Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1918439117 |
Dynamics and functional diversity of the smallest phytoplankton on the Northeast US Shelf | |
Bethany L. Fowler; Michael G. Neubert; Kristen R. Hunter-Cevera; Robert J. Olson; Alexi Shalapyonok; Andrew R. Solow; Heidi M. Sosik | |
2020-05-15 | |
发表期刊 | Proceedings of the National Academy of Sciences
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出版年 | 2020 |
英文摘要 | Picophytoplankton are the most abundant primary producers in the ocean. Knowledge of their community dynamics is key to understanding their role in marine food webs and global biogeochemical cycles. To this end, we analyzed a 16-y time series of observations of a phytoplankton community at a nearshore site on the Northeast US Shelf. We used a size-structured population model to estimate in situ division rates for the picoeukaryote assemblage and compared the dynamics with those of the picocyanobacteria Synechococcus at the same location. We found that the picoeukaryotes divide at roughly twice the rate of the more abundant Synechococcus and are subject to greater loss rates (likely from viral lysis and zooplankton grazing). We describe the dynamics of these groups across short and long timescales and conclude that, despite their taxonomic differences, their populations respond similarly to changes in the biotic and abiotic environment. Both groups appear to be temperature limited in the spring and light limited in the fall and to experience greater mortality during the day than at night. Compared with Synechococcus, the picoeukaryotes are subject to greater top-down control and contribute more to the region’s primary productivity than their standing stocks suggest. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/267679 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Bethany L. Fowler,Michael G. Neubert,Kristen R. Hunter-Cevera,et al. Dynamics and functional diversity of the smallest phytoplankton on the Northeast US Shelf[J]. Proceedings of the National Academy of Sciences,2020. |
APA | Bethany L. Fowler.,Michael G. Neubert.,Kristen R. Hunter-Cevera.,Robert J. Olson.,Alexi Shalapyonok.,...&Heidi M. Sosik.(2020).Dynamics and functional diversity of the smallest phytoplankton on the Northeast US Shelf.Proceedings of the National Academy of Sciences. |
MLA | Bethany L. Fowler,et al."Dynamics and functional diversity of the smallest phytoplankton on the Northeast US Shelf".Proceedings of the National Academy of Sciences (2020). |
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