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… harvesting, or the creation of physical barriers • Chemical control, including chemical dosing, use of toxic baits, and application of …

… ocean salinity. ! ese factors directly alter physical and chemical conditions and contribute to changes in communities. … or control have been developed, including mechanical, chemical, biological, habitat management and a combination of … e.g. hand-picking of snails and hand-pulling of weeds • Chemical control, e.g. using toxic baits against vertebrates …

… and conversion. However, some effects, such as those from chemical pollutants, waste or excess nutrients, are more … surveys etc. Identification of the extent of exposure e.g. Chemical concentrations. Identification of the risk … Effective sanitation and hygiene can be achieved through engineering solutions (e.g. sewerage and wastewater treatment …

… ful in ecological terms because its leaf litter contains chemical exudates and prevents other species from growing. … assessment models are still fairly primitive, based on chemical models that do not always ac- count for processes of … is no discretion to refuse a permit (Fed- eral Genetic Engineering Act, implementing EC Di- rectives 90/219/EEC and …

… including by burning, cutting, lacerating, or applying chemical irritants, spikes, or screws into the horse’s legs. … to pain by a single blow or gunshot or an electrical, chemical or other means that is rapid and effective, before …