Tendance d'une colonie mixte de Manchots de Humboldt et de Manchots de Magellan dans le sud du Chili à la suite de l'établissement d'une aire protégée

Ronnie Reyes-Arriagada, Luciano Hiriart-Bertrand, Victoria Riquelme, Alejandro Simeone, Klemens Pütz, Benno Lüthi, Andrea Raya Rey

Resultado de la investigación: Article

5 Citas (Scopus)

Resumen

Worldwide marine protected areas (MPAs) have been designated to protect marine resources, including top predators such as seabirds. There is no conclusive information on whether protected areas can improve population trends of seabirds when these are further exploited as tourist attractions, an activity that has increased in past decades. Humboldt Penguins (Spheniscus humboldti) and Magellanic Penguins (S. magellanicus) breed sympatrically on Puñihuil Islets, two small coastal islands off the west coast of Chiloé Island (41° S) in southern Chile that are subject to exploitation for tourism. Our goal was to compare the population size of the mixed colony of Humboldt and Magellanic Penguins before and after protection from unregulated tourism and freely roaming goats in 1997. For this purpose, two censuses were conducted in 2004 and 2008, and the numbers compared with those obtained in 1997 by other authors. The proportion of occupied, unoccupied, and collapsed/flooded burrows changed between years; there were 68% and 34% fewer collapsed burrows in 2004 and 2008, respectively, than in 1997. For the total number of burrows of both species, we counted 48% and 63% more burrows in 2004 and 2008, respectively, than in 1997. We counted 13% more burrows of Humboldt Penguins in 2008 than in 1997, and for Magellanic Penguins, we estimated a 64% increase in burrows in 2008. Presumably, this was as a result of habitat improvement attributable to the exclusion of tourists and the removal of goats from the islets. Although tourist visits to the islets are prohibited, tourism activities around the colonies are prevalent and need to be taken into account to promote appropriate management.

Idioma originalFrench
PublicaciónAvian Conservation and Ecology
Volumen8
N.º2
DOI
EstadoPublished - 2013

Huella dactilar

penguins
burrow
burrows
Chile
protected area
conservation areas
tourists
tourism
goat
seabird
seabirds
goats
Chilo
Spheniscus
tourist attraction
marine resources
marine resource
population trend
population size
census

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Animal Science and Zoology
  • Nature and Landscape Conservation

Citar esto

Reyes-Arriagada, Ronnie ; Hiriart-Bertrand, Luciano ; Riquelme, Victoria ; Simeone, Alejandro ; Pütz, Klemens ; Lüthi, Benno ; Rey, Andrea Raya. / Tendance d'une colonie mixte de Manchots de Humboldt et de Manchots de Magellan dans le sud du Chili à la suite de l'établissement d'une aire protégée. En: Avian Conservation and Ecology. 2013 ; Vol. 8, N.º 2.
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abstract = "Worldwide marine protected areas (MPAs) have been designated to protect marine resources, including top predators such as seabirds. There is no conclusive information on whether protected areas can improve population trends of seabirds when these are further exploited as tourist attractions, an activity that has increased in past decades. Humboldt Penguins (Spheniscus humboldti) and Magellanic Penguins (S. magellanicus) breed sympatrically on Pu{\~n}ihuil Islets, two small coastal islands off the west coast of Chilo{\'e} Island (41° S) in southern Chile that are subject to exploitation for tourism. Our goal was to compare the population size of the mixed colony of Humboldt and Magellanic Penguins before and after protection from unregulated tourism and freely roaming goats in 1997. For this purpose, two censuses were conducted in 2004 and 2008, and the numbers compared with those obtained in 1997 by other authors. The proportion of occupied, unoccupied, and collapsed/flooded burrows changed between years; there were 68{\%} and 34{\%} fewer collapsed burrows in 2004 and 2008, respectively, than in 1997. For the total number of burrows of both species, we counted 48{\%} and 63{\%} more burrows in 2004 and 2008, respectively, than in 1997. We counted 13{\%} more burrows of Humboldt Penguins in 2008 than in 1997, and for Magellanic Penguins, we estimated a 64{\%} increase in burrows in 2008. Presumably, this was as a result of habitat improvement attributable to the exclusion of tourists and the removal of goats from the islets. Although tourist visits to the islets are prohibited, tourism activities around the colonies are prevalent and need to be taken into account to promote appropriate management.",
keywords = "Burrow activity, Exclusion, Protected area, Spheniscus humboldti, Spheniscus magellanicus, Tourism",
author = "Ronnie Reyes-Arriagada and Luciano Hiriart-Bertrand and Victoria Riquelme and Alejandro Simeone and Klemens P{\"u}tz and Benno L{\"u}thi and Rey, {Andrea Raya}",
year = "2013",
doi = "10.5751/ACE-00617-080213",
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volume = "8",
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issn = "1712-6568",
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Tendance d'une colonie mixte de Manchots de Humboldt et de Manchots de Magellan dans le sud du Chili à la suite de l'établissement d'une aire protégée. / Reyes-Arriagada, Ronnie; Hiriart-Bertrand, Luciano; Riquelme, Victoria; Simeone, Alejandro; Pütz, Klemens; Lüthi, Benno; Rey, Andrea Raya.

