Blue Carbon Storage Capacity of Temperate Eelgrass (Zostera marina) Meadows
|Author(s)||Rohr Maria Emilia1, 2, Holmer Marianne2, Baum Julia K.3, Bjork Mats4, Chin Diana5, Chalifour Lia3, Cimon Stephanie6, Cusson Mathieu6, Dahl Martin4, 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 Pablo16, Kiriakopolos Stephanie17, 18, Moksnes Per-Olav19, Nakaoka Masahiro20, 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 Fiona18, 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|
|WOS© Times Cited||99|
|Keyword(s)||blue carbon, seagrass, Z, marina|
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.