-
Article
Long-term Persistence of Stream Nitrate Concentrations (Memory Effect) Inferred from Spectral Analysis and Detrended Fluctuation Analysis
Previous research in agricultural catchments showed that past inputs of nitrate continue to influence present observations and future characteristics of nitrate concentrations in stream water for a long period...
-
Article
Concentrations of dissolved herbicides and pharmaceuticals in a small river in Luxembourg
Urban and agricultural areas affect the hydraulic patterns as well as the water quality of receiving drainage systems, especially of catchments smaller than 50 km2. Urban runoff is prone to contamination due to p...
-
Article
Two-year monitoring of Cryptosporidium parvum and Giardia lamblia occurrence in a recreational and drinking water reservoir using standard microscopic and molecular biology techniques
Starting in 2006, a monitoring of Giardia lamblia and Cryptosporidium parvum occurrence was conducted for 2 years in the largest drinking water reservoir of Luxembourg (Esch-sur-Sûre reservoir) using microscopy a...
-
Article
Carbohydrate metabolism and cell protection mechanisms differentiate drought tolerance and sensitivity in advanced potato clones (Solanum tuberosum L.)
In potatoes and many other crops, drought is one of the most important environmental constraints leading to yield loss. Development of drought-tolerant cultivars is therefore required for maintaining yields un...
-
Article
A note on the insecticide sensitivity status of Meligethes species (Coleoptera: Nitidulidae) in Luxembourg
Adult pollen beetles, Meligethes spp. (Coleoptera: Nitidulidae), were sampled from 27 and 35 oilseed rape (Brassica napus subsp. oleifera) fields scattered over Luxembourg in 2008 and 2009, respectively. Ten well...
-
Article
Evidence for natural resistance towards trifloxystrobin in Fusarium graminearum
A collection of 55 Fusarium graminearum (Gibberella zeae) strains isolated between 1969 and 2009 in Belgium, Canada, Germany, Italy, Luxembourg, or the USA belonging to the three known chemotypes (3-acetylated de...
-
Article
A rapid spectral-reflectance-based fingerprinting approach for documenting suspended sediment sources during storm runoff events
This paper reports on the development of a rapid and simple spectra-reflectance-based fingerprinting approach for documenting suspended sediment sources during storm runoff events. The methodology was applied ...
-
Article
Monitoring gene expression of potato under salinity using cDNA microarrays
The molecular response to salt exposure was studied in the leaves of a Solanum tuberosum clone using cDNA microarray. Differentially expressed genes were classified according to their known or predicted function ...
-
Article
Behaviour and Fluxes of Dissolved Antibiotics, Analgesics and Hormones During Flood Events in a Small Heterogeneous Catchment in the Grand Duchy of Luxembourg
The objective of this investigation is to analyse the variations of xenobiotic concentrations and the fluxes of dissolved xenobiotics during runoff events in the small rural Mess catchment (35 km2) in the Southwe...
-
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...
-
Article
Ecophysiological responses of nine floodplain meadow species to changing hydrological conditions
Here, we investigated how species from different floodplain meadow plant communities differ in their ecophysiological responses to an abrupt change in hydrological conditions. We simulated two contrasting hydr...
-
Article
Dynamic NanoSIMS ion imaging of unicellular freshwater algae exposed to copper
This work demonstrates the capabilities of nanoscale secondary-ion mass spectrometry, using the Cameca NanoSIMS50 ion microprobe, to detect and image the copper-ion distribution in microalgal cells exposed to ...
-
Chapter
Ecophysiological responses of nine floodplain meadow species to changing hydrological conditions
Here, we investigated how species from different floodplain meadow plant communities differ in their ecophysiological responses to an abrupt change in hydrological conditions. We simulated two contrasting hydr...
-
Article
The Importance of Precedent Hydro-climatological Conditions for the Mass Transfer of Pollutants in Separated Sewer Systems and Corresponding Tributaries During Storm Events
Runoff events were analysed in separated sewer systems in the town of Luxembourg. The relationships between Event Mean Concentrations of different pollutants and runoff patterns were evaluated. In addition, th...
-
Article
Facing Hazardous Matter in Atmospheric Particles with NanoSIMS (2 pp)
Current scientific studies and evaluations clearly show that an increase of urban dust loads, alone or combined with other pollutants und certain meteorological conditions lead to different significant healt...
-
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...
-
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...
-
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...
-
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...
-
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...
