Let more big fish sink: Fisheries prevent blue carbon sequestration-half in unprofitable areas.
Let more big fish sink: Fisheries prevent blue carbon sequestration-half in unprofitable areas.
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DOI：
10.1126/sciadv.abb4848
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发表时间：
2020-10
期刊：
影响因子：
13.6
通讯作者：
Mouillot D
中科院分区：
文献类型：
--
作者：
Mariani G;Cheung WWL;Lyet A;Sala E;Mayorga J;Velez L;Gaines SD;Dejean T;Troussellier M;Mouillot D
将大型鱼类从海洋中移走，通过它们尸体的下沉限制了蓝色碳固存。与大多数陆地生物相反，它们在死亡后将碳释放到大气中，大型海洋鱼类的尸体在深海中下沉并封存碳。然而，渔业已经提取了大量的这种“蓝碳”，导致大气中二氧化碳的排放量增加。在这里，我们使用历史渔获量和燃料消耗来表明，自1950年以来，海洋渔业在大气中释放了至少7.3亿公吨的CO2（GtCO2）。在全球范围内，公海渔业提取的蓝碳中有43.5%来自没有补贴就无法盈利的地区。限制渔业的蓝碳开采，特别是在无利可图的地区，将通过减少燃料燃烧和通过重建鱼类种群和增加尸体死亡来重新激活天然碳泵，从而减少二氧化碳排放。
Removing large fish from the ocean limits blue carbon sequestration through the sinking of their carcasses. Contrary to most terrestrial organisms, which release their carbon into the atmosphere after death, carcasses of large marine fish sink and sequester carbon in the deep ocean. Yet, fisheries have extracted a massive amount of this “blue carbon,” contributing to additional atmospheric CO2 emissions. Here, we used historical catches and fuel consumption to show that ocean fisheries have released a minimum of 0.73 billion metric tons of CO2 (GtCO2) in the atmosphere since 1950. Globally, 43.5% of the blue carbon extracted by fisheries in the high seas comes from areas that would be economically unprofitable without subsidies. Limiting blue carbon extraction by fisheries, particularly on unprofitable areas, would reduce CO2 emissions by burning less fuel and reactivating a natural carbon pump through the rebuilding of fish stocks and the increase of carcasses deadfall.
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影响因子：
3.9
作者：
LEU, SS;JHAVERI, SN;CONSTANTINIDES, SM
通讯作者：
CONSTANTINIDES, SM
影响因子：
3.7
作者：
Gattuso, Jean-Pierre;Magnan, Alexandre K.;Rau, Greg H.
通讯作者：
Rau, Greg H.
影响因子：
2.8
作者：
Nicholson, RA
通讯作者：
Nicholson, RA
DOI：
10.1073/pnas.1710465114
发表时间：
2017-10-31
影响因子：
11.1
作者：
Griscom BW;Adams J;Ellis PW;Houghton RA;Lomax G;Miteva DA;Schlesinger WH;Shoch D;Siikamäki JV;Smith P;Woodbury P;Zganjar C;Blackman A;Campari J;Conant RT;Delgado C;Elias P;Gopalakrishna T;Hamsik MR;Herrero M;Kiesecker J;Landis E;Laestadius L;Leavitt SM;Minnemeyer S;Polasky S;Potapov P;Putz FE;Sanderman J;Silvius M;Wollenberg E;Fargione J
通讯作者：
Fargione J
影响因子：
27.6
作者：
Ban, Natalie C.;Gurney, Georgina Grace;Breslow, Sara Jo
通讯作者：
Breslow, Sara Jo