Three decades of marine bioregions evolution through analysis of phytoplankton phenology
Abstract
Ocean biogeochemistry is undergoing significant modification in response to climate change. To better track these evolutions, we present a novel ocean monitoring indicator that follows the temporal evolution of marine bioregions of similar phytoplankton phenologies. Chlorophyll a concentration observations from remotely sensed ocean color describe seven distinct marine bioregions characterized by their unique patterns of phytoplankton biomass seasonality. The sizes and locations of these bioregions are monitored from 1998 to 2024 using a multi-sensor merged L4 ocean color product. While the bioregions' extents appear to follow interannual and decadal climate variability, their long term evolution suggests a poleward extension of less seasonal phytoplankton phenology, which is generally characteristic of the tropical and subtropical bands. This innovative approach allows the systematic monitoring of how phytoplankton adapt their seasonal cycle in response to changes in environmental conditions, hence giving valuable insights into the evolution of marine ecosystems over the past three decades and helping advance our understanding of global ocean biological responses to environmental change.
Related
- Spatiotemporal evolution and driving factors of ecological risks in the Wujiang River Basin over the past four decades
- Spatiotemporal evolution and drivers of diurnal temperature range extremes in recent decades
- All-weather lake-ice phenology from Sentinel-1 and reanalysis thermodynamics: a validated, transferable method applied to 131 Adirondack lakes
- The phenology of the European flat oyster (Ostrea edulis) and its environmental drivers
- Secular evolution of marine carbonate δ⁶⁶Zn and its implications for nutrient cycling through time
BibTeX
@article{riom2026three,
title = {{Three decades of marine bioregions evolution through analysis of phytoplankton phenology}},
author = {Wilhem Riom and Nicolas Mayot and Alexandre Mignot and Vincent Taillandier and Fabrizio d'Ortenzio},
journal = {State of the Planet},
year = {2026},
month = sep,
doi = {10.5194/sp-7-osr10-4-2026},
url = {https://hal.science/hal-05800558v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Three decades of marine bioregions evolution through analysis of phytoplankton phenology
AU - Wilhem Riom
AU - Nicolas Mayot
AU - Alexandre Mignot
AU - Vincent Taillandier
AU - Fabrizio d'Ortenzio
PY - 2026
DA - 2026/09/30
JO - State of the Planet
DO - 10.5194/sp-7-osr10-4-2026
UR - https://hal.science/hal-05800558v1
AB - Ocean biogeochemistry is undergoing significant modification in response to climate change. To better track these evolutions, we present a novel ocean monitoring indicator that follows the temporal evolution of marine bioregions of similar phytoplankton phenologies. Chlorophyll a concentration observations from remotely sensed ocean color describe seven distinct marine bioregions characterized by their unique patterns of phytoplankton biomass seasonality. The sizes and locations of these bioregions are monitored from 1998 to 2024 using a multi-sensor merged L4 ocean color product. While the bioregions' extents appear to follow interannual and decadal climate variability, their long term evolution suggests a poleward extension of less seasonal phytoplankton phenology, which is generally characteristic of the tropical and subtropical bands. This innovative approach allows the systematic monitoring of how phytoplankton adapt their seasonal cycle in response to changes in environmental conditions, hence giving valuable insights into the evolution of marine ecosystems over the past three decades and helping advance our understanding of global ocean biological responses to environmental change.
SN - 2752-0706
SN - 2752-0714
ER -