Reconstructing grassland fire history using sedimentary charcoal: Considering count, size and shape

K-REx Repository

Show simple item record Leys, B. A. Commerford, J. L. McLauchlan, Kendra K. 2017-11-30T21:44:21Z 2017-11-30T21:44:21Z 2017-04-27
dc.description Citation: Leys, B. A., Commerford, J. L., & McLauchlan, K. K. (2017). Reconstructing grassland fire history using sedimentary charcoal: Considering count, size and shape. Plos One, 12(4), 15. doi:10.1371/journal.pone.0176445
dc.description.abstract Fire is a key Earth system process, with 80% of annual fire activity taking place in grassland areas. However, past fire regimes in grassland systems have been difficult to quantify due to challenges in interpreting the charcoal signal in depositional environments. To improve reconstructions of grassland fire regimes, it is essential to assess two key traits: (1) charcoal count, and (2) charcoal shape. In this study, we quantified the number of charcoal pieces in 51 sediment samples of ponds in the Great Plains and tested its relevance as a proxy for the fire regime by examining 13 potential factors influencing charcoal count, including various fire regime components (e.g. the fire frequency, the area burned, and the fire season), vegetation cover and pollen assemblages, and climate variables. We also quantified the width to length (W: L) ratio of charcoal particles, to assess its utility as a proxy of fuel types in grassland environments by direct comparison with vegetation cover and pollen assemblages. Our first conclusion is that charcoal particles produced by grassland fires are smaller than those produced by forest fires. Thus, a mesh size of 120 mu m as used in forested environments is too large for grassland ecosystems. We recommend counting all charcoal particles over 60 mu m in grasslands and mixed grass-forest environments to increase the number of samples with useful data. Second, a W: L ratio of 0.5 or smaller appears to be an indicator for fuel types, when vegetation surrounding the site is before composed of at least 40% grassland vegetation. Third, the area burned within 1060m of the depositional environments explained both the count and the area of charcoal particles. Therefore, changes in charcoal count or charcoal area through time indicate a change in area burned. The fire regimes of grassland systems, including both human and climatic influences on fire behavior, can be characterized by long-term charcoal records.
dc.rights Attribution 4.0 International (CC BY 4.0)
dc.subject Macroscopic Charcoal
dc.subject Tallgrass Prairie
dc.subject Regimes
dc.subject Records
dc.subject Holocene
dc.subject Forests
dc.title Reconstructing grassland fire history using sedimentary charcoal: Considering count, size and shape
dc.type Article 2017
dc.citation.doi 10.1371/journal.pone.0176445
dc.citation.issn 1932-6203
dc.citation.issue 4
dc.citation.jtitle Plos One
dc.citation.spage 15
dc.citation.volume 12
dc.contributor.authoreid mclauch
dc.contributor.kstate McLauchlan, Kendra K.

Files in this item

This item appears in the following Collection(s)

Show simple item record

Attribution 4.0 International (CC BY 4.0) Except where otherwise noted, the use of this item is bound by the following: Attribution 4.0 International (CC BY 4.0)

Search K-REx


My Account


Center for the

Advancement of Digital