposition and retention of fine particles in the presence of a mangrove root system that may facilitate the accumulation and preservation of organic matter within these sedimentary systems. Further, higher OC and TN contents were associated to higher terrestrial or mangrove-derived organic matter contribution with lighter δ13C signatures (−26.0‰) in both sedimentary tidal zones, whereas lower OC and TN contents were associated to heavier δ13C signatures. This study is in agreement with previous studies which indicate that the presence of wetland vegetation may increase the carbon and nutrient storage capacity within estuarine ecosystems, highly relevant information for the establishment of further conservation strategies for blue carbon ecosystems at global scales.
Details
- Title
- Carbon and Nitrogen Contents Driven by Organic Matter Source within Pichavaram Wetland Sediments
- Creators
- Sathy A. Naidu - University of Alaska FairbanksKandasamy Kathiresan - Annamalai UniversityJeffrey H. Simonson - University of Alaska FairbanksArny L. Blanchard - University of Alaska FairbanksChristian J. Sanders - Southern Cross UniversityAlexander Pérez - Universidad Peruana Cayetano HerediaRuth M. Post - University of Alaska FairbanksThanumalaya Subramoniam - Sathyabama UniversityRaj A. Naidu - 25302 Lockspur Dr., Richmond, VA 77406, USARajendran Narender - Annamalai University
- Publication Details
- Journal of Marine Science and Engineering, Vol.10(1), pp.1-10
- Publisher
- MDPI AG
- Grant note
- Parangipettai. Isotope analysis was by Tim Howe and Norma Haubenstock at the UAF/INE Isotope Laboratory and funded by (UAF/SFOS). C.J.S. is supported by the Australian Research Council (DE160100443, DP150103286 and LE140100083). A.P. was supported by the “Fondo Nacional de Desarrollo Científico Tecnológico y de Innovación Tecnológica” (FONDECYT-PERU) thought the Magnet program (Grant n° 007-2017-FONDECYT) and the “Incorporación de Investigadores” program (Grant n° E038-2019-02-FONDECYT-BM).
- Identifiers
- 991012993196902368
- Copyright
- Copyright © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
- Academic Unit
- Faculty of Science and Engineering; National Marine Science Centre; Science
- Language
- English
- Resource Type
- Journal article