Micro-distribution of oligochaetes in a soft-bottomed lowland stream (Elsbeek; The Netherlands)

Verdonschot, P.F.M.

doi:10.1007/978-94-011-4207-6_15

Cited by 15 publications

(19 citation statements)

References 18 publications

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“…The current speed, organic matter structure (diameter of fragments) and mineral substrates (grain size) are important factors in distribution and abundance of Oligochaeta (Martinez-Ansemil & Collado 1996, Sauter & Gude 1996, Verdonschot 1999). In our study, the Tubificidae Aulodrilus limnobius, Limnodrilus neotropicus, and L. hoffmeisteri were associated with slow flow habitat containing fine organic matter and leaves and branches from the terrestrial environment.…”

Section: Resultsmentioning

confidence: 99%

Oligochaeta (Annelida, Clitellata) of lotic environments at Parque Estadual Intervales (São Paulo, Brazil)

Alves

Marchese²,

Martins

2008

Biota Neotrop.

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Studies on benthic macroinvertebrates of lotic environments usually focus on the occurrence, distribution, and richness of aquatic insects and decapod crustaceans. Only rarely these studies include the Oligochaeta. The aim of the present study was to examine the occurrence and species richness of Oligochaeta in different substrata patches of lotic environments. The studied included seven stream sites at Parque Estadual Intervales (São Paulo, Brazil). Stream sites differed in size and ranged from first to fourth order. In each stream, qualitative collections were made using a D-type net sampler with 0.21 mm mesh. Measures of pH, electrical conductivity, dissolved oxygen, temperature and water turbidity were taken in the studied sites during collections of Oligochaeta. Specimens of the Tubificidae (including Naidinae) and Enchytraeidae families were collected. The Tubificidae Aulodrilus limnobius, Limnodrilus neotropicus and Limnodrilus hoffmeisteri were associated with low-flow habitats containing fine organic material. The most representative species among the Naidinae, Nais communis, was predominantly associated with rocky substrates present in fast current locations. The two other Naidinae species, Pristina osborni and Amphichaeta leydigi, presented low frequency in the studied streams. The Enchytraeidae family was present in only one of the sampled habitats. Keywords: Atlantic Forest, Enchytraeidae, Tubificidae, Naidinae. Resumo: Estudos sobre macroinvertebrados bentônicos de ambientes lóticos geralmente focam na ocorrência, distribuição e riqueza de insetos aquáticos e de crustáceos decápodos. Tais estudos apenas raramente incluem Oligochaeta. O objetivo do presente estudo foi examinar a ocorrência e riqueza de espécies de Oligochaeta de diferentes substratos em ambientes lóticos. O estudo incluiu sete riachos do Parque Estadual Intervales (São Paulo, Brasil). Os riachos estudados variaram em tamanho desde primeira até quarta ordem. Em cada ambiente, foram realizadas coletas qualitativas utilizando amostrador do tipo rede em D com malha 0,21 mm. Simultaneamente às coletas de Oligochaeta foram tomadas medidas do pH, condutividade elétrica, oxigênio dissolvido, temperatura e turbidez da água dos ambientes. Foram coletados exemplares das famílias Tubificidae (incluindo Naidinae) e Enchytraeidae. Os Tubificidae Aulodrilus limnobius, Limnodrilus neotropicus e Limnodrilus hoffmeisteri estiveram associados à habitats com pouca correnteza e substrato contendo material orgânico fino. Nais communis espécie mais representativa entre os Naidinae, esteve predominantemente associada a substratos rochosos presentes em locais de correntes rápidas. As duas outras espécies de Naidinae, Pristina osborni e Amphichaeta leydigi apresentaram baixa freqüência nos córregos analisados. A família Enchytraeidae esteve presente somente em um dos ambientes amostrados.

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Section: Resultsmentioning

confidence: 99%

Oligochaeta (Annelida, Clitellata) of lotic environments at Parque Estadual Intervales (São Paulo, Brazil)

Alves

Marchese²,

Martins

2008

Biota Neotrop.

