2020
DOI: 10.3389/fmars.2020.568876
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Bridging the Spatiotemporal Gap in Diazotroph Activity and Diversity With High-Resolution Measurements

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Cited by 13 publications
(5 citation statements)
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“…Our findings suggest that N 2 fixation may be underestimated not only in the Arctic, but in other upwelling coastal systems where UCYN-A thrives. More widespread application of high-resolution approaches to studying diazotrophy (Benavides and Robidart, 2020) are necessary to discern the impact of ocean physics on N 2 fixation. Doing so may be particularly important in the Arctic Ocean, where the number and intensity of upwelling events is increasing (Pickart et al, 2013)-a trend that may be exacerbated by warming-induced ice retreat.…”
Section: Discussionmentioning
confidence: 99%
“…Our findings suggest that N 2 fixation may be underestimated not only in the Arctic, but in other upwelling coastal systems where UCYN-A thrives. More widespread application of high-resolution approaches to studying diazotrophy (Benavides and Robidart, 2020) are necessary to discern the impact of ocean physics on N 2 fixation. Doing so may be particularly important in the Arctic Ocean, where the number and intensity of upwelling events is increasing (Pickart et al, 2013)-a trend that may be exacerbated by warming-induced ice retreat.…”
Section: Discussionmentioning
confidence: 99%
“…Few studies have focused on particle fluxes that occur during the interaction between nitrogen fixation and a cyclonic eddy. Previous work has shown that nitrogen fixation rates may differ spatially, especially between the EC and EE (Löscher et al 2016), as well as temporally; upon eddy formation, N 2 fixer abundance is typically reduced, with occasional cyanobacterial blooms observed during the eddy's decay stage (Doblin et al 2016; Benavides and Robidart 2020). Here, lower temperatures and higher nutrient concentrations associated with eddy passage at Station ALOHA (e.g., Huang and Xu 2018), likely reduced diazotroph abundance, which is often associated with higher temperatures and lower nutrients (Karl et al 2002).…”
Section: Discussionmentioning
confidence: 99%
“…Although anticyclonic eddies have generally been considered to benefit autotrophic diazotrophs by inhibiting vertical DIN input from deep waters (Liu et al, 2020;Fong et al, 2008;Church et al, 2009), a class of NCDs, Gammaproteobacteria, has been found to dominate diazotrophic communities inside cyclonic eddies in the South China Sea (Zhang et al, 2011;Liu et al, 2020). Different types of mesoscale eddies may have discrepancies in impacting the ecophysiology of NCDs and their autotrophic counterparts (Benavides and Robidart, 2020). Langlois et al (2015) analyzed the distribution of the Gamma A phylotype in the Pacific and Atlantic oceans and suggested that Gamma A prefers warm and oligotrophic surface oceans.…”
Section: Introductionmentioning
confidence: 99%