Search

Your search keyword '"Bonal, R"' showing total 3 results
Start Over Author "Bonal, R" Publisher blackwell publishing
3 results on '"Bonal, R"'

1. The Relationship Between Maturation Size and Maximum Tree Size From Tropical to Boreal Climates.

Author

Journé V, Bogdziewicz M, Courbaud B, Kunstler G, Qiu T, Acuña MA, Ascoli D, Bergeron Y, Berveiller D, Boivin T, Bonal R, Caignard T, Cailleret M, Calama R, Camarero JJ, Chang-Yang CH, Chave J, Chianucci F, Curt T, Cutini A, Das A, Daskalakou E, Davi H, Delpierre N, Delzon S, Dietze M, Calderon SD, Dormont L, Espelta JM, Farfan-Rios W, Fenner M, Franklin J, Gehring C, Gilbert G, Gratzer G, Greenberg CH, Guignabert A, Guo Q, Hacket-Pain A, Hampe A, Han Q, Hanley ME, Lambers JHR, Holík J, Hoshizaki K, Ibanez I, Johnstone JF, Knops JMH, Kobe RK, Kurokawa H, Lageard J, LaMontagne J, Ledwon M, Lefèvre F, Leininger T, Limousin JM, Lutz J, Macias D, Mårell A, McIntire E, Moran EV, Motta R, Myers J, Nagel TA, Naoe S, Noguchi M, Norghauer J, Oguro M, Ourcival JM, Parmenter R, Pearse I, Pérez-Ramos IM, Piechnik Ł, Podgórski T, Poulsen J, Redmond MD, Reid CD, Samonil P, Scher CL, Schlesinger WH, Seget B, Sharma S, Shibata M, Silman M, Steele M, Stephenson N, Straub J, Sutton S, Swenson JJ, Swift M, Thomas PA, Uriarte M, Vacchiano G, Whipple A, Whitham T, Wright SJ, Zhu K, Zimmerman J, Żywiec M, and Clark JS

Subjects
Climate Change, Reproduction, Forests, Trees growth & development, Tropical Climate
Abstract

The fundamental trade-off between current and future reproduction has long been considered to result in a tendency for species that can grow large to begin reproduction at a larger size. Due to the prolonged time required to reach maturity, estimates of tree maturation size remain very rare and we lack a global view on the generality and the shape of this trade-off. Using seed production from five continents, we estimate tree maturation sizes for 486 tree species spanning tropical to boreal climates. Results show that a species' maturation size increases with maximum size, but in a non-proportional way: the largest species begin reproduction at smaller sizes than would be expected if maturation were simply proportional to maximum size. Furthermore, the decrease in relative maturation size is steepest in cold climates. These findings on maturation size drivers are key to accurately represent forests' responses to disturbance and climate change., (© 2024 John Wiley & Sons Ltd.)

Published
2024
Full Text
View/download PDF

2. Globally, tree fecundity exceeds productivity gradients.

Author

Journé V, Andrus R, Aravena MC, Ascoli D, Berretti R, Berveiller D, Bogdziewicz M, Boivin T, Bonal R, Caignard T, Calama R, Camarero JJ, Chang-Yang CH, Courbaud B, Courbet F, Curt T, Das AJ, Daskalakou E, Davi H, Delpierre N, Delzon S, Dietze M, Donoso Calderon S, Dormont L, Maria Espelta J, Fahey TJ, Farfan-Rios W, Gehring CA, Gilbert GS, Gratzer G, Greenberg CH, Guo Q, Hacket-Pain A, Hampe A, Han Q, Lambers JHR, Hoshizaki K, Ibanez I, Johnstone JF, Kabeya D, Kays R, Kitzberger T, Knops JMH, Kobe RK, Kunstler G, Lageard JGA, LaMontagne JM, Leininger T, Limousin JM, Lutz JA, Macias D, McIntire EJB, Moore CM, Moran E, Motta R, Myers JA, Nagel TA, Noguchi K, Ourcival JM, Parmenter R, Pearse IS, Perez-Ramos IM, Piechnik L, Poulsen J, Poulton-Kamakura R, Qiu T, Redmond MD, Reid CD, Rodman KC, Rodriguez-Sanchez F, Sanguinetti JD, Scher CL, Marle HSV, Seget B, Sharma S, Silman M, Steele MA, Stephenson NL, Straub JN, Swenson JJ, Swift M, Thomas PA, Uriarte M, Vacchiano G, Veblen TT, Whipple AV, Whitham TG, Wright B, Wright SJ, Zhu K, Zimmerman JK, Zlotin R, Zywiec M, and Clark JS

Subjects
Biodiversity, Climate, Fertility, Seeds, Forests, Trees
Abstract

Lack of tree fecundity data across climatic gradients precludes the analysis of how seed supply contributes to global variation in forest regeneration and biotic interactions responsible for biodiversity. A global synthesis of raw seedproduction data shows a 250-fold increase in seed abundance from cold-dry to warm-wet climates, driven primarily by a 100-fold increase in seed production for a given tree size. The modest (threefold) increase in forest productivity across the same climate gradient cannot explain the magnitudes of these trends. The increase in seeds per tree can arise from adaptive evolution driven by intense species interactions or from the direct effects of a warm, moist climate on tree fecundity. Either way, the massive differences in seed supply ramify through food webs potentially explaining a disproportionate role for species interactions in the wet tropics., (© 2022 John Wiley & Sons Ltd.)

Published
2022
Full Text
View/download PDF

3. Flowering synchrony drives reproductive success in a wind-pollinated tree.

Author

Bogdziewicz M, Pesendorfer M, Crone EE, Pérez-Izquierdo C, and Bonal R

Subjects
Flowers, Humans, Pollination, Reproduction, Seeds, Trees, Quercus, Wind
Abstract

Synchronised and quasi-periodic production of seeds by plant populations, known as masting, is implicated in many ecological processes, but how it arises remains poorly understood. Flowering and pollination dynamics are hypothesised to provide the mechanistic link for the observed relationship between weather and population-level seed production. We report the first experimental test of the phenological synchrony hypotheses as a driver of pollen limitation in mast seeding oaks (Quercus ilex). Higher flowering synchrony yielded greater pollination efficiency, which resulted in 2-fold greater seed set in highly synchronised oaks compared to asynchronous individuals. Pollen addition removed the negative effect of asynchronous flowering on seed set. Because phenological synchrony operates through environmental variation, this result suggests that oak masting is synchronised by exogenous rather than endogenous factors. It also points to a mechanism by which changes in flowering phenology can affect plant reproduction of mast-seeding plants, with subsequent implications for community dynamics., (© 2020 John Wiley & Sons Ltd.)

Published
2020
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results