| publications-311 |
PEER REVIEWED ARTICLE |
2010 |
Schmidt, Caroline |
Ecosystem functioning from a geomicrobiological perspective - a conceptual framework for biogeochemical iron cycling. |
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10.1071/en10040 |
Uncategorized |
Groundwater |
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Environmental context.Microbial ecosystems are characterised by the interplay of various microorganisms with their biotic and abiotic environment. Biogeochemical niches host adapted microbial communities that are in constant competition for substrates and nutrients. Their natural distribution, interactions and responses to fluctuating environmental conditions are often impossible to simulate in laboratory studies. Using biogeochemical iron redox cycling as an example, we suggest the application of a conceptual framework to improve our understanding of the principal functioning of (geo)microbial ecosystems. Abstract.Our knowledge on how microbial ecosystems function profits from the support of biogeochemical concepts which describe the cycling of elements through various geochemical gradients. Using the example of the iron cycle in freshwater sediments, we propose a theoretical framework that describes the dynamic interactions between chemical and microbial FeII oxidation and FeIII reduction, their spatial location and how they are affected by changing environmental conditions. This contribution emphasises the complexity ecological research faces when dealing with heterogeneous and dynamic natural systems. Our concept aims to provide further insights into how flows of energy and matter are controlled during microbial and chemical Fe redox transformations and how various key variables, such as substrate availability and competition as well as thermodynamic and kinetic parameters, affect flow directions. |
239252 |
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| publications-312 |
PEER REVIEWED ARTICLE |
2012 |
Kann, KF |
Extreme water relatedweather events and waterborne disease |
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10.1017/s0950268812001653 |
Uncategorized |
Groundwater |
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SUMMARYGlobal climate change is expected to affect the frequency, intensity and duration of extreme water-related weather events such as excessive precipitation, floods, and drought. We conducted a systematic review to examine waterborne outbreaks following such events and explored their distribution between the different types of extreme water-related weather events. Four medical and meteorological databases (Medline, Embase, GeoRef, PubMed) and a global electronic reporting system (ProMED) were searched, from 1910 to 2010. Eighty-seven waterborne outbreaks involving extreme water-related weather events were identified and included, alongside 235 ProMED reports. Heavy rainfall and flooding were the most common events preceding outbreaks associated with extreme weather and were reported in 55·2% and 52·9% of accounts, respectively. The most common pathogens reported in these outbreaks were Vibrio spp. (21·6%) and Leptospira spp. (12·7%). Outbreaks following extreme water-related weather events were often the result of contamination of the drinking-water supply (53·7%). Differences in reporting of outbreaks were seen between the scientific literature and ProMED. Extreme water-related weather events represent a risk to public health in both developed and developing countries, but impact will be disproportionate and likely to compound existing health disparities. |
243923 |
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| publications-313 |
PEER REVIEWED ARTICLE |
2012 |
Carratala, A |
A novel tool for specific detection and quantification of chicken/turkey parvoviruses to trace poultry faecal contamination in the environment |
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10.1128/aem.01283-12 |
Simulation & Modeling |
Groundwater |
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ABSTRACT Poultry farming may introduce pathogens into the environment and food chains. High concentrations of chicken/turkey parvoviruses were detected in chicken stools and slaughterhouse and downstream urban wastewaters by applying new PCR-based specific detection and quantification techniques. Our results confirm that chicken/turkey parvoviruses may be useful viral indicators of poultry fecal contamination. |
243923 |
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| publications-314 |
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2010 |
Ahti Lepisto |
Monitoring of spatial water quality in lakes by remote sensing and transect measurements |
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10.1080/14634981003796295 |
Data Management & Analytics |
River Basins |
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New tools, such as intensive measurements, together with advanced mathematical models, are increasingly needed in water management and environmental research. The new approaches are being developed at Pyhäjärvi, a large (155 km2) lake in southwest Finland. Pyhäjärvi is highly valuable in terms of water supply, fisheries and recreational use. The ecological state of Pyhäjärvi has been closely monitored for decades, particularly since eutrophication became a major concern in the late 1980s. Two relatively new research methods were used to assess the spatial water quality of Pyhäjärvi: (i) transect measurements from a moving boat; and (ii) remote sensing data based estimates. First, a flow-through method from a moving boat was successfully used to collect high resolution transect water quality data from the lake over six field campaigns. The method is relatively accurate but costly, and its use is mostly limited to special campaigns and intensive research, but not for long-term monitoring. Second, remote sensing methods were used to retrieve water quality information which was found consistent with the surface measurements from the boat. The estimation of parameters such as turbidity and humic substance concentration is possible with simple algorithms when using remote sensing (MERIS) data. The quantitative estimation of water quality by the methods used here requires concurrent in situ measurements for algorithm training. These methods will be further developed utilizing frequent on-line water quality and weather data from a recently installed lake float. |
244121 |
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| publications-315 |
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2010 |
J. Randall Etheridge |
Calibration of the INCA-N Model in the Pyhajoki and Ylaneenjoki Catchments in Finland. Paper Number:1008920 |
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10.13031/2013.29757 |
Data Management & Analytics |
Natural Water Bodies |
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No abstract available |
244121 |
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| publications-316 |
PEER REVIEWED ARTICLE |
2011 |
Carlos Iglesias |
High predation is of key importance for dominance of small-bodied zooplankton in warm shallow lakes: evidence from lakes, fish exclosures and surface sediments |
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10.1007/s10750-011-0645-0 |
Data Management & Analytics |
Groundwater |
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No abstract available |
244121 |
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| publications-317 |
PEER REVIEWED ARTICLE |
2011 |
Peeter Noges |
Increased nutrient loading and rapid changes in phytoplankton expected with climate change in stratified South European lakes: sensitivity of lakes with different trophic state and catchment properties |
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10.1007/s10750-011-0649-9 |
Uncategorized |
Natural Water Bodies |
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No abstract available |
244121 |
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| publications-318 |
PEER REVIEWED ARTICLE |
2011 |
Peeter Noges |
Morphometry and trophic state modify the thermal??response of lakes to meteorological forcing |
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10.1007/s10750-011-0691-7 |
Uncategorized |
Hydropower Dams & reservoirs |
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No abstract available |
244121 |
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| publications-319 |
PEER REVIEWED ARTICLE |
2011 |
Tiina Noges |
Reconstructed long-term time series of phytoplankton??primary production of a large shallow temperate lake:??the basis to assess the carbon balance and its climate??sensitivity |
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10.1007/s10750-011-0647-y |
Uncategorized |
Groundwater |
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No abstract available |
244121 |
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| publications-320 |
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Ahti Lepisto |
Increasing organic C and N fluxes from a northern boreal river basin to the sea. |
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Uncategorized |
River Basins |
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No abstract available |
244121 |
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