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Reproductive success, fruit removal and local distribution patterns in the early-flowering shrub Daphne mezereum
Stockholm University, Faculty of Science, Department of Ecology, Environment and Plant Sciences.ORCID iD: 0000-0002-2153-4672
Stockholm University, Faculty of Science, Department of Ecology, Environment and Plant Sciences.ORCID iD: 0000-0001-7580-5135
Stockholm University, Faculty of Science, Department of Ecology, Environment and Plant Sciences.ORCID iD: 0000-0001-8539-8967
Number of Authors: 32023 (English)In: Nordic Journal of Botany, ISSN 0107-055X, E-ISSN 1756-1051, no 10, article id e03871Article in journal (Refereed) Published
Abstract [en]

In insect-pollinated, bird-dispersed plants, both investment in reproduction and reproductive success involve interactions between plants and their pollinators and dispersers. The outcome of these plant–animal interactions may be affected by the number of flowers and fruits, as well as by the plants' local environment and by spatial associations among plants. In this study we mapped the spatial distribution of individuals in a population of the early flowering, fleshy-fruited shrub Daphne mezereum, in a forest in boreo-nemoral Sweden. For all mapped individuals we collected data on numbers of flowers and fruits and fruit removal, for three consecutive years. We analysed spatial associations among individuals, and the effects on reproductive performance and fruit removal of plant height, numbers of flowers and fruits, distance to forest edge, and neighbouring flower and fruit density. Our results show that the density of D. mezereum increases with increasing proximity to forest edge. The number of flowers produced, as well as fruit set and fruit removal, show the same positive relationship with increasing proximity to forest edges. We further show that individuals are aggregated up to distances of about 10 m. The flower production of neighbouring conspecific individuals within 10 m is negatively related to fruit set whereas the fruit production of neighbours is positively related to fruit removal. Our main conclusion is that the spatial distribution of D. mezereum affects reproductive success and fruit removal, which in turn has the potential to feed back to the spatial distribution pattern. Combining studies of reproduction with spatial analyses is important to advance our understanding of the dynamics of plant populations. 

Place, publisher, year, edition, pages
2023. no 10, article id e03871
Keywords [en]
bird-dispersal, Daphne mezereum, density effects on reproduction, fruit removal, fruit set, hand pollination, insect-pollination, point-pattern analysis, spatial associations
National Category
Botany Ecology
Identifiers
URN: urn:nbn:se:su:diva-220980DOI: 10.1111/njb.03871ISI: 001052667000001Scopus ID: 2-s2.0-85168573565OAI: oai:DiVA.org:su-220980DiVA, id: diva2:1796842
Available from: 2023-09-13 Created: 2023-09-13 Last updated: 2024-01-15Bibliographically approved

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Arnell, MatildaEriksson, OveEhrlén, Johan

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