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NACEDERO DEL UREDERRA
How has this relay been formed?
GEOLOGY
The limestone rock is formed by the remains of living beings that lived in the sea that 65 million years ago covered the area where the Natural Park is now located. The remains of those beings: corals, crustaceans and fish, accumulated on the seabed, were compacted by the pressure of the water and were transformed into limestone rock.
The exterior and interior relief of the Park is configured by the characteristic forms of the relief, sinkholes and grapevines on the exterior, chasms and caverns, stalactites and stalagmites in the interior, all of them originated by the water that chemically reacts with the dissolving limestone.
The exterior and interior relief of the Park is configured by the characteristic forms of the relief, sinkholes and grapevines on the exterior, chasms and caverns, stalactites and stalagmites in the interior, all of them originated by the water that chemically reacts with the dissolving limestone.
What typical shapes can be found?
At the source of the urederra there is an aquifer formed in the karst massif of Urbasa. When this aquifer goes outside, it forms the source. It is produced in the wall, almost cut, at the end of the Baquedano area, at an altitude of about 630 meters compared to the more than 900 meters that the upper crest of said wall reaches. We can also find a waterfall that, although not too large, is very beautiful in contrast to the landscape. We can find a large pot or pool formed by the rotating action of some rocks in practically the entire source.
What other important geological formations are there in the area?
The exterior and interior relief of the Park is shaped by the characteristic forms of karst relief: sinkholes and uvales on the outside, chasms and caverns, stalactites and stalagmites in the interior, the territories of the Natural Park, there is hardly any surface water, only a few streams or ravines. The three main outlets of the subway aquifers of the Natural Park - Nacedero del Urederra and annually provide an average of 296 cubic hectometers of water, sufficient volume to supply the consumption of more than 25% of the population of Navarra.
The limestone rock is formed by the remains of living beings that lived in the sea that 65 million years ago covered the area where the Natural Park is now located.
The limestone rock is formed by the remains of living beings that lived in the sea that 65 million years ago covered the area where the Natural Park is now located.
What type of rocks predominate in the soil, and indicate their importance?
Although the parent rock is predominantly limestone and the landscape shows clear signs of it. Given that the predominant materials in the area are acidic. (sandstones ... ) There are also rocks moss urederra transparent water urederra
ecosystem
Describes the main biotic and abiotic factors of the ecosystem
Biotics: Fish Although the Ega and Urederra rivers are characterized by the dominance of trout the madrilla and the vermilion also stand out. Regarding amphibians, the most notable species for their cataloging are the marbled newt and the common midwife toad. Among the reptiles it is worth mentioning the green lizard and the European smooth snake). Among the birds associated with the peregrine falcon and mammals, the most notable species present in the SCI are the otter and the European mink. On plants we find oaks, rowan, maples, beech, ash, mountain elm, trembling, willows, Abiotic: The abundance of scree, cliffs, quarries, and rocky ledges.
trophic net
Flora and fauna
Flora:
beech trees: this tree lasts approximately 250 years of life and can reach 35-40 meters, it has a straight and unbranched trunk, and an oval crown in its upper third.
Oak trees. Oak represents longevity, strength and size and is considered to be the king of trees. It measures between 4-12 meters in height and stands out for its wide crown and strong branches.
Elm trees: Elm trees are deciduous trees. They have alternate, simple and serrated leaves, generally asymmetrical at the base. They are hermaphrodites without petals and with a persistent calyx. Its fruits are samaras.
Maple: the maple has 160 species, its leaves are decorative all year round, but especially in autumn. The flowers, which turn red, yellow and orange,
Yew trees: grows in mountainous areas. They are plants of great longevity, reaching more than 2000 years and 20 meters in height.
Hazelnuts: Europe and Asia that produce the hazelnut. It can be a wild tree or cultivated for its nuts.
beech trees: this tree lasts approximately 250 years of life and can reach 35-40 meters, it has a straight and unbranched trunk, and an oval crown in its upper third.
Oak trees. Oak represents longevity, strength and size and is considered to be the king of trees. It measures between 4-12 meters in height and stands out for its wide crown and strong branches.
Elm trees: Elm trees are deciduous trees. They have alternate, simple and serrated leaves, generally asymmetrical at the base. They are hermaphrodites without petals and with a persistent calyx. Its fruits are samaras.
Maple: the maple has 160 species, its leaves are decorative all year round, but especially in autumn. The flowers, which turn red, yellow and orange,
Yew trees: grows in mountainous areas. They are plants of great longevity, reaching more than 2000 years and 20 meters in height.
Hazelnuts: Europe and Asia that produce the hazelnut. It can be a wild tree or cultivated for its nuts.
Fauna:
The source of the urederra houses areas of breeding, food and shelter for numerous animal species in danger of extinction, including:
Otter: Otters are great swimmers that can stay underwater for up to 4 minutes and can move up to 12 km / h
Kingfisher: Small, robust, brightly colored birds like "flying jewels" found along rivers. The upper parts are greenish-blue and turquoise; the underparts are orange.
Butterflies: they are flying insects, they have 2 wings and are full of colorful scales, they are very easy to see in the field
Egyptian vulture: It is a bird that has suffered from a shortage of food resources and an incomprehensible persecution by ranchers and hunters are at the origin of the problem, especially because this medium scavenger is particularly sensitive to the effect of illegal poisons, which are being sown lately. in our fields by an irresponsible few.
Bearded vulture: it is a bird that is in serious danger of extinction that has disappeared from several regions where it was previously abundant.
The source of the urederra houses areas of breeding, food and shelter for numerous animal species in danger of extinction, including:
Otter: Otters are great swimmers that can stay underwater for up to 4 minutes and can move up to 12 km / h
Kingfisher: Small, robust, brightly colored birds like "flying jewels" found along rivers. The upper parts are greenish-blue and turquoise; the underparts are orange.
Butterflies: they are flying insects, they have 2 wings and are full of colorful scales, they are very easy to see in the field
Egyptian vulture: It is a bird that has suffered from a shortage of food resources and an incomprehensible persecution by ranchers and hunters are at the origin of the problem, especially because this medium scavenger is particularly sensitive to the effect of illegal poisons, which are being sown lately. in our fields by an irresponsible few.
Bearded vulture: it is a bird that is in serious danger of extinction that has disappeared from several regions where it was previously abundant.
What effect does the current climate have on the area?
It is a great plain without great unevenness, but there are important climatic differences within the different parts of the extension of the park itself.
In the northern part, it is the most humid and rainy area of the entire Sierra de Urbasa and Sierra de Andía, and it is the area with the highest rainfall in the entire "Comarca de Urbasa Estella" (region of Urbasa Estella).
In the northern part, it is the most humid and rainy area of the entire Sierra de Urbasa and Sierra de Andía, and it is the area with the highest rainfall in the entire "Comarca de Urbasa Estella" (region of Urbasa Estella).
What effect do humans have on the ecosystem?
In 2018, the registration of the pastures of Urbasa and Andía within the Organic Farming Certificate of Navarre (CPAEN) was completed.
In terms of forestry, in 2017 the revision of the forestry management project for the Sierra de Urbasa was completed.
In terms of the environment, the main species of flora and fauna continued to be monitored, as well as a specific study of amphibians and reptiles.
For 2018, it is planned to continue investing in the improvement of infrastructures.
In terms of forestry, in 2017 the revision of the forestry management project for the Sierra de Urbasa was completed.
In terms of the environment, the main species of flora and fauna continued to be monitored, as well as a specific study of amphibians and reptiles.
For 2018, it is planned to continue investing in the improvement of infrastructures.