The role of Campsurus notatus (Ephemeroptera: Polymitarcytidae) bioturbation and sediment quality on potential gas fluxes in a tropical lake

Leal, João José Fonseca; Furtado, André Luiz dos Santos; Esteves, Francisco de Assis; Bozelli, Reinaldo Luiz; Figueiredo‐Barros, Marcos Paulo

doi:10.1007/s10750-006-0570-9

Cited by 23 publications

(17 citation statements)

References 36 publications

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“…Different processes may underlie the fish‐induced reduction in ebullition. For one, bioturbation may physically prevent bubbles from building up in the sediment (as suggested by Leal et al., ) through the mixing of pore‐water with more diluted water overlaying the sediment thereby impeding CH 4 concentrations in the pore‐water to reach the saturation concentration and hence prevent bubble formation. For another, bioturbation may impede the formation of bubbles by enhancing CH 4 oxidation or decreasing CH 4 production.…”

Section: Discussionsupporting

confidence: 83%

“…Ebullitive fluxes are known to be strongly influenced by warming, often even more so than diffusive fluxes (Aben et al, 2017). Ebullition was not related to temperature in our mesocosms, which may be ex- in the sediment (as suggested by Leal et al, 2007) through the mixing of pore-water with more diluted water overlaying the sediment thereby impeding CH 4 concentrations in the pore-water to reach the saturation concentration and hence prevent bubble formation.…”

Section: Fish Effects On Ch 4 Emissionsmentioning

confidence: 73%

“…the emission of CH 4 from the sediment to the atmosphere via bubbles (Bastviken, ). The physical disturbance of the sediment may prevent the build‐up of gas bubbles in the sediment and reduce the ebullitive flux of CH 4 to the atmosphere (as suggested by Leal, Dos Santos Furtado, De Assis Esteves, Bozelli, & Figueiredo‐Barros, ). Considering the fact that ebullition often is the most important pathway of CH 4 release to the atmosphere (Bastviken, Tranvik, Downing, Crill, & Enrich‐Prast, ) and strongly contributes to total greenhouse gas (GHG) emissions (DelSontro, Boutet, St‐Pierre, Del Giorgio, & Prairie, ), potential effects of bioturbating fish are important to take into account.…”

Section: Introductionmentioning

confidence: 99%

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Benthivorous fish bioturbation reduces methane emissions, but increases total greenhouse gas emissions

et al. 2018

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Globally, aquatic systems face increasing challenges with respect to increased greenhouse gas (GHG) emissions, eutrophication and strongly altered fish community composition. Although it is known that benthivorous fish can influence sediment and water column biogeochemistry, studies showing causal relationships are largely lacking. Here, we used a mesocosm approach with Common carp (Cyprinus carpio) to unravel the effects of bioturbation on GHG and nutrient dynamics. We hypothesised that fish bioturbation decreases methane (CH4) emissions and increases carbon dioxide (CO2) emissions by increased sediment oxygenation. Additionally, lower phosphorus (P) mobilisation was expected due to increased binding to ferric iron (Fe3+). We found that benthivorous fish increased water turbidity, and reduced CH4 diffusion to the atmosphere by 33%, and ebullition by 67%, probably because of sediment oxygenation. Simultaneously, however, CO2 emissions increased due to higher aerobic decomposition, leading to higher overall GHG emissions. In contrast to our hypothesis, we did not find indications of bioturbation affecting P mobilisation from the sediment, probably because P binding was already high in the control treatment as a result of high porewater Fe:P ratios. We conclude that bioturbation by fish has strong effects on GHG emissions as a result of higher overall decomposition rates offsetting reduced CH4 emissions. Depending on porewater Fe:P ratios, benthivorous fish may additionally reduce P mobilisation.

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Section: Discussionsupporting

confidence: 83%

Section: Fish Effects On Ch 4 Emissionsmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

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Benthivorous fish bioturbation reduces methane emissions, but increases total greenhouse gas emissions

et al. 2018

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“…The impact of bioturbation by Campsurus notatus (Ephemeroptera: Polymitarcytidae) on potential gas fluxes in the sediment of Lake Batata was studied by Leal et al (2007). who reported that the new substratum of the lake decreased methane concentrations in sediment and water column.…”

Section: Restoration and Treatmentmentioning

confidence: 99%

Lake and Reservoir Management

Gantzer¹,

Singleton²,

Little³

2008

Water Environment Research

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“…In aquatic ecosystems, bioturbation by benthic invertebrates is a key process altering microbial community structure and geochemical gradients of sediments and regenerating multiple nutrients across the benthic-pelagic interface (Kristensen et al, 2012). Although numerous studies have evaluated the importance of invertebrate bioturbators to the fluxes of inorganic nutrients (mostly N and P) across the sediment-water interface (Emmerson et al, 2001;Leal et al, 2003;Caliman et al, 2011), only a handful studies have tested the effects of invertebrate bioturbators on CH 4 cycling in sediments (see Kajan and Frenzel, 1999;Leal et al, 2007;Figueiredo-Barros et al, 2009) and no study to date has evaluated the effects of bioturbators biodiversity on sediment CH 4 concentration (hereafter [CH 4 ]). This neglect is important for some different reasons.…”

mentioning

confidence: 99%

Biodiversity effects of benthic ecosystem engineers on the spatial patterns of sediment CH4 concentration in an urban Neotropical coastal lagoon

Caliman¹,

Carneiro²,

Leal³

et al. 2013

Acta Limnol. Bras.

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Aim: Biodiversity of sediment bioturbators has been shown to be important for to the magnitude and stability of benthic-pelagic processes. However, no study to date has evaluated the importance of the biodiversity of benthic invertebrate bioturbators to the spatial patterns of sediment CH 4 concentration ([CH 4 ]). Here we conducted a laboratorial experiment to test the following predictions: (1) Bioturbator species richness will reduce the sediment [CH 4 ]; (2) individual bioturbator species (i.e. species composition) will have different effects on sediment [CH 4 ]; (3) and both the effects of bioturbator species richness and composition on sediment [CH 4 ] will be dependent on sediment depth. Methods: We manipulated the number and composition of three functional divergent benthic invertebrate bioturbators species that are widespread in South Atlantic coastal lagoons, in laboratorial sediment chambers containing the sediment and water of an urban impacted coastal lagoon Results: Bioturbator species richness had no overall significant effect on sediment [CH 4 ] when comparisons of sediment [CH 4 ] were made among species richness levels. However, bioturbator species richness significantly reduced sediment [CH 4 ] when species richness levels were compared to the control (defaunated treatments), but this effect was significant only at the deepest sediment layer. Furthermore, bioturbator species composition had significant, but distinct effects on the patterns of reduction in sediment [CH 4 ], depending on the sediment depth and the bioturbator species. Conclusions: We conclude that both the number and composition of bioturbator species are important to determine the effects of benthic bioturbators on spatial patterns of sediment [CH 4 ], but the strength of these effects depend on species traits that determine interspecific interactions strength across the sediment vertical niche space.

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The role of Campsurus notatus (Ephemeroptera: Polymitarcytidae) bioturbation and sediment quality on potential gas fluxes in a tropical lake

Cited by 23 publications

References 36 publications

Benthivorous fish bioturbation reduces methane emissions, but increases total greenhouse gas emissions

Benthivorous fish bioturbation reduces methane emissions, but increases total greenhouse gas emissions

Lake and Reservoir Management

Biodiversity effects of benthic ecosystem engineers on the spatial patterns of sediment CH4 concentration in an urban Neotropical coastal lagoon

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