Four centuries of vegetation change in the mid-elevation Andean forests of Ecuador

Dados Bibliográficos

ID12200799
AutoresSeringe Huisman (0000-0003-3250-7255, University of Amsterdam, autor correspondente), Seringe N Huisman, Mark B Bush (0000-0001-6894-8613, Florida Institute of Technology), Crystal N H Mcmichael (0000-0002-1064-1499, University of Amsterdam)
Ano2019
Volume28
Fascículo6
Páginas679-689
Data de publicação2019-04-09
Peer ReviewedSim
Open AccessSim
TipoARTICLE
PeriódicoVegetation History and Archaeobotany (JOURNAL)
Identificadores do periódicoISSN: 0939-6314 • E-ISSN: 1617-6278
EditoraSpringer Science+Business Media (PUBLISHER • DE)
DOI10.1007/s00334-019-00715-8
OpenAlexW2939600230
IdiomaEN
Citações recebidas2
Referências citadas46

Mid-elevation Andean ecosystems have immense species richness and endemism. Taxonomic composition is known to change through time on the eastern slopes of the Andes as a result of climatic change and disturbance events, both natural and by human actions. Fossil phytoliths can capture local scale vegetation changes, especially among monocotyledonous plants. Phytolith production is high in grasses and palms, plant groups that are particularly sensitive to climatic changes and disturbance events in Andean ecosystems. Here, we reconstruct four centuries of local-scale vegetation change and the corresponding fire history from lake sediment records retrieved from Lagunas Cormorán and Chimerella, located at ca. 1,700 m a.s.l. in the mid-elevation Andean forests of eastern Ecuador. The charcoal analysis of the lake sediments showed no sign of past fires, and no evidence of cultivation was found at either lake. The phytolith assemblages indicated changes in the relative abundances of palms, grasses and trees over the last few centuries, suggesting that mid-elevation Andean phytolith assemblages are sensitive to local scale vegetation dynamics. The largest change in vegetation occurred at the end of the Little Ice Age, at which point the diversity of palm phytoliths decreases. These phytolith assemblages are probably responding to changes in the cloud base position through time, which strongly influences the distributions of many plants and animals

Biology · Climate change · Disturbance (geology · Ecosystem · Elevation (ballistics · Endemism · Geography · Paleoecology · Physical geography · Phytolith · Pollen · Species richness · Vegetation (pathology · Amazonian Archaeology and Ethnohistory · Cassava research and cyanide · Plant Diversity and Evolution · Ecology · Geology · Paleontology