Taxon-specific phytoplankton growth, nutrient utilization and light limitation in the oligotrophic Gulf of Mexico
Taxon-specific phytoplankton growth, nutrient utilization and light limitation in the oligotrophic Gulf of Mexico
复制标题
墨西哥湾贫营养区特定浮游植物的生长、养分利用和光限制
DOI:
10.1093/plankt/fbab028
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发表时间:
2021
影响因子:
2.1
通讯作者:
Stukel, Michael R
中科院分区:
文献类型:
--
作者:
Yingling, Natalia;Kelly, Thomas B;Shropshire, Taylor A;Landry, Michael R;Selph, Karen E;Knapp, Angela N;Kranz, Sven A;Stukel, Michael R
The highly stratified, oligotrophic regions of the oceans are predominantly nitrogen limited in the surface ocean and light limited at the deep chlorophyll maximum (DCM). Hence, determining light and nitrogen co-limitation patterns for diverse phytoplankton taxa is crucial to understanding marine primary production throughout the euphotic zone. During two cruises in the deep-water Gulf of Mexico, we measured primary productivity (H13CO3−), nitrate uptake (15NO3−) and ammonium uptake (15NH4+) throughout the water column. Primary productivity declined with depth from the mixed layer to the DCM, averaging 27.1 mmol C m−2d−1. The fraction of growth supported by NO3−was consistently low, with upper euphotic zone values ranging from 0.01 to 0.14 and lower euphotic zone values ranging from 0.03 to 0.44. Nitrate uptake showed strong diel patterns (maximum during the day), whereas ammonium uptake exhibited no diel variability. To parameterize taxon-specific phytoplankton nutrient and light utilization, we used a data assimilation approach (Bayesian Markov Chain Monte Carlo) including primary productivity, nutrient uptake and taxon-specific growth rate measurements. Parameters derived from this analysis define distinct niches for five phytoplankton taxa (Prochlorococcus,Synechococcus, diatoms, dinoflagellates and prymnesiophytes) and may be useful for constraining biogeochemical models of oligotrophic open-ocean systems.
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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:
Landry, Michael R;Selph, Karen E;Stukel, Michael R;Swalethorp, Rasmus;Kelly, Thomas B;Beatty, Jennifer L;Quackenbush, Cameron R
通讯作者:
Quackenbush, Cameron R
影响因子:
1.4
作者:
B. Wawrik;J. Paul;D. Bronk;David E. John;M. Gray
通讯作者:
M. Gray
影响因子:
2.1
作者:
A. Knapp;Rachel K. Thomas;M. Stukel;T. Kelly;M. Landry;K. Selph;E. Malca;T. Gerard;J. Lamkin
通讯作者:
A. Knapp;Rachel K. Thomas;M. Stukel;T. Kelly;M. Landry;K. Selph;E. Malca;T. Gerard;J. Lamkin
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
D. Biggs;P. Ressler
通讯作者:
P. Ressler