Cantabrian brown bear

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Cantabrian brown bear
Ursus arctos 5.jpg
Female bear with cub at Muniellos Nature Reserve, Asturias, Spain
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Ursidae
Genus: Ursus
Species: U. arctos
Subspecies: U. a. arctos
Population:Cantabrian brown bear
Synonyms

Ursus arctos pyrenaicus

The Cantabrian brown bear, Iberian brown bear, or Iberian bear (formerly Ursus arctos pyrenaicus) is a population of Eurasian brown bears (Ursus arctos arctos) living in the Cantabrian Mountains of Spain.

Contents

In Spain, it is known as the Oso pardo cantábrico and, more locally, in Asturias as Osu. It is timid and will avoid human contact whenever possible. The Cantabrian brown bear can live for around 25–30 years in the wild.

The bear measures between 1.6 and 2 m (5.2 and 6.6 ft) in length, and between 0.90 and 1 m (3.0 and 3.3 ft) at shoulder height. On average, females weigh 85 kg (187 lb), but can reach a weight of 150 kg (330 lb). Males average 115 kg (254 lb), though they can weigh as much as 200 kg (440 lb).

Evolution

Believed to have originated in Asia, the brown bear ( Ursus arctos , L. 1758) spread across the Northern Hemisphere, colonising much of the Eurasian land mass as well as North America. [2] [3] [4]

A 1914 lithography of a Cantabrian brown bear, Museo Nacional de Ciencias Naturales Ursus Arctos Pyrenaicus litografia.jpg
A 1914 lithography of a Cantabrian brown bear, Museo Nacional de Ciencias Naturales

Experts on bears are continuing debate on the scientific classification of bears, of which there are currently eight recognised species although some experts recognise more subspecies. In the early 20th century, Cabrera (1914) considered the Cantabrian brown bear to be a distinct subspecies of European brown bear (U. a. arctos; in itself a classification currently under debate) and named it Ursus arctos pyrenaicus (Fischer, 1829), characterised by the yellow colouring of the points of its hair and by its black paws.

Since then, however, phylogenetic and mitochondrial DNA research has led to the general scientific consensus that the European brown bear is not a separate subspecies. These recent studies have also found that the European populations fall into two major genetic lineages; an eastern type and a western type. [5]

Monument to the Cantabrian brown bear at Vega de Liebana Monumento al oso pardo en el Collado de Llesba.jpg
Monument to the Cantabrian brown bear at Vega de Liébana

The Cantabrian brown bear forms a part of the western type, the effective barriers of the Pleistocene ice sheets of the Alps and the Balkans having directed the spread of the brown bear respectively, north and eastwards and south and westwards. A further distinction of the two clades has been made within the western lineage following post-glacial recolonisation after the Last Glacial Maximum (LGM); one consisting of the bear populations of Southern Scandinavia, the Pyrenees and Cantabrian Mountains of Northern Spain and the other consisting of the bear populations of the Southern Alps, the Apennines, the Dinaric Alps, the Rila Mountains, the Rhodope Mountains and the Stara Planina Mountains. [6] This leaves the remnant population of brown bears in the south of Sweden as the nearest relatives of the Cantabrian brown bear. The last indigenous, reproductive female in the Pyrenees, Canelle, was shot by a hunter in 2004. Brown bears from Slovenia are now being introduced to the Pyrenees.

Geographic distribution

Having once roamed most of the Iberian peninsula, since the first half of the 20th century the Cantabrian brown bear has been reduced to two isolated populations in the Cantabrian mountains of Northern Spain, primarily through human persecution (direct hunting) and by loss of habitat due to agriculture and construction. These two populations occupy a combined territory total of 5,000–7,000 km2 covering the provinces of, in the West, Asturias, León and Lugo (Galicia) and, in the east, Palencia, León, Cantabria and Asturias. Population figures from 2007 gave 100–110 bears in the western enclave and 20–30 in the eastern, a situation which put the smaller population at risk from in-breeding. The two populations are separated by some 30–40 km, a rupture which has been interpreted as the consequence of human pressure such as the development of communication infrastructures. However, in 2008 genetic evidence was obtained from Redes Natural Park indicating recent interbreeding between the two populations. [7]

A view of the Cantabrian Mountains, habitat of the bear Desfiladero de la Hermida 001.JPG
A view of the Cantabrian Mountains, habitat of the bear

