Devil S Hole
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^ Jump up to: a b Baugh, Thomas M.; Deacon, James E. (1983). "Daily and Yearly Movement of the Devil's Hole Pupfish Cyprinodon Diabolis Wales in Devil's Hole, Nevada". The Great Basin Naturalist . 43 (4): 592–596. JSTOR 41712019 .
^ Jump up to: a b c Andersen, Matthew E.; Deacon, James E. (2001). "Population Size of Devils Hole Pupfish (Cyprinodon diabolis) Correlates with Water Level". Copeia . 1 : 224–228. doi : 10.1643/0045-8511(2001)001[0224:PSODHP]2.0.CO;2 . ISSN 0045-8511 .
^ Jump up to: a b "Devils Hole" . National Park Service . Retrieved 28 January 2014 .
^ Landwehr, J.M.; Winograd, I.J. (2012). "Devils Hole, Nevada—A Primer" . U.S. Geological Survey. Fact Sheet 2012–3021 . Retrieved 2013-01-17 .
^ NatureServe (2014). " Cyprinodon diabolis " . IUCN Red List of Threatened Species . 2014 : e.T6149A15362335. doi : 10.2305/IUCN.UK.2014-3.RLTS.T6149A15362335.en .
^ "In a hole" . The Economist . Retrieved 2016-05-10 .
^ Jump up to: a b c "Devils Hole Pupfish" . U.S. Fish and Wildlife Service. December 2, 2013 . Retrieved 2016-05-14 .
^ Walker, Matt (23 June 2016). "We know where the world's loneliest species came from" . bbc.com . Retrieved 24 June 2016 .
^ Sağlam, İsmail K.; Baumsteiger, Jason; Smith, Matt J.; Linares-Casenave, Javier; et al. (2016). "Phylogenetics supports an ancient common origin of two scientific icons: Devils Hole and Devils Hole pupfish". Molecular Ecology . 25 (16): 3962–73. doi : 10.1111/mec.13732 . PMID 27314880 . S2CID 21832372 .
^ Minckley, WL; Deacon, JE (1991). Battle against extinction: native fish management in the American West . Tucson: University of Arizona Press. ISBN 978-0816512218 .
^ Bittel, Jason. "Brutal beetles kept world's rarest fish from breeding—until now" . National Geographic . National Geographic . Retrieved 5 March 2019 .
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Devils Hole, a detached unit of Death Valley National Park , is habitat for the only naturally occurring population of the endangered Devils Hole pupfish ( Cyprinodon diabolis ). The 40 acres (16 ha) unit is part of the Ash Meadows complex, an area of desert uplands and spring-fed oases that was designated as a National Wildlife Refuge in 1984.
Devils Hole is a geothermal pool within a limestone cavern in the Amargosa Desert in the Amargosa Valley of Nevada , east over the Amargosa Range and Funeral Mountains from Death Valley . It is at an elevation of 730 m (2,400 ft) above sea level [1] and the water is a constant temperature of 33 °C (91 °F). [2] The surface area of Devils Hole is about 22 m long by 3.5 m wide (72 ft long by 11.5 ft wide). Approximately 0.3 m (0.98 ft) deep on one end of Devils Hole is a small rock shelf of 3.5 by 5 m (11 by 16 ft). The dissolved oxygen of the water is 2.5–3.0 ppm up to around 22 m (72 ft) in depth, though the shallow shelf can have dissolved oxygen levels as high as 6.0–7.0 ppm in June and July. [1]
Devils Hole branches into caverns at least 130 m (430 ft) deep, [2] whose bottom has never been mapped. [3] According to geologists , the caves were formed over 500,000 years ago. [4] The pool has frequently experienced activity due to far away earthquakes in Japan , Indonesia and Chile , which have been likened to extremely small scale tsunamis . [3]
Devils Hole is the only natural habitat of the Devils Hole pupfish , which thrives despite the hot, oxygen-poor water. Devils Hole "may be the smallest habitat in the world containing the entire population of a vertebrate species". [2] The pupfish are considered critically endangered by the IUCN . [5] The pupfish has been described as the world's rarest fish, [6] with a population of less than 200 since 2005. [7] Genetic information indicates that the pupfish species is as old as the Hole itself, which opened to the surface about 60,000 years ago. [8] [9]
The pupfish have been protected since being declared an endangered species in 1967. [7] Conflicts of the ownership and use of the groundwater around Devils Hole caused litigation in the 1980s. [10] The litigation triggered further protections of the pupfish. However, since the late 1990s, the pupfish population has substantially decreased. The reasons for the decrease are unknown, but is possibly due to a microscopic non-indigenous diving beetle that is consuming pupfish eggs. [7] [11]
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49° 15.0111 ′N , 3° 49.8763 ′W 49.25019N, 2.16873W 49°15′0.67″N, 3°49′52.58″W
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