TY - JOUR

T1 - Tree demographics and soil charcoal evidence of fire disturbances in an inaccessible forest atop the Mount Lico inselberg, Mozambique

AU - Courtney Mustaphi, Colin

AU - Platts, Philip J.

AU - Willcock, Simon

AU - Timberlake, Jonathan

AU - Osborne, Jo

AU - Matimele, Hermenegildo

AU - Osgood, Hanniah

AU - Muiruri, Veronica

AU - Gehrels, Maria

AU - Bayliss, Julian

AU - Marchant, Robert

PY - 2024/9/3

Y1 - 2024/9/3

N2 - (1) Research aims and rationaleThe sheer rock cliffs of the Mount Lico inselberg, northern Mozambique, is relatively inaccessible to people. A 0.57 km2 forest covers the top of the isolated mountain and the tree demographics and soil offer an opportunity to investigate the long term fire ecology of the forests of the western, leeside of the mountain and potential for changing regional hydroclimate of the Late Holocene. (2) MethodsOn the western side of the mountaintop, a 20x20 m plot was surveyed for tree taxa , heights, and bole diameters. A 220 cm deep pit was dug into the forest soil and analysed to describe the soil texture and carbon content. C harcoal was quantified on sieved subsamples and classified into charcoal morphologies that were then grouped by how readily entrainable on an index score. Three radiocarbon dates were collected from pieces charcoal. (3) ResultsThe forest is a combination of montane and woodland tree taxa that differed from the older, more mesic eastern side and reflected differential disturbance patterns. The reddish loam soils dated to the Middle Holocene. Charcoal was present in all soil subsamples and varied little until increasing consistently during the past millennium. The charcoal morphologies suggested a combination of locally-derived charcoal and charcoal derived from the surrounding lowlands with the latter increasing in the past centuries. (4) Main conclusionsFew Holocene paleoenvironmental records have been developed from tropical soils in Africa and are useful in locations that do not host lakes and wetlands. Both tree demographics and soil charcoal suggest that changing forest disturbance regimes began during the past millennium. An understanding of history informs future conservation and appropriate management of these special places.

AB - (1) Research aims and rationaleThe sheer rock cliffs of the Mount Lico inselberg, northern Mozambique, is relatively inaccessible to people. A 0.57 km2 forest covers the top of the isolated mountain and the tree demographics and soil offer an opportunity to investigate the long term fire ecology of the forests of the western, leeside of the mountain and potential for changing regional hydroclimate of the Late Holocene. (2) MethodsOn the western side of the mountaintop, a 20x20 m plot was surveyed for tree taxa , heights, and bole diameters. A 220 cm deep pit was dug into the forest soil and analysed to describe the soil texture and carbon content. C harcoal was quantified on sieved subsamples and classified into charcoal morphologies that were then grouped by how readily entrainable on an index score. Three radiocarbon dates were collected from pieces charcoal. (3) ResultsThe forest is a combination of montane and woodland tree taxa that differed from the older, more mesic eastern side and reflected differential disturbance patterns. The reddish loam soils dated to the Middle Holocene. Charcoal was present in all soil subsamples and varied little until increasing consistently during the past millennium. The charcoal morphologies suggested a combination of locally-derived charcoal and charcoal derived from the surrounding lowlands with the latter increasing in the past centuries. (4) Main conclusionsFew Holocene paleoenvironmental records have been developed from tropical soils in Africa and are useful in locations that do not host lakes and wetlands. Both tree demographics and soil charcoal suggest that changing forest disturbance regimes began during the past millennium. An understanding of history informs future conservation and appropriate management of these special places.

KW - charcoal morphology

KW - disturbance ecology

KW - embers

KW - entrainment

KW - forest fires

KW - refugia

KW - taphonomy

KW - tropics

M3 - Article

JO - Plants, People, Planet

JF - Plants, People, Planet

SN - 2572-2611

ER -