The frequent fire return interval, a natural fire ecology, perpetuates numerous successional communities.
2.
Fire return intervals of 1 to 3 years favor herbaceous plants; longer intervals favor dense shrubs.
3.
The sensors emit acoustic pulses, with a control unit measuring the return interval of each reflected signal and calculating object distances.
4.
Historically, the forests of this region experienced a relatively frequent fire return interval, which prevented buildup of heavy fuel loads.
5.
Research in Alaska has shown fire-event return intervals, ( FRIs ) that typically vary from 150 to 200 years with dryer lowland areas burning more frequently than wetter upland areas.
6.
While lightning fires are frequent in lodgepole pine communities, they usually remain small, with estimated fire return intervals at Yosemite National Park that are long ( relative to most other forest types ).
7.
The Calgary flood had a return interval ranging from 70 to 100 years . with a flow of the Bow River in Calgary measured at c . when the flood reached its peak level on June 21, 2013.
8.
Laurel sumac has adapted to fire return intervals of 50-100 + years in the chaparral areas where it grows, and after a fire burns its above ground parts, a large burl underground resprouts new stems and leaves.
9.
However, as Heinselman ( 1981 ) noted, each physiographic site tends to have its own return interval, so that some areas are skipped for long periods, while others might burn two-times or more often during a nominal fire rotation.
10.
Even if the historic return interval is a lot less than 1000 years, if there are a number of less severe events of a similar nature recorded, the use of such a model is likely to provide useful information to help estimate the future return interval.
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