Alois Herzig - Academia.edu (original) (raw)
Papers by Alois Herzig
Bruno B?rzi?s, in memoriam, 1909-1985.- One: Taxonomy and Biogeography.- Keratella cochlearis (Go... more Bruno B?rzi?s, in memoriam, 1909-1985.- One: Taxonomy and Biogeography.- Keratella cochlearis (Gosse) in Africa.- Distribution of rotifers in African fresh and inland saline waters.- On species of the genus Lepadella (Eurotatoria: Monogononta: Colurellidae) from North-Eastern India, with remarks on Indian taxa.- The Rotifera of impoundments in Southeastern Australia.- Tasmanian Rotifera: Affinities with the Australian fauna.- Intraspecific variability of Brachionus plicatilis.- Rotifera from Northwestern Canada.- Coexistence of rotifer (Brachionus plicatilis) clones in Soda Lake, Nevada.- Rotifers from Turkey.- Distribution of Brachionus species in Spanish mediterranean wetlands.- Biometric variation in three strains of Brachionus plicatilis as a direct response to abiotic variables.- Taxonomical and ecological notes on Hexarthra bulgarica from high mountain lakes and ponds of Sierra Nevada, Spain.- Rotifer fauna of lakes and ponds over 2500 m above sea level in the Sierra Nevada, Spain, with description of a new subspecies.- Rotifer fauna in the periphyton of Karst rivers in Croatia, Yugoslavia.- Rotifer occurrence in relation to pH.- Two: Bdelloids.- Ecology of Bdelloids: How to be successful.- A bdelloid rotifer living as an inquiline in the leaves of the pitcher plant. Sarracenia purpurea.- Specificity of the alpha-tocopherol (vitamin E) effect on the lifespan and fecundity of Bdelloid rotifers.- Three: Colonial Rotifers.- Coloniality in the phylum Rotifera.- Conochilus in Lake Washington.- Four: Population Dynamics and Spatial Distribution.- The analysis of planktonic rotifer populations: a plea for long-term investigations.- The influence of sampling strategy on the apparent population dynamics of planktonic rotifers.- Abundance and distribution of pelagic rotifers in a cold, deep, oligotrophic alpine lake (Konigssee).- Population dynamics of hypolimnetic rotifers in the Pluss-see (north Germany).- Environmental factors influencing the vertical migration of planktonic rotifers in a hypereutrophic tarn.- Comparative population dynamics of the rotifers Brachionus angularis and Keratella cochlearis.- Changes in the population dynamics of Keratella cochlearis (Gosse), Kellicottia longispina (Gosse) and Polyarthra vulgaris (Carlin) in a fertilised enclosure.- The population dynamics of Keratella cochlearis in a hypereutrophic tarn and the possible impact of predation by young roach.- Post-encounter vulnerability of some rotifer prey types to predation by the copepod Acanthocyclops robustus.- The Polyarthra escape response: Defence against interference from Daphnia.- Rotifers, cladocerans and planktivorous fish: what are the major interactions?.- Five: Aquaculture, Feeding and Nutrition.- Raising rotifers for use in aquaculture.- Production and nutritional quality of the rotifer Brachionus plicatilis fed marine Chlorella sp. at different cell densities.- The use of marine yeast (Candida sp.) and bakers' yeast (Saccharomyces cerevisiae) in combination with Chlorella sp. for mass culture of the rotifer Brachionus plicatilis.- A consideration of why mass culture of the rotifer Brachionus plicatilis with bakers' yeast is unstable.- The components of feeding behavior in rotifers.- Effects of feeding on respiration of the rotifer Brachionus plicatilis.- A laboratory study of feeding and assimilation in Euchlanis dilatata lucksiana.- The potential for population growth of Ascomorpha ecaudis.- Further nutritional studies on the rotifer Encentrum linnhei.- Six: Reproduction.- Planktonic rotifers and temperature.- Effect of algal diet and temperature on the embryonic development time of the rotifer Brachionus plicatilis in culture.- Factors influencing the occurrence of males in natural populations of Synchaeta spp..- Fertilization and male fertility in the rotifer Brachionus plicatilis.- Effect of incubation temperature on the hatching of rotifer resting eggs collected from sediments.- Seven: Ultrastructure, Biochemistry and General Methodology.- Movement in rotifers: correlations of ultrastructure and behavior.- Ultrastructure and histochemistry of the stomach of Asplanchna sieboldi.- Neuropharmacology of rotifer feeding, oviposition and anesthesia.- Combined influences of particulate and dissolved factors in the toxicity of Microcystis aeruginosa (NRC-SS-17) to the rotifer Brachionus calyciflorus.- A centrifugation method for measuring the relative density (specific gravity) of planktonic rotifers (Rotifera), with values for the relative density of Polyarthra major (Burkhardt) and Keratella cochlearis (Gosse).
