Cyclonic eddies modulate temporal and spatial decoupling of particulate carbon, nitrogen, and biogenic silica export in the North Pacific Subtropical Gyre
Cyclonic eddies modulate temporal and spatial decoupling of particulate carbon, nitrogen, and biogenic silica export in the North Pacific Subtropical Gyre
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气旋涡旋调节北太平洋副热带环流中颗粒碳、氮和生物二氧化硅输出的时间和空间解耦
DOI：
10.1002/lno.11895
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发表时间：
2021-07
影响因子：
4.5
通讯作者：
Dai Minhan
中科院分区：
文献类型：
--
作者：
Zhou Kuanbo;Benitez-Nelson Claudia R.;Huang Jie;Xiu Peng;Sun Zhenyu;Dai Minhan
Mesoscale eddies may enhance nutrient injection into the photic zone and ultimately the magnitude and composition of particle export to depth. Using satellite altimetry, we identified 38 cyclonic eddies that passed in close proximity to the Hawaii Ocean Time‐series (HOT) Station ALOHA, located in the North Pacific Subtropical Gyre, from 1993 to 2018. Particulate carbon (C), nitrogen (N), and biogenic silica (Si) export rates, measured using free floating sediment traps deployed at 150 m as part of HOT, were then associated with either the eddy core or edge based on distance to the eddy center and time of eddy evolution. Elemental fluxes varied significantly within and among individual eddies depending on season and eddy age. Spatially, biogenic Si fluxes were enhanced relative to particulate C and N fluxes at both the cores and edges, with temporally highest particulate C, N and biogenic Si fluxes occurring during the mature stage (3–8 weeks). On average, biogenic Si fluxes were 200 ± 80% (30–270% increase) higher relative to non‐eddy and during non‐bloom periods, with modest enhanced particulate C (10–30% increase) and N (10–20% increase) fluxes. In contrast, during the bloom season (July and August), elemental fluxes were all reduced by 20% relative to non‐eddy references, suggesting that cyclonic eddies depress export during the bloom period. Our results indicate that cyclonic eddies not only increase, but differentially impact the sinking export of critical biological elements, thereby contributing to long term ecological changes in foodwebs that rely on silica as well as carbon for growth.
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影响因子：
2.7
作者：
Doblin MA;Petrou K;Sinutok S;Seymour JR;Messer LF;Brown MV;Norman L;Everett JD;McInnes AS;Ralph PJ;Thompson PA;Hassler CS
通讯作者：
Hassler CS
DOI：
10.1016/0967-0645(96)00002-1
发表时间：
1996
影响因子：
3
作者：
D. Karl;J. Christian;J. Dore;Dale V. Hebel;Ricardo M Letelier;L. Tupas;C. D. Winn
通讯作者：
D. Karl;J. Christian;J. Dore;Dale V. Hebel;Ricardo M Letelier;L. Tupas;C. D. Winn
影响因子：
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影响因子：
5.2
作者：
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通讯作者：
L. Resplandy;M. Lévy;D. McGillicuddy
DOI：
10.1016/j.dsr.2011.08.001
发表时间：
2011-10-01
影响因子：
2.4
作者：
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通讯作者：
Updyke, Brett