Relative importance of periphyton and phytoplankton in turbid and clear vegetated shallow lakes from the Pampa Plain (Argentina): A comparative experimental study
We analyzed experimentally the relative contribution of phytoplankton and periphyton in two shallow lakes from the Pampa Plain (Argentina) that represent opposite scenarios according to the alternative states hypothesis for shallow lakes: a clear lake with submerged macrophytes, and a turbid lake wi...
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todo:paper_00188158_v646_n1_p271_Sanchez2023-10-03T14:16:04Z Relative importance of periphyton and phytoplankton in turbid and clear vegetated shallow lakes from the Pampa Plain (Argentina): A comparative experimental study Sánchez, M.L. Pizarro, H. Tell, G. Izaguirre, I. Alternative states Artificial substrata Benthic biomass Enclosures Pelagic biomass South America Alternative state Argentina Artificial substrata Benthic biomass Chlorophyll-a concentration Experimental studies Higher efficiency Littoral zone Nitrogen limitation Nutrient recycling Periphytons Phytoplankton biomass Phytoplankton chlorophyll Phytoplankton community Relative contribution Relative importance Shallow lakes South America Submerged macrophytes Temporal change Turbid lakes Algae control Biomass Chlorophyll Enclosures Phytoplankton Porphyrins Lakes artificial substrate benthos chlorophyll colonization enclosure experiment heterotrophy lake ecosystem macrophyte nitrogen nutrient cycling pelagic ecosystem periphyton phytomass phytoplankton submerged vegetation turbidity Argentina Pampas We analyzed experimentally the relative contribution of phytoplankton and periphyton in two shallow lakes from the Pampa Plain (Argentina) that represent opposite scenarios according to the alternative states hypothesis for shallow lakes: a clear lake with submerged macrophytes, and a turbid lake with high phytoplankton biomass. To study the temporal changes of both microalgal communities under such contrasting conditions, we placed enclosures in the littoral zone of each lake, including natural phytoplankton and artificial substrata, half previously colonized by periphyton until a mature stage and half clean to analyze periphyton colonization. In the clear vegetated shallow lake, periphyton chlorophyll a concentrations were 3-6 times higher than those of the phytoplankton community. In contrast, phytoplankton chlorophyll a concentrations were 76-1,325 times higher than those of periphyton in the turbid lake. Here, under light limitation conditions, the colonization of the periphyton was significantly lower than in the clear lake. Our results indicate that in turbid shallow lakes, the light limitation caused by phytoplankton determines a low periphyton biomass dominated by heterotrophic components. In clear vegetated shallow lakes, where nitrogen limitation probably occurs, periphyton may develop higher biomass, most likely due to their higher efficiency in nutrient recycling. © Springer Science+Business Media B.V. 2010. Fil:Sánchez, M.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pizarro, H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Izaguirre, I. 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_00188158_v646_n1_p271_Sanchez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Alternative states Artificial substrata Benthic biomass Enclosures Pelagic biomass South America Alternative state Argentina Artificial substrata Benthic biomass Chlorophyll-a concentration Experimental studies Higher efficiency Littoral zone Nitrogen limitation Nutrient recycling Periphytons Phytoplankton biomass Phytoplankton chlorophyll Phytoplankton community Relative contribution Relative importance Shallow lakes South America Submerged macrophytes Temporal change Turbid lakes Algae control Biomass Chlorophyll Enclosures Phytoplankton Porphyrins Lakes artificial substrate benthos chlorophyll colonization enclosure experiment heterotrophy lake ecosystem macrophyte nitrogen nutrient cycling pelagic ecosystem periphyton phytomass phytoplankton submerged vegetation turbidity Argentina Pampas |
| spellingShingle |
