Recruitment of a genotyped Quercus robur L. seedling cohort in an expanding oak forest stand: diversity, dispersal, and performance across habitats

Autor: Arndt Hampe, Sylvie Oddou-Muratorio, Gabriel Gerzabek
Přispěvatelé: Biodiversité, Gènes & Communautés (BioGeCo), Université de Bordeaux (UB)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Ecologie des Forêts Méditerranéennes (URFM), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), The study was funded by a EU Marie Curie Postdoctoral Grant (MEIF-CT2006) to A.H. and by the EU ERA-NET BiodivERsA Projects TIPTREE and SPONFOREST (BiodivERsA2-2012-15 and BiodivERsA3-2015-58) as well as by the INRA ACCAF project FORADAPT and the ANR project ExpandTree (ANR-13-ISV7-0003)., ANR-13-ISV7-0003,ExpandTree,PATRONS SPATIO-TEMPORELS DE COLONISATION DANS UNE POPULATION D'ARBRES EN EXPANSION: une approche integrant génétique et génomique(2013), ANR-12-EBID-0003,Tiptree,Scénarios pour la dynamique de la biodiversité des forêts européennes sous changement global identifier les points de basculement micro-evolutifs(2012), ANR-16-EBI3-0011,SPONFOREST,Unraveling the potential of SPONtaneous FORest ESTablishment for improving ecosystem functions and services in dynamic landscapes(2016), European Project: MEIF-CT2006-041632
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Annals of Forest Science
Annals of Forest Science, Springer Nature (since 2011)/EDP Science (until 2010), 2020, 77 (3), pp.78. ⟨10.1007/s13595-020-00979-5⟩
Annals of Forest Science, Springer Nature (since 2011)/EDP Science (until 2010), 2020, 77 (3), pp.1-12. ⟨10.1007/s13595-020-00979-5⟩
Annals of Forest Science, 2020, 77 (3), pp.78. ⟨10.1007/s13595-020-00979-5⟩
ISSN: 1286-4560
1297-966X
DOI: 10.1007/s13595-020-00979-5⟩
Popis: International audience; Key message: Few studies have linked the origin of dispersed tree seeds with their post-dispersal fate. We show that habitat-dependent mortality in a pedunculate oak (Quercus roburL.) seedling cohort reshapes the effective fecundity of individual mother trees but has little effect on the cohort's genetic diversity. Context : Initial tree recruitment plays a key role in forest regeneration, yet little is known on how patterns of recruit mortality feed back on the fecundity of reproducing trees. Aims : To investigate how among-habitat variation in seedling arrival and survival alters initial patterns of genetic diversity and maternal reproductive success. Methods : We genotyped a pedunculate oak seedling cohort (n = 809) and monitored it over 3 years. The mother trees of 81% of the seedlings were identified through parentage analysis. Seedlings were assigned to one of three habitats (broadleaved forest, pine plantation, or open area). Results : Broadleaved forest received most seedlings (approximate to 65%) but their survival was reduced by a third compared with pine plantations or open areas. Thus, mother trees dispersing many descendants to broadleaved forest suffered a disproportionate reduction of their reproductive success. Genetic diversity did not vary among habitats, nor over the monitoring period. Conclusion : The quality of seed dispersal, in terms of delivery sites, can considerably influence the reproductive success of individual mother trees without affecting the overall genetic diversity of the recruits.
Databáze: OpenAIRE
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