Search results for "Ecotoxicity tests"

showing 2 items of 2 documents

Acute toxicity tests using earthworms to estimate ecological quality of compost and digestate

2017

Ecological quality of compost and digestate, used as fertilizers for agricultural use, was assessed through an acute ecotoxicological bioassay testing the earthworm Eisenia fetida (Annelida). The test evaluates the earthworm’s attitude to dig within 15 min into a soil medium constituted by a mixture of a standardized soil and different concentrations of compost/digestate. According to different classes of behavior responses, the sample is classified as good or bad quality (ON/OFF). The validity of this test was confirmed comparing the observations with the results from a standard chronic test developed by OECD (Organisation for Economic Co-operation and Development). Considering samples fro…

Eisenia fetida020209 energySoil biologyEcotoxicity testsSettore BIO/05 - ZoologiaDigestate02 engineering and technology010501 environmental sciencesengineering.material01 natural sciencesFertilizer0202 electrical engineering electronic engineering information engineeringBioassayWormsAgriculture application; Compost; Digestate; Ecotoxicity tests; Fertilizer; Worms; Waste Management and Disposal; Mechanics of MaterialsWaste Management and Disposal0105 earth and related environmental sciencesDigestate Compost Ecotoxicity tests Worms Fertilizer Agriculture applicationSettore ICAR/03 - Ingegneria Sanitaria-AmbientalebiologyCompostEcologybusiness.industryEarthwormAgriculture applicationCompostbiology.organism_classificationSettore AGR/11 - Entomologia Generale E ApplicataMechanics of MaterialsDigestateengineeringEnvironmental scienceFertilizerbusinessQuality assuranceAgriculture application; Compost; Digestate; Ecotoxicity tests; Fertilizer; Worms
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Sediment quality of the ecoregion Engure, Gulf of Riga, assessed by using ecotoxicity tests and biomarker responses

2014

Pētījuma mērķis bija novērtēt Engures ekoreģiona (Rīgas līča rietumu piekrastes) sedimentu kvalitāti, izmantojot sedimentu ekotoksicitātes testus. Lai noteiktu bioloģiskās atbildes reakcijas uz dažāda veida stresoriem, kā testorganismi pielietotas sānpeldes Monoporeia affinis and Pontogammarus robustoides, un izvēlēti biomarķieri (AChE, GST, GR, CAT, MT), kas noteikti gliemenēs Macoma balthica. Engures ekoreģionu varētu uzskatīt par nepiesārņotu rajonu, jo tā sedimentus raksturo salīdzinoši zemas smago metālu koncentrācijas. Engures ekoreģiona sedimentu ekotoksicitātes testu rezultāti neuzrādīja statistiski būtisku (>20% mirstība) toksisko efektu. Testorganismu izdzīvotība bija robežās no 8…

molluscsecotoxicity testsgeographyMultidisciplinarygeography.geographical_feature_categoryEcologyScienceGulf of RigaamphipodsQbiomarkersSedimentSink (geography):NATURAL SCIENCES::Biology [Research Subject Categories]NutrientEcoregionEnvironmental scienceMarine ecosystemEcosystemgulf of rigaEcotoxicityOrganismProceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.
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