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“…The Netherlands mainly consist of lowland streams that are more or less eutrophied (Verdonschot, 1999), in strong contrast to the Czech Republic and Austria, which are represented by mountain streams with much lower nutrient concentrations.…”

Section: Discussionmentioning

confidence: 99%

Beyond Masses and Blooms: The Indicative Value of Oligochaetes

Verdonschot¹

2006

Hydrobiologia

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The European Water Framework Directive (WFD) defines a framework for assessing water bodies in Europe in the future. The conditions in the Directive impose a strong demand for ''new'' assessment systems. The AQEM project developed an assessment system for European streams using macroinvertebrates. Almost 900 samples were taken in about 400 streams covering 29 stream types distributed over eight countries. The role of the Oligochaeta within this European database was analysed. Almost half a million specimens of oligochaetes were collected in 772 samples. Eight families, 41 genera and 69 species were recorded, although identification emphasised the families Tubificidae and Naididae. Three countries identified oligochaetes to species level, most others restricted their identifications to easy identifiable taxa. Numbers of specimens, species, genera and families differed strongly between the countries due to method, although standardised, and taxonomic knowledge. About 50% of all collected oligochaete taxa had assigned biological and ecological indicator values for metric calculation in the AQEM assessment system. A further refinement of this indication list as well as increased coverage of oligochaete taxa was advised. Weighted averaging was used to evaluate the relation between oligochaete distribution and ecological quality class. It was concluded that when higher taxonomic levels are used in assessment, the quality evaluation results become biased. Furthermore, oligochaetes can tell us much more about the ecological status of streams than is commonly assumed. Differences in ecological optima among Limnodrilus udekemianus, Ilyodrilus templetoni, Aulodrilus pluriseta, Nais communis, and Spirosperma ferox are shown.

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“…Without polluted sludge, these species are not collected, even if the interstitial water is polluted. The ecological preferences of oligochaete species are also dependant upon the salinity of waters (Leland & Fend, 1998), habitat heterogeneity (Carter & Fend, 2001) and time (Verdonschot, 1999). But the hyporheic system is less sensitive to physical disturbances like floods than the benthic system, and its consideration in the ecological studies of watercourses has been recommended (Boulton, 2000;Boulton et al 2003;Hynes, 1983;Lafont, 2001;Petts, 2000).…”

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confidence: 99%

Surface and Hyporheic Oligochaete Assemblages in a French Suburban Stream

Lafont¹,

Vivier

Nogueira³

et al. 2006

Hydrobiologia

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Nous mettons ce document à disposition sous cette forme dans le but d'assurer la plus grande diffusion de nos travaux scientifiques et techniques, en particulier auprès des étudiants. Le copyright et tous les droits restent la propriété des auteurs et des éditeurs. Nous prions chaque personne utilisant ces informations de respecter les droits et copyright des auteurs et éditeurs. Dans la plupart des cas, ces travaux ne peuvent être réexpédiés sans la permission explicite du détenteur des droits. Key words : Suburban watercourses, urban inputs, coarse sediments, hyporheic zone, Oligochaeta This paper has not been submitted elsewhere in identical or similar form, nor will it be during the first three months after its submission to Hydrobiologia. 2 AbstractThe Chaudanne stream received urban inputs discharged through combined sewer overflows (CSOs). The water quality was not severely impaired, with pollution mainly of organic origin.Oligochaete assemblages were studied in the coarse surface sediments and the hyporheic zone and sampled at 4 sites on 7 occasions during 2000 and 2001. The seasonal distribution of oligochaete assemblages was analyzed by a PCA, the oligochaete species being assigned to functional traits (FTrs). Site 1, located upstream of the CSOs, was characterized by FTrs 1 and 2 (species indicating permeability and those intolerant to water pollution). Below the CSOs, high densities of oligochaetes occurred in the benthic layer of sites 3 and 4, with a predominance of FTr3 (species with tolerance to water pollution). At site 4, FTr4 species (indicative of sludge conditions) constantly predominated in the hyporheic system, but predominated in the benthos only during low stream discharges associated with peaks in CSOs. FTr3 was related to amounts of the oxidized forms of nitrogen, high stream discharges and probably to groundwater upwellings and the sludge tolerant species group (FTr4) was associated with high NH 4 + contents. We are now testing the relevance and generalisation of this new approach.3

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Micro-distribution of oligochaetes in a soft-bottomed lowland stream (Elsbeek; The Netherlands)

Cited by 15 publications

References 18 publications

Oligochaeta (Annelida, Clitellata) of lotic environments at Parque Estadual Intervales (São Paulo, Brazil)

Oligochaeta (Annelida, Clitellata) of lotic environments at Parque Estadual Intervales (São Paulo, Brazil)

Beyond Masses and Blooms: The Indicative Value of Oligochaetes

Surface and Hyporheic Oligochaete Assemblages in a French Suburban Stream

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