Diversity and geographic distribution of Chlorococcales (Chlorophyceae) in contrasting lakes along a latitudinal transect in Argentinean Patagonia
The present study focuses on the geographic distribution and biodiversity of the Chlorococcales in Patagonian lakes, covering a latitudinal transect. Two different approaches are considered (a) a review of the historical records of Chlorococcales in Patagonia and (b) the analysis of the morphology-b...
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todo:paper_09603115_v20_n4_p703_Tell2023-10-03T15:53:45Z Diversity and geographic distribution of Chlorococcales (Chlorophyceae) in contrasting lakes along a latitudinal transect in Argentinean Patagonia Tell, G. Izaguirre, I. Allende, L. Argentinean Patagonia Biodiversity Biogeography Chlorococcales biological survey geographical distribution green alga historical record lake ecosystem morphology species diversity species richness taxonomy transect trophic status Argentina Patagonia Chlorococcales Chlorophyceae Pediastrum The present study focuses on the geographic distribution and biodiversity of the Chlorococcales in Patagonian lakes, covering a latitudinal transect. Two different approaches are considered (a) a review of the historical records of Chlorococcales in Patagonia and (b) the analysis of the morphology-based species diversity, ecological remarks, and geographic distribution of the chlorococcalean species recorded in 33 aquatic environments during surveys 2007 and 2008. A total of 308 chlorococcalean species were recorded throughout a 60-year period in Patagonian freshwater systems, encountering the highest chlorococcalean richness in lakes and shallow lakes located in the more intensively sampled areas. In our surveys 2007-2008, 72 chlorococcalean taxa were registered, among which 80% are worldwide distributed, about 19% are restricted to cold temperate areas in both hemispheres and one species (Pediastrum patagonicum) is one of the taxa probably endemic for Patagonia. The chlorococcalean richness in relation to the environmental factors, revealed that it is directly correlated with the trophic status of the water bodies (chl a:r= 0.52 and DIN:r=0.47; P < 0.05). The latitude was inversely correlated with the species richness (r= -0.40; P < 0.05), and the chlorococcalean biodiversity of the Andean lakes (mean value: 3. 64) was significantly lower (P = 0.0022) than that of the lakes from the Patagonian Plateau (mean value: 9.62). In this study we observed a decreasing trend in the biodiversity of Chlorococcales with increasing latitude, which fits in the existing ecological pattern described for different groups of organisms. © 2011 Springer Science+Business Media B.V. Fil:Izaguirre, I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Allende, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09603115_v20_n4_p703_Tell |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Argentinean Patagonia Biodiversity Biogeography Chlorococcales biological survey geographical distribution green alga historical record lake ecosystem morphology species diversity species richness taxonomy transect trophic status Argentina Patagonia Chlorococcales Chlorophyceae Pediastrum |
| spellingShingle |
Argentinean Patagonia Biodiversity Biogeography Chlorococcales biological survey geographical distribution green alga historical record lake ecosystem morphology species diversity species richness taxonomy transect trophic status Argentina Patagonia Chlorococcales Chlorophyceae Pediastrum Tell, G. Izaguirre, I. Allende, L. Diversity and geographic distribution of Chlorococcales (Chlorophyceae) in contrasting lakes along a latitudinal transect in Argentinean Patagonia |
| topic_facet |
Argentinean Patagonia Biodiversity Biogeography Chlorococcales biological survey geographical distribution green alga historical record lake ecosystem morphology species diversity species richness taxonomy transect trophic status Argentina Patagonia Chlorococcales Chlorophyceae Pediastrum |
| description |
The present study focuses on the geographic distribution and biodiversity of the Chlorococcales in Patagonian lakes, covering a latitudinal transect. Two different approaches are considered (a) a review of the historical records of Chlorococcales in Patagonia and (b) the analysis of the morphology-based species diversity, ecological remarks, and geographic distribution of the chlorococcalean species recorded in 33 aquatic environments during surveys 2007 and 2008. A total of 308 chlorococcalean species were recorded throughout a 60-year period in Patagonian freshwater systems, encountering the highest chlorococcalean richness in lakes and shallow lakes located in the more intensively sampled areas. In our surveys 2007-2008, 72 chlorococcalean taxa were registered, among which 80% are worldwide distributed, about 19% are restricted to cold temperate areas in both hemispheres and one species (Pediastrum patagonicum) is one of the taxa probably endemic for Patagonia. The chlorococcalean richness in relation to the environmental factors, revealed that it is directly correlated with the trophic status of the water bodies (chl a:r= 0.52 and DIN:r=0.47; P < 0.05). The latitude was inversely correlated with the species richness (r= -0.40; P < 0.05), and the chlorococcalean biodiversity of the Andean lakes (mean value: 3. 64) was significantly lower (P = 0.0022) than that of the lakes from the Patagonian Plateau (mean value: 9.62). In this study we observed a decreasing trend in the biodiversity of Chlorococcales with increasing latitude, which fits in the existing ecological pattern described for different groups of organisms. © 2011 Springer Science+Business Media B.V. |
| format |
JOUR |
| author |
Tell, G. Izaguirre, I. Allende, L. |
| author_facet |
Tell, G. Izaguirre, I. Allende, L. |
| author_sort |
Tell, G. |
| title |
Diversity and geographic distribution of Chlorococcales (Chlorophyceae) in contrasting lakes along a latitudinal transect in Argentinean Patagonia |
| title_short |
Diversity and geographic distribution of Chlorococcales (Chlorophyceae) in contrasting lakes along a latitudinal transect in Argentinean Patagonia |
| title_full |
Diversity and geographic distribution of Chlorococcales (Chlorophyceae) in contrasting lakes along a latitudinal transect in Argentinean Patagonia |
| title_fullStr |
Diversity and geographic distribution of Chlorococcales (Chlorophyceae) in contrasting lakes along a latitudinal transect in Argentinean Patagonia |
| title_full_unstemmed |
Diversity and geographic distribution of Chlorococcales (Chlorophyceae) in contrasting lakes along a latitudinal transect in Argentinean Patagonia |
| title_sort |
diversity and geographic distribution of chlorococcales (chlorophyceae) in contrasting lakes along a latitudinal transect in argentinean patagonia |
| url |
http://hdl.handle.net/20.500.12110/paper_09603115_v20_n4_p703_Tell |
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