The colonisation of leaf litter by Chironomidae (Diptera): The influence of chemical quality and exposure duration in a subtropical stream

Biasi, Cristiane; Tonin, Alan M.; Restello, Rozane Maria; Hepp, Luiz Ubiratan

doi:10.1016/j.limno.2013.01.006

Cited by 40 publications

(37 citation statements)

References 28 publications

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“…This may be due to several reasons: (i) insufficient numbers of a species were present in the stream during the time when the mesh bags were pre-exposed such that these species were rather unlikely to colonize the mesh bags; (ii) short duration of pre-exposure of the meshbags in the stream. Biasi et al (2013) found that the colonization of leaf litter bags considerably changed within 22 days of exposure in a stream; our 3-4 days may therefore have been too short to capture the entire macroinvertebrate assemblage present in the stream. However, a longer preexposure in the stream was undesired because the leaf litter would have been degraded already before the bags were exposed in the flumes.…”

Section: Differences In Invertebrate and Periphyton Composition Betwementioning

confidence: 96%

Effects of flow events and nutrient addition on stream periphyton and macroinvertebrates: an experimental study using flumes

Bækkelie

Schneider

Hagman

et al. 2017

Knowl. Manag. Aquat. Ecosyst.

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-We used flume experiments to study the effects of a temporary increase in stream flow on macroinvertebrates, leaf litter breakdown and soft-bodied benthic algae; both as a single stressor and eventually in combination with an increase in nutrient supply. In order to understand how well the flumes reflected the nearby stream ecosystem, we compared species composition of macroinvertebrates and benthic algae between the flumes and the nearby stream from which the flumes were supplied with water. As single stressors, nutrient addition and an increased flow velocity from 1.3 to 2.8 cm s À 1 lead to an increase in the biomass of benthic algae, likely reflecting an improved transfer of nutrients into algal patches. However, the combined effect of flow and nutrient addition was smaller than the sum of both individual effects, likely because an increased biomass also was more susceptible to scouring. We found differences in macroinvertebrate and benthic algal taxon identity and abundance between stream and flumes. Since biodiversity is assumed to stabilize ecological functioning in response to disturbances and variation, we conclude that care should be taken in applying results from small scale experiments to stream ecosystems. Nous avons utilisé des expériences en canaux pour étudier les effets d'une augmentation temporaire du débit sur les macroinvertébrés, la dégradation de la litière foliaire et les algues benthiques à corps mou, à la fois comme stresseur unique et éventuellement en combinaison avec une augmentation de l'apport en éléments nutritifs. Afin de comprendre dans quelle mesure les canaux reflétaient bien l'écosystème du cours d'eau voisin, nous avons comparé la composition spécifique des macroinvertébrés et des algues benthiques entre les canaux et le cours d'eau voisin qui alimentait les canaux en eau. En tant que stresseurs uniques, l'ajout de nutriments et une vitesse d'écoulement accrue de 1,3 à 2,8 cm s À 1 entraînent une augmentation de la biomasse des algues benthiques, ce qui reflète probablement un meilleur transfert des nutriments dans le périphyton algal. Toutefois, l'effet combiné du débit et de l'adjonction de nutriments était plus faible que la somme des deux effets individuels, probablement parce qu'une biomasse accrue était aussi plus susceptible de se décoller. Nous avons trouvé des différences dans l'identité et l'abondance des taxons de macroinvertébrés et des taxons d'algues benthiques entre le cours d'eau et les canaux. Puisque la biodiversité est supposée stabiliser le fonctionnement écologique en réponse aux perturbations et aux variations, nous concluons qu'il faut faire preuve de prudence dans l'application aux écosystèmes des cours d'eau des résultats d'expériences à petite échelle.

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Section: Differences In Invertebrate and Periphyton Composition Betwementioning

confidence: 96%

Effects of flow events and nutrient addition on stream periphyton and macroinvertebrates: an experimental study using flumes

Bækkelie

Schneider

Hagman

et al. 2017

Knowl. Manag. Aquat. Ecosyst.

