The PSOE brings the problems of invasive species from the wetland to the Courts
Ask again that the act of a comprehensive and urgent to put an end to this plague of tents, including in the Catalogue Spanish of invasive alien species.
The Natural Park of El Hondo is faced with several problems that are causing their degradation is slow and continuously endangering their biodiversity in their species of birds, fish and plants. One of them is the overpopulation of the common carp considered by the International Union for Conservation of Nature (IUCN) as one of the 100 invasive species more harmful to the world. The ecological impact of this invasive species threatens not only the viability of its wildlife, but the ecological balance.
as Well expose both the socialist parliamentary group has submitted a law proposal to draw up a plan of eradication and control of the common carp in the Natural Park, while the association of Friends of the Humedales South of Alicante (AHSA) call for new action at the global and urgent to put an end to this plague of tents, including in the Catalogue Spanish of invasive alien species.
recent scientific studies confirm that there is a direct relationship between the increase of the population of the common carp and the gradual reduction of aquatic birds in mediterranean wetlands, with particularly severe impact on some species that are catalogued as in danger of extinction, point.
Between them and direct some of the birds most adversely affected by the presence of the carp in the Deep is the ruddy bald and the pochard european species catalogued as endangered by the IUCN , in danger of extinction. These species are in the wet zone suralicantina one of their last strongholds for the species in Europe.
Both the PSOE as AHSA point that have been dried at different times of the ponds of The Deep to eradicate the carp population. However to date, the actions that have been carried out have not been sufficient to control the degradation of the habitat of the common carp in the reservoirs owned by the Community of Riegos de Levante.
Explain that the tent gets its food by removing and filtering the mud of the bottoms of rivers and lagoons, and when it is very abundant increases the turbidity of the water due to the mud in suspension, preventing the arrival of light to aquatic vegetation. In addition to being deposited on the leaves, choking and end up cause their total disappearance.
"The massive presence of tents and the lack of vegetation drastically reduces the density of aquatic invertebrates, the base of the food next to the macrophytes, the aquatic birds non-piscivorous," they explain.
The PSOE intends with his proposal for approval of a plan of eradication and control of common carp in the Natural Park, following debate in the Committee of Environment, Water and spatial Planning. And remember that the decline in bird life is reflected in the censuses of the own Department of the environment in terms of the decline in the populations of aquatic birds non-piscivorous. This fact has been verified in addition by environmental groups and bird watchers from several years ago.
The petitions were supported in a study conducted by Alberto Maceda of the Institute of Biodiversity Research of the University of Barcelona, and by Raquel Lopez and Andy J. Green, of the Biological Station of Doñana where it "clearly demonstrates" the ecological impact of carp on the aquatic birds in the lagoons in the mediterranean in general. It also outlines that due to its large adaptation to the tent has the ability to occupy a broad spectrum of habitats, even the most degraded. About it shows that this species has a preference for living in calm waters with a certain load of nutrients of natural origin or derived from the entry of contaminated water (for example, by agricultural fertilizers), and by feeding the carp alters even more the dynamic nature of these gaps, to the point that you can get to remove the carpet of aquatic plants so characteristic of these lake environments.
in Addition reduces the abundance of many invertebrates, that use them as refuge and that are the food of the birds.
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Publish Date : 19 Kasım 2018 Pazartesi 20:00
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