Phytoplankton limitation in Patagonian and Pampean shallow lakes: effect of phosphorus and light

In order to evaluate patterns of phytoplankton community structure and primary production limitation, we analyzed the phytoplankton communities (chlorophyll a, biovolume, species richness, and primary production) of a set of 20 shallow lakes encompassing a wide range of phosphorus and light levels....

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Autores principales: Queimaliños, Claudia Patricia, Izaguirre, Irina, Zagarese, Horacio Ernesto
Publicado: 2018
Materias:
Nutrients
Photosynthetic parameters
Phytoplankton limitation
Primary production
community structure
index method
light effect
nutrient limitation
parameter estimation
phosphorus
phytoplankton
primary production
shallow water
species richness
Argentina
Pampas
Patagonia
algae
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v816_n1_p91_Torremorell
http://hdl.handle.net/20.500.12110/paper_00188158_v816_n1_p91_Torremorell
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00188158_v816_n1_p91_Torremorell
record_format dspace
spelling paper:paper_00188158_v816_n1_p91_Torremorell2023-06-08T14:40:01Z Phytoplankton limitation in Patagonian and Pampean shallow lakes: effect of phosphorus and light Queimaliños, Claudia Patricia Izaguirre, Irina Zagarese, Horacio Ernesto Nutrients Photosynthetic parameters Phytoplankton limitation Primary production community structure index method light effect nutrient limitation parameter estimation phosphorus phytoplankton primary production shallow water species richness Argentina Pampas Patagonia algae In order to evaluate patterns of phytoplankton community structure and primary production limitation, we analyzed the phytoplankton communities (chlorophyll a, biovolume, species richness, and primary production) of a set of 20 shallow lakes encompassing a wide range of phosphorus and light levels. The degree of limitation or co-limitation by phosphorus and/or light was estimated using a combined index. We found a direct relationship between irradiance in the water column (Imean) and the light saturation parameter (Ik) and, a negative relationship between Imean and total phosphorus (TP) concentration. Lakes at the lowest and highest ends of TP tended to display the simplest phytoplankton communities (i.e., only one or two algal classes accounted for the total phytoplankton biovolume). In contrast, lakes with intermediate TP exhibited a more complex phytoplankton composition. Low values of phytoplankton abundance proxies (chlorophyll a and biovolume), species richness, and primary production could be observed at any combination of phosphorus and light availability. However, the highest values of the previous variables were observed only when the relative availability of both resources was similar. The combined index developed provides a single metric for describing light versus nutrient limitation. The importance of its use is that can be applied to the analysis of clear lakes lacking vegetation and inorganic turbid lakes, besides organic turbid and clear lakes with vegetation. © 2017, Springer International Publishing Switzerland. Fil:Queimaliños, C. 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. Fil:Zagarese, H.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v816_n1_p91_Torremorell http://hdl.handle.net/20.500.12110/paper_00188158_v816_n1_p91_Torremorell
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Nutrients
Photosynthetic parameters
Phytoplankton limitation
Primary production
community structure
index method
light effect
nutrient limitation
parameter estimation
phosphorus
phytoplankton
primary production
shallow water
species richness
Argentina
Pampas
Patagonia
algae
spellingShingle Nutrients
Photosynthetic parameters
Phytoplankton limitation
Primary production
community structure
index method
light effect
nutrient limitation
parameter estimation
phosphorus
phytoplankton
primary production
shallow water
species richness
Argentina
Pampas
Patagonia
algae
Queimaliños, Claudia Patricia
Izaguirre, Irina
Zagarese, Horacio Ernesto
Phytoplankton limitation in Patagonian and Pampean shallow lakes: effect of phosphorus and light
topic_facet Nutrients
Photosynthetic parameters
Phytoplankton limitation
Primary production
community structure
index method
light effect
nutrient limitation
parameter estimation
phosphorus
phytoplankton
primary production
shallow water
species richness
Argentina
Pampas
Patagonia
algae
description In order to evaluate patterns of phytoplankton community structure and primary production limitation, we analyzed the phytoplankton communities (chlorophyll a, biovolume, species richness, and primary production) of a set of 20 shallow lakes encompassing a wide range of phosphorus and light levels. The degree of limitation or co-limitation by phosphorus and/or light was estimated using a combined index. We found a direct relationship between irradiance in the water column (Imean) and the light saturation parameter (Ik) and, a negative relationship between Imean and total phosphorus (TP) concentration. Lakes at the lowest and highest ends of TP tended to display the simplest phytoplankton communities (i.e., only one or two algal classes accounted for the total phytoplankton biovolume). In contrast, lakes with intermediate TP exhibited a more complex phytoplankton composition. Low values of phytoplankton abundance proxies (chlorophyll a and biovolume), species richness, and primary production could be observed at any combination of phosphorus and light availability. However, the highest values of the previous variables were observed only when the relative availability of both resources was similar. The combined index developed provides a single metric for describing light versus nutrient limitation. The importance of its use is that can be applied to the analysis of clear lakes lacking vegetation and inorganic turbid lakes, besides organic turbid and clear lakes with vegetation. © 2017, Springer International Publishing Switzerland.
author Queimaliños, Claudia Patricia
Izaguirre, Irina
Zagarese, Horacio Ernesto
author_facet Queimaliños, Claudia Patricia
Izaguirre, Irina
Zagarese, Horacio Ernesto
author_sort Queimaliños, Claudia Patricia
title Phytoplankton limitation in Patagonian and Pampean shallow lakes: effect of phosphorus and light
title_short Phytoplankton limitation in Patagonian and Pampean shallow lakes: effect of phosphorus and light
title_full Phytoplankton limitation in Patagonian and Pampean shallow lakes: effect of phosphorus and light
title_fullStr Phytoplankton limitation in Patagonian and Pampean shallow lakes: effect of phosphorus and light
title_full_unstemmed Phytoplankton limitation in Patagonian and Pampean shallow lakes: effect of phosphorus and light
title_sort phytoplankton limitation in patagonian and pampean shallow lakes: effect of phosphorus and light
publishDate 2018
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v816_n1_p91_Torremorell
http://hdl.handle.net/20.500.12110/paper_00188158_v816_n1_p91_Torremorell
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AT izaguirreirina phytoplanktonlimitationinpatagonianandpampeanshallowlakeseffectofphosphorusandlight
AT zagaresehoracioernesto phytoplanktonlimitationinpatagonianandpampeanshallowlakeseffectofphosphorusandlight
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