View full text Add to dashboard Cite

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“…The distribution and composition of Chironomidae assemblages is related to the type of substrate, flow dynamics, water temperature and availability of organic matter of streams (Pinder, 1986;Berg, 1995;Sanseverino et al, 1998;Henriques-Oliveira et al, 2003;Amorim et al, 2004;Pinha, et al, 2013). Moreover, the group is affected by physical and chemical variables as a result of the different stages of organic matter decomposition, depending on both lotic site and microhabitat (Biasi et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effect of habitat heterogeneity in the composition and distribution of Chironomidae (Diptera) assemblage in different microhabitats of preserved streams in the Brazilian Atlantic Forest

et al. 2014

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Aim:This study aimed at to evaluate the influence of habitat heterogeneity on the attributes of richness, abundance, diversity and equitability of Chironomidae assemblage and also the biological differences in faunistic composition related to each microhabitat. Methods: The sampling was performed in summer (February) and winter (August) 2010, with Surber sampler, in three headwaters streams at Atlantic Forest, in southern Brazil. Results: In the total 6,429 Chironomidae larvae were identified and classified into 96 taxa belonging to Chironominae, Tanypodinae and Ortocladiinae subfamilies. Among the microhabitats, the highest richness was observed in the deposits of litter, and the highest number of exclusive species took place in the pool regions. Conclusions: Thus, the composition and structure of the Chironomidae assemblage are directly related to the availability and heterogeneity of habitats in streams.Keywords: substrate, microhabitat, conservation unit, benthic invertebrates, richness.Resumo: Objetivo: Este trabalho teve como objetivo avaliar a influência da heterogeneidade de habitats sobre os atributos de riqueza, abundância, diversidade e equitabilidade da assembleia de Chironomidae e também as diferenças biológicas na composição faunística relacionada a cada microhabitat. Métodos: As coletas foram realizadas no verão (fevereiro) e inverno (agosto) de 2010, com um amostrador tipo Surber. Resultados: As variáveis ambientais analisadas não foram significativamente diferentes entre os riachos amostrados, porém a riqueza taxonômica de larvas de Chironomidae foi distinta entre os microhabitats. Foram identificadas 6.469 larvas de Chironomidae distribuídas em 96 táxons pertencentes às subfamílias Chironominae, Tanypodinae e Ortocladiinae. Entre os microhabitats, a maior riqueza foi observada nos depósitos de folhiços em locais de remanso, onde também foram registrados os maiores números de espécies exclusivas. Conclusões: Portanto, a composição e estrutura da assembleia de Chironomidae estão diretamente relacionadas à heterogeneidade de habitats disponíveis nos riachos.Palavras-chave: substrato, microhabitat, unidade de conservação, invertebrados bentônicos, riqueza. Acta Limnologica Brasiliensia

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“…The input of allochthonous organic matter into the stream increases the environmental heterogeneity, and provides a refuge and food source for aquatic biota (Biasi et al, 2013;König et al, 2014). However, in this study, we believe that the litter bags acted specifically as a refuge, because of the lower density of shredders than in the streams with vegetation.…”

Section: Discussionmentioning

confidence: 68%

“…We excluded chironomid larvae from the analysis and the interpretation of results because they constitute a very abundant group in leaf litter decomposition (Ligeiro et al, 2010;Biasi et al, 2013). In additon, they perform an unclear ecological function in debris and have contained functional feeding groups (Sanseverino & Nessimian, 2008;Tonin et al, 2014).…”

Section: Associated Invertebrate Faunamentioning

confidence: 99%

Influence of land-use on structural and functional macroinvertebrate composition communities associated on detritus in Subtropical Atlantic Forest streams

et al. 2016

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Influence of land-use on structural and functional macroinvertebrate composition communities associated on detritus in Subtropical Atlantic Forest streamsInfluência do uso da terra sobre a composição estrutural e funcional da comunidade de macroinvertebrados associados a detritos em riachos subtropicais da Floresta Atlântica Abstract: Aim: Our aim in this study was to evaluate the effects of land use in drainage basins of the streams on the taxonomic and functional composition of aquatic invertebrate communities associated in leaf litter. Methods: We evaluated the colonisation of invertebrates in the incubated plant debris in streams with presence and absence of riparian vegetation and different land-uses in the drainage area. We used the litter bags approach. Results: The taxonomic and functional composition invertebrate associated with leaf litter ranged between streams. In addition, streams with presence of vegetation showed less variation taxonomic and functional composition communities. Still, the density of shredders invertebrates were lower in streams without vegetation. Conclusions: The riparian vegetation is an important environmental factor in the composition of invertebrates. However, the land-use throughout the drainage basin should be considered as relevant factor in structuring aquatic biota.

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The colonisation of leaf litter by Chironomidae (Diptera): The influence of chemical quality and exposure duration in a subtropical stream

Cited by 40 publications

References 28 publications

Effects of flow events and nutrient addition on stream periphyton and macroinvertebrates: an experimental study using flumes

Effects of flow events and nutrient addition on stream periphyton and macroinvertebrates: an experimental study using flumes

Effect of habitat heterogeneity in the composition and distribution of Chironomidae (Diptera) assemblage in different microhabitats of preserved streams in the Brazilian Atlantic Forest

Influence of land-use on structural and functional macroinvertebrate composition communities associated on detritus in Subtropical Atlantic Forest streams

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