Reconstruction of Fire History Using ‘Dry’ Sediments, An Approach for Microcharcoal Studies from the Sierras Pampeanas, NW Argentina

Lindskoug, Henrik B.; Marconetto, María Bernarda

doi:10.1080/14614103.2017.1408181

Cited by 3 publications

(4 citation statements)

References 43 publications

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“…Abundant microcharcoal, black vegetal structures, and burned phytoliths were identified using the microcharcoal identification criteria of published studies (Lindskoug and Marconetto, 2019; Turner et al, 2008). Microcharcoal particles with diameters of 15–50 μm comprise a majority of the charcoal assemblages on phytolith slides.…”

Section: Resultsmentioning

confidence: 99%

“…The abundance of burned grass phytoliths has been used as a proxy for fire incidence, and as a supplementary approach to the microscopic charcoal method (Cordova et al, 2011; Gu et al, 2008). Black vegetal structures are considered more conservative indicators of fire activities (Lindskoug and Marconetto, 2019). The concentration of black vegetal structures and burned phytolith varied with microcharcoal concentrations.…”

Section: Discussionmentioning

confidence: 99%

“…Black vegetal structures (Figure 2Ac) are charcoal particles with visible cellular structures. These particles were differentiated from microcharcoal which lack visible cellular structures but were identified as charcoal from its color, shape, and clear edges (Lindskoug and Marconetto, 2019). Some authors defined natural discoloration as being transparent and opalescent, as opposed to the dull opaque discoloration that occurs with natural fires (Cordova et al, 2011; Gu et al, 2008; Li et al, 2010; Parr, 2006).…”

Section: Methodsmentioning

confidence: 99%

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The ratio of microcharcoal to phytolith content in soils as a new proxy of fire activity

Wen

Vachula

et al. 2020

The Holocene

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Microcharcoal in soils and sediments is an ideal proxy for studying fire activity. Phytoliths in soils and sediments record the environmental conditions in which the phytoliths were formed by plants. However, our understanding of the relationships between fire activity, plant communities, and the preservation of microcharcoal and phytoliths in soils and sediments remains limited. In this study, we collected soils and sediments across a gradient of burned and unburned forest in southwest China, and analyzed the microcharcoals and phytoliths in these samples to understand the relationships between these microfossils (ratios of microcharcoal to phytolith particles (Ch/Ph)), fire activity, and vegetation cover. We show that the Ch/Ph ratios recorded fire activity and were significantly different across the gradient of burned to unburned forest. The highest and lowest ratios (0.25 and 0.01) were found in burned forest (Bs1) and unburned forest samples (Us2), respectively. The ratios gradually decreased with increasing distance from the fire. This study suggests the ratio (Ch/Ph) to be a useful proxy for studying fire activity and/or history using soils and sediments.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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The ratio of microcharcoal to phytolith content in soils as a new proxy of fire activity

Wen

Vachula

et al. 2020

The Holocene

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“…However, microcharcoal fragments observed on pollen slides usually derive from a wide catchment and can be subject to increased breakage when Zone description Fig. 6 Cyperaceae and Poaceae pollen and plant macrofossil diagram for Big River Marsh core BRM1, shown alongside the Foraminifera-derived reconstruction of palaeo-marsh elevation in standardised water level index (F-SWLI) units, where a value of 100 corresponds to mean tide level and 200 is the highest occurrence of Foraminifera (from Kemp et al 2018) transported via water (Patterson III et al 1987;Schmidt and Noack 2000;Lindskoug and Marconetto 2019). The increase in fragment concentration in BRM1 may therefore not necessarily represent anthropogenic presence in the Port au Port region, but instances of increased wildfire, site exposure and hydrological change, particularly as peaks in microcharcoal fragments are evident from at least ca.…”

Section: Upland Environmental Changesmentioning

confidence: 99%

Saltmarsh archives of vegetation and land use change from Big River Marsh, SW Newfoundland, Canada

Selby

Roe

Wright

et al. 2021

Veget Hist Archaeobot

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Pollen and plant macrofossils are often well-preserved in coastal sediments, providing a palaeoenvironmental record of sea-level and landscape change. In this study, we examine the pollen and plant macrofossil assemblages of a well-dated saltmarsh sediment core from southwest Newfoundland, Canada, to establish recent coastal vegetation and land use change, to increase the knowledge of anthropogenic activities in the area and develop pollen chronozones for reconstructing marsh accumulation rates and to examine the representation of plant macrofossil remains in the wetland pollen profile. Grouping the pollen record into upland and wetland assemblages allows local events related to hydrological change to be separated from landscape-scale changes. The wetland pollen and plant macrofossil records indicate a general acceleration in sea-level rise ca. ad 1700. The sedge pollen and plant macrofossil records attest to multiple phases of rhizome encroachment during inferred periods of marine regression. Two chronozones are identified from the upland pollen profile; the first associated with the settlement of St. George’s Bay ca. ad 1800, signalled by increases in Plantago lanceolata and Ambrosia pollen; the second with the permanent settlement of the Port au Port peninsula ca. ad 1850, indicated by increased P. lanceolata and Rumex pollen. Comparison of the plant macrofossil and wetland pollen profiles highlights the underrepresentation of grass pollen preserved in the saltmarsh sediments and a need for further analysis of the zonation, pollen dispersal and macrofossil representation of sedge species in saltmarshes.

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Fire ecology, past landscapes and human interaction: contributions from pedoanthracology, Balcosna Valley, Catamarca, North-western Argentina

Lindskoug

Villafañez

2020

Archaeol Anthropol Sci

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Reconstruction of Fire History Using ‘Dry’ Sediments, An Approach for Microcharcoal Studies from the Sierras Pampeanas, NW Argentina

Cited by 3 publications

References 43 publications

The ratio of microcharcoal to phytolith content in soils as a new proxy of fire activity

The ratio of microcharcoal to phytolith content in soils as a new proxy of fire activity

Saltmarsh archives of vegetation and land use change from Big River Marsh, SW Newfoundland, Canada

Fire ecology, past landscapes and human interaction: contributions from pedoanthracology, Balcosna Valley, Catamarca, North-western Argentina

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