Sökning: "species sensitivity distribution SSD"

Hittade 2 uppsatser innehållade orden species sensitivity distribution SSD.

1. 1. Ecological risk assessment of pesticide use in rice farming in the Mekong Delta , Vietnam

   Magister-uppsats, Stockholms universitet/Institutionen för naturgeografi

   Författare :Bubaraye Ohiosimuan Dirikumo; [2023]
   Nyckelord :Pesticides; Ecological Risk Assessment ERA ; rice farming; Mekong Delta; PRIMET Model; Exposure Toxicity Ratio ETR ; species sensitivity distribution SSD ; predicted environmental concentrations PECs ;

   Sammanfattning : Pesticide use in rice farming is a common practice in the Mekong Delta and poses ecological risks to aquatic organisms, the environment, and human health. This study focused on the ecological risk assessment of pesticide use in rice farming using the PRIMET model as a decision support tool to evaluate the risks of pesticide exposure, ecotoxicity, and risk characterization, as well as employing the species sensitivity distribution (SSD) assessment model to calculate the potentially affected fraction (PAF) of species based on the computed predicted environmental concentrations (PECs) from PRIMET. LÄS MER

3. 2. Chemical Hazard Assessment under Uncertainty Evaluated by Robust Bayesian Evidence Synthesis

   Kandidat-uppsats, Lunds universitet/Matematisk statistik

   Författare :Yudiana Yang; [2017]
   Nyckelord :Mathematics and Statistics;

   Sammanfattning : Chemical hazard assessment is a procedure in chemical regulation to set which concentrations of chemical substances that are safe to an ecological system, i.e. where a majority of the species in the systems is not negatively affected by the substance. LÄS MER