The EGU General Assembly, Apr 1, 2013
Springer eBooks, 1990
Data are presented on nutrient concentrations, phytoplankton biovolume development, zooplankton c... more Data are presented on nutrient concentrations, phytoplankton biovolume development, zooplankton composition and population dynamics, and fish from a deep, stratifying, alpine lake (Mondsee, Austria) during a three-year period between 1982 and 1984. Development of the phytoplankton is closely related to structuring events of the physico-chemical environment. Dissolved silicate and phosphorus concentrations are critical for the summer situation. During summer algal abundance is largely affected by grazing of zooplankton, but no clear-water phase was observed at the end of the spring peak of phytoplankton.
Verhandlungen, Sep 1, 2001
![Research paper thumbnail of The vertical distribution of zooplankton in the Goggausee (the influence of algae and Chaoborus flavicans) [Translation from: Carinthia II 166/186 373-385, 1976]](https://attachments.academia-assets.com/113717289/thumbnails/1.jpg)
](The Goggausee, a small, shallow, meromictic lake(700m long, 150m wide, max. depth=12m, mean depth... more The Goggausee, a small, shallow, meromictic lake(700m long, 150m wide, max. depth=12m, mean depth=6m), was the site of a week long study (19-26 May 1974) of the limnology department of the University of Vienna. The study comprised pollen analysis and palaeolimnological studies on the one hand, as well as a stock- taking of physiochemical factors, primary production, bacteria, zooplankton, zoo benthos and fish on the other. This paper studies the zooplankton of the lake. The Goggausee is a meromictic lake, with its anoxic deep water, that restricts the vertical distribution of most zooplankton. The aim of the study was to pursue the vertical distribution of the rotifers and Crustacea. Density of individuals, biomass, percentages of zooplankton together and crustaceans and rotifers as groups. Special consideration is given to the the Dipteran Chaoborus flavicans.
Verhandlungen, Jun 1, 1985
Microbial Ecology, Nov 4, 2010
ALTEX-Alternatives to Animal Experimentation, 2002
Microbial Ecology, Jul 6, 2007
This study gives an overview on the surveillance of microbial water quality in Neusiedler See. Fi... more This study gives an overview on the surveillance of microbial water quality in Neusiedler See. First, the historical aspect of the development of a monitoring programme is presented. Then a stochastic and geostatistical analysis of a large data set of water quality data (1992 bis 2013) of standard fecal indicator bacteria (SFIB), water quality and meteorological variables sampled at 26 sampling sites is given. For the whole investigation period open water and the EU-bathing sites met the bacteriological requirements. It also revealed hotspots of fecal pollution and these are exclusively related to sites with elevated anthropogenic activity. Background pollution from wildlife or diffuse agricultural run-off at more remote sites was comparatively low. The analysis also showed that variability in the incidence of SFIB was driven mainly by meteorological phenomena. Geostatistical analysis revealed that the current spatial sampling density was insufficient to cover SFIB variance over the...
This paper deals with nutrient dynamics at Lake Neusiedl, an issue that is inseparable from the i... more This paper deals with nutrient dynamics at Lake Neusiedl, an issue that is inseparable from the inputs and exchange processes of suspended matter. Older studies from the early 1980s are summarised, discussed and compared with new findings from an ongoing EU INTERREG project (REBEN). The article first deals with the suspended matter and nutrient loads in Lake Neusiedl via the largest tributary of the lake, the river Wulka. In a second section changes due to chemical processes during the passage of the river Wulka through the reed belt at Donnerskirchen are described. The long-term development of nutrients in the open lake are discussed in the third part of the paper, which closes with the description of the horizontal distribution of suspended matter and nutrients in the reed belt and conclusions about horizontal currents and exchange processes. The most important finding of the data analysis is the decline of the phosphorus load of the river Wulka in recent decades, a corresponding ...
