Resource limitation underlying multiple masting models makes mast seeding sensitive to future climate change

Monks, Adrian; Monks, Joanne M.; Tanentzap, Andrew J.

doi:10.1111/nph.13817

Cited by 67 publications

(112 citation statements)

References 55 publications

(113 reference statements)

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“…), and that the flower production is triggered by high temperatures during flower buds initiation attenuated by plant resource state (Monks et al. ). In such mast flowering species (i.e., in which flowering and fruiting intensity are coupled), variable seed production patterns depend on flowering efforts that are driven by environmental variation, either directly, or as a cue (Kelly et al.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, the tree response to the weather cue seems to be defined by plant resource state, a mechanism recently called “resource‐limited floral induction” (Monks et al. ). Nonetheless, we note that the Δ T model received similar AICc support for beech pollen production as the resource‐limited floral induction model, i.e., ΔAICc = 3.62, but Δ T has two parameters less than the resource‐limited model.…”

Section: Discussionmentioning

confidence: 99%

“…We also included the interaction term between last summer T max and previous year seed crop (i.e., resource‐limited floral induction model, Monks et al. ). Based on our aerobiological experience (Kasprzyk , Grewling et al.…”

Section: Methodsmentioning

confidence: 99%

“…In analysis (2), the response was total pollen (log‐transformed in case of beech to improve residual distribution), while predictors included combinations of mean daily temperature during the pollen season, previous summer T max , seed crop size in the previous year, as well as interaction term between last summer T max and crop size in the previous year (Monks et al. ), or Δ T (Kelly et al. ).…”

Section: Methodsmentioning

confidence: 99%

“…Monks et al. ), or the temperature difference between two summers preceeding seed production (the Δ T model) (Piovesan and Adams , Övergaard et al. , Drobyshev et al.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Masting in wind‐pollinated trees: system‐specific roles of weather and pollination dynamics in driving seed production

Bogdziewicz

Szymkowiak

Kasprzyk

et al. 2017

Ecology

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Masting, the highly variable production of synchronized large seed crops, is a common reproductive strategy in plant populations. In wind-pollinated trees, flowering and pollination dynamics are hypothesized to provide the mechanistic link for the well-known relationship between weather and population-level seed production. Several hypotheses make predictions about the effect of weather on annual pollination success. The pollen coupling hypothesis predicts that weather and plant resources drive the flowering effort of trees, which directly translates into the size of seed crops through efficient pollination. In contrast, the pollination Moran effect hypothesis predicts that weather affects pollination efficiency, leading to occasional bumper crops. Furthermore, the recently formulated phenology synchrony hypothesis predicts that Moran effects can arise because of weather effects on flowering synchrony, which, in turn, drives pollination efficiency. We investigated the relationship between weather, airborne pollen, and seed production in common European trees, two oak species (Quercus petraea and Q. robur) and beech (Fagus sylvatica) with a 19-yr data set from three sites in Poland. Our results show that warm summers preceding flowering correlated with high pollen abundance and warm springs resulted in short pollen seasons (i.e., high flowering synchrony) for all three species. Pollen abundance was the best predictor for seed crops in beech, as predicted under pollen coupling. In oaks, short pollen seasons, rather than pollen abundance, correlated with large seed crops, providing support for the pollination Moran effect and phenology synchrony hypotheses. Fundamentally different mechanisms may therefore drive masting in species of the family Fagacae.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…Monks et al. ), or the temperature difference between two summers preceeding seed production (the Δ T model) (Piovesan and Adams , Övergaard et al. , Drobyshev et al.…”

Section: Introductionmentioning

confidence: 99%

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Masting in wind‐pollinated trees: system‐specific roles of weather and pollination dynamics in driving seed production

Bogdziewicz

Szymkowiak

Kasprzyk

et al. 2017

Ecology

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Synchronized expression of FLOWERING LOCUS T between branches underlies mass flowering in Fagus crenata

et al. 2018

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Masting is the intermittent and synchronized production of a large amount of flower and seed in plant populations. This population-level phenomenon is caused by individual-level variability in reproduction and its synchrony between individuals. The variability at the individual level is induced by synchronized reproduction between branches within an individual because a tree is an assemblage of branches that are considered as semiautonomous units. However, there have been no empirical studies that quantify the degree of reproductive synchrony at the branch level within the same tree in masting species. Here, we evaluated the reproductive synchrony within individuals by monitoring flowering dynamics and expression level of a flowering-time gene at the branch-level in a typical masting species, Fagus crenata Blume. The 4-year census showed that the branch-level gene expression was highly variable between years and was strongly synchronized between branches. The branch-level synchrony in flowering-time gene expression was followed by coherent flowering cycle at the whole individual. To examine the causal relationship between gene expression and climatic factors, we performed a nonlinear statistical analysis called convergent cross-mapping using the time course data of gene expression and environmental variables. Our results indicated that the observed gene expression pattern was well cross-mapped by temperature or precipitation. However, this cross-mapping skill was lower than that of randomly generated seasonal dynamics, implying a combination of internal and external environmental signals is more likely to regulate gene expression dynamics in F. crenata. Our results provide the first empirical evidence that synchronized expression of a flowering-time gene between branches underlies integrated flowering behavior at the individual level.

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Weather cues associated with masting behavior dampen the negative autocorrelation between past and current reproduction in oaks

Moreira

Abdala‐Roberts

Pérez-Ramos

et al. 2019

American J of Botany

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Premise of the Study The influence of weather conditions on masting and the ecological advantages of this reproductive behavior have been the subject of much interest. Weather conditions act as cues influencing reproduction of individual plants, and similar responses expressed across many individuals lead to population‐level synchrony in reproductive output. In turn, synchrony leads to benefits from economies of scale such as enhanced pollination success and seed predator satiation. However, there may also be individual‐level benefits from reproductive responses to weather cues, which may explain the origin of masting in the absence of economies of scale. In a previous study, we found support for a mechanism whereby individual responses to weather cues attenuate the negative autocorrelation between past and current annual seed production—a pattern typically attributed to resource limitation and reproductive tradeoffs among years. Methods Here we provide a follow‐up and more robust evaluation of this hypothesis in 12 species of oaks (Quercus spp.), testing for a negative autocorrelation (tradeoff) between past and current reproduction and whether responses to weather cues associated with masting reduce the strength of this negative autocorrelation. Key Results Our results showed a strong negative autocorrelation for 11 of the species, and that species‐specific reproductive responses to weather cues dampened this negative autocorrelation in 10 of them. Conclusions This dampening effect presumably reflects a reduction in resource limitation or increased resource use associated with weather conditions, and suggests that responses to weather cues conferring these advantages should be selected for based on individual benefits.

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Resource limitation underlying multiple masting models makes mast seeding sensitive to future climate change

Cited by 67 publications

References 55 publications

Masting in wind‐pollinated trees: system‐specific roles of weather and pollination dynamics in driving seed production

Masting in wind‐pollinated trees: system‐specific roles of weather and pollination dynamics in driving seed production

Synchronized expression of FLOWERING LOCUS T between branches underlies mass flowering in Fagus crenata

Weather cues associated with masting behavior dampen the negative autocorrelation between past and current reproduction in oaks

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