A5044827270- Microbial Community Ecology and Physiology
- Mosquito-borne diseases and control
- Marine and coastal ecosystems
- Geology and Paleoclimatology Research
- Malaria Research and Control
- Peatlands and Wetlands Ecology
- Botulinum Toxin and Related Neurological Disorders
- Wastewater Treatment and Nitrogen Removal
- Vector-borne infectious diseases
- Viral Infections and Vectors
- Aquatic Ecosystems and Phytoplankton Dynamics
- Botany and Plant Ecology Studies
- Viral Infections and Immunology Research
- Species Distribution and Climate Change
- Fecal contamination and water quality
- Protist diversity and phylogeny
- Electromagnetic Fields and Biological Effects
- Parasitic Diseases Research and Treatment
- Marine and environmental studies
- Fish Ecology and Management Studies
- Avian ecology and behavior
- Water Treatment and Disinfection
- Animal Behavior and Reproduction
- Dengue and Mosquito Control Research
- Environmental Justice and Health Disparities
Biologische Station Neusiedler See
2018-2025
Government of Lower Austria
2021
University of Veterinary Medicine Vienna
2001-2005
University of Vienna
1998-2005
Abstract Calcium (Ca) is an essential element for almost all living organisms. Here, we examined global variation and controls of freshwater Ca concentrations, using 440 599 water samples from 43 184 inland sites in 57 countries. We found that the median concentration was 4.0 mg L −1 with 20.7% showing concentrations ≤ 1.5 , a threshold considered critical survival many Ca-demanding Spatially, were strongly proportionally linked to carbonate alkalinity, highest alkalinity waters pH around...
Culex pipiens complex taxa differ in behaviour, ecophysiology and epidemiologic importance. Despite their significance, information on genetic diversity, occurrence seasonal spatial distribution patterns of the Cx. is still insufficient. Assessment forms congener torrentium crucial for understanding vector–pathogen dynamics. Female mosquitoes were trapped from April–October 2014 twice a month 24-h time period with BG-sentinel traps at 24 sampling sites eastern Austria, using carbon dioxide...
Nitrite-oxidizing bacteria of the genus Nitrospira are key players biogeochemical nitrogen cycle. However, little is known about their occurrence and survival strategies in extreme pH environments. Here, we report on discovery physiologically versatile, haloalkalitolerant that drive nitrite oxidation at exceptionally high pH. distribution, diversity, ecophysiology were studied hypo- subsaline (1.3-12.8 g salt/l), highly alkaline (pH 8.9-10.3) lakes by amplicon sequencing, metagenomics,...
Angiostrongylus chabaudi (arrows) on the endothelium of right ventricle a wildcat in Northern Greece
In consideration of current global climate change, ecophysiological research on wild birds has increased its emphasis approaches related to thermal tolerance. Many studies have investigated how desert specialists are adapted physiologically the hot and xeric conditions they live in. Our aim was test whether migratory passerines from temperate areas also physiological adaptations cope with heat stress such may be habitat or migration distance. Using video recording flow‐through respirometry,...
<title>Abstract</title> Saline lakes are hypersensitive to changes in their water balance and therefore show amplified responses climatic land-use catchment. However, despite the resulting, often dramatic ecological consequences, saline rank low on policy agendas as they assumed support few ecosystem services levels of biodiversity. Here, we challenge this view evaluate threatened species 84 distributed across globe. We found that harbour not only aquatic biota but also a diverse range...
Niche partitioning is a crucial mechanism explaining species coexistence and biodiversity; however, the role of individual variation less understood. As global changes reshuffle communities, understanding mechanisms vital. In this study, we use two co-occurring, morphologically similar bat species, Nathusius' pipistrelle (Pipistrellus nathusii) range-expanding Kuhl's (P. kuhlii), as models. We examine their niche across habitats time, considering variations by analysing spatio-temporal...
Vector-pathogen dynamics are controlled by fluctuations of potential vector communities, such as the Culicidae. Assessment mosquito community diversity and, in particular, identification environmental parameters shaping these communities is therefore key importance for design adequate surveillance approaches. In this study, we assess effects climatic and habitat structure on eastern Austria to deliver highly relevant baseline data. Female mosquitoes were sampled twice a month from April...
ABSTRACT Insect migrations are spectacular natural events and resemble a remarkable relocation of biomass between two locations in space. Unlike the well-known daytime flying butterflies, such as painted lady (Vanessa cardui) or monarch butterfly (Danaus plexippus), much less widely known nocturnal moths. These – typically involving billions moths from different taxa have recently attracted considerable scientific attention. Nocturnal moth traditionally been investigated by light trapping...
ABSTRACT Wild birds are an important nonpoint source of fecal contamination surface waters, but their contribution to pollution is mostly difficult estimate. Thus, evaluate the relation between feces production and input indicator bacteria (FIB) into aquatic environments by wild waterfowl, we introduced a new holistic approach for evaluating performance FIB in six shallow saline habitats. For this, monitored bird abundance, pellet production, abundance concomitantly with set environmental...