Limnology and Oceanography, 1997
Österreichische Wasser- und Abfallwirtschaft, 2019
Journal of Great Lakes Research, 2021
Abstract Lake Neusiedl, the largest steppe lake in Europe, is particularly sensitive to climate v... more Abstract Lake Neusiedl, the largest steppe lake in Europe, is particularly sensitive to climate variations due to its extreme shallowness (zmax = 1.8 m) and low ratio of catchment to lake area (3.5 : 1). Changes in water budget, salinity and turbidity have key implications for the lake’s ecology and management. Here, we present a multi-proxy palaeolimnological reconstruction of the evolution of Lake Neusiedl since the end of its last complete desiccation (1865–1868), based on an undisturbed radiometrically dated core taken from the open water portion of the lake. Geochemical and biological (algal) proxies outline the succession of three major ecological stages since 1873 ± 16 yrs, with the first major changes appearing already in the 1930s as driven by climate related hydrological variability. Subfossil diatoms proved to be reliable for tracking long-term changes in the trophic conditions of Lake Neusiedl while diatom-inferred lake conductivity revealed to be unreliable due to a combination of lake environmental settings and the absence of a site-specific training set. Nonetheless, multivariate statistical analyses and comparisons with limnological data confirm a great potential of subfossil diatoms for revealing past ecological changes and tipping points of shallow lakes, as long as studies rely on a multi-proxy approach. In agreement with limnological surveys, the sediment record corroborates the high vulnerability of Lake Neusiedl, both in present and past times, towards climate-driven changes in water level and salinity, and allows the prediction, by analogy with the past, of future ecological changes in a context of global warming and increasing nutrient inputs from non-point sources.
The role of planktonie protozoa as major links in rnatter and energy fluxes within freshwater sys... more The role of planktonie protozoa as major links in rnatter and energy fluxes within freshwater systems has been deseribed by various studies in reeent years. Protozoa are known to be an important food souree for metazoa (WEISSE 1991, SANDERS & WICKHAM 1993) and effeetively transfer pieoplanktonie produetion to higher trophie 1eve1s (FENCHEL 1987, SHERR & SHERR 1987). They ean feed on autotrophie and heterotrophie pieoand nanoplankton (PORTER et al. 1985, SIMEK et al. 1995) and provide dissolved organie material as nutrients to baeteria. Different trophie levels ean even be influeneed simultaneous1y by ornnivorous feeding aetivities in eertain protozoan groups (PFISTER & ARNDT 1998). Some studies have addressed the influenee of different habitats on the pe1agie protozoan eommunities (BEAVER & CRISMAN 1989, PFISTER et al. 2002), but extreme inland waters, sueh as fluetuating saline environments (RUINEN 1938a, 1938b, RUINEN & BAASBECKING 1938, PFISTER et al. 2002) have so far been modes...
Bruno B?rzi?s, in memoriam, 1909-1985.- One: Taxonomy and Biogeography.- Keratella cochlearis (Go... more Bruno B?rzi?s, in memoriam, 1909-1985.- One: Taxonomy and Biogeography.- Keratella cochlearis (Gosse) in Africa.- Distribution of rotifers in African fresh and inland saline waters.- On species of the genus Lepadella (Eurotatoria: Monogononta: Colurellidae) from North-Eastern India, with remarks on Indian taxa.- The Rotifera of impoundments in Southeastern Australia.- Tasmanian Rotifera: Affinities with the Australian fauna.- Intraspecific variability of Brachionus plicatilis.- Rotifera from Northwestern Canada.- Coexistence of rotifer (Brachionus plicatilis) clones in Soda Lake, Nevada.- Rotifers from Turkey.- Distribution of Brachionus species in Spanish mediterranean wetlands.- Biometric variation in three strains of Brachionus plicatilis as a direct response to abiotic variables.- Taxonomical and ecological notes on Hexarthra bulgarica from high mountain lakes and ponds of Sierra Nevada, Spain.- Rotifer fauna of lakes and ponds over 2500 m above sea level in the Sierra Nevada, Spain, with description of a new subspecies.- Rotifer fauna in the periphyton of Karst rivers in Croatia, Yugoslavia.- Rotifer occurrence in relation to pH.- Two: Bdelloids.- Ecology of Bdelloids: How to be successful.- A bdelloid rotifer living as an inquiline in the leaves of the pitcher plant. Sarracenia purpurea.- Specificity of the alpha-tocopherol (vitamin E) effect on the lifespan and fecundity of Bdelloid rotifers.- Three: Colonial Rotifers.- Coloniality in the phylum Rotifera.- Conochilus in Lake Washington.- Four: Population Dynamics and Spatial Distribution.