To what extent are bryophytes efficient dispersers?
Autor: | Benjamin Laenen, Jairo Patiño, Alain Vanderpoorten, Olivier J. Hardy, Eva Holá, Beáta Papp, Piotr Górski, Helena Korpelainen, Aurélie Désamoré |
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Přispěvatelé: | Department of Agricultural Sciences, Viikki Plant Science Centre (ViPS), Population Genetics and Biodiversity Group, Plant Production Sciences, University of Helsinki, Department of Agricultural Sciences, European Commission, Ministerio de Economía y Competitividad (España) |
Rok vydání: | 2019 |
Předmět: |
0106 biological sciences
spores Range (biology) long-distance dispersal DIVERSITY Plant Science Biology Long‐distance dispersal 010603 evolutionary biology 01 natural sciences SPATIAL GENETIC-STRUCTURE PHYLOGEOGRAPHY Propagule Geographical distance bryophytes inverse isolation hypothesis POPULATION-GENETICS dispersal 1183 Plant biology microbiology virology Ecology Evolution Behavior and Systematics Isolation by distance isolation-by-distance Genetic diversity Ecology RANGE 1184 Genetics developmental biology physiology SPHAGNUM 15. Life on land THRESHOLDS MOSS SPORES Isolation‐by‐distance FONTANUM Genetic structure Biological dispersal Bryophyte Biologie spatial genetic structure 010606 plant biology & botany |
Zdroj: | Journal of ecology, 107 (5 Digital.CSIC. Repositorio Institucional del CSIC instname |
ISSN: | 1365-2745 0022-0477 |
Popis: | Bryophytes are typically seen as extremely efficient dispersers. Experimental evidence suggests that efficient short-distance dispersal coupled with random long-distance dispersal (LDD) leads to an inverse isolation effect. Under the latter, a higher genetic diversity of colonizing propagules is expected with increasing isolation, counteracting differentiation beyond the range of short-distance dispersal. This expectation is tested from a review of evidence on spatial genetic structure and analyses of isolation-by-distance (IBD) at different scales. A decay of the IBD signal, characterized by non-significant slopes between kinship coefficients and geographic distance was observed beyond 100 m. A second slope shift was observed at distances larger than 1 km, with a proportion of significant slopes in more than one third of the datasets. The decay of the IBD signal beyond 100 m, which reflects efficient LDD, is consistent with the inverse isolation hypothesis. Persistence of a significant IBD signal at medium ranges in one third of the analysed cases suggests, however, that the inverse isolation effect is not a rule in bryophyte spore dispersal. Furthermore, the higher proportion of significant IBD patterns observed at scales over 100 km likely marks the limits of regional dispersal, beyond which an increasingly smaller proportion of spores travel. Synthesis. We discuss the differences between experimental and genetic estimates of spore dispersal and conclude that geographic distance remains a significant proxy of spore colonization rates, with major consequences for our understanding of actual migration capacities in bryophytes, and hence, our capacity to model range shifts in a changing world. SCOPUS: le.j info:eu-repo/semantics/published |
Databáze: | OpenAIRE |
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