Distribución de la diatomea invasora Didymosphenia geminata (Bacillariophyceae) en cuerpos de agua patagónicos de Argentina
Background and aims: Didymosphenia geminata is a freshwater diatom that forms dense soggy carpet-like layers lining the bottom of aquatic environments. In Argentina the Secretaría de Ambiente y Desarrollo Sustentable de la Nación declared it exotic invader species. In the last 9 years it has coloniz...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | español |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/122842 |
| Acceso en línea: | http://hdl.handle.net/11336/122842 |
| Access Level: | acceso abierto |
| Palabra clave: | ARGENTINA DIDYMOSPHENIA GEMINATA DISTRIBUTION GIS PATAGONIA https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
| Sumario: | Background and aims: Didymosphenia geminata is a freshwater diatom that forms dense soggy carpet-like layers lining the bottom of aquatic environments. In Argentina the Secretaría de Ambiente y Desarrollo Sustentable de la Nación declared it exotic invader species. In the last 9 years it has colonized rivers from Patagonia and its distribution in the region has considerably widen. The aim of this paper is to analyze current distribution of this species invasion in Argentinean Patagonia through the use of Geographic Information Systems (GIS). M & M: The analyzed data were obtained by our team in Neuquén and Chubut provinces and also from technical reports published by universities or governmental institutions in websites. A database at regional scale from Neuquén to Tierra del Fuego was built considering presence-absence data, geographic position and dates and in some cases environmental data (pH, conductivity, etc.) Results: The results were incorporated to a GIS using Q-Gis 2.14 an open source and free software that allowed us to generate distribution maps at national and provincial level. Conclusions: The available data show that D. geminata has widen its distribution since 2010 to present from Chubut province to the north reaching Neuquén province and to the south up to Tierra del Fuego province. |
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