A physical, chemical, or biological entity that can induce adverse effects on ecosystems or human health.
A general term for any factor that increases a person's mental or physical stress.
a physical or psychological demand that induces physiological adjustment. (558)
Any biological, chemical, physical, psychological, or social factor that contributes to a complaint. (Gobbell, 1994, p. 70)
an agent (physical, chemical, emotional or psychological) which causes the physiological state known as stress
Internal or external factors or stimuli that produce stress. They can be physical, biological, environmental, or psychological; each can activate central stress circuits in an individual. For example, worry about the untimely and unpredictable onsets of uncontrollable abdominal pain or an uncontrollable bowel movement qualify as stressors sufficient to activate the central stress system.
an external demand the environment makes on the individual. Stressors in the workplace can include those embedded in our social relationships: a bullying supervisor, for example. They can also be present in the roles we occupy or because of factors such as noise, dust, or heat in the physical settings we work in.
Any chemical, physical, or biological entity that can induce adverse effects on individuals, populations, communities, or ecosystems and be a cause of beneficial use impairments. Examples of stressors include: pathogens, fragmentation, and destruction of terrestrial and aquatic habitats, exotic nuisance species, and uncontrolled runoff and erosion.
Any physical, chemical, or biological entity that can induce an adverse response. Only chemical and physical stressors are subject to risk management decisions at Superfund sites (EPA 1997).
any physical or psychological event or condition that produces stress