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10.1073/pnas.2105666118

http://scihub22266oqcxt.onion/10.1073/pnas.2105666118
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suck abstract from ncbi


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pmid34663728      Proc+Natl+Acad+Sci+U+S+A 2021 ; 118 (43): ä
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  • COVID-19 lockdowns drive decline in active fires in southeastern United States #MMPMID34663728
  • Poulter B; Freeborn PH; Jolly WM; Varner JM
  • Proc Natl Acad Sci U S A 2021[Oct]; 118 (43): ä PMID34663728show ga
  • Fire is a common ecosystem process in forests and grasslands worldwide. Increasingly, ignitions are controlled by human activities either through suppression of wildfires or intentional ignition of prescribed fires. The southeastern United States leads the nation in prescribed fire, burning ca. 80% of the country's extent annually. The COVID-19 pandemic radically changed human behavior as workplaces implemented social-distancing guidelines and provided an opportunity to evaluate relationships between humans and fire as fire management plans were postponed or cancelled. Using active fire data from satellite-based observations, we found that in the southeastern United States, COVID-19 led to a 21% reduction in fire activity compared to the 2003 to 2019 average. The reduction was more pronounced for federally managed lands, up to 41% below average compared to the past 20 y (38% below average compared to the past decade). Declines in fire activity were partly affected by an unusually wet February before the COVID-19 shutdown began in mid-March 2020. Despite the wet spring, the predicted number of active fire detections was still lower than expected, confirming a COVID-19 signal on ignitions. In addition, prescribed fire management statistics reported by US federal agencies confirmed the satellite observations and showed that, following the wet February and before the mid-March COVID-19 shutdown, cumulative burned area was approaching record highs across the region. With fire return intervals in the southeastern United States as frequent as 1 to 2 y, COVID-19 fire impacts will contribute to an increasing backlog in necessary fire management activities, affecting biodiversity and future fire danger.
  • |*Pandemics/prevention & control[MESH]
  • |*Physical Distancing[MESH]
  • |*SARS-CoV-2[MESH]
  • |Biodiversity[MESH]
  • |COVID-19/epidemiology/*prevention & control[MESH]
  • |Droughts/statistics & numerical data[MESH]
  • |Ecosystem[MESH]
  • |Forests[MESH]
  • |Human Activities[MESH]
  • |Humans[MESH]
  • |Models, Statistical[MESH]
  • |Southeastern United States/epidemiology[MESH]
  • |Weather[MESH]


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