Blue Carbon Storage Capacity of Temperate Eelgrass (Zostera marina) Meadows

Type Article
Date 2018-10
Language English
Author(s) Rohr Maria Emilia1, 2, Holmer MarianneORCID2, Baum Julia K.3, Bjork MatsORCID4, Chin Diana5, Chalifour LiaORCID3, Cimon StephanieORCID6, Cusson MathieuORCID6, Dahl MartinORCID4, Deyanova Diana4, 7, Duffy J. Emmet8, Eklof Johan S.4, Geyer Julie K.9, Griffin John N.10, Gullstrom Martin6, Hereu Clara M.11, Hori Masakazu12, Hovel Kevin A.13, 14, Hughes A. Randall15, Jorgensen PabloORCID16, Kiriakopolos Stephanie17, 18, Moksnes Per-Olav19, Nakaoka MasahiroORCID20, O'Connor Mary I.21, 22, 23, Peterson Bradley5, Reiss Katrin24, Reynolds Pamela L.25, Rossi Francesca26, Ruesink Jennifer27, Santos Rui28, Stachowicz John J.29, Tomas FionaORCID18, 30, Lee Kun-Seop31, Unsworth Richard K. F.10, Bostrom Christoffer1
Affiliation(s) 1 : Abo Akad Univ, Fac Sci & Engn Environm & Marine Biol, Turku, Finland.
2 : Univ Southern Denmark, Dept Biol, Odense M, Denmark.
3 : Univ Victoria, Dept Biol, Victoria, BC, Canada.
4 : Stockholm Univ, Dept Ecol Environm & Plant Sci, Stockholm, Sweden.
5 : SUNY Stony Brook, Sch Marine & Atmospher Sci, Southampton, NY USA.
6 : Univ Quebec Chicoutimi, Dept Sci Fondament & Quebec Ocean, Saguenay, PQ, Canada.
7 : Bulgarian Acad Sci, Inst Biodivers & Ecosyst Res, Sofia, Bulgaria.
8 : Smithsonian Inst, Tennenbaum Marine Observ Network, Edgewater, MD USA.
9 : Univ North Carolina Chapel Hill, Inst Marine Sci, Morehead City, NC USA.
10 : Swansea Univ, Coll Sci, Singleton Pk, Swansea, W Glam, Wales.
11 : Univ Autonoma Baja Calif, Fac Ciencias Marinas, Ensenada, Baja California, Mexico.
12 : Natl Res Inst Fisheries & Environm Inland Sea, Fisheries Res & Educ Agcy, Hatsukaichi, Japan.
13 : San Diego State Univ, Dept Biol, San Diego, CA 92182 USA.
14 : San Diego State Univ, Coastal & Marine Inst, San Diego, CA 92182 USA.
15 : Northeastern Univ, Dept Marine & Environm Sci, Nahant, MA USA.
16 : Geomare, Ensenada, Baja California, Mexico.
17 : San Francisco State Univ, Estuary & Ocean Sci Ctr, Tiburon, CA USA.
18 : San Francisco State Univ, Dept Biol, Tiburon, CA USA.
19 : Oregon State Univ, Dept Fisheries & Wildlife, Corvallis, OR 97331 USA.
20 : Univ Gothenburg, Dept Marine Sci, Gothenburg, Sweden.
21 : Hokkaido Univ, Field Sci Ctr Northern Biosphere, Akkeshi Marine Stn, Sapporo, Hokkaido, Japan.
22 : Univ British Columbia, Dept Zool, Vancouver, BC, Canada.
23 : Univ British Columbia, Biodivers Res Ctr, Vancouver, BC, Canada.
24 : Nord Univ, Fac Biosci & Aquaculture, Bodo, Norway.
25 : Univ Calif Davis, Data Sci Initiat, Davis, CA 95616 USA.
26 : Univ Montpellier, Ctr Marine Biodivers Exploitat & Conservat MARBEC, CNRS, Montpellier, France.
27 : Univ Washington, Dept Biol, Seattle, WA 98195 USA.
28 : Univ Algarve, ALGAE Marine Ecol Res Grp, CCMar Ctr Marine Sci, Faro, Portugal.
29 : Univ Calif Davis, Dept Ecol & Evolut, Davis, CA 95616 USA.
30 : UIB CSIC, IMEDEA, Esporles, Spain.
31 : Pusan Natl Univ, Dept Biol Sci, Pusan, South Korea.
Source Global Biogeochemical Cycles (0886-6236) (Amer Geophysical Union), 2018-10 , Vol. 32 , N. 10 , P. 1457-1475
DOI 10.1029/2018GB005941
WOS© Times Cited 44
Keyword(s) blue carbon, seagrass, Z, marina
Abstract

Despite the importance of coastal ecosystems for the global carbon budgets, knowledge of their carbon storage capacity and the factors driving variability in storage capacity is still limited. Here we provide an estimate on the magnitude and variability of carbon stocks within a widely distributed marine foundation species throughout its distribution area in temperate Northern Hemisphere. We sampled 54 eelgrass (Zostera marina) meadows, spread across eight ocean margins and 36 degrees of latitude, to determine abiotic and biotic factors influencing organic carbon (C-org) stocks in Zostera marina sediments. The C-org stocks (integrated over 25-cm depth) showed a large variability and ranged from 318 to 26,523gC/m(2) with an average of 2,721gC/m(2). The projected C-org stocks obtained by extrapolating over the top 1m of sediment ranged between 23.1 and 351.7MgC/ha, which is in line with estimates for other seagrasses and other blue carbon ecosystems. Most of the variation in C-org stocks was explained by five environmental variables (sediment mud content, dry density and degree of sorting, and salinity and water depth), while plant attributes such as biomass and shoot density were less important to C-org stocks. Carbon isotopic signatures indicated that at most sites <50% of the sediment carbon is derived from seagrass, which is lower than reported previously for seagrass meadows. The high spatial carbon storage variability urges caution in extrapolating carbon storage capacity between geographical areas as well as within and between seagrass species.

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Rohr Maria Emilia, Holmer Marianne, Baum Julia K., Bjork Mats, Chin Diana, Chalifour Lia, Cimon Stephanie, Cusson Mathieu, Dahl Martin, Deyanova Diana, Duffy J. Emmet, Eklof Johan S., Geyer Julie K., Griffin John N., Gullstrom Martin, Hereu Clara M., Hori Masakazu, Hovel Kevin A., Hughes A. Randall, Jorgensen Pablo, Kiriakopolos Stephanie, Moksnes Per-Olav, Nakaoka Masahiro, O'Connor Mary I., Peterson Bradley, Reiss Katrin, Reynolds Pamela L., Rossi Francesca, Ruesink Jennifer, Santos Rui, Stachowicz John J., Tomas Fiona, Lee Kun-Seop, Unsworth Richard K. F., Bostrom Christoffer (2018). Blue Carbon Storage Capacity of Temperate Eelgrass (Zostera marina) Meadows. Global Biogeochemical Cycles, 32(10), 1457-1475. Publisher's official version : https://doi.org/10.1029/2018GB005941 , Open Access version : https://archimer.ifremer.fr/doc/00610/72199/