Ramoni Sánchez Carmona, our head of Water and Environment R&D and doctor in Biological Sciences, has published the technical article entitled “Growth of biofouling caused by bryozoa and Cordylophora caspia in an irrigation infrastructure of the Lower Guadalquivir Valley” (in Spanish), in collaboration with the Guadalquivir Hydrographic Confederation (CHG), in TecnoAqua, portal of the water industry.
Biofouling caused by colonizing organisms in irrigation infrastructures in the Guadalquivir River Basin (Spain) is causing significant economic problems in irrigation communities. In particular, in the Community of Irrigators of the Lower Guadalquivir Valley (CRVIG) the main causes of biofouling are freshwater bryozoa and the exotic invasive species Cordylophora caspia. The lack of knowledge about the ecology and growth of this type of colonial organisms in the affected area makes it difficult to design a management strategy for this pest. This work describes, for the first time, the growth pattern of this type of biofouling in an affected CRVIG facility, providing information that can be used to design control strategies for this type of invasive organisms and, thus, reducing its effects on affected facilities and minimizing their operating costs.
These organisms are seasonal, so that they begin to develop in spring, with the rise of water temperature, and die in autumn producing forms of resistance that will withstand the unfavorable conditions of winter and will form new colonies in spring, when the favorable conditions for their growth return. Control strategies for this pest should be aimed at preventing the settlement and growth of young colonies and eliminating the forms of resistance. The performance of any treatment carried out in autumn will lose efficiency, since in that season the colonies have died naturally and different forms of resistance have already formed, which are not eliminated by the various types of treatments. Finally, it is very important to correctly manage the waste generated from cleaning, as it can spread this type of organisms.
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