Despite growing attention on the contribution of macroalgae to carbon cycling and sequestration (blue carbon), more ob-servational data is needed to constrain current estimates. In this study, we estimate the floating macroalgal carbon flux within and beyond a large sub-Arctic fjord system, Nuup Kangerlua, Greenland, which could potentially reach carbon sinks. Our study estimates 1) the fjord-scale area with macroalgal coverage and barrens caused by sea urchin grazing, 2) the floating macroalgal biomass in the fjord, and 3) the annual export flux of floating macroalgae out of the fjord system. ROV surveys documented that macroalgal habitats cover 32 % of the seafloor within the photic zone (0-30 m) with an average coverage of 39.6, 22, and 7.2 % in the depth intervals 0-10, 10-20, and 20-30 m, respectively. 15 % of the area suitable for macroalgae was denuded by sea urchin grazing. Floating macroalgae were common with an average biomass of 55 kg wet weight km(-2). Densities and species composition varied seasonally with the highest levels after storms. The floating biomass was composed of intertidal macroalgal species (58 %) (Fucus vesiculosus, Fucus distichus, and Ascophyllumnodosum) and kelps (42 %) (Saccharinalongicruris, S. latissima, and Alaria esculenta). We deployed surface GPS drifters to simulate floating macroalgal trajectories and velocity. Data indicated that 80 % of the floating biomass is retained in the fjord where its fate in relation to long-term sequestration is unknown. Export beyond the fjord was limited and indicated an annual floating macroalgal export beyond the fjord of only 6.92 t Cyr(-1), which is equal to similar to 0.02 % of the annual net primary production. Our findings suggest that floating macroalgae support a limited blue carbon potential beyond this fjord and that future research should focus on the fate of retained floating macroalgae and subsurface export to resolve the connectivity between macroalgal habitats and long-term carbon sinks.
机构:
King Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Aarhus Univ, Arctic Res Ctr, Aarhus C, DenmarkKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Duarte, Carlos M.
Gattuso, Jean-Pierre
论文数: 0引用数: 0
h-index: 0
机构:
Sorbonne Univ, Lab Oceanog Villefranche, CNRS, Villefranche Sur Mer, France
Sci Po, Inst Sustainable Dev & Int Relat, Paris, FranceKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Gattuso, Jean-Pierre
Hancke, Kasper
论文数: 0引用数: 0
h-index: 0
机构:
Norwegian Inst Water Res NIVA, Oslo, NorwayKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Hancke, Kasper
Gundersen, Hege
论文数: 0引用数: 0
h-index: 0
机构:
Norwegian Inst Water Res NIVA, Oslo, NorwayKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Gundersen, Hege
Filbee-Dexter, Karen
论文数: 0引用数: 0
h-index: 0
机构:
Inst Marine Res, His, Norway
Univ Western Australia, UWA Oceans Inst, Crawley, WA, Australia
Univ Western Australia, Sch Biol Sci, Crawley, WA, AustraliaKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Filbee-Dexter, Karen
Pedersen, Morten F.
论文数: 0引用数: 0
h-index: 0
机构:
Roskilde Univ, Dept Sci & Environm, Roskilde, DenmarkKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Pedersen, Morten F.
Middelburg, Jack J.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Utrecht, Dept Earth Sci, Utrecht, NetherlandsKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Middelburg, Jack J.
Burrows, Michael T.
论文数: 0引用数: 0
h-index: 0
机构:
Scottish Marine Inst, Scottish Assoc Marine Sci, Oban, Argyll, ScotlandKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Burrows, Michael T.
Krumhansl, Kira A.
论文数: 0引用数: 0
h-index: 0
机构:
Bedford Inst Oceanog, Fisheries & Oceans Canada, Dartmouth, NS, CanadaKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Krumhansl, Kira A.
Wernberg, Thomas
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Australia, UWA Oceans Inst, Crawley, WA, Australia
Univ Western Australia, Sch Biol Sci, Crawley, WA, Australia
Aberystwyth Univ, Inst Biol Environm & Rural Sci, Aberystwyth, Dyfed, WalesKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Wernberg, Thomas
Moore, Pippa
论文数: 0引用数: 0
h-index: 0
机构:
Aberystwyth Univ, Inst Biol Environm & Rural Sci, Aberystwyth, Dyfed, WalesKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Moore, Pippa
Pessarrodona, Albert
论文数: 0引用数: 0
h-index: 0
机构:
Aberystwyth Univ, Inst Biol Environm & Rural Sci, Aberystwyth, Dyfed, WalesKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Pessarrodona, Albert
Orberg, Sarah B.
论文数: 0引用数: 0
h-index: 0
机构:
Aarhus Univ, Arctic Res Ctr, Aarhus C, Denmark
Aarhus Univ, Dept Biosci, Silkeborg, DenmarkKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Orberg, Sarah B.
论文数: 引用数:
h-index:
机构:
Pinto, Isabel S.
Assis, Jorge
论文数: 0引用数: 0
h-index: 0
机构:
Univ Algarve, CCMAR, Campus Gambelas, Faro, PortugalKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Assis, Jorge
Queiros, Ana M.
论文数: 0引用数: 0
h-index: 0
机构:
Plymouth Marine Lab, Plymouth, Devon, EnglandKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Queiros, Ana M.
Smale, Dan A.
论文数: 0引用数: 0
h-index: 0
机构:
Marine Biol Assoc UK, Plymouth, Devon, EnglandKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Smale, Dan A.
