Metabolic dependence of phytoplankton species richness
Aim: To analyse the dependence of phytoplankton species richness on temperature within the framework of the metabolic theory of ecology (MTE) with explicit consideration of its assumptions and predictions. Location: Lakes from the Southern Hemisphere - South America (Argentinean Pampa to Tierra del...
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2015
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paper:paper_1466822X_v24_n4_p472_Segura2023-06-08T16:16:53Z Metabolic dependence of phytoplankton species richness Izaguirre, Irina Saad, Juan Francisco America Antarctica Europe Lakes Metabolic theory of ecology Phytoplankton biodiversity biodiversity body size growth rate lake ecosystem phytoplankton relative abundance species richness temperature effect Antarctica Argentina Denmark Spain Tierra del Fuego [(PRV) Argentina] United States Aim: To analyse the dependence of phytoplankton species richness on temperature within the framework of the metabolic theory of ecology (MTE) with explicit consideration of its assumptions and predictions. Location: Lakes from the Southern Hemisphere - South America (Argentinean Pampa to Tierra del Fuego) and Antarctica - and Northern Hemisphere - North America (USA) and Europe (Denmark to Spain). Methods: The MTE proposes that natural logarithm of species richness and the inverse of temperature are linearly related, with a slope equal to the activation energy. The MTE assumes that the total community abundance, average body size and per species average community productivity are independent of the temperature. These predictions and assumptions are here evaluated using c. 660 phytoplankton lake communities and a literature review of 281 experimental measures of growth rate. Linear, curvilinear and segmented models were contrasted with empirical trends. Results: Temperature-richness relationships showed a three-phase segmented form in two of the three continents. Generally, at temperatures above 17°C and below 11°C there was a weak relationship or none. Intermediate temperatures showed the expected positive association with richness, but with steeper slopes (c. 1) than MTE expectations (c. 0.3). Statistical models including total community abundance and average body size explained up to 64% of the variance in richness. Main conclusions: In its original formulation the MTE is not a satisfactory model for large-scale richness patterns in phytoplankton. However, the MTE is able to better explain richness patterns when the temperature dependence of abundances and body size are explicitly accounted for in the model. These temperature dependences improve the performance of MTE predictions but question the interpretation of the richness-temperature slope as a measure of activation energy. The balance among activation energy, abundance and body size produced the observed segmented pattern in temperature-richness relationships for lake phytoplankton. © 2015 John Wiley & Sons Ltd. Fil:Izaguirre, I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Saad, J.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1466822X_v24_n4_p472_Segura http://hdl.handle.net/20.500.12110/paper_1466822X_v24_n4_p472_Segura |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
America Antarctica Europe Lakes Metabolic theory of ecology Phytoplankton biodiversity biodiversity body size growth rate lake ecosystem phytoplankton relative abundance species richness temperature effect Antarctica Argentina Denmark Spain Tierra del Fuego [(PRV) Argentina] United States |
| spellingShingle |
America Antarctica Europe Lakes Metabolic theory of ecology Phytoplankton biodiversity biodiversity body size growth rate lake ecosystem phytoplankton relative abundance species richness temperature effect Antarctica Argentina Denmark Spain Tierra del Fuego [(PRV) Argentina] United States Izaguirre, Irina Saad, Juan Francisco Metabolic dependence of phytoplankton species richness |
| topic_facet |
America Antarctica Europe Lakes Metabolic theory of ecology Phytoplankton biodiversity biodiversity body size growth rate lake ecosystem phytoplankton relative abundance species richness temperature effect Antarctica Argentina Denmark Spain Tierra del Fuego [(PRV) Argentina] United States |
| description |
Aim: To analyse the dependence of phytoplankton species richness on temperature within the framework of the metabolic theory of ecology (MTE) with explicit consideration of its assumptions and predictions. Location: Lakes from the Southern Hemisphere - South America (Argentinean Pampa to Tierra del Fuego) and Antarctica - and Northern Hemisphere - North America (USA) and Europe (Denmark to Spain). Methods: The MTE proposes that natural logarithm of species richness and the inverse of temperature are linearly related, with a slope equal to the activation energy. The MTE assumes that the total community abundance, average body size and per species average community productivity are independent of the temperature. These predictions and assumptions are here evaluated using c. 660 phytoplankton lake communities and a literature review of 281 experimental measures of growth rate. Linear, curvilinear and segmented models were contrasted with empirical trends. Results: Temperature-richness relationships showed a three-phase segmented form in two of the three continents. Generally, at temperatures above 17°C and below 11°C there was a weak relationship or none. Intermediate temperatures showed the expected positive association with richness, but with steeper slopes (c. 1) than MTE expectations (c. 0.3). Statistical models including total community abundance and average body size explained up to 64% of the variance in richness. Main conclusions: In its original formulation the MTE is not a satisfactory model for large-scale richness patterns in phytoplankton. However, the MTE is able to better explain richness patterns when the temperature dependence of abundances and body size are explicitly accounted for in the model. These temperature dependences improve the performance of MTE predictions but question the interpretation of the richness-temperature slope as a measure of activation energy. The balance among activation energy, abundance and body size produced the observed segmented pattern in temperature-richness relationships for lake phytoplankton. © 2015 John Wiley & Sons Ltd. |
| author |
Izaguirre, Irina Saad, Juan Francisco |
| author_facet |
Izaguirre, Irina Saad, Juan Francisco |
| author_sort |
Izaguirre, Irina |
| title |
Metabolic dependence of phytoplankton species richness |
| title_short |
Metabolic dependence of phytoplankton species richness |
| title_full |
Metabolic dependence of phytoplankton species richness |
| title_fullStr |
Metabolic dependence of phytoplankton species richness |
| title_full_unstemmed |
Metabolic dependence of phytoplankton species richness |
| title_sort |
metabolic dependence of phytoplankton species richness |
| publishDate |
2015 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1466822X_v24_n4_p472_Segura http://hdl.handle.net/20.500.12110/paper_1466822X_v24_n4_p472_Segura |
| work_keys_str_mv |
AT izaguirreirina metabolicdependenceofphytoplanktonspeciesrichness AT saadjuanfrancisco metabolicdependenceofphytoplanktonspeciesrichness |
| _version_ |
1768545242987888640 |