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Effects of food web structure and resource subsidies on the patterns and mechanisms of temporal coherence in a tropical coastal lagoon: an experimental mesocosm approach/Efeitos da estrutura da teia trófica e de subsídios de recursos nos padrões e mecanismos de coerência temporal em uma lagoa costeira tropical: uma abordagem experimental em mesocosmos

Carneiro, Luciana Silva ; Caliman, Adriano ; Guariento, Rafael Dettogni ; Rocha, Adriana de Melo ; Quesado, Leticia Barbosa ; Fonte, Ellen da Silva ; Santangelo, Jayme Magalhães ; Leal, João José Fonseca ; Lopes, Paloma Marinho ; Meirelles-Pereira, Frederico ; Esteves, Francisco de Assis ; Bozelli, Reinaldo Luiz

Acta limnológica brasiliensia, 2013-07, Vol.25 (3), p.315-315 [Periódico revisado por pares]

Botucatu: Associação Brasileira de Limnologia

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  • Título:
    Effects of food web structure and resource subsidies on the patterns and mechanisms of temporal coherence in a tropical coastal lagoon: an experimental mesocosm approach/Efeitos da estrutura da teia trófica e de subsídios de recursos nos padrões e mecanismos de coerência temporal em uma lagoa costeira tropical: uma abordagem experimental em mesocosmos
  • Autor: Carneiro, Luciana Silva ; Caliman, Adriano ; Guariento, Rafael Dettogni ; Rocha, Adriana de Melo ; Quesado, Leticia Barbosa ; Fonte, Ellen da Silva ; Santangelo, Jayme Magalhães ; Leal, João José Fonseca ; Lopes, Paloma Marinho ; Meirelles-Pereira, Frederico ; Esteves, Francisco de Assis ; Bozelli, Reinaldo Luiz
  • É parte de: Acta limnológica brasiliensia, 2013-07, Vol.25 (3), p.315-315
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
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  • Descrição: In this paper, the authors conducted a field mesocosm experiment to test the following hypotheses: 1. Nutrient enrichment would reduce the temporal coherence of system variables. 2. Fish predation would enhance the temporal coherence of system variables. 3. Strength of temporal coherence decreases from physical (water transparency), to chemical (dissolved oxygen concentration [DO]) to biological variables (total zooplankton biomass). For 11 weeks, we manipulated fish presence and nutrient (N and P) concentration in a 2 x 2 factorial design in sixteen within-lake enclosures installed in a tropical coastal lagoon. Coherence was estimated by pair-to-pair Pearson's moment correlations of the temporal trajectories of each response variable among enclosures of the same treatment. Fish presence only enhanced the temporal coherence of zooplankton biomass, whereas contrary to the expectations, nutrient addition enhanced the temporal coherence of [DO]. The strength of the individual effects of fish and nutrients on temporal coherence was affected by variable identity, but this variation did not occur in a consistent pattern across variables.
  • Editor: Botucatu: Associação Brasileira de Limnologia
  • Idioma: Português;Inglês

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