Nutrient recycling, phytoplankton grazing, and associated impacts of Limnoperna fortunei

Laboratory and field experiments indicate that the presence of Limnoperna fortunei decreases concentrations of particulate organic matter and increases ammonia, nitrate, and especially phosphate. Long-term series of field data partially confirm these results. After having been colonized by the musse...

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Autores principales: Boltovskoy, D., Correa, N., Sylvester, F., Cataldo, D.
Formato: CHAP
Materias:
Cyanobacterial blooms
Ecological impact
Golden mussel
Grazing selectivity
Limnoperna fortunei
Microcystis
Nutrient recycling
Phytoplankton grazing
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_97833191_v_n_p153_Boltovskoy
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_97833191_v_n_p153_Boltovskoy2023-10-03T16:44:50Z Nutrient recycling, phytoplankton grazing, and associated impacts of Limnoperna fortunei Boltovskoy, D. Correa, N. Sylvester, F. Cataldo, D. Cyanobacterial blooms Ecological impact Golden mussel Grazing selectivity Limnoperna fortunei Microcystis Nutrient recycling Phytoplankton grazing Laboratory and field experiments indicate that the presence of Limnoperna fortunei decreases concentrations of particulate organic matter and increases ammonia, nitrate, and especially phosphate. Long-term series of field data partially confirm these results. After having been colonized by the mussel, a 47 km2 reservoir developed higher concentrations of ammonia and phosphates, a higher P:N ratio, more transparency, less seston, and less phytoplankton and primary production. Phytoplankton clearance rates by the mussel vary widely, suggesting that "normal" values for adult organisms are around 100 mL/ind./h, or ca. 2-4 mL/mg DW/h. Data on grazing selectivity are inconclusive, but seem to indicate highest impacts on small (< 1 mm) particles. Large plankton are negatively selected, but they may account for greater proportions of total biomass in the diet. Studies on consumption of toxic cyanobacteria yield conflicting results, but large golden mussel populations significantly enhance blooms of colonial Microcystis spp. through changes in nutrient availability, size-selective grazing, promotion of colony formation, and reduced grazing of toxic cells. These toxic blooms, in turn, suppress reproduction of the mussel, most probably killing the larvae. Growth of periphyton and aquatic macrophytes are enhanced significantly by the golden mussel. © Springer International Publishing Switzerland 2015. Fil:Boltovskoy, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Correa, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Sylvester, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cataldo, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. CHAP info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_97833191_v_n_p153_Boltovskoy
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cyanobacterial blooms
Ecological impact
Golden mussel
Grazing selectivity
Limnoperna fortunei
Microcystis
Nutrient recycling
Phytoplankton grazing
spellingShingle Cyanobacterial blooms
Ecological impact
Golden mussel
Grazing selectivity
Limnoperna fortunei
Microcystis
Nutrient recycling
Phytoplankton grazing
Boltovskoy, D.
Correa, N.
Sylvester, F.
Cataldo, D.
Nutrient recycling, phytoplankton grazing, and associated impacts of Limnoperna fortunei
topic_facet Cyanobacterial blooms
Ecological impact
Golden mussel
Grazing selectivity
Limnoperna fortunei
Microcystis
Nutrient recycling
Phytoplankton grazing
description Laboratory and field experiments indicate that the presence of Limnoperna fortunei decreases concentrations of particulate organic matter and increases ammonia, nitrate, and especially phosphate. Long-term series of field data partially confirm these results. After having been colonized by the mussel, a 47 km2 reservoir developed higher concentrations of ammonia and phosphates, a higher P:N ratio, more transparency, less seston, and less phytoplankton and primary production. Phytoplankton clearance rates by the mussel vary widely, suggesting that "normal" values for adult organisms are around 100 mL/ind./h, or ca. 2-4 mL/mg DW/h. Data on grazing selectivity are inconclusive, but seem to indicate highest impacts on small (< 1 mm) particles. Large plankton are negatively selected, but they may account for greater proportions of total biomass in the diet. Studies on consumption of toxic cyanobacteria yield conflicting results, but large golden mussel populations significantly enhance blooms of colonial Microcystis spp. through changes in nutrient availability, size-selective grazing, promotion of colony formation, and reduced grazing of toxic cells. These toxic blooms, in turn, suppress reproduction of the mussel, most probably killing the larvae. Growth of periphyton and aquatic macrophytes are enhanced significantly by the golden mussel. © Springer International Publishing Switzerland 2015.
format CHAP
author Boltovskoy, D.
Correa, N.
Sylvester, F.
Cataldo, D.
author_facet Boltovskoy, D.
Correa, N.
Sylvester, F.
Cataldo, D.
author_sort Boltovskoy, D.
title Nutrient recycling, phytoplankton grazing, and associated impacts of Limnoperna fortunei
title_short Nutrient recycling, phytoplankton grazing, and associated impacts of Limnoperna fortunei
title_full Nutrient recycling, phytoplankton grazing, and associated impacts of Limnoperna fortunei
title_fullStr Nutrient recycling, phytoplankton grazing, and associated impacts of Limnoperna fortunei
title_full_unstemmed Nutrient recycling, phytoplankton grazing, and associated impacts of Limnoperna fortunei
title_sort nutrient recycling, phytoplankton grazing, and associated impacts of limnoperna fortunei
url http://hdl.handle.net/20.500.12110/paper_97833191_v_n_p153_Boltovskoy
work_keys_str_mv AT boltovskoyd nutrientrecyclingphytoplanktongrazingandassociatedimpactsoflimnopernafortunei
AT correan nutrientrecyclingphytoplanktongrazingandassociatedimpactsoflimnopernafortunei
AT sylvesterf nutrientrecyclingphytoplanktongrazingandassociatedimpactsoflimnopernafortunei
AT cataldod nutrientrecyclingphytoplanktongrazingandassociatedimpactsoflimnopernafortunei
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