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Fire frequency - this refers to the number of times fire occurs in a given area under a defined geologic time. The concept of fire frequency is often applied to local fire events. [25] Fire intensity - also known as fire severity or magnitude is the degree of fire or the magnitude of fire event. Fire intensity is categorized into low fire ...
First considered to be a preservational gap in the fossil record, the event was originally dubbed 'Olson's Gap'. [ 4 ] [ 10 ] To compound the difficulty in identifying the cause of the 'gap', researchers were having difficulty in resolving the uncertainty which exists regarding the duration of the overall extinction and about the timing and ...
Tree core sample collected with an increment boarer A cat-face fire scar on a ponderosa pine A cross section of a ponderosa pine fire scar showing several dated fire events The growth record of a tree in seasonal climates is preserved in the growth rings in the stem wood; the field of dendrochronology is the study of the record of climate and ...
Mariani et al. (2024) study changes of shrub cover in southeastern Australia since the Last Interglacial, and report evidence of reduction in shrub cover during the Holocene, related to Indigenous Australian population expansion and cultural fire use. [264] Review of the fossil record of photosynthetic microbes and plants from Ukraine, and of ...
Fire was an important factor in expanding and developing societies of early hominids. One impact fire might have had was social stratification. The power to make and wield fire may have conferred prestige and social position. [35] Fire also led to a lengthening of daytime activities, and allowed more nighttime activities. [45]
An iPad is a great tablet, but even during Cyber Monday, it costs about three times as much as the Amazon Fire HD tablet. This tablet can do nearly everything the iPad can — you can play games ...
The Cambrian explosion (also known as Cambrian radiation [1] or Cambrian diversification) is an interval of time beginning approximately in the Cambrian period of the early Paleozoic, when a sudden radiation of complex life occurred and practically all major animal phyla started appearing in the fossil record.
Harvard tied with Dartmouth and Columbia atop the conference at 5-2 this season, but scored head-to-head wins over both teams. Officially, the Ivy League recognized all three teams as co-champions.