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Mary, Nathalie; Marmonier, Pierre

doi:10.1023/a:1003938629671

Cited by 17 publications

(4 citation statements)

References 24 publications

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“…Identification to species level and further investigations are required in order to better explain the pattern highlighted in this study. Oligochaetes and nematods were fairly represented in the HZ of the Tijuca River, although they were not dominant as previously observed in other studies (Mary and Marmonier, 2000;Lafont and Vivier, 2006). The high abundances in the HZ may be favoured by the worm-shaped body, that facilitates the movement in the interstices of HZ sediments (Omesová and Helešic, 2007;Omesová et al, 2008).…”

Section: Discussionsupporting

confidence: 53%

Hyporheic invertebrate assemblages at reach scale in a Neotropical stream in Brazil

2015

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In the Neotropical Region, information concerning hyporheic communities is virtually non-existent. We carried out a sampling survey in the hyporheic zone of the Tijuca River, in the Tijuca National Park, located in the urban area of the city of Rio de Janeiro. Biological samples from the hyporheic zone were collected in three different stream reaches, in June 2012. The main objectives were: 1) to describe the structure of invertebrate assemblages in the hyporheic zone of a neotropical stream; 2) to apply a reach-scale approach in order to investigate spatial patterns of the hyporheic assemblages in relation to hydrology, depth and microhabitat typology. A total of 1460 individuals were collected and identified in 31 taxa belonging to Nematoda, Annelida, Crustacea, Hydrachnidia and Insecta. The class Insecta dominated the upper layer of the hyporheic zone. Copepods were the most abundant taxon among crustaceans and occurred mostly in the upwelling areas of the reaches. The results of this study represent one of the few contributions so far about hyporheic invertebrate assemblages of the Neotropical Region.Keywords: hyporheic zone, Neotropical Region, stygobites, stygophiles, stygoxenes. Assembleia de invertebrados em grande escala em um riacho Neotropical no BrasilResumo Na Região Neotropical, informações sobre comunidades de invertebrados de zona hiporréica são praticamente inexistentes. Foi realizado um levantamento da zona hyporréica do Rio Tijuca, no Parque Nacional da Tijuca, localizado na área urbana da cidade do Rio de Janeiro. As amostras biológicas da zona hiporréica foram coletadas em três diferentes trechos do riacho, em junho de 2012. Os principais objetivos foram: 1) descrever a estrutura das assembléias de invertebrados na zona hiporréica de um riacho neotropical, 2) aplicar uma abordagem de grande escala de trecho de riacho com finalidade de investigar os padrões espaciais das assembléias hiporréicas em relação à hidrologia, profundidade e tipologia de microhabitat. Um total de 31 táxons foram identificados pertencentes à Nematoda, Annelida, Crustacea, Hydrachnidia e Insecta. A classe Insecta dominou a camada superior da zona hiporréica. Copépoda foi o taxon mais abundante entre os crustáceos e ocorreu principalmente nas áreas de resurgência de água. Os resultados deste estudo representam uma das poucas contribuições até o momento sobre assembléias de invertebrados de zona hiporréica em região Neotropical.Palavras-chave: zona hiporréica, Região Neotropical, estigóbios, estigófilos, estigóxenos.

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Section: Discussionsupporting

confidence: 53%

Hyporheic invertebrate assemblages at reach scale in a Neotropical stream in Brazil

2015

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“…Freshwater biodiversity is declining globally, with many highly specialized species suffering from severe declines in distribution and population sizes. In particular, species that depend on functional stream beds with high exchange rates between open water and interstitial are most crucially affected by declines, including semi-aquatic insects (e.g., [1][2][3][4][5][6]), freshwater fishes (e.g., [7][8][9][10][11]), and freshwater mussels such as the endangered freshwater pearl mussel (Margaritifera margaritifera), which is considered an important target species of conservation [12]. Freshwater pearl mussels have a complex life cycle that comprises a parasitic phase on a suitable fish host and a post-parasitic phase during which the juvenile mussels burrow within the stream bed for several years, depending on a well-oxygenated and permeable yet stable substrate, which is considered a main bottleneck for recruitment in most European populations [13].…”

Section: Introductionmentioning

confidence: 99%

Substratum Raking Can Restore Interstitial Habitat Quality in Swedish Freshwater Pearl Mussel Streams

et al. 2023

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Functional and oxygenated stream beds provide crucial habitat for multiple endangered stream taxa, including endangered freshwater mussels, fishes, and insect larvae. Stream bed restoration measures such as substrate raking are often applied to mitigate excess fine sediment introductions and stream bed colmation, yet such measures are controversial. In this study, we conducted a systematic experiment in which sites with stream bed raking and removal of macrophytes were monitored over two years and compared with before-treatment conditions and untreated reference sites in the Swedish Brånsån stream, which still contains a population of the endangered freshwater pearl mussel Margaritifera margaritifera. The stream bed restoration resulted in improved habitat quality, as evident from decreased substrate compaction, increased redox potential, and oxygen supply into the stream bed. In contrast to previous studies in Central European catchments with more intensive agricultural catchment uses, the effects of the restoration measure were much longer, extending over two years. Consequently, stream bed raking and macrophyte removal can be considered a useful and more long-lasting restoration measure than currently assumed, especially in streams where excess input of fine sediment has already been mitigated, where catchment land use is rather extensive, and where near-natural flow regimes still prevail.

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“…Sea plants, coral, fishes and sediments are accumulating pollutants, leading to serious disturbances of the ecosystem. Mining activity promotes sedimentation and leads to transition metals inputs [3][4]. Impacts of this pollution on human health, on living organisms and the whole ecosystem have been intensively studied since 1999 within the framework of the French National Programme on Coastal Environment (PNEC) [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…In freshwaters, cadmium is closely associated with colloidal and particulate matter and soluble specation is restricted to the free Cd 2þ ions together with CdCl 2 and CdSO 4 . In the sea 66% of cadmium is present as free Cd 2þ together with CdCO 3 (26%) and Cd(OH) 2 (5%), CdSO 4 (1%) and CdCl 2 (1%) [13].…”

Section: Introductionmentioning

confidence: 99%

Use of fluorescence spectroscopy and voltammetry for the analysis of metal-organic matter interactions in the New Caledonia lagoon

Merdy

Bonnefoy

Martias

et al. 2012

International Journal of Environmental Analytical Chemistry

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Untitled

Cited by 17 publications

References 24 publications

Hyporheic invertebrate assemblages at reach scale in a Neotropical stream in Brazil

Hyporheic invertebrate assemblages at reach scale in a Neotropical stream in Brazil

Substratum Raking Can Restore Interstitial Habitat Quality in Swedish Freshwater Pearl Mussel Streams

Use of fluorescence spectroscopy and voltammetry for the analysis of metal-organic matter interactions in the New Caledonia lagoon

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