Influence of tubificid worms on nutrient fluxes across water-sediment interface in fish farm settling ponds

Puigagut, Jaume; Chazarenc, Florent; Comeau, Yves

doi:10.1051/kmae/2014010

Cited by 2 publications

(2 citation statements)

References 38 publications

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“…Nevertheless, we did not have any expectations about the influence of tubificid worms on the algal compartment: On the one hand, turbidity generated by worms may affect the growth of benthic algae (Krantzberg, ; Zhang, Shang, et al., ), but on the other hand, bioturbation may increase nutrient availability (e.g. Mermillod‐Blondin, Nogaro, Datry, Malard, & Gibert, ; Puigagut, Chazarenc, & Comeau, ; Zhang, Liu, Jeppesen, & Taylor, ) and thus stimulate algae. At last, the potential influence of tubificid worms on other benthic invertebrates remains largely unexplored.…”

Section: Introductionmentioning

confidence: 99%

Influence of tubificid worms on sediment structure, benthic biofilm and fauna in wetlands: A field enclosure experiment

et al. 2018

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Bioturbation activities of tubificid worms play a major role in nutrient cycling and microbial processes occurring at water–sediment interfaces of freshwater environments. Nevertheless, evidence of significant contributions of worms to ecosystem functioning largely arises from experiments performed at laboratory scales, because studies exploring the role of tubificid worms in the field are scarce. Therefore, this study aimed to test the influence of tubificid worms on benthic habitat structure and functioning in field experiments. According to literature, we predicted that feeding activities of tubificid worms would increase the percentage of clay and silt particles, the bacterial growth and microbial activities in the top sediment layer. The experiment was performed at the water–sediment interface of a shallow wetland. Enclosures with and without addition of the tubificid worm Limnodrilus hoffmeisteri were used to quantify the influences of tubificid worms on the sedimentary habitat (sediment grain size distribution, water‐filled porosity using microtomography), the biofilm (algal biomass, bacterial abundance, total organic carbon and total nitrogen, microbial enzymatic activity, photosynthetic activity and efficiency of the photosystem II) and the benthic fauna. Measures were performed before worm addition and at the end of the experiment. After 6 weeks, the proportion of fine sediment particles (<63 μm) and the water‐filled porosity were significantly modified by the bioturbation activities of tubificid worms. The bacterial abundance was stimulated by twofold, the microbial hydrolytic activity by +35% and the algal biomass by +40%. The field enclosures with and without L. hoffmeisteri showed differences in benthic invertebrate assemblages, especially for nematodes that were excluded from enclosures with worms. Our results indicate that bioturbation mechanisms and impacts reported from laboratory experiments with tubificid worms are not only significant at a field scale, but also highlight unpredicted interactions with other benthic organisms (autotrophic compartment of the biofilm and invertebrates).

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Section: Introductionmentioning

confidence: 99%

Influence of tubificid worms on sediment structure, benthic biofilm and fauna in wetlands: A field enclosure experiment

et al. 2018

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“…BMI are fundamental to the maintenance of aquatic ecosystems because they recover matter from sediment debris (Frauendorf et al 2013, Whiting et al 2011. BMI promote sediment oxygenation through bioturbation, which in turn affects biogeochemical cycles (Puigagut et al 2014, Shang et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Taxonomic and non-taxonomic responses of benthic macroinvertebrates to metal toxicity in tropical reservoirs. The case of Cantareira Complex, São Paulo, Brazil

Beghelli

Cetra

Marchese

et al. 2020

An. Acad. Bras. Ciênc.

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Benthic macroinvertebrates are organisms that are recognized as water quality bio-indicators. A wide variety of indices and metrics have been shown to respond to a variety of anthropogenic impacts, usually under a general condition of environmental impairment. The absence of a clear distinction in the relations between specific pollutants and biotic variables is very common and can lead to biased interpretation of biomonitoring. The aims of this research were to test taxonomic and non-taxonomic responses to specific environmental conditions instead to general conditions. For this purpose, we estimated the theoretical toxicity by comparing toxicity values published by EPA with metal concentrations in water and sediments. Then we tested the responses of biological variables to toxicity and other environmental conditions using the linear mixed effects models approach. We generated 32 models considering 24 different biological metrics and indices that were grouped in five levels. Taxonomic and abundance metrics were best predictor than functional or tolerance-based indexes. The strongest model was that which considered subfamily taxonomic resolution responding to Al_w and Cr_s.

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Influence of tubificid worms on nutrient fluxes across water-sediment interface in fish farm settling ponds

Cited by 2 publications

References 38 publications

Influence of tubificid worms on sediment structure, benthic biofilm and fauna in wetlands: A field enclosure experiment

Influence of tubificid worms on sediment structure, benthic biofilm and fauna in wetlands: A field enclosure experiment

Taxonomic and non-taxonomic responses of benthic macroinvertebrates to metal toxicity in tropical reservoirs. The case of Cantareira Complex, São Paulo, Brazil

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