- The analysis of planktonic rotifer populations: a plea for long-term investigations.- The influence of sampling strategy on the apparent population dynamics of planktonic rotifers.- Abundance and distribution of pelagic rotifers in a cold, deep, oligotrophic alpine lake (Konigssee).- Population dynamics of hypolimnetic rotifers in the Pluss-see (north Germany).- Environmental factors influencing the vertical migration of planktonic rotifers in a hypereutrophic tarn.- Comparative population dynamics of the rotifers Brachionus angularis and Keratella cochlearis.- Changes in the population dynamics of Keratella cochlearis (Gosse), Kellicottia longispina (Gosse) and Polyarthra vulgaris (Carlin) in a fertilised enclosure.- The population dynamics of Keratella cochlearis in a hypereutrophic tarn and the possible impact of predation by young roach.- Post-encounter vulnerability of some rotifer prey types to predation by the copepod Acanthocyclops robustus.- The Polyarthra escape response: Defence against interference from Daphnia.- Rotifers, cladocerans and planktivorous fish: what are the major interactions?.- Five: Aquaculture, Feeding and Nutrition.- Raising rotifers for use in aquaculture.- Production and nutritional quality of the rotifer Brachionus plicatilis fed marine Chlorella sp. at different cell densities.- The use of marine yeast (Candida sp.) and bakers' yeast (Saccharomyces cerevisiae) in combination with Chlorella sp. for mass culture of the rotifer Brachionus plicatilis.- A consideration of why mass culture of the rotifer Brachionus plicatilis with bakers' yeast is unstable.- The components of feeding behavior in rotifers.- Effects of feeding on respiration of the rotifer Brachionus plicatilis.- A laboratory study of feeding and assimilation in Euchlanis dilatata lucksiana.- The potential for population growth of Ascomorpha ecaudis.- Further nutritional studies on the rotifer Encentrum linnhei.- Six: Reproduction.- Planktonic rotifers and temperature.- Effect of algal diet and temperature on the embryonic development time of the rotifer Brachionus plicatilis in culture.- Factors influencing the occurrence of males in natural populations of Synchaeta spp..- Fertilization and male fertility in the rotifer Brachionus plicatilis.- Effect of incubation temperature on the hatching of rotifer resting eggs collected from sediments.- Seven: Ultrastructure, Biochemistry and General Methodology.- Movement in rotifers: correlations of ultrastructure and behavior.- Ultrastructure and histochemistry of the stomach of Asplanchna sieboldi.- Neuropharmacology of rotifer feeding, oviposition and anesthesia.- Combined influences of particulate and dissolved factors in the toxicity of Microcystis aeruginosa (NRC-SS-17) to the rotifer Brachionus calyciflorus.- A centrifugation method for measuring the relative density (specific gravity) of planktonic rotifers (Rotifera), with values for the relative density of Polyarthra major (Burkhardt) and Keratella cochlearis (Gosse).
The EGU General Assembly, Apr 1, 2013
Springer eBooks, 1990
Data are presented on nutrient concentrations, phytoplankton biovolume development, zooplankton c... more Data are presented on nutrient concentrations, phytoplankton biovolume development, zooplankton composition and population dynamics, and fish from a deep, stratifying, alpine lake (Mondsee, Austria) during a three-year period between 1982 and 1984. Development of the phytoplankton is closely related to structuring events of the physico-chemical environment. Dissolved silicate and phosphorus concentrations are critical for the summer situation. During summer algal abundance is largely affected by grazing of zooplankton, but no clear-water phase was observed at the end of the spring peak of phytoplankton.
Verhandlungen, Sep 1, 2001
The Goggausee, a small, shallow, meromictic lake(700m long, 150m wide, max. depth=12m, mean depth... more The Goggausee, a small, shallow, meromictic lake(700m long, 150m wide, max. depth=12m, mean depth=6m), was the site of a week long study (19-26 May 1974) of the limnology department of the University of Vienna. The study comprised pollen analysis and palaeolimnological studies on the one hand, as well as a stock- taking of physiochemical factors, primary production, bacteria, zooplankton, zoo benthos and fish on the other. This paper studies the zooplankton of the lake. The Goggausee is a meromictic lake, with its anoxic deep water, that restricts the vertical distribution of most zooplankton. The aim of the study was to pursue the vertical distribution of the rotifers and Crustacea. Density of individuals, biomass, percentages of zooplankton together and crustaceans and rotifers as groups. Special consideration is given to the the Dipteran Chaoborus flavicans.
