Small particles and heterotrophic protists support the mesopelagic zooplankton food web in the subarctic northeast Pacific Ocean
Small particles and heterotrophic protists support the mesopelagic zooplankton food web in the subarctic northeast Pacific Ocean
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小颗粒和异养原生生物支持亚北极东北太平洋中层浮游动物食物网
DOI：
10.1002/lno.12397
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发表时间：
2023
影响因子：
4.5
通讯作者：
Popp, Brian N.
中科院分区：
文献类型：
--
作者：
Shea, Connor H.;Wojtal, Paul K.;Close, Hilary G.;Maas, Amy E.;Stamieszkin, Karen;Cope, Joseph S.;Steinberg, Deborah K.;Wallsgrove, Natalie;Popp, Brian N.
对中上层浮游动物食物网的定量了解是建立准确的海洋系统碳收支和地球化学模型的关键。在这里，我们使用氨基酸的复合特定氮稳定同位素分析来量化夏季东北太平洋次北极海洋遥感(出口)实地活动过程中微型浮游动物和中游动物群落的营养结构。颗粒和浮游动物中的来源氨基酸数值提供了强有力的证据，表明中上层浮游动物食物网的基础资源主要是小()、悬浮或缓慢下沉的颗粒，但垂直迁移的浮游动物提供的表层有机物质也可能是重要的。对来源氨基酸和营养氨基酸的值进行比较，可以估计出食物网的长度，随着深度的增加，食物网的长度显著减少，并表明从表层到至少500米的食物网中，原生微型浮游动物是关键组成部分。这些结果强调了小颗粒作为碳和氮来源对该区域中上层群落的重要性，支持了在低生产力环境中浮游动物垂直迁移与小颗粒作为碳源到深海食物网之间的相反关系的观察，并证明了异养原生动物作为这一位置中上层带的关键营养中介的作用。
A quantitative understanding of the mesopelagic zooplankton food web is key to development of accurate carbon budgets and geochemical models in marine systems. Here we use compound specific nitrogen stable isotope analysis of amino acids to quantify the trophic structure of the microzooplankton and mesozooplankton community during summer in the subarctic northeast Pacific Ocean during the EXport Processes in the Ocean from Remote Sensing (EXPORTS) field campaign. Source amino acidvalues in particles and zooplankton provide strong evidence that basal resources for the mesopelagic zooplankton food web were primarily small (), suspended or slow‐sinking particles, but that surface organic matter delivered by vertically migrating zooplankton may have also been important. Comparisons ofvalues of source and trophic amino acids provide estimates of food web length, which decrease significantly with depth and suggest that protistan microzooplankton are key components of the food web from the surface to at least 500. These results emphasize the importance of small particles as a source of carbon and nitrogen to mesopelagic communities in this region, support observations of an inverse relationship between zooplankton vertical migration and small particles as sources of carbon to deep‐sea food webs in low productivity environments, and document the role of heterotrophic protists as key trophic intermediaries in the mesopelagic zone at this location.
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DOI：
--
发表时间：
1993
期刊：
影响因子：
--
作者：
Charles B. Miller
通讯作者：
Charles B. Miller
低出口生态系统中食物网动态的定量分析
DOI：
--
发表时间：
2023
期刊：
bioRxiv
影响因子：
--
作者：
Heather Mcnair;M. G. Meyer;Sarah J. Lerch;Amy E. Maas;B. Stephens;James Fox;K. Buck;S. M. Burns;I. Cetinić;Melanie R. Cohn;C. Durkin;S. Gifford;W. Gong;Jason R. Graff;B. Jenkins;Erin L. Jones;A. Santoro;C. Shea;K. Stamieszkin;D. Steinberg;A. Marchetti;C. Carlson;S. Menden‐Deuer;M. Brzezinski;D. Siegel;T. Rynearson
通讯作者：
T. Rynearson
墨西哥湾海洋微生物食物网动态
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：
2.7
作者：
Nielsen, Jens M.;Popp, Brian N.;Winder, Monika
通讯作者：
Winder, Monika
DOI：
10.1525/elementa.2020.00107
发表时间：
2021
期刊：
Elementa: Science of the Anthropocene
影响因子：
--
作者：
David A. Siegel;I. Cetinić;Jason R. Graff;Craig M. Lee;N. Nelson;M. Perry;I. S. Ramos;D. Steinberg-D.
通讯作者：
David A. Siegel;I. Cetinić;Jason R. Graff;Craig M. Lee;N. Nelson;M. Perry;I. S. Ramos;D. Steinberg-D.