guano islands: perú december 2008 josé a. ochoa. guano islands are a group of small rocky islands...
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Guano Islands: Perú
December 2008
José A. Ochoa
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Guano Islands are a group of small rocky islands off the coast of Peru, usually they are bordered with cliffs on all sides, and mostly covered by the nests and guano of many seabirds. Guano is a quechua word “wanu”, meaning “droppings of sea birds”.
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Islands visited
Islas Guañape
Isla Santa
Isla MazorcaIslas Ballestas, San Gallan
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Guano is an effective fertilizer, consists of ammonia, with high levels of phosphorus and nitrogen. These islands were of interest for their extensive guano deposits. The Incas assigned great value to guano, restricting access to the islands.
Isla Mazorca
Seabirds
Sula variegata Pelecanus thagus
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Scorpions were collected at night with UV light detection in rocky areas, as well as under stones and bird nests during the day.
birdnest
Hadruroides tishqu
Hadruroides is the only scorpion genus present in these islands
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Four specimens under one bird nest !!!!
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Islas Ballestas
Guano islands are currently protected by the Peruvian state
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Isla San Gallan, Ica
Caleta Huacho on the coastal mainland, northern Peru
José A. Ochoa and two local fishermen, Isla Mazorca
Joyce Vitorino and José A. Ochoa, Islas Ballestas
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Ecuador
20 days (8–18 November, 14–22December 2008)
ca. 1700 km, between 300–2000 m, exclusively through montane rainforest on the eastern and western sides of the Andes in the following provinces: Pichincha, Napo, Tunguragua and Morona Santiago
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Baños, Tunguragua
Tityus roigi Teuthraustes
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Tityus asthenes
Misahualli river, Napo
Nanegalito, Pichincha
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Tityus bastosi
Ananteris ashmolei
Tityus demangei
Faustino Tsenkush , Marco Shakai and Cristobal Chiriap
Tayunts, Los Tayos
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Acknowledgments to: Instituto Nacional de Recursos Naturales de Perú (INRENA)
Proyecto Especial de Promoción del Aprovechamiento de Abonos Provenientes de Aves Marinas (PROABONOS)
Ministerio del Ambiente de la Republica del Ecuador
Museo Ecuatoriano de Ciencias Naturales
AMNH Kalbfleisch Postdoctoral Fellowship
Help in fieldwork Joyce Vitorino Villegas (Univ. Nac. Cusco). Eufemio Rea and Cesar Rea (Huacho). Faustino Tsenkush , Marco Shakai and Cristobal Chiriap (Los Tayos, Ecuador)