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<p>Phytoplankton community composition plays a key role in oceanic productivity and in the biological carbon pump. A few in situ surveys documented the structuring role of fine-scale physical structures (1-100 km, day-weeks), such as fronts, on phytoplankton communities. These studies were primarily conducted in highly productive and dynamic regions rather than in oligotrophic and moderate energy conditions commonly found in the global ocean, partly due to challenges in tracking and sampling weaker fronts at high-resolution. Guided by novel SWOT (Surface Water Ocean Topography) altimetry, we used an adaptive and multidisciplinary strategy to conduct high-resolution sampling of a fine-scale front in the oligotrophic Mediterranean Sea. An unprecedented 24-hour continuous sampling within the front was crucial to unveiling a distinct frontal community, where the relative contribution of non-dominant phytoplankton groups increased relative to adjacent water masses. Our results statistically demonstrate that fine-scale features can enhance phytoplankton heterogeneity and community diversity in oligotrophic, moderately energetic regions.</p>

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Fine-scale observations reveal distinct frontal phytoplankton communities

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月29日

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  • Laurina Oms,
  • Andrea Doglioli,
  • Monique Messié,
  • Francesco d’Ovidio,
  • Xavier Capet,
  • Louise Rousselet,
  • Aude Joel,
  • Lloyd Izard,
  • Marina Lévy,
  • Maristella Berta,
  • Anne Petrenko,
  • Marco Bellacicco,
  • Stéphanie Barrillon,
  • Ludivine Grand,
  • Elvira Pulido-Villena,
  • Sandra Nunige,
  • Karine Leblanc,
  • Blandine Courtois,
  • Wuchang Zhang,
  • Gérald Grégori

摘要

Phytoplankton community composition plays a key role in oceanic productivity and in the biological carbon pump. A few in situ surveys documented the structuring role of fine-scale physical structures (1-100 km, day-weeks), such as fronts, on phytoplankton communities. These studies were primarily conducted in highly productive and dynamic regions rather than in oligotrophic and moderate energy conditions commonly found in the global ocean, partly due to challenges in tracking and sampling weaker fronts at high-resolution. Guided by novel SWOT (Surface Water Ocean Topography) altimetry, we used an adaptive and multidisciplinary strategy to conduct high-resolution sampling of a fine-scale front in the oligotrophic Mediterranean Sea. An unprecedented 24-hour continuous sampling within the front was crucial to unveiling a distinct frontal community, where the relative contribution of non-dominant phytoplankton groups increased relative to adjacent water masses. Our results statistically demonstrate that fine-scale features can enhance phytoplankton heterogeneity and community diversity in oligotrophic, moderately energetic regions.