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Updated: May 13, 2026

Watershed Planning within a Quantitative Scenario Analysis Framework
Published on: July 24, 2016
Could an abandoned mercury mine area be cropped?
Millán Rocio1, Esteban Elvira, Zornoza Pilar
1Departamento de Medio Ambiente, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avenida Complutense 40, 28040 Madrid, Spain. rocio.millan@ciemat.es
This study assesses safe agricultural land use in mercury-contaminated Almadén, Spain. Results guide crop selection for safe human and animal consumption, supporting sustainable land management.
Area of Science:
- Environmental Science
- Agronomy
- Toxicology
Background:
- Almadén, Spain, exhibits high natural mercury levels and historical mining contamination.
- Post-mining land requires sustainable and safe alternative uses, with agriculture being a viable option.
Purpose of the Study:
- To evaluate the suitability of various crops for agricultural use in mercury-affected soils.
- To provide a scientific basis for safe land use recommendations compliant with international legislation.
Main Methods:
- Experiments were conducted at multiple scales: hydroponics, pot studies, and lysimeters.
- Mercury accumulation was assessed in different plant parts and crop types.
Main Results:
- Seeds and fruits of tested crops are safe for human and animal consumption.
- Vegetative organs of certain crops showed higher mercury accumulation, posing a risk for animal feed.
Conclusions:
- Cultivation of specific crops is recommended for safe agricultural use in mercury-contaminated areas.
- Findings support sustainable land management and inform policy on safe agricultural practices.
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