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… Greater Canada Geese have also been reported to damage wetland habitats through over-grazing. They are … forces others away from their breeding grounds. Habitat damage Different forms of habitat damage are generally … and their presence prevents an accurate assessment of any environmental effects on the natural population. Feral …

… should be collected at a suspected outbreak, including: � Environmental factors � Estimation of disease onset � Species … abiotic diseases: those that are caused by non- living, environmental agents, such as, toxic chemicals, heavy metals, … and invasive alien species It has been estimated that damage caused by invasive alien species worldwide amounts to …