Loading content, please wait..
loading..
Logo
Version 3.24
or
Authors Sanders, CJ; Maher, DT; Smoak, JM; Eyre, BD
Author Full Name Sanders, Christian J.; Maher, Damien T.; Smoak, Joseph M.; Eyre, Bradley D.
Title Large variability in organic carbon and CaCO3 burial in seagrass meadows: a case study from three Australian estuaries
Source MARINE ECOLOGY PROGRESS SERIES
Language English
Document Type Article
Author Keywords Seagrass; Carbon content; Accumulation; Sedimentation; Blue carbon
Keywords Plus BLUE CARBON; MANGROVE SEDIMENTS; HABITATS; NITROGEN; PB-210; FATE
Abstract Blue carbon refers to the carbon accumulation capacity of vegetated coastal habitats, including salt marshes, mangroves forests and seagrass meadows. Here we present estimates of organic carbon (C-org) and calcium carbonate (CaCO3) burial rates from 4 seagrass species (Halophila ovalis, Posidonia australis, Ruppia megacarpa, Zostera muelleri) in 3 temperate estuaries on the east coast of Australia. The C-org burial rates (mean +/- SE) varied by an order of magnitude across the seagrass communities (16 +/- 3 to 130 +/- 40 g m(-2) yr(-1)). The delta C-13(org) and C-org:N ratios suggest that the seagrass communities buried variable mixtures of seagrass, algal and mangrove/terrestrial material. CaCO3 burial rates ranged from 15 +/- 11 to 188 +/- 122 g m(-2) yr(-1), which, if precipitated by calcifying organisms in these or nearby habitats, may offset up to 89% of the C-org burial across the 8 seagrass communities. Our results highlight a large range in both C-org and CaCO3 burial rates, and the provenance of the carbon sequestered in seagrasses, factors that need to be considered when assessing the role of seagrasses in blue carbon and climate change mitigation strategies.
Author Address [Sanders, Christian J.] Southern Cross Univ, Natl Marine Sci Ctr, Sch Environm Sci & Engn, POB 4321, Coffs Harbour, NSW 2450, Australia; [Maher, Damien T.] Southern Cross Univ, Southern Cross Geosci, POB 157, Lismore, NSW 2480, Australia; [Smoak, Joseph M.] Univ S Florida, Environm Sci, St Petersburg, FL 33701 USA; [Eyre, Bradley D.] Southern Cross Univ, Ctr Coastal Biogeochem Res, Sch Environm Sci & Engn, Lismore, NSW 2480, Australia
Reprint Address Sanders, CJ (corresponding author), Southern Cross Univ, Natl Marine Sci Ctr, Sch Environm Sci & Engn, POB 4321, Coffs Harbour, NSW 2450, Australia.
E-mail Address christian.sanders@scu.edu.au
ResearcherID Number Smoak, Joseph M/E-2140-2012; Maher, Damien/E-3443-2012; Eyre, Bradley/C-2527-2013
ORCID Number Smoak, Joseph M/0000-0002-4322-4042; Maher, Damien/0000-0003-1899-005X; Eyre, Bradley/0000-0001-5502-0680; Sanders, Christian/0000-0003-0090-0896
Funding Agency and Grant Number CSIRO Flagship Marine & Coastal Carbon Biogeochemical Cluster [DP160100248]; Australian Research CouncilAustralian Research Council [DE160100443, DE1500100581]
Funding Text This project was funded by the CSIRO Flagship Marine & Coastal Carbon Biogeochemical Cluster with a contribution from DP160100248. C.J.S. and D.T.M. were supported by the Australian Research Council (DE160100443, DE1500100581, respectively).
Times Cited 5
Total Times Cited Count (WoS, BCI, and CSCD) 5
Publisher INTER-RESEARCH
Publisher City OLDENDORF LUHE
Publisher Address NORDBUNTE 23, D-21385 OLDENDORF LUHE, GERMANY
ISSN 0171-8630
29-Character Source Abbreviation MAR ECOL PROG SER
ISO Source Abbreviation Mar. Ecol.-Prog. Ser.
Publication Date MAY 9
Year Published 2019
Volume 616
Beginning Page 211
Ending Page 218
Digital Object Identifier (DOI) 10.3354/meps12955
Page Count 8
Web of Science Category Ecology; Marine & Freshwater Biology; Oceanography
Subject Category Environmental Sciences & Ecology; Marine & Freshwater Biology; Oceanography
Document Delivery Number IX5MS
Unique Article Identifier WOS:000485728900016
Plants associated with this reference

LEGAL NOTICES — This website is protected by Copyright © The University of Sussex, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022. The eHALOPH database is protected by Database Right and Copyright © The University of Sussex and other contributors, 2006, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022. This database is based on an earlier work by James Aronson.
THIS WEBSITE AND THIS DATABASE ARE PROVIDED ON AN "AS IS" BASIS, AND YOU USE THEM AND RELY ON THEM AT YOUR OWN RISK.

Contact email: halophytes@sussex.ac.uk
Credits – Tim Flowers, Joaquim Santos, Moritz Jahns, Brian Warburton, Peter Reed