Zooplankton response to shading effects of free-floating plants in shallow warm temperate lakes: A field mesocosm experiment

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Dense mats of free floating plants (FFP) often produce severe underwater light attenuation and strong oxygen depletion in the water column. In this study, we experimentally assessed the zooplankton response to artificial shading using field mesocosms. During 30 days, we simulated three different lig...

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Autores principales:	Fontanarrosa, Maria Soledad, Chaparro, Griselda Noemi, De Tezanos Pinto, Paula, Rodríguez, Patricia Laura, O'Farrell, Inés
Publicado:	2010
Materias:	Anoxia Field experiment Light attenuation Shallow lake Anoxic conditions Artificial shading Cascading effects Driving forces Force shaping Mesocosms Oxygen depletion Oxygen dynamics Oxygen limitation Resource availability Shading effect Shallow lakes Structure and dynamics Subtropical lakes Subtropical shallow lakes Temporal variation Top down effects Top-down control Topdown Water columns Zooplankton assemblages Zooplankton dynamics Algae control Animals Electromagnetic wave attenuation Lakes Light Oxygen Phytoplankton Experiments anoxia anoxic conditions herbivore lake ecosystem light attenuation mesocosm persistence phytoplankton resource availability shading simulation temporal variation top-down control water column zooplankton
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v646_n1_p231_Fontanarrosa http://hdl.handle.net/20.500.12110/paper_00188158_v646_n1_p231_Fontanarrosa
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00188158_v646_n1_p231_Fontanarrosa
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spelling	paper:paper_00188158_v646_n1_p231_Fontanarrosa2023-06-08T14:39:54Z Zooplankton response to shading effects of free-floating plants in shallow warm temperate lakes: A field mesocosm experiment Fontanarrosa, Maria Soledad Chaparro, Griselda Noemi De Tezanos Pinto, Paula Rodríguez, Patricia Laura O'Farrell, Inés Anoxia Field experiment Light attenuation Shallow lake Anoxic conditions Artificial shading Cascading effects Driving forces Field experiment Force shaping Light attenuation Mesocosms Oxygen depletion Oxygen dynamics Oxygen limitation Resource availability Shading effect Shallow lakes Structure and dynamics Subtropical lakes Subtropical shallow lakes Temporal variation Top down effects Top-down control Topdown Water columns Zooplankton assemblages Zooplankton dynamics Algae control Animals Electromagnetic wave attenuation Lakes Light Oxygen Phytoplankton Experiments anoxia anoxic conditions herbivore lake ecosystem light attenuation mesocosm persistence phytoplankton resource availability shading simulation temporal variation top-down control water column zooplankton Dense mats of free floating plants (FFP) often produce severe underwater light attenuation and strong oxygen depletion in the water column. In this study, we experimentally assessed the zooplankton response to artificial shading using field mesocosms. During 30 days, we simulated three different light scenarios by mimicking the persistence, absence, and fluctuation of FFP typically encountered in vegetated shallow subtropical lakes. We used dark meshes to simulate the abiotic effects engineered by FFP. Both in the permanently covered and fluctuating situations, anoxia impaired zooplankton development. Anoxia constituted a major driving force in shaping the zooplankton response, whereas the feeding resource availability (phytoplankton) seemed to play a minor role; no top down effect on phytoplankton occurred in anoxic situations. In the fluctuating cover regime (periodic darkness and anoxia), the temporal variation of nanophytoplankton was not affected by zooplankton; once again oxygen availability seemed the main force shaping the zooplankton dynamics. Either periodical or permanent shading, associated to anoxic conditions, impaired the success of small herbivores. Large herbivores and microphytoplankton were negatively affected only under persistent shade and anoxia. In contrast, when neither light nor oxygen limitation occurred, such as in the scenario without shading, top-down control occurred. This study highlights the importance that the oxygen dynamics driven by the presence of FFP exert on the structure and dynamics of zooplankton assemblages and on the top down cascading effects on phytoplankton in warm temperate or subtropical shallow lakes. © Springer Science+Business Media B.V. 2010. Fil:Fontanarrosa, M.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Chaparro, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:de Tezanos Pinto, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rodriguez, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:O'Farrell, I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v646_n1_p231_Fontanarrosa http://hdl.handle.net/20.500.12110/paper_00188158_v646_n1_p231_Fontanarrosa
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Anoxia Field experiment Light attenuation Shallow lake Anoxic conditions Artificial shading Cascading effects Driving forces Field experiment Force shaping Light attenuation Mesocosms Oxygen depletion Oxygen dynamics Oxygen limitation Resource availability Shading effect Shallow lakes Structure and dynamics Subtropical lakes Subtropical shallow lakes Temporal variation Top down effects Top-down control Topdown Water columns Zooplankton assemblages Zooplankton dynamics Algae control Animals Electromagnetic wave attenuation Lakes Light Oxygen Phytoplankton Experiments anoxia anoxic conditions herbivore lake ecosystem light attenuation mesocosm persistence phytoplankton resource availability shading simulation temporal variation top-down control water column zooplankton