Alternative states Artificial substrata Benthic biomass Enclosures Pelagic biomass South America Alternative state Argentina Artificial substrata Benthic biomass Chlorophyll-a concentration Experimental studies Higher efficiency Littoral zone Nitrogen limitation Nutrient recycling Periphytons Phytoplankton biomass Phytoplankton chlorophyll Phytoplankton community Relative contribution Relative importance Shallow lakes South America Submerged macrophytes Temporal change Turbid lakes Algae control Biomass Chlorophyll Enclosures Phytoplankton Porphyrins Lakes artificial substrate benthos chlorophyll colonization enclosure experiment heterotrophy lake ecosystem macrophyte nitrogen nutrient cycling pelagic ecosystem periphyton phytomass phytoplankton submerged vegetation turbidity Argentina Pampas Sánchez, M.L. Pizarro, H. Tell, G. Izaguirre, I. Relative importance of periphyton and phytoplankton in turbid and clear vegetated shallow lakes from the Pampa Plain (Argentina): A comparative experimental study |
| topic_facet |
Alternative states Artificial substrata Benthic biomass Enclosures Pelagic biomass South America Alternative state Argentina Artificial substrata Benthic biomass Chlorophyll-a concentration Experimental studies Higher efficiency Littoral zone Nitrogen limitation Nutrient recycling Periphytons Phytoplankton biomass Phytoplankton chlorophyll Phytoplankton community Relative contribution Relative importance Shallow lakes South America Submerged macrophytes Temporal change Turbid lakes Algae control Biomass Chlorophyll Enclosures Phytoplankton Porphyrins Lakes artificial substrate benthos chlorophyll colonization enclosure experiment heterotrophy lake ecosystem macrophyte nitrogen nutrient cycling pelagic ecosystem periphyton phytomass phytoplankton submerged vegetation turbidity Argentina Pampas |
| description |
We analyzed experimentally the relative contribution of phytoplankton and periphyton in two shallow lakes from the Pampa Plain (Argentina) that represent opposite scenarios according to the alternative states hypothesis for shallow lakes: a clear lake with submerged macrophytes, and a turbid lake with high phytoplankton biomass. To study the temporal changes of both microalgal communities under such contrasting conditions, we placed enclosures in the littoral zone of each lake, including natural phytoplankton and artificial substrata, half previously colonized by periphyton until a mature stage and half clean to analyze periphyton colonization. In the clear vegetated shallow lake, periphyton chlorophyll a concentrations were 3-6 times higher than those of the phytoplankton community. In contrast, phytoplankton chlorophyll a concentrations were 76-1,325 times higher than those of periphyton in the turbid lake. Here, under light limitation conditions, the colonization of the periphyton was significantly lower than in the clear lake. Our results indicate that in turbid shallow lakes, the light limitation caused by phytoplankton determines a low periphyton biomass dominated by heterotrophic components. In clear vegetated shallow lakes, where nitrogen limitation probably occurs, periphyton may develop higher biomass, most likely due to their higher efficiency in nutrient recycling. © Springer Science+Business Media B.V. 2010. |
| format |
JOUR |
| author |
Sánchez, M.L. Pizarro, H. Tell, G. Izaguirre, I. |
| author_facet |
Sánchez, M.L. Pizarro, H. Tell, G. Izaguirre, I. |
| author_sort |
Sánchez, M.L. |
| title |
Relative importance of periphyton and phytoplankton in turbid and clear vegetated shallow lakes from the Pampa Plain (Argentina): A comparative experimental study |
| title_short |
Relative importance of periphyton and phytoplankton in turbid and clear vegetated shallow lakes from the Pampa Plain (Argentina): A comparative experimental study |
| title_full |
Relative importance of periphyton and phytoplankton in turbid and clear vegetated shallow lakes from the Pampa Plain (Argentina): A comparative experimental study |
| title_fullStr |
Relative importance of periphyton and phytoplankton in turbid and clear vegetated shallow lakes from the Pampa Plain (Argentina): A comparative experimental study |
| title_full_unstemmed |
Relative importance of periphyton and phytoplankton in turbid and clear vegetated shallow lakes from the Pampa Plain (Argentina): A comparative experimental study |
| title_sort |
relative importance of periphyton and phytoplankton in turbid and clear vegetated shallow lakes from the pampa plain (argentina): a comparative experimental study |
| url |
http://hdl.handle.net/20.500.12110/paper_00188158_v646_n1_p271_Sanchez |
| work_keys_str_mv |
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