Selection for a floral trait is not mediated by pollen receipt even though seed set in the population is pollen-limited
نویسندگان
چکیده
منابع مشابه
Modest Pollen Limitation of Lifetime Seed Production Is in Good Agreement with Modest Uncertainty in Whole-Plant Pollen Receipt.
We recently introduced a model that predicts the degree to which a plant's lifetime seed production may be constrained by unpredictable shortfalls of pollen receipt ("pollen limitation"). Burd's comment in this issue criticized our analysis, first by arguing that the empirical literature documents much higher levels of pollen limitation than our model predicts and then suggesting that the appar...
متن کاملIs pollen limited? The answer is blowin’ in the wind
Pollen from wind-pollinated trees has traditionally been assumed to be abundant and to travel long distances, resulting in extensive gene flow. However, recent empirical work by Knapp et al., genetic analysis by Sork et al., and theoretical models by Satake and Iwasa conclude that short-distance dispersal of limited pollen might be common and play an important role in causing the highly variabl...
متن کاملIs the pollen-limited mistletoe Peraxilla tetrapetala (Loranthaceae) also seed limited?
Seed production in the endemic New Zealand mistletoe Peraxilla tetrapetala (Loranthaceae) has been shown to be consistently pollen limited, but to date there has been no test of whether the species is also seed limited. If it is not seed limited, then pollen limitation may have no effect on population size.We tested for seed limitation by sowing seeds onto host trees at high and low densities a...
متن کاملReproduction of Echinacea angustjfolia in fragmented prairie is pollen-limited but not pollinator-limited.
Pollen limitation of plant reproduction occurs in many plant species, particularly those in fragmented habitat; however, causes of pollen limitation are often unknown. We investigated the relationship between pollen limitation and pollinator visitation in the purple coneflower, Echinacea angustifolia (Asteraceae), which grows in the extremely fragmented tall grass prairie of North America. Prev...
متن کاملEvolutionary and ecological consequences of multiscale variation in pollen receipt for seed production.
Variation in resource availability can select for traits that reduce the negative impacts of this variability on mean fitness. Such selection may be particularly potent for seed production in flowering plants, as they often experience variation in pollen receipt among individuals and among flowers within individuals. Using analytically tractable models, we examine the optimal allocations for pr...
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ژورنال
عنوان ژورنال: Functional Ecology
سال: 2013
ISSN: 0269-8463
DOI: 10.1111/1365-2435.12131