Construct · 3 fields · 3 citations
One name. Different field. Different construct. One map.
● jingle · one word, three constructs Nearest construct by meaningresiliencecompare the meaningsEvery construct on the map is compared with every other by the meaning of its definitions, and the closest one is surfaced here. The nearest construct to disturbance is resilience.
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In ecology a disturbance is a discrete event in time that disrupts an ecosystem, community, or population and frees space or resources that were previously held, such as a fire, a storm, a flood, or a fallen tree opening the forest canopy. Connell's 1978 Diversity in tropical rain forests and coral reefs argued that these communities are rarely at equilibrium and that an intermediate frequency of such events can hold the most species, an idea now called the intermediate disturbance hypothesis. Ecologists also speak of a disturbance regime, the characteristic pattern of these events across a landscape. The referent is an external event acting on living communities, often generative rather than merely harmful, and it is not an unwanted input to a machine, a clinical symptom, or a legal wrong.[1]
In control theory and engineering a disturbance is an unwanted external input that pushes a system away from the value its controller is trying to hold, such as a gust hitting an aircraft, a load dropped onto a motor, or heat leaking into a regulated oven. Han's 2009 From PID to active disturbance rejection control treated the combined effect of such inputs and unmodelled dynamics as a single quantity to be estimated and cancelled, making disturbance rejection an explicit design goal. Here the system, its target value, and the corrective feedback are all engineered on purpose. The referent is a perturbing signal to be measured and countered, not a resource-freeing event in nature, a disruption of a person's functioning, or an interference with a legal right.[2]
In law a disturbance is a wrong that interferes with another's exercise of a right, whether a public order offence such as disturbing the peace or, in the older common law, a private wrong against an incorporeal right. Blackstone's 1768 Commentaries on the Laws of England defined disturbance as a wrong done by hindering or disquieting the owner in the lawful enjoyment of an incorporeal right, and set out its species, including disturbance of common and of ways. The referent is a legally recognised interference with a protected interest, judged against a rule and giving rise to a remedy or a charge, and it has nothing in common with an ecological event, a control input, or a clinical symptom beyond the shared word.[3]
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