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15 Result(s)

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  1. No Access

    Article

    Atomic force microscopy (AFM) application to diatom study: review and perspectives

    Atomic force microscopy (AFM) allows high image resolution, based on slight differences in surface height and on imaging transparent structures, thus, is an excellent type of microscopy for imaging nano-sized ...

    Ana T. Luís, Daša Hlúbiková, Véronique Vaché… in Journal of Applied Phycology (2017)

  2. No Access

    Article

    Are diatom diversity indices reliable monitoring metrics?

    A biological survey was carried out in 640 stations spread over the Loire-Bretagne National Network (France) between 1996 and 2000. Epilithic diatom inventories were obtained following standard methods. A tota...

    Saúl Blanco, Cristina Cejudo-Figueiras, Loïc Tudesque, Eloy Bécares… in Hydrobiologia (2012)

  3. Article

    Preface: Use of algae for monitoring rivers

    Luc Ector, Daša Hlúbiková, Lucien Hoffmann in Hydrobiologia (2012)

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  4. No Access

    Article

    Alpine freshwater ecosystems in a protected area: a source of diatom diversity

    The “All Taxa Biodiversity Inventories” (ATBIs) project coordinated by the European Distributed Institute of Taxonomy (EDIT) aims to achieve a baseline biodiversity assessment of flora and fauna in those regio...

    Elisa Falasco, Luc Ector, Elisabetta Ciaccio, Lucien Hoffmann… in Hydrobiologia (2012)

  5. No Access

    Article

    Ecological assessment of Portuguese reservoirs based on littoral epilithic diatoms

    The objective of this study was to evaluate whether biological methods based on epilithic littoral diatoms are a valuable complement to other biological elements for the assessment of the ecological potential ...

    Maria Helena Novais, Saúl Blanco, Cristina Delgado, Manuela Morais… in Hydrobiologia (2012)

  6. No Access

    Article

    Diatom teratological forms and environmental alterations: a review

    The foremost feature of a diatom is the species-specific ornamentation of the silicon cell wall, which is preserved and faithfully reproduced through the generations. If exposed to different kinds of stress du...

    Elisa Falasco, Francesca Bona, Guido Badino, Lucien Hoffmann, Luc Ector in Hydrobiologia (2009)

  7. No Access

    Article

    Spatio-temporal Patterns of Protozoan Communities in a Meso-eutrophic Reservoir (Esch-sur-Sûre, Luxembourg)

    The spatio-temporal distribution of the heterotrophic nanoflagellates (HNF) and ciliates was monitored in the reservoir of Esch-sur-Sûre during the year 1999. Three main periods of protozoan development were o...

    Véronique Jacquet, Nicole Lair, Lucien Hoffmann, Henry-Michel Cauchie in Hydrobiologia (2005)

  8. No Access

    Article

    A Top-down Approach for the Development of a Stream Typology Based on Abiotic Variables

    The management of aquatic ecosystems requires stream-type specific assessment systems, which enable the partition of natural spatial variability and consequently an optimisation of monitoring and assessment pr...

    Martial Ferréol, Alain Dohet, Henry-Michel Cauchie, Lucien Hoffmann in Hydrobiologia (2005)

  9. No Access

    Article

    Diverse Responses of Planktonic Crustaceans to Fish Predation by Shifts in Depth Selection and Size at Maturity

    We investigated the behaviour and life histories of large zooplankton in the Esch-sur-Sûre reservoir (Luxembourg). We found that the decrease in size at maturity, as well as diurnal refuge in deep waters, were...

    Isabelle Thys, Lucien Hoffmann in Hydrobiologia (2005)

  10. No Access

    Article

    Diatom Communities and Water Quality Assessment in Mountain Rivers of the Upper Segre Basin (La Cerdanya, Oriental Pyrenees)

    Epilithic diatoms of mountain rivers from the upper Segre catchment (Oriental Pyrenees) were studied in 1998, during three different seasons: March, July and September. Four rivers, the river Segre and its thr...

    Joan Gomà, Frédéric Rimet, Jaume Cambra, Lucien Hoffmann, Luc Ector in Hydrobiologia (2005)

  11. No Access

    Article

    Distribution of Hepatotoxic Cyanobacterial Blooms in Belgium and Luxembourg

    A survey of the distribution of cyanobacterial blooms in the southern part of Belgium, in Luxembourg as well as in bordering northeastern France was carried out for 4 years (1997, 1999–2001). In the 64 cyanoba...

    Raphaël Willame, Tomasz Jurczak, Jean-François Iffly, Tomas Kull… in Hydrobiologia (2005)

  12. No Access

    Article

    Response of diatom indices to simulated water quality improvements in a river

    Various diatom indices are routinely used in European countries to monitor water quality in waterways. In order to assess their sensitivities and their integration interval after a sudden and lasting environme...

    Frédéric Rimet, Henry-Michel Cauchie, Lucien Hoffmann… in Journal of Applied Phycology (2005)

  13. No Access

    Article

    In situ versus laboratory estimations of length–weight regression and growth rate of Daphnia magna (Branchiopoda, Anomopoda) from an aerated waste stabilization pond

    The present paper questions the adequacy of using length–weight regressions and growth rates calculated in the laboratory under constant physico-chemical and food conditions for the estimation of biomass and s...

    Henry-Michel Cauchie, Isabelle Thys, Lucien Hoffmann, Jean-Pierre Thomé in Hydrobiologia (2000)

  14. No Access

    Article

    4. Geographic distribution of freshwater blue-green algae

    The analysis of the currently available data for morphologically unambiguously defined freshwater blue-green algae indicates that besides (sub-)cosmopolitan species, taxa with a more restricted distribution al...

    Lucien Hoffmann in Hydrobiologia (1996)

  15. No Access

    Chapter

    Geographic distribution of freshwater blue-green algae

    The analysis of the currently available data for morphologically unambiguously defined freshwater blue-green algae indicates that besides (sub-)cosmopolitan species, taxa with a more restricted distribution al...

    Lucien Hoffmann in Biogeography of Freshwater Algae (1996)