spellingShingle	Anoxia Field experiment Light attenuation Shallow lake Anoxic conditions Artificial shading Cascading effects Driving forces Field experiment Force shaping Light attenuation Mesocosms Oxygen depletion Oxygen dynamics Oxygen limitation Resource availability Shading effect Shallow lakes Structure and dynamics Subtropical lakes Subtropical shallow lakes Temporal variation Top down effects Top-down control Topdown Water columns Zooplankton assemblages Zooplankton dynamics Algae control Animals Electromagnetic wave attenuation Lakes Light Oxygen Phytoplankton Experiments anoxia anoxic conditions herbivore lake ecosystem light attenuation mesocosm persistence phytoplankton resource availability shading simulation temporal variation top-down control water column zooplankton Fontanarrosa, Maria Soledad Chaparro, Griselda Noemi De Tezanos Pinto, Paula Rodríguez, Patricia Laura O'Farrell, Inés Zooplankton response to shading effects of free-floating plants in shallow warm temperate lakes: A field mesocosm experiment
topic_facet	Anoxia Field experiment Light attenuation Shallow lake Anoxic conditions Artificial shading Cascading effects Driving forces Field experiment Force shaping Light attenuation Mesocosms Oxygen depletion Oxygen dynamics Oxygen limitation Resource availability Shading effect Shallow lakes Structure and dynamics Subtropical lakes Subtropical shallow lakes Temporal variation Top down effects Top-down control Topdown Water columns Zooplankton assemblages Zooplankton dynamics Algae control Animals Electromagnetic wave attenuation Lakes Light Oxygen Phytoplankton Experiments anoxia anoxic conditions herbivore lake ecosystem light attenuation mesocosm persistence phytoplankton resource availability shading simulation temporal variation top-down control water column zooplankton
description	Dense mats of free floating plants (FFP) often produce severe underwater light attenuation and strong oxygen depletion in the water column. In this study, we experimentally assessed the zooplankton response to artificial shading using field mesocosms. During 30 days, we simulated three different light scenarios by mimicking the persistence, absence, and fluctuation of FFP typically encountered in vegetated shallow subtropical lakes. We used dark meshes to simulate the abiotic effects engineered by FFP. Both in the permanently covered and fluctuating situations, anoxia impaired zooplankton development. Anoxia constituted a major driving force in shaping the zooplankton response, whereas the feeding resource availability (phytoplankton) seemed to play a minor role; no top down effect on phytoplankton occurred in anoxic situations. In the fluctuating cover regime (periodic darkness and anoxia), the temporal variation of nanophytoplankton was not affected by zooplankton; once again oxygen availability seemed the main force shaping the zooplankton dynamics. Either periodical or permanent shading, associated to anoxic conditions, impaired the success of small herbivores. Large herbivores and microphytoplankton were negatively affected only under persistent shade and anoxia. In contrast, when neither light nor oxygen limitation occurred, such as in the scenario without shading, top-down control occurred. This study highlights the importance that the oxygen dynamics driven by the presence of FFP exert on the structure and dynamics of zooplankton assemblages and on the top down cascading effects on phytoplankton in warm temperate or subtropical shallow lakes. © Springer Science+Business Media B.V. 2010.
author	Fontanarrosa, Maria Soledad Chaparro, Griselda Noemi De Tezanos Pinto, Paula Rodríguez, Patricia Laura O'Farrell, Inés
author_facet	Fontanarrosa, Maria Soledad Chaparro, Griselda Noemi De Tezanos Pinto, Paula Rodríguez, Patricia Laura O'Farrell, Inés
author_sort	Fontanarrosa, Maria Soledad
title	Zooplankton response to shading effects of free-floating plants in shallow warm temperate lakes: A field mesocosm experiment
title_short	Zooplankton response to shading effects of free-floating plants in shallow warm temperate lakes: A field mesocosm experiment
title_full	Zooplankton response to shading effects of free-floating plants in shallow warm temperate lakes: A field mesocosm experiment
title_fullStr	Zooplankton response to shading effects of free-floating plants in shallow warm temperate lakes: A field mesocosm experiment
title_full_unstemmed	Zooplankton response to shading effects of free-floating plants in shallow warm temperate lakes: A field mesocosm experiment
title_sort	zooplankton response to shading effects of free-floating plants in shallow warm temperate lakes: a field mesocosm experiment
publishDate	2010
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v646_n1_p231_Fontanarrosa http://hdl.handle.net/20.500.12110/paper_00188158_v646_n1_p231_Fontanarrosa
work_keys_str_mv	AT fontanarrosamariasoledad zooplanktonresponsetoshadingeffectsoffreefloatingplantsinshallowwarmtemperatelakesafieldmesocosmexperiment AT chaparrogriseldanoemi zooplanktonresponsetoshadingeffectsoffreefloatingplantsinshallowwarmtemperatelakesafieldmesocosmexperiment AT detezanospintopaula zooplanktonresponsetoshadingeffectsoffreefloatingplantsinshallowwarmtemperatelakesafieldmesocosmexperiment AT rodriguezpatricialaura zooplanktonresponsetoshadingeffectsoffreefloatingplantsinshallowwarmtemperatelakesafieldmesocosmexperiment AT ofarrellines zooplanktonresponsetoshadingeffectsoffreefloatingplantsinshallowwarmtemperatelakesafieldmesocosmexperiment
_version_	1768544760986861568

Zooplankton response to shading effects of free-floating plants in shallow warm temperate lakes: A field mesocosm experiment

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