In 2005 the presence of brown bears was reported near the Portuguese border (less than 20 km (12 mi)) on the Trevinca range, based on footprints left on a big mud pad. In 2019, one brown bear was confirmed by the Portuguese authorities to have roamed across the border, and evidence suggests this was not an isolated event, as footprints from the early months of the year and local sightings confirm. [8] Bears had not been seen in Portugal for over a hundred years and were believed extinct.[ citation needed ]

Protection status

The Cantabrian brown bear is catalogued on the Spanish Red List of Endangered Species as in danger of extinction. In Europe it is listed in the European Mammal Assessment as critically endangered. On an international level, it is listed on the IUCN Red List of Threatened Species as being of least concern due to the existence of relatively healthy populations of brown bears elsewhere. In Spain there is a maximum fine of €300,000 for killing a bear following a ban on hunting of the species in 1973.[ citation needed ]

Threats

In the smaller eastern population, endogamy has led to genetic complications including the higher probability of birth defects and a higher ratio of male to female births (more males than females). Added to this is the extreme philopatry usually exhibited by female brown bears which leads to a very slow dispersal rate of reproductive females. Another present threat comes in the form of the EU's bovine spongiform encephalopathy (BSE) laws which are enforcing the removal of carcasses from the countryside. [9] Though only a small part of the Cantabrian brown bear's mainly vegetarian diet, carrion is very important for the building of fat reserves ready for the winter and, in spring, is a vital source of sustenance following the rigours of the winter. It is hoped that these disease containment measures will be revised following a meeting of concerned Spanish environmentalists with the European Commission in October 2007. There has been concern that recent mild winters, possibly due to climate change, have not been severe enough to necessitate hibernation. However, the bears are sometimes active during cold winter weather for reasons which are not entirely clear. [10]

Cantabrian brown bears in captivity at Cabarceno Cantabrian brown bears at Cabarceno.jpg
Cantabrian brown bears in captivity at Cabárceno

Man-made infrastructures such as roads and railways inhibit the population growth of the Cantabrian brown bear. The most recent human threat is a proposal to build a ski/winter leisure resort in the San Glorio pass, a site in the eastern region of the bears' habitat. Despite the fact that Spain's ministry of the environment, in its Catálogo Nacional de Especies Amenazadas, [11] lists the brown bear as in danger of extinction in Spain, and the existence of heavy fines aimed at protecting the few remaining bears, hardly a year passes without yet another bear having been killed by human intervention. According to an article published December 2007 in the Spanish national daily El País , [12] eight brown bears had been killed, either by poisoned bait or illegal hunting, in the Cantabrian Mountains since the year 2000.

Conservation

An "Action Plan for the Conservation of the Brown Bear (Ursus arctos) in Europe", published in 2000, made specific recommendations for the management of bears in Spain. [13]

The Spanish Ministry of the Environment had previously drawn up a "Plan para la Recuperación del Oso Pardo" (Plan for the Recovery of the Brown Bear) with the intention of saving the species from extinction by coordinating conservation efforts across the autonomous communities in which it currently lives. Among the responsibilities of regional governments are various natural parks which provide suitable habitat for bears. Bears appear not to have a permanent presence in the only national park in the Cantabrian mountains, the Picos de Europe National Park.[ according to whom? ]As of 2014 the population was estimated at 300 bears. [14]

Alpha male bear (left) and his herd at Cabarceno Ososcabarceno.JPG
Alpha male bear (left) and his herd at Cabárceno

Bear habitat is monitored by patrols and education programmes are underway, particularly among the young but also among hunting groups. A project of photo "trapping" is enjoying success and another of radio-tracking individuals is being considered. Apart from continuing scientific research, conservation efforts currently centre on joining the two sub-populations of Spanish bears in order to create a viable population. Conservation groups are working to enhance centuries-old corridors used by the bears and are planting fruit trees and siting beehives to supplement their diet. There has been support for corridors from the EU LIFE programme focussing on a corridor between the two subpopulations and a corridor out of Somiedo Natural Park. [15] UNESCO's proposed integration of existing Cantabrian biosphere reserves within a Gran Cantábrica super-reserve is also intended to help the bears expand their range via, for example, the comarca of Os Ancares. [16]

See also

Related Research Articles

<span class="mw-page-title-main">Brown bear</span> Species of large bear found across Eurasia and North America

