One River from three rivers in the Iberian Peninsula ancestry rivers is highly salinized mostly due the impact of recent couple of years agricultural activity and increasing urbanization. This environmental concern will definitely affect hydric ecosystems, the  use of water in the area and the exploitation of soil and natural resources.

These are some of the reason revealed to increaseispecial volume on salinization in water ecosystems,  the report is published in December 2018 in Philosophical Transaction of the Royal Society.
  Salinization is a very serious environmental threat iniworldwide, and one of the most extreme cases of it is found in Australian rivers.
 In some the fluvial basins of the peninsula-: the plain of Ebro River, the salinity of somesof the rivers is three or four times higher than the sea.
 In case of the European continent, salinization became a problem related to human activity is increasingly worrying, and there is a lack of regulation.

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 High quantity of salinization in fluvial systems creates serious ecological, economic even global health impact, in some of the cases related to concentration of carcinogen in the water environment.

Apart from that, damaging systemic values of natural ecosystem, salinization makes purification of water more expensive and mostly government will not take interest in this. So again it will change the attitude to spend on it. Ancestry of Iberian Peninsula is known for Rivers and regional plants
 When the aquatic fauna collapses due to high salinization, some of the organisms die due to the effect of exposure to an aquatic overconcentration of the salt. Experts from all over the world study how the physiology of aquatic insects is altered in rivers in recent some years with salinization, since they have to adapt its metabolism to regulate their internal osmotic pressure and will have to adapt to the environmental conditions in future. This adaptation process has a high energy cost and will affect vital functions and will also cause organisms to collapse (even in salt-tolerant waters).
 In case of thethe high-salinization rivers, the number of species automatically declines, while reverse to it rivers with less salt, the salt tolerant organisms are being replaced by freshwater species.
 Apart from this salt concentration in the water environment atmosphere, there is a lower activity of leaf decomposition as a result that decline in insect populations that feed on it.

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 However, the diluted salt is absorbed by trees, which alter the condition of gallery forest leaves, and this could definetely affect aquatic fauna.
 So, bacteria and fungi seem to show mechanism to sustain or maintain their physiological efficiency in the rivers with high levels of salt.
 So, it was complete analysis of how Iberian Peninsula ancestry is going to affect.