-
Article
Algae of terrestrial habitats
The paper summarizes the present knowledge on the most important terrestrial habitats for algae and deals with soil, lithophytic, cave, snow and ice, epiphytic, and epizooic algae. For each habitat the physica...
-
Chapter
Cyanidium-like algae from caves
Cyanidium Geitler and the related genera Cyanidioschyzon De Luca, Taddei & Varano and Galdieria Merola are typical representatives of hot, acidic ecosystems; a large amount of data concerning the...
-
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...
-
Article
Soil algae from acid rain impacted forest areas of the Krušné hory Mts. 1. Algal communities
The soil algal communities of forested and reforested, limed and unlimed plots were compared in the acid rain impacted Kru sné hory Mountains. The floristic composition of unlimed plots is similar to that fou...
-
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...
-
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...
-
Article
Recent Trends in Rainfall-Runoff Characteristics in the Alzette River Basin, Luxembourg
The effects of rainfall structure and atmosphericcirculation variability on streamflow in the AlzetteRiver basin (Grand Duchy of Luxembourg, Europe) wereinvestigated. Evidence is presented regarding the local-...
-
Chapter
Phylum BX. Cyanobacteria
The oxygenic photosynthetic procaryotes comprise a single taxonomic and phylogenetic group (see master phylogenetic tree of the Bacteria). In the last edition of the Manual, two separate groups were described, bu...
-
Article
Spatial Variability of Trends in the Rainfall-Runoff Relationship: A Mesoscale Study in the Mosel Basin
The spatial variability of observed trends in rainfall structure over the last 5 decades and its effects on the spatial variability of maximum daily water levels in the Grand-Duchy of Luxembourg (Europe) were ...
-
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...
-
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...
-
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
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
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
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...
