Table of Contents
Why is historic range of variability important?
It is this variability that ensures continued health, self- organization, and resilience of ecosystems and landscapes across spatio-temporal scales (Holling, 1992). Understanding the causes and consequences of this variability is key to managing landscapes that sustain ecosystems and the services they offer to society.
What is Historical variations?
Definition of HRV- The Historical Range of Variation or Variability (HRV) is a description of the change over time and space in the ecological condition of potential natural vegetation types and the ecological processes that shape those types.
What is variability in history?
Historical range of variability (HRV) describes the conditions of a natural system prior to intensive human alteration of that system. Systems exhibit variability through time because conditions change in response to disturbances. The concepts of Disturbance Regime and HRV are thus closely coupled.
What is natural range of variability?
The natural range of variability is typically defined by the period 100-200 years before European settlement, and is also surmised from knowledge of natural disturbance regimes. Natural range of variability is often used to describe disturbance processes, and the ecosystem variability that these disturbances create.
What is range of variability?
The range is a measure of variability because it indicates the size of the interval over which the data points are distributed. A smaller range indicates less variability (less dispersion) among the data, whereas a larger range indicates the opposite.
What is the range of natural variability in climate?
What is the range of natural variability in climate? Climate is continually varying on time scales ranging from seasons to the lifetime of Earth. Natural climate changes can take place on short time scales as a result of the rapid alterations to forcings (as described in section 1).
What is ecosystem variability?
Variability in the environment is determined by the interactions between physical and chemical conditions and it defines the diversity of habitats. As a core feature, habitats are characterized by fluctuations in physical, resource, and biological conditions, often determining specific micro-niches – here …
What is a difference in eye color among the same species called?
Individuals of a species have similar characteristics but they are rarely identical, the difference between them is called variation. Eye colour, skin tone and face shape are all determined by our genes so any variation that occurs will be due to the genes inherited? from our parents.