Are Reproductive Traits Related to Pollen Limitation in Plants? A Case Study from a Central European Meadow
Open Access
- 18 May 2020
- Vol. 9 (5), 640
- https://doi.org/10.3390/plants9050640
Abstract
The deficiency of pollen grains for ovule fertilization can be the main factor limiting plant reproduction and fitness. Because of the ongoing global changes, such as biodiversity loss and landscape fragmentation, a better knowledge of the prevalence and predictability of pollen limitation is challenging within current ecological research. In our study we used pollen supplementation to evaluate pollen limitation (at the level of seed number and weight) in 22 plant species growing in a wet semi-natural meadow. We investigated the correlation between the pollen limitation index (PL) and floral traits associated with plant reproduction or pollinator foraging behavior. We recorded significant pollen limitation for approximately 41% of species (9 out of 22 surveyed). Seven species had a significant positive response in seed production and two species increased in seed weight after pollen supplementation. Considering traits, PL significantly decreased with the number of pollinator functional groups. The relationship of PL with other examined traits was not supported by our results. The causes of pollen limitation may vary among species with regard to (1) different reproductive strategies and life history, and/or (2) temporary changes in influence of biotic and abiotic factors at a site.This publication has 49 references indexed in Scilit:
- Drivers of pollen limitation: macroecological interactions between breeding system, rarity, and diversityPlant Ecology & Diversity, 2013
- Differences in dichogamy and herkogamy contribute to higher selfing in contrasting environments in the annual Blackstonia perfoliata (Gentianaceae)Annals of Botany, 2013
- Changes in pollinator fauna cause spatial variation in pollen limitationJournal of Ecology, 2010
- Global pollinator declines: trends, impacts and driversTrends in Ecology & Evolution, 2010
- Is reproduction of endemic plant species particularly pollen limited in biodiversity hotspots?Oikos, 2010
- Field methods for sampling and storing nectar from flowers with low nectar volumesAnnals of Botany, 2008
- The interplay of pollinator diversity, pollination services and landscape changeJournal of Applied Ecology, 2008
- Selection on floral display in insect-pollinated Primula farinosa: effects of vegetation height and litter accumulationOecologia, 2006
- A comparative analysis of pollen limitation in flowering plantsBiological Journal of the Linnean Society, 2000
- Pollination Ecology of the Spring Wildflower Community of a Temperate Deciduous ForestEcological Monographs, 1986