These results can possibly be explained by the ban of simazine
and atrazine in Europe in 2004, and their finalwithdrawal fromthe
market in Spain and Portugal in 2007.
The decrease in the levels of diuron may be explained by its prohibition in 2007
In the case of the olive groves, the diuron herbicide was
substituted for terbuthylazine, which has better environmental properties,
such as shorter persistence time and lower toxicity
The remaining analysed compounds showed a strong agreement
among the studies.
The results of the spatial evaluation from both
studies showed that the northern area of the Alqueva reservoir was
themost affected by pesticide contamination, demonstrating an intense
environmental impact from Spanish agricultural activities. Sra. Ajuda
and Lucefécit had the highest levels of pesticides, which indicate that,
in future works, these sampling locationsmust continue to be assessed.
These results can possibly be explained by the ban of simazine
and atrazine in Europe in 2004, and their finalwithdrawal fromthe
market in Spain and Portugal in 2007.
The decrease in the levels of diuron may be explained by its prohibition in 2007
In the case of the olive groves, the diuron herbicide was
substituted for terbuthylazine, which has better environmental properties,
such as shorter persistence time and lower toxicity
The remaining analysed compounds showed a strong agreement
among the studies.
The results of the spatial evaluation from both
studies showed that the northern area of the Alqueva reservoir was
themost affected by pesticide contamination, demonstrating an intense
environmental impact from Spanish agricultural activities. Sra. Ajuda
and Lucefécit had the highest levels of pesticides, which indicate that,
in future works, these sampling locationsmust continue to be assessed.
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