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… livestock and humans. � An introduction to taking an ecosystem approach to health. � Why disease should be an … stressors (e.g. hypoxia, pollutants) can make organisms vulnerable to other secondary stressors (e.g. malnutrition, … of habitat by human encroachment can result in vulnerable isolated wildlife populations in human-made …

… wetlands and human health interactions, emphasized that ecosystem services provided by wetlands form the basis of a … Lake, China, in May 2005. • Some species appear to be more vulnerable to infection, such as swans, ducks and grebes. • … habitat characteristics, human use); 3) Occurrence of vulnerable bird species (status, numbers and seasonal …