There is considerable interest in quantifying the capacity of the World’s ecosystems to trap and sequester carbon (C). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Ĭompeting interests: The authors have declared that no competing interests exist. Part of this study was funded by the Spanish Ministry for Science and Innovation (MICINN) with the grant CTM2006-12492/MAR. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.įunding: This research was funded by a Visiting Research Fellows grant from the Faculty of Health, Engineering & Science at Edith Cowan University, project number .06.01 ( ). ![]() Received: Accepted: JPublished: September 5, 2013Ĭopyright: © 2013 Lavery et al. Valentine, Dauphin Island Sea Lab, United States of America We conclude that there is an urgent need for more information on the variability in seagrass carbon stock and accumulation rates, and the factors driving this variability, in order to improve global estimates of seagrass Blue Carbon storage.Ĭitation: Lavery PS, Mateo M-Á, Serrano O, Rozaimi M (2013) Variability in the Carbon Storage of Seagrass Habitats and Its Implications for Global Estimates of Blue Carbon Ecosystem Service. These estimates, while large, were one-third of those that would be calculated if inter-habitat variability in carbon stocks were not taken into account. The estimates of annual C org accumulation by Australian seagrasses ranged from 0.093 to 6.15 Mt, with a most probable estimate of 0.93 Mt y −1 (10.1 t. At a 2014–15 fixed carbon price of A$25.40 t −1 and an estimated market price of $35 t −1 in 2020, the C org stock in the top 25 cm of seagrass habitats has a potential value of $AUD 3.9–5.4 bill. The estimated carbon storage in Australian seagrass ecosystems, taking into account inter-habitat variability, was 155 Mt. For some species, there was an effect of water depth on the C org stocks, with greater stocks in deeper sites no differences were found among sub-tidal and inter-tidal habitats. Integrated over the top 25 cm of sediment, this equated to an areal stock of 262–4833 g C org m −2. There was an 18-fold difference in the C org stock (1.09–20.14 mg C org cm −3 for a temperate Posidonia sinuosa and a temperate, estuarine P. The habitats encompassed 10 species, in mono-specific or mixed meadows, depositional to exposed habitats and temperate to tropical habitats. ![]() We surveyed 17 Australian seagrass habitats to assess the variability in their sedimentary organic carbon (C org) stocks. Most information on seagrass carbon storage is derived from studies of a single species, Posidonia oceanica, from the Mediterranean Sea. The recent focus on carbon trading has intensified interest in ‘Blue Carbon’–carbon sequestered by coastal vegetated ecosystems, particularly seagrasses.
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