caa a22 4500 445358858 CHVBK 20180317142909.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s00334-010-0252-4 doi (NATIONALLICENCE)springer-10.1007/s00334-010-0252-4 Late Holocene vegetation, fire, climate and upper forest line dynamics in the Podocarpus National Park, southeastern Ecuador [Elektronische Daten] [Fernando Rodríguez, Hermann Behling] Late Holocene vegetation, fire, climate and upper forest line dynamics were studied based on detailed pollen and charcoal analyses. Two sediment cores, from the Rabadilla de Vaca mire (RVM) and the Valle Pequeño bog (VP), with an age of about 2100 and 1630calyrs b.p., respectively, were taken at the modern upper forest line in the Parque Nacional Podocarpus (Podocarpus National Park) in southeastern Ecuador. The two pollen records reflect relatively stable vegetation with slight changes in floral composition during the recorded period. Changes of the proportion between subpáramo and páramo vegetation are related to lower and higher frequency of fires. The RVM records show that the upper forest line moved to a higher elevation between 1630 and 880calyrs b.p., stabilising after 310cal yrs b.p. Human impact is suggested by a high fire frequency, mainly between 1800-1600 and 880-310cal yrs b.p. The VP records indicate no marked changes in the upper forest line. The charcoal records suggest an increased human impact from 230cal yrs b.p. to the present. The results indicate that high fire frequency is an important factor in reducing the expansion of subpáramo vegetation and upper montane rainforest and in favouring the distribution of grass páramo. Since there is a clear correlation between fire and vegetation dynamics, it is difficult to detect how far climate change also played a significant role in upper forest line changes during the late Holocene. The Author(s), 2010 Ecuador nationallicence Upper forest line nationallicence Fire history nationallicence Climate change nationallicence Palynology nationallicence Late Holocene nationallicence Rodríguez Fernando Department of Palynology and Climate Dynamics, Albrecht-von-Haller Institute for Plant Sciences, University of Göttingen, Untere Karspüle 2, 37073, Göttingen, Germany aut Behling Hermann Department of Palynology and Climate Dynamics, Albrecht-von-Haller Institute for Plant Sciences, University of Göttingen, Untere Karspüle 2, 37073, Göttingen, Germany aut Vegetation History and Archaeobotany Springer-Verlag 20/1(2011-01-01), 1-14 0939-6314 20:1<1 2011 20 334 https://doi.org/10.1007/s00334-010-0252-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00334-010-0252-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rodríguez Fernando Department of Palynology and Climate Dynamics, Albrecht-von-Haller Institute for Plant Sciences, University of Göttingen, Untere Karspüle 2, 37073, Göttingen, Germany aut NATIONALLICENCE 700 1- Behling Hermann Department of Palynology and Climate Dynamics, Albrecht-von-Haller Institute for Plant Sciences, University of Göttingen, Untere Karspüle 2, 37073, Göttingen, Germany aut NATIONALLICENCE 773 0- Vegetation History and Archaeobotany Springer-Verlag 20/1(2011-01-01), 1-14 0939-6314 20:1<1 2011 20 334 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer