Microbial food web dynamics in the oceanic Gulf of Mexico
Microbial food web dynamics in the oceanic Gulf of Mexico
复制标题
墨西哥湾海洋微生物食物网动态
DOI:
10.1093/plankt/fbab021
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发表时间:
2021
影响因子:
2.1
通讯作者:
Quackenbush, Cameron R
中科院分区:
文献类型:
--
作者:
Landry, Michael R;Selph, Karen E;Stukel, Michael R;Swalethorp, Rasmus;Kelly, Thomas B;Beatty, Jennifer L;Quackenbush, Cameron R
Phytoplankton growth and microzooplankton grazing rates were measured in repeated profiles of dilution experiments incubatedin situon a drift array in order to assess microbial production and food web characteristics in the oligotrophic bluefin tuna spawning habitat of the Gulf of Mexico (May peak spawning seasons, 2017–2018). Grazing often exceeded growth with the processes more balanced overall in the surface mixed layer, but biomass accumulated in the mid-euphotic zone. Community production estimates (260–500 mg C m−2day−1) were low compared to similar open-ocean studies in the Pacific Ocean.Prochlorococcuswas a consistent major contributor (113–204 mg C m−2day−1) to productivity, while diatoms and dinoflagellates (2–10 and 4–13 mg C m−2day−1, respectively) were consistently low. Prymnesiophytes, the most dynamic component (34–134 mg C m−2day−1), co-dominated in 2017 experiments. Unexpected imbalances in grazing relative to production were observed for all picoplankton populations (Prochlorococcus,Synechococcusand heterotrophic bacteria), suggesting a trophic cascade in the absence of mesozooplankton predation on large microzooplankton. Study sites with abundant larval tuna had the shallowest deep chlorophyll maxima and significant net positive phytoplankton growth below the mixed layer.
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影响因子:
2.1
作者:
K. Selph;M. Landry;Andrew G. Taylor;A. Gutiérrez‐Rodríguez;M. Stukel;John J. Wokuluk;A. Pasulka
通讯作者:
A. Pasulka
影响因子:
2.1
作者:
Andrew G. Taylor;M. Landry;A. Freibott;K. Selph;A. Gutiérrez‐Rodríguez
通讯作者:
A. Gutiérrez‐Rodríguez
影响因子:
2.1
作者:
M. Landry;K. Selph;M. Décima;A. Gutiérrez‐Rodríguez;M. Stukel;Andrew G. Taylor;A. Pasulka
通讯作者:
A. Pasulka
影响因子:
4.5
作者:
A. Greer;Adam D. Boyette;V. Cruz;M. K. Cambazoğlu;B. Dzwonkowski;Luciano Chiaverano;S. L. Dykstra;C. Briseño‐Avena;R. Cowen;J. Wiggert
通讯作者:
J. Wiggert
影响因子:
2.1
作者:
Gerard, Trika;Lamkin, John T.;Kelly, Thomas B.;Knapp, Angela N.;Laiz-Carrión, RaÚl;Malca, Estrella;Selph, Karen E.;Shiroza, Akihiro;Shropshire, Taylor A.;Stukel, Michael R.
通讯作者:
Stukel, Michael R.