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Historic fire regime dynamics and forcing factors in the Boston Mountains, Arkansas, USA [An article from: Forest Ecology and Management]
Book Details
PublisherElsevier
ISBN / ASINB000PAUDXO
ISBN-13978B000PAUDX2
AvailabilityAvailable for download now
MarketplaceUnited States 🇺🇸
Description
This digital document is a journal article from Forest Ecology and Management, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
We used dendrochronological methods to construct three fire history chronologies in the interior of the Boston Mountains of Arkansas from 281 dated fire scars identified on 86 shortleaf pine (Pinus echinata) remnants and trees. We describe and contrast these interior sites with sites on the southern perimeter of Boston Mountains that were documented in an earlier study and examine human, topographic and climatic spatial and temporal controls on these fire regimes. Fire frequency and human population density at the interior sites were positively correlated during an early period (1680-1880) of low levels of population, but were negatively correlated during a later period (1881-2000) as human population levels increased to a much higher level. Wide spread fire occurred more often during drought years in the 1700s with fires likely achieving sizes unprecedented during the last century. The early (before 1810) fire scar record showed that fire intervals were about three times longer (MFI=35 years) at the interior sites than at the perimeter sites. Early transitional (1810-1830) settlement by Cherokees at population densities under 0.26humans/km^2 was highly correlated (r=0.90) with the number of fires per decade in the interior region of the Boston Mountains. Multiple regression analyses further implicated humans as well as short- and long-term climate variability such as forced by the El Nino/Southern Oscillation (ENSO) and Atlantic Multidecadal Oscillation (AMO).
Description:
We used dendrochronological methods to construct three fire history chronologies in the interior of the Boston Mountains of Arkansas from 281 dated fire scars identified on 86 shortleaf pine (Pinus echinata) remnants and trees. We describe and contrast these interior sites with sites on the southern perimeter of Boston Mountains that were documented in an earlier study and examine human, topographic and climatic spatial and temporal controls on these fire regimes. Fire frequency and human population density at the interior sites were positively correlated during an early period (1680-1880) of low levels of population, but were negatively correlated during a later period (1881-2000) as human population levels increased to a much higher level. Wide spread fire occurred more often during drought years in the 1700s with fires likely achieving sizes unprecedented during the last century. The early (before 1810) fire scar record showed that fire intervals were about three times longer (MFI=35 years) at the interior sites than at the perimeter sites. Early transitional (1810-1830) settlement by Cherokees at population densities under 0.26humans/km^2 was highly correlated (r=0.90) with the number of fires per decade in the interior region of the Boston Mountains. Multiple regression analyses further implicated humans as well as short- and long-term climate variability such as forced by the El Nino/Southern Oscillation (ENSO) and Atlantic Multidecadal Oscillation (AMO).
