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Updated: Feb 11, 2026

The Barnacle Balanus improvisus as a Marine Model - Culturing and Gene Expression
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Reducing marine eutrophication may require a paradigmatic change.

X Desmit1, V Thieu2, G Billen2

  • 1RBINS (Royal Belgian Institute of Natural Sciences), Operational Directorate Natural Environment, Brussels, Belgium.

The Science of the Total Environment
|May 2, 2018
PubMed
Summary
This summary is machine-generated.

Reducing nutrient emissions from land to sea is possible through watershed management and dietary shifts. This can mitigate marine eutrophication in the North-East Atlantic (NEA) without compromising food security.

Keywords:
EutrophicationLand useLand-sea continuumManagement supportModel scenariosNorth-East AtlanticPristine

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Area of Science:

  • Environmental Science
  • Eutrophication Studies
  • Agro-ecosystem Modeling

Background:

  • Marine eutrophication in the North-East Atlantic (NEA) is driven by nutrient enrichment from rivers, linked to human activities and land use.
  • Assessing the potential for reducing nutrient emissions through land-use changes without impacting food security is crucial.

Purpose of the Study:

  • To model nutrient emissions from Western European watersheds and their impact on NEA marine ecosystems.
  • To quantify the effects of land-use changes on marine eutrophication and explore mitigation strategies.

Main Methods:

  • Utilized the pyNuts-Riverstrahler model to estimate nutrient (N, P, Si) emissions based on land use.
  • Integrated riverine nutrient loads into marine ecological models (PCOMS, ECO-MARS3D, MIRO&CO) for the NEA.
  • Simulated pristine conditions and three management scenarios to assess eutrophication mitigation.

Main Results:

  • Significant reduction in nitrogen fluxes from land to sea is achievable via adapted human activities in watersheds.
  • Eutrophication symptoms in NEA rivers and coastal zones can be partially prevented.
  • Achieving substantial mitigation requires systemic changes in social, economic, and agricultural practices, including dietary shifts.

Conclusions:

  • Adapting land use and human activities in watersheds can decrease nutrient runoff and alleviate marine eutrophication.
  • Paradigmatic shifts in agriculture, food consumption (e.g., demitarian diet), and waste reduction are necessary for effective eutrophication management.
  • Integrated land-ocean modeling provides a framework for evaluating the impact of human activities on marine ecosystems and developing sustainable solutions.