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, M.S., Chaparro, G., de Tezanos Pinto, P., Rodriguez, P., O'Farrell, I.
Formato: JOUR
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: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
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spelling todo:paper_00188158_v646_n1_p231_Fontanarrosa2023-10-03T14:16:03Z Zooplankton response to shading effects of free-floating plants in shallow warm temperate lakes: A field mesocosm experiment Fontanarrosa, M.S. Chaparro, G. de Tezanos Pinto, P. Rodriguez, P. O'Farrell, I. 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. 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_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, M.S.
Chaparro, G.
de Tezanos Pinto, P.
Rodriguez, P.
O'Farrell, I.
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.
format JOUR
author Fontanarrosa, M.S.
Chaparro, G.
de Tezanos Pinto, P.
Rodriguez, P.
O'Farrell, I.
author_facet Fontanarrosa, M.S.
Chaparro, G.
de Tezanos Pinto, P.
Rodriguez, P.
O'Farrell, I.
author_sort Fontanarrosa, M.S.
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
url http://hdl.handle.net/20.500.12110/paper_00188158_v646_n1_p231_Fontanarrosa
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