En: Avian Conservation and Ecology, Vol. 8, N.º 2, 2013.

Resultado de la investigación: Article

TY - JOUR

T1 - Tendance d'une colonie mixte de Manchots de Humboldt et de Manchots de Magellan dans le sud du Chili à la suite de l'établissement d'une aire protégée

AU - Reyes-Arriagada, Ronnie

AU - Hiriart-Bertrand, Luciano

AU - Riquelme, Victoria

AU - Simeone, Alejandro

AU - Pütz, Klemens

AU - Lüthi, Benno

AU - Rey, Andrea Raya

PY - 2013

Y1 - 2013

N2 - Worldwide marine protected areas (MPAs) have been designated to protect marine resources, including top predators such as seabirds. There is no conclusive information on whether protected areas can improve population trends of seabirds when these are further exploited as tourist attractions, an activity that has increased in past decades. Humboldt Penguins (Spheniscus humboldti) and Magellanic Penguins (S. magellanicus) breed sympatrically on Puñihuil Islets, two small coastal islands off the west coast of Chiloé Island (41° S) in southern Chile that are subject to exploitation for tourism. Our goal was to compare the population size of the mixed colony of Humboldt and Magellanic Penguins before and after protection from unregulated tourism and freely roaming goats in 1997. For this purpose, two censuses were conducted in 2004 and 2008, and the numbers compared with those obtained in 1997 by other authors. The proportion of occupied, unoccupied, and collapsed/flooded burrows changed between years; there were 68% and 34% fewer collapsed burrows in 2004 and 2008, respectively, than in 1997. For the total number of burrows of both species, we counted 48% and 63% more burrows in 2004 and 2008, respectively, than in 1997. We counted 13% more burrows of Humboldt Penguins in 2008 than in 1997, and for Magellanic Penguins, we estimated a 64% increase in burrows in 2008. Presumably, this was as a result of habitat improvement attributable to the exclusion of tourists and the removal of goats from the islets. Although tourist visits to the islets are prohibited, tourism activities around the colonies are prevalent and need to be taken into account to promote appropriate management.

AB - Worldwide marine protected areas (MPAs) have been designated to protect marine resources, including top predators such as seabirds. There is no conclusive information on whether protected areas can improve population trends of seabirds when these are further exploited as tourist attractions, an activity that has increased in past decades. Humboldt Penguins (Spheniscus humboldti) and Magellanic Penguins (S. magellanicus) breed sympatrically on Puñihuil Islets, two small coastal islands off the west coast of Chiloé Island (41° S) in southern Chile that are subject to exploitation for tourism. Our goal was to compare the population size of the mixed colony of Humboldt and Magellanic Penguins before and after protection from unregulated tourism and freely roaming goats in 1997. For this purpose, two censuses were conducted in 2004 and 2008, and the numbers compared with those obtained in 1997 by other authors. The proportion of occupied, unoccupied, and collapsed/flooded burrows changed between years; there were 68% and 34% fewer collapsed burrows in 2004 and 2008, respectively, than in 1997. For the total number of burrows of both species, we counted 48% and 63% more burrows in 2004 and 2008, respectively, than in 1997. We counted 13% more burrows of Humboldt Penguins in 2008 than in 1997, and for Magellanic Penguins, we estimated a 64% increase in burrows in 2008. Presumably, this was as a result of habitat improvement attributable to the exclusion of tourists and the removal of goats from the islets. Although tourist visits to the islets are prohibited, tourism activities around the colonies are prevalent and need to be taken into account to promote appropriate management.

KW - Burrow activity

KW - Exclusion

KW - Protected area

KW - Spheniscus humboldti

KW - Spheniscus magellanicus

KW - Tourism

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DO - 10.5751/ACE-00617-080213

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