Late Holocene climate dynamics and human impact inferred from vegetation and fire history of the Caatinga, in Northeast Brazil

2020 ◽  
Vol 282 ◽  
pp. 104299
Author(s):  
Caio Alves de Moraes ◽  
Marcelo A.T. de Oliveira ◽  
Hermann Behling
The Holocene ◽  
2003 ◽  
Vol 13 (5) ◽  
pp. 677-690 ◽  
Author(s):  
Frank Oldfield ◽  
Rebecca Wake ◽  
John Boyle ◽  
Richard Jones ◽  
Steve Nolan ◽  
...  

2002 ◽  
Vol 50 (4) ◽  
pp. 455 ◽  
Author(s):  
John R. Dodson ◽  
Stuart D. Mooney

The late Holocene of south-eastern Australia was typified by stable climate, vegetation and sedimentary regimes, in relative equilibrium with Aboriginal land use and fire management. The arrival of Europeans, with the associated vegetation clearance, introduction of exotic plants and animals, notably for grazing and agriculture and a change in fire regimes, resulted in changes in vegetation and sedimentary patterns. Impacts varied in type and magnitude through the region and evidence of impacts that is preserved varies with sedimentary setting. Here we take a number of proxy measures of vegetation change, fire history, erosion and weathering from six sediment sections across south-eastern Australia and use an index to measure overall rate of change. This shows that the vegetation and environmental systems of south-eastern Australia have been very sensitive to human impact following European settlement.


The Holocene ◽  
2015 ◽  
Vol 26 (3) ◽  
pp. 489-501 ◽  
Author(s):  
Simon van Bellen ◽  
Dmitri Mauquoy ◽  
Paul DM Hughes ◽  
Thomas P Roland ◽  
Tim J Daley ◽  
...  

2014 ◽  
Vol 24 (4) ◽  
pp. 487-501 ◽  
Author(s):  
Serge D. Muller ◽  
Laila Rhazi ◽  
Benjamin Andrieux ◽  
Marion Bottollier-Curtet ◽  
Séverine Fauquette ◽  
...  

2015 ◽  
Vol 84 (3) ◽  
pp. 348-357 ◽  
Author(s):  
Alicia White ◽  
Christy Briles ◽  
Cathy Whitlock

The Cascade Range of southwestern Oregon contains some of North America's most diverse forests, but the ecological history of this area is poorly understood. A 7900-yr-long pollen and charcoal record was examined to better understand past changes in vegetation and fire activity in relation to large-scale climate variability. From 7900 to 3500 cal yr BP, the dominance of xerophytic species and the frequent fires are consistent with a climate that was warmer and drier than at present. The period from 3500 cal yr BP to present experienced an abundance of mesophytic taxa and reduced fire frequency, suggesting cooler and wetter conditions. The regional history of Abies indicates that it was most widespread during the late-glacial period; its range contracted during the early Holocene thermal maximum, and it steadily expanded during the middle and late Holocene. In contrast, Pseudotsuga was restricted in range during the glacial period, became abundant at low-elevation sites in the Coast and northern Cascade ranges during the early Holocene, and was more prevalent in southern mid-elevation sites as the climate became cooler and wetter in the late Holocene. The sensitivity of these species to past climate change suggests that biogeographic responses to future conditions will be highly variable in this region.


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