The spatiotemporal distribution of pollen traits related to dispersal and desiccation tolerance in Canarian laurel forest
Nogué Bosch, Sandra (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Nascimento, Lea de (Universidad de La Laguna)
Graham, Laura (University of Birmingham)
Brown, Luke A. (University of Southampton)
Gomez Gonzalez, Luis Antonio (Tecnologías y Servicios Agrarios, S.A.)
Castilla-Beltrán, Alvaro (Universidad de La Laguna)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Fernández-Palacios, José María (Universidad de La Laguna)
Willis, Katherine (University of Oxford)
Universitat Autònoma de Barcelona. Temporal Ecology and Biogeography Lab

Data:	2022
Resum:	Questions: Pollen traits (e. g. , size, wall thickness, number of apertures) have been suggested to be relevant in terms of pollination mechanisms and the ability of the male gametophyte to withstand desiccation. We examined the spatiotemporal distribution of pollen traits related to dispersal (ornamentation and dispersal unit) and desiccation tolerance (wall thickness, presence of furrows and pores and pollen size). Specifically, we address two questions: how are the pollen traits distributed in relation to different levels of aridity? And, how did the pollen trait composition change with changing past environmental conditions?. Location: Laurel forests of La Gomera and Tenerife (Canary Islands). Methods: We used pollen rain from 19 forest plots on an elevational gradient of 1050 m and all laurel forest types (cold, dry, humid and ridge crest) to quantify pollen trait composition using community-weighted means. In addition, we used fossil pollen to examine the composition of pollen traits over 9600 years in response to known intervals of regional past climate change. Results: Our results demonstrated increased prevalence of desiccation tolerance-related pollen traits over drier areas of the laurel forest distribution. We also found increased prevalence of rich pollen grain ornamentation in the core of the laurel forest distribution. Holocene pollen functional diversity increased during a trend towards drier conditions as did the proportion of pollen grains with apertures and thicker walls to indicate desiccation tolerance. Conclusions: Our study provides the first step towards understanding the role of pollen traits when quantifying the dynamics of different plant communities.
Ajuts:	Agencia Estatal de Investigación PID2019-110521GB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1005
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Canary Islands ; Holocene ; Laurel forest ; Palaeoecology ; Pollen traits ; SDG 13 - Climate Action
Publicat a:	Journal of Vegetation Science, Vol. 33, Issue 5 (September/October 2022) , art. e13147, ISSN 1100-9233

DOI: 10.1111/jvs.13147

10 p, 3.4 MB

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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals)
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