Sökning: "aquatic toxicity"

Visar resultat 6 - 10 av 58 avhandlingar innehållade orden aquatic toxicity.

1. 6. Effects of wood ash on freshwater organisms and aquatic forest ecosystems

   Författare :K. Andreas Aronsson; Nils Ekelund; Thomas Palo; Olli-Pekka Penttinen; Mittuniversitetet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Wood ash; Euglena gracilis; Gammarus pulex; Fontinalis antipyretica; pH; alkalinity; toxicity; nutrients; first order stream; Askåterföring; Vedaska; Akvatiska näringssystem; Mineralnäring; Biology; Biologi;

   Sammanfattning : Wood ash application (WAA) has been recommended mainly for two reasons; i) to avoid depletion of minerals in the soil due to whole tree harvest in the forestry and ii) to mitigate harmful effects of acidification of soil and surface waters. In conclusion, the effects on terrestrial ecosystems and, especially, tree growth, can be attributed to the properties of the ash, the dose applied and the specific site at which the ash is applied. LÄS MER

3. 7. Semipermeable membrane devices in monitoring of organic pollutants in the aquatic environment

   Författare :Darius Sabaliunas; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; effect studies; environmental monitoring; organic pollutants; bioconcentration; passive samplers; Semipermeable membrane devices; SPMDs; toxicity; genotoxicity; bioassays; Ecology; Ekologi;

   Sammanfattning : Semipermeable membrane devices (SPMDs) are passive samplers capable of concentrating hydrophobic chemicals from water, sediments, soil and air. They consist of layflat polymeric membrane such as polyethylene containing a thin film of synthetic lipid such as triolein. LÄS MER

4. 8. Characterization, toxicity and treatment of wood leachate generated outdoors by the wood-based industry

   Författare :Henric Svensson; Linnéuniversitetet; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Wood leachate; Log yard runoff; Stormwater; Toxicity; Artemia salina; Vibrio fischeri; Constructed wetlands; Forestry and Wood Technology; Skog och träteknik;

   Sammanfattning : Wood is a natural raw material, and would hardly be considered a risk to the environment. However, the handling of wood materials on an industrial scale has been shown to have a negative impact on water bodies that run-off from industrial sites that process wood-based materials. LÄS MER

5. 9. Transcriptional biomarkers of toxicity – powerful tools or random noise? : An applied perspective from studies on bivalves

   Författare :Gustaf Magnus Oskar Ekelund Ugge; Olof Berglund; Annie Jonsson; Helena Westerdahl; Mikael Ejdebäck; Bruno Nunes; Högskolan i Skövde; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Biomarkers; Bivalves; Bivalvia; Ecotoxicology; Environmental toxicology; Environmental risk assessment; RT-qPCR; qPCR; Quantitative PCR; Systematic review; Meta-analysis; Dose-response relationships; Concentration-response relationships; Heavy metals; Metals; General toxicity; Copper; Duck mussel; Anodonta anatina; Freshwater; Gene transcription; Biomarkörer; Musslor; Bivalvia; Ekotoxikologi; Miljötoxikologi; Miljöriskbedömning; RT-qPCR; qPCR; Kvantitativ PCR; Systematic review; Metaanalys; Dos-responssamband; Koncentration-responssamband; Tungmetaller; Metaller; Allmän toxicitet; Koppar; Allmän dammussla; Anodonta anatina; Sötvatten; Gentranskription; Ekologisk modellering; Ecological Modelling Group; Biomarkörer; Musslor; Bivalvia; Ekotoxikologi; Miljötoxikologi; Miljöriskbedömning; RT-qPCR; qPCR; Kvantitativ PCR; Systematic review; Metaanalys; Dos-responssamband; Koncentration-responssamband; Tungmetaller; Metaller; Allmän toxicitet; Koppar; Allmän dammussla; Anodonta anatina; Sötvaten; Gentranskription; Biomarkers; Bivalves; Ecotoxicology; Environmental toxicology; Environmental risk assessment; Quantitative PCR; Meta-analysis; Dose-response relationships; Concentration-response relationships; Heavy metals; Metals; General toxicity; Copper; Duck mussel; Freshwater; Gene transcription;

   Sammanfattning : Aquatic organisms are constantly at risk of being exposed to potentially harmful chemical compounds of natural or anthropogenic origin. Biological life can for instance respond to chemical stressors by changes in gene expression, and thus, certain gene transcripts can potentially function as biomarkers, i.e. LÄS MER

7. 10. Metals take flight : Transport and effects across ecosystems

   Författare :Johan Lidman; A. M. M. Berglund; Micael Jonsson; Christian Bigler; Brendan Mckie; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Metals; aquatic subsidies; passerines; aquatic insects; environmental science; miljövetenskap; ekotoxikologi; Ecotoxicology;

   Sammanfattning : Metal contamination can have severe toxic effects in the ecosystems, resulting in loss of biodiversity, reduced abundance of organisms, and loss of ecosystem services. Traditionally, aquatic ecosystems have been regarded as a sink of metal contamination. LÄS MER