Modelling the effect of temperature changes on plant life-form distribution across a treeline ecotone in the tropical Andes
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URI (для ссылок/цитирований):
https://www.tandfonline.com/doi/full/10.1080/17550874.2019.1655108https://elib.sfu-kras.ru/handle/2311/128498
Автор:
Alberto, Arzac
Luis D. Llambí
Raphael, Dulhoste
José M. Olano
Eulogio, Chacón-Moreno
Коллективный автор:
Институт экологии и географии
Кафедра экологии и природопользования
Дата:
2019-08Журнал:
Plant Ecology & DiversityКвартиль журнала в Scopus:
Q2Квартиль журнала в Web of Science:
Q3Библиографическое описание:
Alberto, Arzac. Modelling the effect of temperature changes on plant life-form distribution across a treeline ecotone in the tropical Andes [Текст] / Arzac Alberto, Luis D. Llambí, Dulhoste Raphael, José M. Olano, Chacón-Moreno Eulogio // Plant Ecology & Diversity. — 2019.Аннотация:
Background: Classifying species from the high tropical Andes into plant life forms (PLF) can
provide a more functional understanding of tropical treeline dynamics. However, little is
known about the potential response of PLFs to climate warming.
Aims: The objective of this work was to evaluate the response of PLFs to environmental
conditions above the upper montane forest in the Venezuelan Andes and forecast their
potential distribution under warming scenarios using habitat suitability models.
Methods: We classified species into nine PLFs, analysed their current distribution using CCA
and non-linear multiple regressions and forecasted their potential distribution under warming
scenarios. We used anatomical leaf traits for shrubs and caulescent rosettes to refine their
potential responses to climate.
Results: Tree cover sharply decreased with increasing elevation, while shrub and caulescent
rosette distribution differed depending on their leaf traits. Projections suggested an upslope
shift of all PLFs with warming and an increase in tree cover.
Conclusions: The analysis of the distribution of PLFs, by linking plant adaptive strategies to
topography/climate, allowed projecting changes in vegetation physiognomy in response to
warming. Projections of a moderate increase in tree cover in the grassland páramo did not
indicate the formation of closed forests above the forest line.