Is there tree senescence? The fecundity evidence
BOGDZIEWICZ, Michal
Uniwersytet im. Adama Mickiewicza w Poznaniu = Adam Mickiewicz University in Poznań [UAM]
Uniwersytet im. Adama Mickiewicza w Poznaniu = Adam Mickiewicz University in Poznań [UAM]
JULIO CAMARERO, J.
Instituto Pirenaico de Ecologìa = Pyrenean Institute of Ecology [Zaragoza] [IPE - CSIC]
Instituto Pirenaico de Ecologìa = Pyrenean Institute of Ecology [Zaragoza] [IPE - CSIC]
HILLE RIS LAMBERS, Janneke
Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] [ETH Zürich]
Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] [ETH Zürich]
LEDWON, Mateusz
Polska Akademia Nauk = Polish Academy of Sciences = Académie polonaise des sciences [PAN]
Polska Akademia Nauk = Polish Academy of Sciences = Académie polonaise des sciences [PAN]
CLARK, James
Nicholas School of the Environment
Laboratoire des EcoSystèmes et des Sociétés en Montagne [UR LESSEM]
< Reduce
Nicholas School of the Environment
Laboratoire des EcoSystèmes et des Sociétés en Montagne [UR LESSEM]
Language
en
Article de revue
This item was published in
Proceedings of the National Academy of Sciences of the United States of America. 2021-08-24, vol. 118, n° 34
National Academy of Sciences
English Abstract
Despite its importance for forest regeneration, food webs, and human economies, changes in tree fecundity with tree size and age remain largely unknown. The allometric increase with tree diameter assumed in ecological ...Read more >
Despite its importance for forest regeneration, food webs, and human economies, changes in tree fecundity with tree size and age remain largely unknown. The allometric increase with tree diameter assumed in ecological models would substantially overestimate seed contributions from large trees if fecundity eventually declines with size. Current estimates are dominated by overrepresentation of small trees in regression models. We combined global fecundity data, including a substantial representation of large trees. We compared size–fecundity relationships against traditional allometric scaling with diameter and two models based on crown architecture. All allometric models fail to describe the declining rate of increase in fecundity with diameter found for 80% of 597 species in our analysis. The strong evidence of declining fecundity, beyond what can be explained by crown architectural change, is consistent with physiological decline. A downward revision of projected fecundity of large trees can improve the next generation of forest dynamic models.Read less <
English Keywords
tree fecundity
tree senescence
tree life history
allometric scaling
crown architecture
ANR Project
Prévision du changement de la biodiversité
Origin
Hal imported
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