Insect vectors, namely mosquitoes (Diptera: Culicidae), are compulsory for malaria parasites (Plasmodium spp.) to complete their life cycle. Despite this, little is known about vector competence of different mosquito species the transmission avian parasites.In this study, nested PCR was used determine Plasmodium spp. occurrence in pools whole individuals, as well diversity mitochondrial cytochrome b gene sequences wild-caught sampled across Eastern Austria 2013-2015.A total 45,749 2628 were...
Trypanosomatid flagellates have not been studied in Austria any detail. In this study, specific nested PCR, targeted on the ribosomal small subunit, was used to determine occurrence and diversity of trypanosomatids wild-caught mosquitoes sampled across Eastern years 2014−2015. We collected a total 29,975 19 species divided 1680 pools. Of these, 298 (17.7%), representing 12 different mosquito species, were positive for trypanosomatid DNA. total, seven spp. identified (three Trypanosoma, three...
Nitrite-oxidizing bacteria (NOB) catalyse the second nitrification step and are main biological source of nitrate. The most diverse widespread NOB genus is Nitrospira, which also contains complete ammonia oxidizers (comammox) that oxidize to To date, little known about occurrence biology comammox canonical nitrite oxidizing Nitrospira in extremely alkaline environments. Here, we studied seasonal distribution diversity, effect short-term pH changes on sediments two saline, highly lakes. We...
The relationship between the rate of beta-D-glucuronidase hydrolysis (GLUase-HR) and E. coli concentration in rivers differing extent faecal pollution was investigated. It hypothesized that GLUase-HR is a better surrogate parameter for concentrations than estimated numbers coliforms (FC).The water sample filter residues determined as cleavage 4-methylumbelliferyl-beta-D-glucuronide. FC were enumerated using mFC Chromocult Coliform agar, respectively. Regression analysis revealed 90%...
Uranotaenia unguiculata Edwards, 1913 is a species of mosquito (Diptera: Culicidae) native to central Europe. Recently novel lineage the West Nile virus (WNV-lineage 4c) was identified in pools adult female Ur. unguiculata. To increase body knowledge about this species, various trapping methods were evaluated determine most efficient method for capturing unguiculata.Sound traps collected equivalent numbers as low-hanging light-baited downdraft traps. Hosts Pelophylax lessonae and P....
Migratory birds are able to navigate over great distances with remarkable accuracy. The mechanism they use achieve this feat is thought involve two distinct steps: locating their position (the ‘map’) and heading towards the direction determined ‘compass’). For decades, map-and-compass concept has shaped our perception of navigation in animals, although nature map remains debated. However, some recent studies suggest involvement Earth’s magnetic field step. Here, we tested whether migratory...
A fragment of the low density lipoprotein receptor encompassing seven ligand binding repeats was expressed in Sf9 insect cells as a fusion protein with carboxyl-terminally linked hexa-his tag by using baculovirus vector. Up to 10 mg/l secreted into medium. The material soluble absence detergent and active β very member minor group human rhinoviruses (HRV2) blots from sodium dodecyl sulfate-polyacrylamide gels run under nonreducing conditions. specifically inhibits viral infection HeLa HRVs...
Information on mosquito-borne filarioid helminths in Austria is scarce, but recent discoveries of Dirofilaria repens indicate autochthonous distribution this parasite Eastern Austria. In the current xenomonitoring study, more than 48,000 mosquitoes were collected between 2013 and 2015, using different sampling techniques storage conditions, analysed pools with molecular tools for presence helminth DNA. Overall, DNA D. repens, Setaria tundra, two unknown documented twenty mosquito within...
Summary Diel changes in bacterial and cyanobacterial numbers, as well heterotrophic production, were examined two shallow alkaline pools, harbouring dense populations of cyanobacteria (up to 1100 × 10 9 cells l −1 ) bacteria 500 ). Together with the recorded production rates (925 µgC h ), these values are highest reported for natural aquatic ecosystems. The investigations performed during a fair‐weather situation, rapid change after long‐term situation thunderstorms heavy rainfall. During...
Lake Neusiedl, the largest steppe lake in Europe, is particularly sensitive to climate variations due its extreme shallowness (zmax = 1.8 m) and low ratio of catchment area (3.5 : 1). Changes water budget, salinity turbidity have key implications for lake's ecology management. Here, we present a multi-proxy palaeolimnological reconstruction evolution Neusiedl since end last complete desiccation (1865–1868), based on an undisturbed radiometrically dated core taken from open portion lake....
In Austria, only fragmented information on the occurrence of alien and potentially invasive mosquito species exists. The aim this study is a nationwide overview situation those mosquitoes in Austria. Using uniform protocol for first time, eggs were sampled with ovitraps at 45 locations Austria weekly intervals from May to October 2020. counted identified by genetic analysis. Asian tiger Aedes albopictus was found two sites, once Tyrol, where has been reported before, time province Lower...