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8 results for “flowering synchrony”
Among-individual variation in flowering phenology affects flowering synchrony and mating opportunity
<p><strong>Premise of the study:</strong> The timing and pattern of a plant's flowering can have important consequences for reproductive success. Variation in flowering phenology may influence the number of prospective mates, the risk of mating with lower quality individuals, and the likelihood of self-pollination. Here we use a common garden experiment to explore within- and among-population variation in phenology. Our work provides new insights into how flowering phenology shapes mating opportunity and flowering synchrony in a self-compatible perennial.</p> <p><strong>Methods:</strong> To quantify variation in flowering phenology we raised progeny from nine populations of<em> Mimulus ringens</em> in a common garden. For each individual, we measured phenological traits including age at flowering onset, daily floral display size, total flower number, and flowering synchrony with other members of the population, and related these traits to mating opportunity. We also tested how individual flowering schedules influence the magnitude of synchrony.</p> <p><strong>Key Results: </strong>Flowering phenology and synchrony varied substantially within and among populations. From day to day, plants often oscillated between large and small daily floral displays. Additionally, flowering schedules of individual plants strongly influenced flowering synchrony and, along with the number of flowering days, markedly affected plants' mating opportunity.</p> <p><strong>Conclusions:</strong> Phenological traits such as flowering synchrony can affect the quantity of mating opportunities and may be important targets of natural selection. Our results highlight the need for studies that quantify flowering patterns of individuals as well as populations.</p>
Among-individual variation in flowering phenology affects flowering synchrony and mating opportunity
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Flowering synchrony drives reproductive success in a wind-pollinated tree
Synchronized 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 hypothesized 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 synchronized 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 synchronized 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.
Long-term changes in flowering synchrony reflect climatic changes across an elevational gradient
<p>These are the data with the accompanying R code used in the article "Long-term changes in flowering synchrony reflect climatic changes across an elevational gradient", by Fisogni A, de Manincor N, Bertelsen CD, and Rafferty NE.</p> <p>We provide the raw data on flowering phenology, temperature and precipitation data in the study area, and overlap estimates used to evaluate temporal changes within and between elevations and their relationship with changing climatic variables.</p> <p>Data are .txt files with tab separated values.</p> <p>The raw dataset was created by C. David Bertelsen from field observations performed from 1984 to 2019 along a fixed transect in the Santa Catalina Mountains, Arizona, USA.</p>
Data from: Mating opportunity increases with synchrony of flowering among years more than synchrony within years in a nonmasting perennial
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Flowering synchrony drives reproductive success in a wind-pollinated tree
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Earlier spring reduces potential for gene flow via reduced flowering synchrony across an elevational gradient
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Data from: Latitudinal pattern of flowering synchrony in an invasive wind-pollinated plant
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