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268:, and continued in its early years by Felipe Cruz and American naturalist Tina Beach. In 1983, the first year in which rats were controlled, the petrels' overall nesting success rose from 31% to 46%, despite high rainfall that collapsed many of the petrels' burrows. The following year, breeding success improved even more, with 72 chicks fledged across 100 nests. Targeted hunting of cats, goats, donkeys and pigs also reduced disturbance of petrel nests. Throughout the 1980s, continued rat baiting allowed the petrel colony to maintain high levels of nesting success.
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260:", an initiative led by local conservationist Felipe Cruz. In the early 1980s, conservationists launched the first programme to control introduced rats at Cerro Pajas, to improve the petrels' breeding success. This programme was started by Malcolm Coulter, an
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417:
Michael Dvorak, Erwin Nemeth, Beate
Wendelin, Patricio Herrera, Denis Mosquera, David Anchundia, Christian Sevilla, Sabine Tebbich & Birgit Fessl (2017).
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222:. In 1981, it was estimated that the petrel colony, comprising about 2000 breeding pairs, was declining by 33% every year, due to predation by
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440:"Reproductive biology and responses to threats and protection measures of the total population of a critically endangered Galapagos plant,
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468:"Avian population survey in the Floreana highlands: is Darwin’s Medium Tree Finch declining in remnant patches of Scalesia forest?"
206:
forest on the island, providing important habitat for multiple species of Darwin's finches, including the critically endangered
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70:
597:
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Felipe Cruz, Justine Cruz, Jaime
Astudillo & Hugo Sanchez (1984) "Protecting the Hawaiian petrel."
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192:. It is the highest peak on Floreana, with a maximum elevation of 640 meters above sea level.
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and other introduced species. The colony is also threatened by introduced plants, such as
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419:"Conservation status of landbirds on Floreana: the smallest inhabited Galápagos Island"
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The area around the Cerro Pajas crater contains the largest expanse of highland
390:"Fossil birds, reptiles, and mammals from Isla Floreana, Galapagos Archipelago"
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Duffy, David (1984) "The endangered petrel of the
Galapagos volcanoes."
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Prior to 1984, the residents of
Floreana had declared Cerro Pajas a "
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Jody A. O'Connor, Frank J. Sulloway & Sonia
Kleindorfer (2010)
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funded a five-year conservation programme to control rats, cats,
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Felipe Cruz, Justine Cruz & Jonas E. Lawesson (1986). "
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Some sources give an elevation of 540 meters or 550 meters.
237:, which was introduced to the island in 1938. In 1982, the
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Cerro Pajas hosts the island's most important colony of
408:, Galapagos Conservancy. Accessed March 22, 2020.
180:) is an inactive volcano located in the south of
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552:L., a threat to native plants and animals."
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523:Cruz, Justine B., and Felipe Cruz (1996).
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525:"Conservation of the dark-rumped petrel
448:Botanical journal of the Linnean Society
331:nesting under a boulder at Cerro Pajas.
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288:forest inside the Cerro Pajas crater.
529:of the Galápagos Islands, 1982–1991"
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438:Simbana, W., & Tye, A. (2009).
316:Looking down on Cerro Pajas crater.
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593:Volcanoes of the Galápagos Islands
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533:Bird Conservation International
471:Bird Conservation International
266:Charles Darwin Research Station
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388:David William Steadman (1982)
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304:, showing its volcanic crater.
300:Cerro Pajas photographed from
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423:Journal of Field Ornithology
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53:359 m (1,178 ft)
43:640 m (2,100 ft)
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571:Noticias de Galapagos
554:Noticias de Galápagos
527:Pterodroma phaeopygia
497:Noticias de Galapagos
394:University of Arizona
203:Scalesia pedunculata
93:1.29361°S 90.45722°W
239:World Wildlife Fund
98:-1.29361; -90.45722
89: /
598:Inactive volcanoes
33:Highest point
442:Linum cratericola
220:Galapagos petrels
208:medium tree finch
186:Galápagos Islands
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158:Galápagos Islands
140:Galápagos Islands
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253:at the colony.
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182:Floreana Island
172:(also known as
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258:Protected Area
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539:(1): 23-32.
444:(Linaceae)"
170:Cerro Pajas
134:Cerro Pajas
96: /
71:Coordinates
19:Cerro Pajas
587:Categories
406:"Floreana"
349:References
224:black rats
174:Cerro Paja
84:90°27′26″W
49:Prominence
374:Citations
109:Geography
81:1°17′37″S
39:Elevation
560:: 10-11.
503:: 24-27.
337:See also
286:Scalesia
196:Wildlife
150:Location
272:Gallery
264:at the
251:donkeys
190:Ecuador
184:in the
162:Ecuador
59:Listing
354:Notes
247:goats
64:Ultra
577:: 8.
249:and
243:pigs
228:cats
452:161
176:or
589::
575:40
573:,
558:43
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531:.
508:^
501:39
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482:^
475:20
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459:^
450:,
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427:88
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381:^
245:,
235:L.
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537:6
396:.
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