Effect of anthropic activity on the Imperial Cormorants and Rock Shags colonies in the Beagle Channel, Tierra del Fuego

Seabirds are important components of the marine ecosystem and provide an income for local economies through ecotourism. Human disturbance may affect colonial birds causing a decrease in reproductive success and population size. Breeding colonies of Phalacrocorax atriceps and P. magellanicus, are one...

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Autores principales:	Rosciano,Natalia G, Svagelj,Walter S, Raya Rey,Andrea
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2013
Materias:	Beagle Channel human disturbance Phalacrocorax atriceps Phalacrocorax magellanicus tourism
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572013000100014
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spelling	oai:scielo:S0718-195720130001000142014-09-09Effect of anthropic activity on the Imperial Cormorants and Rock Shags colonies in the Beagle Channel, Tierra del FuegoRosciano,Natalia GSvagelj,Walter SRaya Rey,Andrea Beagle Channel human disturbance Phalacrocorax atriceps Phalacrocorax magellanicus tourism Seabirds are important components of the marine ecosystem and provide an income for local economies through ecotourism. Human disturbance may affect colonial birds causing a decrease in reproductive success and population size. Breeding colonies of Phalacrocorax atriceps and P. magellanicus, are one of the major tourist attractions of Ushuaia city and the number of tourist vessels visiting colonies increased in recent years. We aim to evaluate if there is an influence of human activities on the distribution and abundance of Cormorants´ and Shags´ colonies and individuals at sea in the Beagle Channel, Tierra del Fuego. Explanatory variables from anthropic source, such as distance to the vessels route, and environmental variables, as adequate substrate type to nest and bathymetry, for each species were defined and related to the data recorded of the size of both species colonies and the feeding distribution. Allocation of colonies and distribution at sea of P. atriceps and P. magellanicus in the Beagle Channel were not affected by tourism activities. Abundance of P. magellanicus at the colonies was associated to islands with a large surface of rocky cliffs available for nesting. Distribution of P. atriceps at sea was related to shallow waters. Although no anthropogenic impact was noticed in our study, given the increase in boat traffic and tourism, more specific and long term studies are encouraged to provide the precise and site-specific guidelines for a sustainable tourism management allowing seabird conservation.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.48 n.1 20132013-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572013000100014en10.4067/S0718-19572013000100014
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Beagle Channel human disturbance Phalacrocorax atriceps Phalacrocorax magellanicus tourism
spellingShingle	Beagle Channel human disturbance Phalacrocorax atriceps Phalacrocorax magellanicus tourism Rosciano,Natalia G Svagelj,Walter S Raya Rey,Andrea Effect of anthropic activity on the Imperial Cormorants and Rock Shags colonies in the Beagle Channel, Tierra del Fuego
description	Seabirds are important components of the marine ecosystem and provide an income for local economies through ecotourism. Human disturbance may affect colonial birds causing a decrease in reproductive success and population size. Breeding colonies of Phalacrocorax atriceps and P. magellanicus, are one of the major tourist attractions of Ushuaia city and the number of tourist vessels visiting colonies increased in recent years. We aim to evaluate if there is an influence of human activities on the distribution and abundance of Cormorants´ and Shags´ colonies and individuals at sea in the Beagle Channel, Tierra del Fuego. Explanatory variables from anthropic source, such as distance to the vessels route, and environmental variables, as adequate substrate type to nest and bathymetry, for each species were defined and related to the data recorded of the size of both species colonies and the feeding distribution. Allocation of colonies and distribution at sea of P. atriceps and P. magellanicus in the Beagle Channel were not affected by tourism activities. Abundance of P. magellanicus at the colonies was associated to islands with a large surface of rocky cliffs available for nesting. Distribution of P. atriceps at sea was related to shallow waters. Although no anthropogenic impact was noticed in our study, given the increase in boat traffic and tourism, more specific and long term studies are encouraged to provide the precise and site-specific guidelines for a sustainable tourism management allowing seabird conservation.
author	Rosciano,Natalia G Svagelj,Walter S Raya Rey,Andrea
author_facet	Rosciano,Natalia G Svagelj,Walter S Raya Rey,Andrea
author_sort	Rosciano,Natalia G
title	Effect of anthropic activity on the Imperial Cormorants and Rock Shags colonies in the Beagle Channel, Tierra del Fuego
title_short	Effect of anthropic activity on the Imperial Cormorants and Rock Shags colonies in the Beagle Channel, Tierra del Fuego
title_full	Effect of anthropic activity on the Imperial Cormorants and Rock Shags colonies in the Beagle Channel, Tierra del Fuego
title_fullStr	Effect of anthropic activity on the Imperial Cormorants and Rock Shags colonies in the Beagle Channel, Tierra del Fuego
title_full_unstemmed	Effect of anthropic activity on the Imperial Cormorants and Rock Shags colonies in the Beagle Channel, Tierra del Fuego
title_sort	effect of anthropic activity on the imperial cormorants and rock shags colonies in the beagle channel, tierra del fuego
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572013000100014
work_keys_str_mv	AT roscianonataliag effectofanthropicactivityontheimperialcormorantsandrockshagscoloniesinthebeaglechanneltierradelfuego AT svageljwalters effectofanthropicactivityontheimperialcormorantsandrockshagscoloniesinthebeaglechanneltierradelfuego AT rayareyandrea effectofanthropicactivityontheimperialcormorantsandrockshagscoloniesinthebeaglechanneltierradelfuego
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Effect of anthropic activity on the Imperial Cormorants and Rock Shags colonies in the Beagle Channel, Tierra del Fuego

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