Bekkby, Trine
论文数: 0引用数: 0
h-index: 0
机构:
Norwegian Inst Water Res NIVA, Oslo, NorwayKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Bekkby, Trine
Serrao, Ester A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Algarve, CCMAR, Campus Gambelas, Faro, PortugalKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Serrao, Ester A.
Krause-Jensen, Dorte
论文数: 0引用数: 0
h-index: 0
机构:
Aarhus Univ, Arctic Res Ctr, Aarhus C, Denmark
Aarhus Univ, Dept Biosci, Silkeborg, DenmarkKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Krause-Jensen, Dorte
[J].
GLOBAL ECOLOGY AND BIOGEOGRAPHY,
2022,
31
(07):
: 1422
-
1439
[10]
Duarte CM, 2013, NAT CLIM CHANGE, V3, P961, DOI [10.1038/NCLIMATE1970, 10.1038/nclimate1970]
机构:
King Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Aarhus Univ, Arctic Res Ctr, Aarhus C, DenmarkKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Duarte, Carlos M.
Gattuso, Jean-Pierre
论文数: 0引用数: 0
h-index: 0
机构:
Sorbonne Univ, Lab Oceanog Villefranche, CNRS, Villefranche Sur Mer, France
Sci Po, Inst Sustainable Dev & Int Relat, Paris, FranceKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Gattuso, Jean-Pierre
Hancke, Kasper
论文数: 0引用数: 0
h-index: 0
机构:
Norwegian Inst Water Res NIVA, Oslo, NorwayKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Hancke, Kasper
Gundersen, Hege
论文数: 0引用数: 0
h-index: 0
机构:
Norwegian Inst Water Res NIVA, Oslo, NorwayKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Gundersen, Hege
Filbee-Dexter, Karen
论文数: 0引用数: 0
h-index: 0
机构:
Inst Marine Res, His, Norway
Univ Western Australia, UWA Oceans Inst, Crawley, WA, Australia
Univ Western Australia, Sch Biol Sci, Crawley, WA, AustraliaKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Filbee-Dexter, Karen
Pedersen, Morten F.
论文数: 0引用数: 0
h-index: 0
机构:
Roskilde Univ, Dept Sci & Environm, Roskilde, DenmarkKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Pedersen, Morten F.
Middelburg, Jack J.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Utrecht, Dept Earth Sci, Utrecht, NetherlandsKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Middelburg, Jack J.
Burrows, Michael T.
论文数: 0引用数: 0
h-index: 0
机构:
Scottish Marine Inst, Scottish Assoc Marine Sci, Oban, Argyll, ScotlandKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Burrows, Michael T.
Krumhansl, Kira A.
论文数: 0引用数: 0
h-index: 0
机构:
Bedford Inst Oceanog, Fisheries & Oceans Canada, Dartmouth, NS, CanadaKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Krumhansl, Kira A.
Wernberg, Thomas
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Australia, UWA Oceans Inst, Crawley, WA, Australia
Univ Western Australia, Sch Biol Sci, Crawley, WA, Australia
Aberystwyth Univ, Inst Biol Environm & Rural Sci, Aberystwyth, Dyfed, WalesKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Wernberg, Thomas
Moore, Pippa
论文数: 0引用数: 0
h-index: 0
机构:
Aberystwyth Univ, Inst Biol Environm & Rural Sci, Aberystwyth, Dyfed, WalesKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Moore, Pippa
Pessarrodona, Albert
论文数: 0引用数: 0
h-index: 0
机构:
Aberystwyth Univ, Inst Biol Environm & Rural Sci, Aberystwyth, Dyfed, WalesKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Pessarrodona, Albert
Orberg, Sarah B.
论文数: 0引用数: 0
h-index: 0
机构:
Aarhus Univ, Arctic Res Ctr, Aarhus C, Denmark
Aarhus Univ, Dept Biosci, Silkeborg, DenmarkKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Orberg, Sarah B.
论文数: 引用数:
h-index:
机构:
Pinto, Isabel S.
Assis, Jorge
论文数: 0引用数: 0
h-index: 0
机构:
Univ Algarve, CCMAR, Campus Gambelas, Faro, PortugalKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Assis, Jorge
Queiros, Ana M.
论文数: 0引用数: 0
h-index: 0
机构:
Plymouth Marine Lab, Plymouth, Devon, EnglandKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Queiros, Ana M.
Smale, Dan A.
论文数: 0引用数: 0
h-index: 0
机构:
Marine Biol Assoc UK, Plymouth, Devon, EnglandKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Smale, Dan A.
Bekkby, Trine
论文数: 0引用数: 0
h-index: 0
机构:
Norwegian Inst Water Res NIVA, Oslo, NorwayKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Bekkby, Trine
Serrao, Ester A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Algarve, CCMAR, Campus Gambelas, Faro, PortugalKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Serrao, Ester A.
Krause-Jensen, Dorte
论文数: 0引用数: 0
h-index: 0
机构:
Aarhus Univ, Arctic Res Ctr, Aarhus C, Denmark
Aarhus Univ, Dept Biosci, Silkeborg, DenmarkKing Abdullah Univ Sci & Technol KAUST, Red Sea Res Ctr, Thuwal 239556900, Saudi Arabia
Krause-Jensen, Dorte
[J].
GLOBAL ECOLOGY AND BIOGEOGRAPHY,
2022,
31
(07):
: 1422
-
1439
[10]
Duarte CM, 2013, NAT CLIM CHANGE, V3, P961, DOI [10.1038/NCLIMATE1970, 10.1038/nclimate1970]