No longer the pristine confines of the world ocean: a survey of exotic marine species in the southwestern Atlantic

We conducted a comprehensive survey of existing knowledge about exotic marine organisms introduced to the southwestern Atlantic Ocean, including coastal and shelf areas of Uruguay and Argentina. This domain is equivalent to the so-called Patagonian Shelf Large Marine Ecosystem, and corresponds to tw...

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Autores principales: Lobo Oresanz, José María, Schwindt, Evangelina, Pastorino, Guido, Bortolus, Alejandro, Casas, Graciela, Darrigran, Gustavo Alberto, Elías, Rodolfo, López Gappa, Juan José, Obenat, Sandra, Pascual, Marcela, Penchaszadeh, Pablo, Piriz, María Luz, Scarabino, Fabrizio, Spivak, Eduardo D., Vallarino, Eduardo A.
Formato: Articulo Revision
Lenguaje:Inglés
Publicado: 2002
Materias:
Ciencias Naturales
Argentina
estuarine
exotics
invasions
marine
Patagonia
southwest Atlantic
Uruguay
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/106556
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-106556
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Argentina
estuarine
exotics
invasions
marine
Patagonia
southwest Atlantic
Uruguay
spellingShingle Ciencias Naturales
Argentina
estuarine
exotics
invasions
marine
Patagonia
southwest Atlantic
Uruguay
Lobo Oresanz, José María
Schwindt, Evangelina
Pastorino, Guido
Bortolus, Alejandro
Casas, Graciela
Darrigran, Gustavo Alberto
Elías, Rodolfo
López Gappa, Juan José
Obenat, Sandra
Pascual, Marcela
Penchaszadeh, Pablo
Piriz, María Luz
Scarabino, Fabrizio
Spivak, Eduardo D.
Vallarino, Eduardo A.
No longer the pristine confines of the world ocean: a survey of exotic marine species in the southwestern Atlantic
topic_facet Ciencias Naturales
Argentina
estuarine
exotics
invasions
marine
Patagonia
southwest Atlantic
Uruguay
description We conducted a comprehensive survey of existing knowledge about exotic marine organisms introduced to the southwestern Atlantic Ocean, including coastal and shelf areas of Uruguay and Argentina. This domain is equivalent to the so-called Patagonian Shelf Large Marine Ecosystem, and corresponds to two biogeographic provinces: warm-temperate (Argentine Province) and cold temperate (Magellanic Province). The search included species that can be confidently categorized as introduced (31) and cryptogenic species (46). We present a comprehensive picture of recorded introductions (the first for this region) and some prominent ecological consequences. Most coastal ecosystems between the La Plata River estuary and central Patagonia have already been modified, or are expected to be so in the short term. Five recent, human-mediated biological invasions have already had a significant ecological impact. A barnacle (Balanus glandula) belt has developed on all rocky shores where none was present 30 years ago, a macro-fouler (Limnoperna fortunei) and a reef-builder (Ficopomatus enigmaticus) have strongly modified estuarine ecosystems, Pacific oyster (Crassostrea gigas) reefs are expanding in shallow bays at a fast rate, and kelp (Undaria pinnatifida) is rapidly modifying nearshore benthic communities along the coasts of central Patagonia. At this point, it is uncertain how many of the cordgrasses (Spartina spp.) found in coastal salt marshes correspond to exotic forms. Only exposed sandy beaches appear to be free from the pervasive ecological impact of invasion by exotic species. Poor knowledge of the regional biota makes it difficult to track invasions.
format Articulo
Revision
author Lobo Oresanz, José María
Schwindt, Evangelina
Pastorino, Guido
Bortolus, Alejandro
Casas, Graciela
Darrigran, Gustavo Alberto
Elías, Rodolfo
López Gappa, Juan José
Obenat, Sandra
Pascual, Marcela
Penchaszadeh, Pablo
Piriz, María Luz
Scarabino, Fabrizio
Spivak, Eduardo D.
Vallarino, Eduardo A.
author_facet Lobo Oresanz, José María
Schwindt, Evangelina
Pastorino, Guido
Bortolus, Alejandro
Casas, Graciela
Darrigran, Gustavo Alberto
Elías, Rodolfo
López Gappa, Juan José
Obenat, Sandra
Pascual, Marcela
Penchaszadeh, Pablo
Piriz, María Luz
Scarabino, Fabrizio
Spivak, Eduardo D.
Vallarino, Eduardo A.
author_sort Lobo Oresanz, José María
title No longer the pristine confines of the world ocean: a survey of exotic marine species in the southwestern Atlantic
title_short No longer the pristine confines of the world ocean: a survey of exotic marine species in the southwestern Atlantic
title_full No longer the pristine confines of the world ocean: a survey of exotic marine species in the southwestern Atlantic
title_fullStr No longer the pristine confines of the world ocean: a survey of exotic marine species in the southwestern Atlantic
title_full_unstemmed No longer the pristine confines of the world ocean: a survey of exotic marine species in the southwestern Atlantic
title_sort no longer the pristine confines of the world ocean: a survey of exotic marine species in the southwestern atlantic
publishDate 2002
url http://sedici.unlp.edu.ar/handle/10915/106556
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