The brown bear is a large bear species found across Eurasia and North America. It is one of the largest living terrestrial members of the order Carnivora, rivaled in size only by its closest relative, the polar bear, which is much less variable in size and slightly bigger on average. The brown bear's range includes parts of Russia, Central Asia, the Himalayas, China, Canada, the United States, Hokkaido, Scandinavia, Finland, the Balkans, the Picos de Europa and the Carpathian region, Iran, Anatolia, and the Caucasus. The brown bear is recognized as a national and state animal in several European countries. In North America, the populations of brown bears are called grizzly bears, while the subspecies that inhabits the Kodiak Islands of Alaska is known as the Kodiak bear.

<span class="mw-page-title-main">Picos de Europa</span> Mountain range in Spain

The Picos de Europa are a mountain range extending for about 20 km (12 mi), forming part of the Cantabrian Mountains in northern Spain. The range is situated in the Autonomous Communities of Asturias, Cantabria and Castile and León. The highest peak is Torre de Cerredo, at an elevation of 2650 m (8,690 ft).

<span class="mw-page-title-main">Cantabrian Mountains</span> Mountain range in Spain

The Cantabrian Mountains or Cantabrian Range are one of the main systems of mountain ranges in Spain. They stretch for over 300 km (180 miles) across northern Spain, from the western limit of the Pyrenees to the Galician Massif in Galicia, along the coast of the Cantabrian Sea. Their easternmost end meets the Sistema Ibérico.

<span class="mw-page-title-main">Eurasian brown bear</span> Subspecies of carnivore

The Eurasian brown bear is one of the most common subspecies of the brown bear, and is found in much of Eurasia. It is also called the European brown bear, common brown bear, common bear, and colloquially by many other names. The genetic diversity of present-day brown bears has been extensively studied over the years and appears to be geographically structured into five main clades based upon analysis of the mtDNA.

<span class="mw-page-title-main">Gobi bear</span> Subspecies of carnivore

The Gobi bear, known in Mongolian as the Mazaalai (Мазаалай), is a subspecies of the brown bear that is found in the Gobi Desert of Mongolia. It is listed as critically endangered by the Mongolian Redbook of Endangered Species and by IUCN standards. Currently, there are only 31 bears left in the Mongolian Gobi Desert, which results are based on the long-term genetic monitoring and the population is relatively stable, however, the sex ratio is highly skewed towards to males. Gobi bears are separated by enough distance from other brown bear populations to achieve reproductive isolation. In 1959, hunting of the animal was prohibited in order to preserve the dying subspecies.

<span class="mw-page-title-main">Marsican brown bear</span> Subspecies of carnivore

The Marsican brown bear, also known as the Apennine brown bear, and orso bruno marsicano in Italian, is a critically endangered population of the Eurasian brown bear, with a range restricted to the Parco Nazionale d'Abruzzo, Lazio e Molise, and the surrounding region in Italy. The Marsican brown bear differs slightly from other brown bears in its appearance and hibernation techniques. The bear's popular name is derived from Marsica, a historic area of the modern-day region of Abruzzo where the bear has long had a significant presence.

<span class="mw-page-title-main">San Glorio</span> Mountain pass in Spain

San Glorio is a mountain pass in the Cantabrian Mountains of Northern Spain. The pass reaches an elevation of 1610 meters along the national highway N621 which connects the city of León with Cantabria and which passes through Asturias. The pass is situated some 800m from the southern border of the Picos de Europa National Park, a park included in UNESCO's World Network of Biosphere Reserves and shared by the provinces of León, Asturias and Cantabria. The valleys of this part of the Cantabrian Mountains include sites in the European Union's Natura 2000 network and Special Protection Areas for the conservation of wild birds. San Glorio is used as a corridor by the Cantabrian brown bear Ursus arctos, catalogued in Spain as being in danger of extinction. Moreover, the slopes of the glacial valleys making up the surrounding region are home to an important variety of plant life.

<span class="mw-page-title-main">Bear conservation</span>

Bear conservation refers to the management of bears and their habitat with a view to preventing their extinction.

<span class="mw-page-title-main">Bear hunting</span> Hunting of real bear

Bear hunting is the act of hunting bears. Bear have been hunted since prehistoric times for their meat and fur. In addition to being a source of food, in modern times they have been favored by big game hunters due to their size and ferocity. Bear hunting has a vast history throughout Europe and North America, and hunting practices have varied based on location and type of bear.