Verhandlungen, Jun 1, 1985
Microbial Ecology, Nov 4, 2010
ALTEX-Alternatives to Animal Experimentation, 2002
Microbial Ecology, Jul 6, 2007
This study gives an overview on the surveillance of microbial water quality in Neusiedler See. Fi... more This study gives an overview on the surveillance of microbial water quality in Neusiedler See. First, the historical aspect of the development of a monitoring programme is presented. Then a stochastic and geostatistical analysis of a large data set of water quality data (1992 bis 2013) of standard fecal indicator bacteria (SFIB), water quality and meteorological variables sampled at 26 sampling sites is given. For the whole investigation period open water and the EU-bathing sites met the bacteriological requirements. It also revealed hotspots of fecal pollution and these are exclusively related to sites with elevated anthropogenic activity. Background pollution from wildlife or diffuse agricultural run-off at more remote sites was comparatively low. The analysis also showed that variability in the incidence of SFIB was driven mainly by meteorological phenomena. Geostatistical analysis revealed that the current spatial sampling density was insufficient to cover SFIB variance over the...
This paper deals with nutrient dynamics at Lake Neusiedl, an issue that is inseparable from the i... more This paper deals with nutrient dynamics at Lake Neusiedl, an issue that is inseparable from the inputs and exchange processes of suspended matter. Older studies from the early 1980s are summarised, discussed and compared with new findings from an ongoing EU INTERREG project (REBEN). The article first deals with the suspended matter and nutrient loads in Lake Neusiedl via the largest tributary of the lake, the river Wulka. In a second section changes due to chemical processes during the passage of the river Wulka through the reed belt at Donnerskirchen are described. The long-term development of nutrients in the open lake are discussed in the third part of the paper, which closes with the description of the horizontal distribution of suspended matter and nutrients in the reed belt and conclusions about horizontal currents and exchange processes. The most important finding of the data analysis is the decline of the phosphorus load of the river Wulka in recent decades, a corresponding ...
Limnology and Oceanography, 1997
Österreichische Wasser- und Abfallwirtschaft, 2019
Journal of Great Lakes Research, 2021
Abstract Lake Neusiedl, the largest steppe lake in Europe, is particularly sensitive to climate v... more Abstract Lake Neusiedl, the largest steppe lake in Europe, is particularly sensitive to climate variations due to its extreme shallowness (zmax = 1.8 m) and low ratio of catchment to lake area (3.5 : 1). Changes in water budget, salinity and turbidity have key implications for the lake’s ecology and management. Here, we present a multi-proxy palaeolimnological reconstruction of the evolution of Lake Neusiedl since the end of its last complete desiccation (1865–1868), based on an undisturbed radiometrically dated core taken from the open water portion of the lake. Geochemical and biological (algal) proxies outline the succession of three major ecological stages since 1873 ± 16 yrs, with the first major changes appearing already in the 1930s as driven by climate related hydrological variability. Subfossil diatoms proved to be reliable for tracking long-term changes in the trophic conditions of Lake Neusiedl while diatom-inferred lake conductivity revealed to be unreliable due to a combination of lake environmental settings and the absence of a site-specific training set. Nonetheless, multivariate statistical analyses and comparisons with limnological data confirm a great potential of subfossil diatoms for revealing past ecological changes and tipping points of shallow lakes, as long as studies rely on a multi-proxy approach. In agreement with limnological surveys, the sediment record corroborates the high vulnerability of Lake Neusiedl, both in present and past times, towards climate-driven changes in water level and salinity, and allows the prediction, by analogy with the past, of future ecological changes in a context of global warming and increasing nutrient inputs from non-point sources.
The role of planktonie protozoa as major links in rnatter and energy fluxes within freshwater sys... more The role of planktonie protozoa as major links in rnatter and energy fluxes within freshwater systems has been deseribed by various studies in reeent years. Protozoa are known to be an important food souree for metazoa (WEISSE 1991, SANDERS & WICKHAM 1993) and effeetively transfer pieoplanktonie produetion to higher trophie 1eve1s (FENCHEL 1987, SHERR & SHERR 1987). They ean feed on autotrophie and heterotrophie pieoand nanoplankton (PORTER et al. 1985, SIMEK et al. 1995) and provide dissolved organie material as nutrients to baeteria. Different trophie levels ean even be influeneed simultaneous1y by ornnivorous feeding aetivities in eertain protozoan groups (PFISTER & ARNDT 1998). Some studies have addressed the influenee of different habitats on the pe1agie protozoan eommunities (BEAVER & CRISMAN 1989, PFISTER et al. 2002), but extreme inland waters, sueh as fluetuating saline environments (RUINEN 1938a, 1938b, RUINEN & BAASBECKING 1938, PFISTER et al. 2002) have so far been modes...