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Illa Grossa

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Illa Grossa
Illa Grossa with visible lighthouse
Illa Grossa is located in SpainIlla GrossaIlla GrossaLocation in Spain
Geography
Coordinates39°53′50″N 0°41′00″E / 39.89722°N 0.68333°E / 39.89722; 0.68333
ArchipelagoColumbretes Islands
Adjacent toMediterranean Sea
Area0.14 km (0.054 sq mi)
Administration
Spain

Illa Grossa, ("Large Island" in Valencian) is the largest island of the Columbretes archipelago of Spain, located in the Mediterranean Sea. It has a surface area of 14 hectares, or 0.05 square miles. It sits 60 km from Costa del Azahar. The island has experienced a rifting process since the lower Miocene, and is characterized by a significant presence of basalt materials. It is the result of a number of craters forming a chain, and its shape resembles the halve of an ellipse with an average diameter of 1 km, with two main elevations. The island's highest point, located in the northern section, is called mount Colibrí or Colibre. Along with the rest of the islands of the archipelago, it belongs to the Columbretes Islands Natural Reserve.

History

The island was used as a refuge by pirates and smugglers. In the mid 19th Century, the island was set on fire in order to exterminate the large population of snakes. The snakes were endemic to the islands, and the archipelago's original names (Ophiusa or Columbraria) were given by Greek and Roman sailors due to the abundance of reptiles. In 1859, a lighthouse was built 67 m above sea level, the highest point of the archipelago. In 1895, Ludwig Von Salvator published his book Columbretes, the world's first account of the island's flora and fauna.

The lighthouse was operated by lighthouse keepers until 1975, when it was automated. In the late 1970s, the Spanish and American navies bombarded the islands as part of military exercises. The use of the islands as targets stopped in 1982, after student protests calling for an end of the bombardments pushed the Deputation of Castellón to solicit an end to the exercises, with the Spanish Ministry of Defense complying to the request. The island is uninhabited, except for guards established by the Generalitat Valenciana.

The Columbretes islands were declared a natural park by the Council of the Generalitat Valenciana through the 15/1988 decree of 25 January, and a Marine Reserve of more than 4.400 hectares by the Ministry of Agriculture, Fisheries and Food through the Ministerial Order of 19 April 1990. They were renamed a Natural Reserve by the Generalitat Valenciana through the 11/1994 Law of 27 December.

Fauna

Picture of a Columbretes lizard (Podarcis atrata)
The Columbretes lizard (Podarcis atrata)

The island is known for being the natural habitat of the Columbretes lizard (Podarcis atrata). The island is also inhabited by animals in danger of extinction, such as Eleonora's falcon and Audouin's gull.

References

  1. ^ "Geological section, Volume 65". Boletín de la Real Sociedad Española de Historia Natural: Órgano del Instituto de Ciencias Naturales José de Acosta. 1967. pp. 27–29.
  2. ^ Anuario estadístico de España. Instituto Nacional de Estadística. 1859. p. 67.
  3. Boletín Geológico y Minero. 1991.
  4. "Mar Mediterráneo". VVAA. Empresa Nacional Adaro de Investigaciones Mineras. 1971. p. 209.
  5. Ruis Iñiguez, Ignacio (1935). La tierra y sus aguas ocultas. Reglas para descubrir manantiales (2008 ed.). Valladolid: MAXTOR. p. 101. ISBN 9788497614276.
  6. "Columbretes: el secreto mejor guardado de la costa de Castellón". El Periódico. 28 May 2019. Retrieved 14 July 2020.
  7. "Columbretes: En la cresta del volcán" (PDF). Universitat Jaume I (in Spanish). Archived from the original (PDF) on 27 September 2013. Retrieved 14 July 2020.
  8. "15/1988 Decree of 25 January, of the Council of the Generalitat Valenciana, on the declaration of the Columbretes Islands Natural Park". 29 January 1988. Archived from the original on 23 September 2015. Retrieved 14 July 2020.
  9. "Orden de 19 de abril de 1990 por la que se establece una reserva marina en el entorno de las islas Columbretes". Notícias Jurídicas (in Spanish).
  10. "Ley 11/1994, de 27 de diciembre, de la Generalitat Valenciana, de espacios naturales protegidos de la Comunidad Valenciana. (DOGV núm. 2423, de 09.01.98)". Generalitat Valenciana. Archived from the original on 2015-09-11. Retrieved 2020-07-14.
  11. Castilla, Aurora M.; Bauwens, Dirk (1991). "Observations on the natural history, present status, and conservation of the insular lizard Podarcis hispanica atrata on the Columbretes archipelago, Spain". Biological Conservation. 58 (1): 69–84. doi:10.1016/0006-3207(91)90045-B.
  12. López-Darias, Maria; Rumeu, Beatriz. "Status and population trend of Eleonora's Falcon Falco eleonorae in the Canary Islands". CiteSeerX 10.1.1.662.2766.
  13. Castilla, Aurora M. (1995). "Intensive Predation of Artificial Audouin's Gull Nests by the Yellow-Legged Gull in the Columbretes Islands, Spain". Colonial Waterbirds. 18 (2). Waterbird Society: 226–230. doi:10.2307/1521487. JSTOR 1521487.
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