<span class="mw-page-title-main">Redes Natural Park</span> Nature park in Spain

The Redes Natural Park is located in the Principality of Asturias in northern Spain. Its total area is 377.36 km2 (145.70 sq mi), split between two municipalities: Caso and Sobrescobio. It was declared a natural park in 1996.

<span class="mw-page-title-main">Somiedo Natural Park</span> Natural park and protected area in Spain

Somiedo Natural Park is a protected area located in the central area of the Cantabrian Mountains in the Principality of Asturias in northern Spain. As well as being designated a natural park, it is protected as a Special Area of Conservation, and as one of a number of Biosphere Reserves in the Cantabrian mountains.(see note)

<span class="mw-page-title-main">Montaña Palentina Natural Park</span> Natural park in Spain

Montaña Palentina is a natural park in the north of the province of Palencia in Castile and León, Spain.

The Cantabrian capercaillie is a subspecies of the western capercaillie in the grouse family Tetraonidae. It is one of two subspecies found in Spain.

<span class="mw-page-title-main">Cantabrian Water Dog</span> Dog breed

The Cantabrian Water Dog is a landrace breed of dog developed in the coast of Cantabria, northern Spain, as an assistant to fishermen. The breed was classified and recognized by the Breeds Committee of the Spanish Ministry of Environment on 22 March 2011. It is recognised by the Royal Canine Society of Spain as a variety of the Spanish water dog.

The Muniellos Nature Reserve is a protected area of woodland in Asturias, Spain. The area of the nature reserve is 5,488 ha. The main species of tree is oak: it has been described as probably the best preserved Quercus robur forest in Spain.

<span class="mw-page-title-main">Cantabrian chamois</span> Subspecies of mammal

The Cantabrian chamois is a slim mountain goat-antelope, and is one of the 10 subspecies of the genus Rupicapra. It ranges the Cantabrian Mountains in northern Spain, with a population of 17,000 animals in 2007-2008.

Formerly or currently considered subspecies or populations of brown bears have been listed as follows:

<span class="mw-page-title-main">Cantabrian mixed forests</span>

The Cantabrian mixed forests is a temperate broadleaf and mixed forests ecoregion in southwestern Europe. It extends along the coastal Cantabrian Mountains and Galician Massif of Northern Spain, extending south into northern Portugal, and northwards through the westernmost Pyrenees to southwestern France. The ecoregion extends from the seacoast to the highest peaks of the Cantabrian Mountains. The highest peak is Torre Cerredo at 2,648 meters elevation.

<span class="mw-page-title-main">Pyrenees conifer and mixed forests</span>

The Pyrenees conifer and mixed forests is a temperate broadleaf and mixed forests ecoregion in southwestern Europe. It extends along the Pyrenees mountains which run east and west along the border between France and Spain, and includes all Andorra. The ecoregion extends from the lower slopes of the Pyrenees to its highest peaks, which include Aneto, Posets, and Vignemale.

<span class="mw-page-title-main">Distribution of brown bears</span>

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References

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  8. "First brown bear sighting in Portugal in over a century". France 24. 2019-05-09.
  9. Problem of necrophagous birds in Spain because of shortage of natural food: a serious threat to biodiversity (PDF), Council of the European Union, 24 October 2007
  10. Fotheringham, Alasdair (2013-03-12). "Postcard from... Cantabria". The Independent . London. Retrieved March 15, 2013.
  11. Ministerio de Medio Ambiente:Biodiversity:Conservation of Endangered Species:National Catalogue of Endangered Species
  12. Denuncian la muerte de un segundo oso en Palencia en cuatro meses · ELPAÍS.com
  13. Swenson, J. E.; Gerstl, N.; Dahle, B.; Zedrosser, A. (2000). Action Plan for Conservation of the Brown Bear in Europe (Ursus arctos) (Report). Council of Europe Publishing.
  14. Bernhard Rübe (director), Bernd Strobel (editor) (2014). Spaniens wilder Norden. Im Reich der Bären und Wölfe (in German). Archived from the original on 2016-05-22.
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  16. "UNESCO Unveils 25 New Biosphere Reserves". ens-newswire.com. 2006-10-30. Archived from the original on 2006-11-11.