Distribution of the invasive diatom Didymosphenia geminata (Bacillariophyceae) in patagonian water bodies of Argentina.

Authors

  • Anabel A. Lamaro 1. División Ficología, Facultad de Ciencias Naturales y Museo UNLP. La Plata. Buenos Aires. 2. Comisión Nacional de Actividades Espaciales. CABA.
  • Juliana Pisonero 1. División Ficología, Facultad de Ciencias Naturales y Museo UNLP. La Plata. Buenos Aires.
  • Noelia Uyua 3. Consejo Nacional de Investigaciones Científicas y Técnicas. 4. Instituto de Investigación de Hidrobiología, Facultad de Ciencias Naturales y Ciencias de la Salud, Sede Trelew, UNPSJB. Chubut.
  • Viviana Sastre 4. Instituto de Investigación de Hidrobiología, Facultad de Ciencias Naturales y Ciencias de la Salud, Sede Trelew, UNPSJB. Chubut.
  • Norma Santinelli 4. Instituto de Investigación de Hidrobiología, Facultad de Ciencias Naturales y Ciencias de la Salud, Sede Trelew, UNPSJB. Chubut.
  • Julieta Muñiz Saavedra 5. Dirección General de Biología Acuática, Secretaría de Ambiente y Desarrollo Sostenible. Neuquén. 6. Asentamiento Universitario San Martín de los Andes. UNCOMA. Neuquén.
  • Silvia E. Sala 1. División Ficología, Facultad de Ciencias Naturales y Museo UNLP. La Plata. Buenos Aires

DOI:

https://doi.org/10.31055/1851.2372.v54.n2.24362

Keywords:

Didymosphenia geminata, GIS, Patagonia, Argentina, distribution

Abstract

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 lasts 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 the dynamic 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.

Downloads

Download data is not yet available.

Downloads

Published

2019-06-20

How to Cite

Lamaro, Anabel A., Juliana Pisonero, Noelia Uyua, Viviana Sastre, Norma Santinelli, Julieta Muñiz Saavedra, and Silvia E. Sala. 2019. “Distribution of the Invasive Diatom Didymosphenia Geminata (Bacillariophyceae) in Patagonian Water Bodies of Argentina”. Boletín De La Sociedad Argentina De Botánica (Journal of the Argentine Botanical Society 54 (2):169-83. https://doi.org/10.31055/1851.2372.v54.n2.24362.

Issue

Vol. 54 No. 2 (2019): June

Section

Original Articles

License

Provides immediate and free OPEN ACCESS to its content under the principle of making research freely available to the public, which fosters a greater exchange of global knowledge, allowing authors to maintain their copyright without restrictions.

Material published in Bol. Soc. Argent. Bot. is distributed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license.