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Springs of the Alps – Sensitive Ecosystems to Environmental Change: From Biodiversity Assessments to Long-term Studies
The main aim of the present review is to synthesise the present level of knowledge on the hydrobiology of springs in the Alps and propose to use the zoobenthos, especially water mites, for an evaluation of the biological integrity of springs, whilst autotrophs, and in particular diatoms, can provide excellent indicators of eutrophication, acidification and ionic strength.
Crenic habitats, hotspots for freshwater biodiversity conservation: toward an understanding of their ecology
- M. Cantonati, L. Füreder, R. Gerecke, I. Jüttner, E. Cox
- Environmental ScienceFreshwater Science
- 15 May 2012
The authors of papers in this special issue describe specific spring biota, including multitaxon studies, and discuss the role of environmental factors, habitat variability at different spatial and temporal scales, and the importance of natural and anthropogenic disturbance in spring habitats.
DIATOM COMMUNITIES OF SPRINGS IN THE SOUTHERN ALPS
- M. Cantonati
- Environmental Science, Geography
- 1 November 1998
Diatom taxa numbers were similar to those found for mountain streams with the lowest values found for stones in carbonate springs; nevertheless the community structure of epilithic and epiphytic samples was found to be similar and more or less constant over the seasons.
The role of environmental variables in structuring epiphytic and epilithic diatom assemblages in springs and streams of the Dolomiti Bellunesi National Park (south-eastern Alps).
The important role of springs as valuable habitats for the conservation of aquatic biodiversity is highlighted, as the environmental factors most influential in structuring diatom assemblages were substrate particle size, permanence of flow, shade, nitrates, and total phosphorus.
Effects of water-level fluctuations on lakes: an annotated bibliography
Overall, the number of papers published on the subject since the 1990s has risen steadily, when less than ten papers were published each year; until 2006 and peaking in 2005; and the effects of WLF have not been studied equally for different groups of organisms.
Ecological effects of water-level fluctuations in lakes: an urgent issue
- K. Wantzen, K. Rothhaupt, M. Mörtl, M. Cantonati, L. G.-Tóth, P. Fischer
- Environmental ScienceHydrobiologia
- 10 August 2008
Water-level fluctuations (WLF) affect the ecological processes and patterns of lakes in several ways. Aquatic habitats and feeding or breeding grounds are gained or lost, as light, climate and wave…
Diatoms in springs of the Alps: spring types, environmental determinants, and substratum
- M. Cantonati, N. Angeli, E. Bertuzzi, D. Spitale, H. LANGE-BERTALOT
- Environmental ScienceFreshwater Science
- 1 April 2012
Diatoms were sampled from stones and bryophytes in 110 nonthermal, near-natural springs in the southeastern Alps and in the Dolomiti Bellunesi National Park, finding that Bryophytes are quick and easy to sample and are proposed as the target substratum for diatom-based assessments of springs.
Benthic Algae in High Altitude Streams of the Alps – a Neglected Component of the Aquatic Biota
Results from literature and the author’s experiences from these and other mountain stream types are synthesized to formulate major objectives for future research in benthic high altitude Alpine stream ecology.
Neidiomorpha gen. nov. (Bacillariophyta): A new freshwater diatom genus separated from Neidium Pfitzer
Comparative morphological and ultrastructural analyses of numerous taxa within the established diatom genus Neidium Pfitzer led to the conclusion that N. binodiforme Krammer and N.binodis (Ehrenberg) Hustedt can be identified as striking exceptions and would be more coherently allocated in a new freshwater benthic datom genus, Neidiomorpha gen. nov.
Environmental controls of epilithic diatom depth-distribution in an oligotrophic lake characterized by marked water-level fluctuations
The results indicate that depth-distribution patterns should be considered when performing lake diatom biodiversity inventories and integrity evaluations because water-level fluctuations are likely to increase in many lakes due to increased withdrawal of water and climate change in the future.