Implications of Pyrosoma atlanticum range expansion on phytoplankton standing stocks in the Northern California Current
Implications of Pyrosoma atlanticum range expansion on phytoplankton standing stocks in the Northern California Current
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大西洋火虫范围扩大对北加州海流浮游植物现存量的影响
DOI:
10.1016/j.pocean.2020.102424
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发表时间:
2020
影响因子:
4.1
通讯作者:
Hurst, Thomas P.
中科院分区:
文献类型:
--
作者:
O'Loughlin, Jessica H.;Bernard, Kim S.;Daly, Elizabeth A.;Zeman, Samantha;Fisher, Jennifer L.;Brodeur, Richard D.;Hurst, Thomas P.
Coinciding with the marine heat wave in 2014 and a strong El Niño in 2016, blooms of the tropical-temperate pelagic colonial tunicate,Pyrosoma atlanticum, expanded into the Northern California Current (NCC). Given the high densities ofP. atlanticumcolonies observed in the NCC, and their potential for high grazing rates, we hypothesized that the species could have a substantial negative effect on the phytoplankton standing stock in the Northeastern Pacific Ocean. In the late winter, spring and early autumn of 2018, we measured abundances and length frequencies ofP. atlanticumcolonies off the coast of Oregon and estimated their spring grazing impact on the local phytoplankton standing stock. Abundances ofP. atlanticumpeaked in late winter (0.7 colonies m−3), dropped off in spring (0.42 colonies m−3), and declined to near-absent in early autumn (0.07 colonies m−3). We observed a doubling in the median size ofP. atlanticumcolonies from late winter to spring, followed by a decline in size in early autumn. With their high individual colony gut pigment contents and bloom densities, the overall spring grazing impact ofP. atlanticumwas substantial, reaching a maximum of 22% of the available phytoplankton standing stock.
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DOI:
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发表时间:
1995
期刊:
影响因子:
--
作者:
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通讯作者:
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发表时间:
2014
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影响因子:
2.5
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通讯作者:
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发表时间:
2016
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通讯作者:
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DOI:
10.1016/j.dsr.2011.12.015
发表时间:
2012-04-01
影响因子:
2.4
作者:
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通讯作者:
Schofield, Oscar M. E.