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Landscape-scale range filling and dispersal limitation of woody plants
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
Number of Authors: 22022 (English)In: Journal of Biogeography, ISSN 0305-0270, E-ISSN 1365-2699, Vol. 49, no 11, p. 2028-2036Article in journal (Refereed) Published
Abstract [en]

Aim: The extent to which species fill their predicted current ranges and the underlying process of dispersal limitation have implications for species' abilities to track climate change. Range filling is intimately related to spatial scale, yet range filling estimates at high resolutions are largely lacking. In this study, we aim to estimate range filling and dispersal limitation at a high resolution for woody plants with different dispersal systems and habitat affinities.

Location: Sweden.

Taxon: All genera of woody plants (trees and shrubs).

Methods: We estimated landscape-scale range filling for 64 species. Two main dispersal systems, vertebrate dispersal and abiotic dispersal, occurred among these species. Range filling was estimated as the realized range divided by the potential range, that is, the occupied proportion of a species' modelled range, at a 1 km2 resolution. We estimated potential ranges using species distribution models and realized ranges from presence records. To increase the likelihood that absences represented true absences the estimations were restricted to areas with high sampling effort. We tested the effects of dispersal system on range filling, controlling for species' habitat affinities.

Results: Vertebrate-dispersed woody species had significantly lower landscape-scale range filling than species with abiotic dispersal. Range filling was also linked to habitat affinity. Species associated with intermediate levels of light and moisture had the highest range filling estimates.

Main conclusions: Landscape-scale range filling of woody species is linked to their dispersal traits. When controlling for habitat affinity, our result suggests that dispersal limitation partly explains the lower occupancy in suitable habitat found for vertebrate-dispersed plants. Given that vertebrate-dispersed species fail to reach suitable habitats at this scale, they are less likely to track changes in climate than woody plants with abiotic dispersal.

Place, publisher, year, edition, pages
2022. Vol. 49, no 11, p. 2028-2036
Keywords [en]
biogeography, dispersal limitation, dispersal systems, niche modelling, range filling, species distribution modelling, vertebrate-dispersed, woody plants
National Category
Earth and Related Environmental Sciences Biological Sciences
Identifiers
URN: urn:nbn:se:su:diva-210346DOI: 10.1111/jbi.14485ISI: 000859443300001Scopus ID: 2-s2.0-85138701753OAI: oai:DiVA.org:su-210346DiVA, id: diva2:1703196
Available from: 2022-10-12 Created: 2022-10-12 Last updated: 2023-10-24Bibliographically approved

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Arnell, MatildaEriksson, Ove

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