Estimación de la contaminación agrícola en el Mar Menor mediante un modelo dinámico

The Campo de Cartagena is an ample lowland drained by several ephemeral channels flowing into the coastal lagoon of Mar Menor, having a high ecological and tourist value. During the last decades the increment of water resources due to groundwater exploitation and the Trasvase Tajo-Segura has leaded to a considerable increment of the irrigated lands and the amount of agricultural fertilisers. In the present work a first dynamic simulation model about the irrigated lands on the Campo de Cartagena and the fertilisers transport has been built up. The effects on the natural environment and on other socio-economic uses have also been discussed. The dynamic model simulates the behaviour of the system from 1970 to nowadays and includes variables such us the area occupied by irrigated lands, the nutrients flow into the Mar Menor, the available water resources, the monthly rainfall, the fertilisers input and several leaching and retention coefficients. The results show a great increment of the fertilisers income to the Mar Menor until the current mean values of around 2000 annual tons of nitrogen and 60 annual tons of phosphorous. The final nutrients export present a clear dynamic character depending both on exogenous factors, mainly the monthly rainfall, and on endogenous factors, such us the level of fertilisers accumulated in the basin. This nutrients export has begun to generate eutrophication processes in the lagoon, being the most serious indicator the big summer proliferation of two species of jellyfish, having not only environmental effects but also socio-economic ones due to its impact on the tourist quality of the Mar Menor.

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Resource type Text
Date of creation 2024-09-17
Date of last revision 2024-09-17
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Metadata identifier 7d80a9c2-1888-51fd-8556-7e5d88afe2a4
Metadata language Spanish
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ISO 19115 topic category biota
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INSPIRE identifier ESPMITECOIEPNBMMENOR015
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Geographic identifier Murcia
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"{\"type\": \"Polygon\", \"coordinates\": [[[-2.34, 37.38], [-0.69, 37.38], [-0.69, 38.76], [-2.34, 38.76], [-2.34, 37.38]]]}"
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  1. Mediterranea: Serie de estudios biológicos
  2. Época II
  3. no 18
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Name of the dataset creator Fernández, J., Martínez, S. y Esteve, M.A.
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