@article{fdi:010079817,
  title = {{B}ridging the spatiotemporal gap in diazotroph activity and diversity with high-resolution measurements},
  author = {{B}enavides, {M}ar and {R}obidart, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he biological fixation of dinitrogen ({N}-2) by marine microbes called "diazotrophs" sustains similar to 50% new production in the ocean, boosting {CO}2 absorption by photoautotrophs and thus contributing to the mitigation of climate change. {N}ew environmental conditions sustaining {N}-2 fixation have been revealed in recent years, enabling more accurate forecasting of future nitrogen inputs and localized hot spots. {H}owever, at present the paucity and biased geographical coverage of {N}-2 fixation and diazotroph diversity measurements impede attempts to reconcile global nitrogen budgets with observed rates. {M}ost studies have been conducted at disparate spatiotemporal scales, including: (i) discrete and short duration measurements in small seawater volumes isolated from the environment, and (ii) spatial extrapolations and global models of diazotrophy projected over decades to centuries. {W}e argue that this knowledge gap lies at the fine scales: dynamic seawater structures < 200 km wide and < 2 months lifetime. {H}owever, the spatiotemporal resolution of conventional oceanographic cruises, with stations separated by tens to hundreds of kilometers, is too poor to resolve fine scale processes. {B}ridging this gap requires leveraging high spatiotemporal resolution measurements. {H}ere we present and discuss the advantages and disadvantages of contemporary methods and equipment able to provide high-resolution measurements at sea. {W}e also provide insights into high-resolution sampling approaches to be developed in the near future. {I}ncreasing the spatiotemporal resolution of diazotroph activity and diversity will provide more realistic quantifications of nitrogen fluxes in the dynamic ocean.},
  keywords = {diazotrophs ; fine scale dynamics ; physical-biological coupling ; cyanobacteria ; {N}-2 fixation},
  booktitle = {},
  journal = {{F}rontiers in {M}arine {S}cience},
  volume = {7},
  numero = {},
  pages = {568876 [9 ]},
  year = {2020},
  DOI = {10.3389/fmars.2020.568876},
  URL = {https://www.documentation.ird.fr/hor/fdi:010079817},
}