Are introduced species better dispersers than native species? A global comparative study of seed dispersal distance.

We provide the first global test of the idea that introduced species have greater seed dispersal distances than do native species, using data for 51 introduced and 360 native species from the global literature. Counter to our expectations, there was no significant difference in mean or maximum dispe...

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Autores principales:	Habacuc Flores-Moreno, Fiona J Thomson, David I Warton, Angela T Moles
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9377f441dbbc4978ae3e8c8c5148eda5
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spelling	oai:doaj.org-article:9377f441dbbc4978ae3e8c8c5148eda52021-11-18T07:40:54ZAre introduced species better dispersers than native species? A global comparative study of seed dispersal distance.1932-620310.1371/journal.pone.0068541https://doaj.org/article/9377f441dbbc4978ae3e8c8c5148eda52013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23818991/?tool=EBIhttps://doaj.org/toc/1932-6203We provide the first global test of the idea that introduced species have greater seed dispersal distances than do native species, using data for 51 introduced and 360 native species from the global literature. Counter to our expectations, there was no significant difference in mean or maximum dispersal distance between introduced and native species. Next, we asked whether differences in dispersal distance might have been obscured by differences in seed mass, plant height and dispersal syndrome, all traits that affect dispersal distance and which can differ between native and introduced species. When we included all three variables in the model, there was no clear difference in dispersal distance between introduced and native species. These results remained consistent when we performed analyses including a random effect for site. Analyses also showed that the lack of a significant difference in dispersal distance was not due to differences in biome, taxonomic composition, growth form, nitrogen fixation, our inclusion of non-invasive introduced species, or our exclusion of species with human-assisted dispersal. Thus, if introduced species do have higher spread rates, it seems likely that these are driven by differences in post-dispersal processes such as germination, seedling survival, and survival to reproduction.Habacuc Flores-MorenoFiona J ThomsonDavid I WartonAngela T MolesPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 6, p e68541 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Habacuc Flores-Moreno Fiona J Thomson David I Warton Angela T Moles Are introduced species better dispersers than native species? A global comparative study of seed dispersal distance.
description	We provide the first global test of the idea that introduced species have greater seed dispersal distances than do native species, using data for 51 introduced and 360 native species from the global literature. Counter to our expectations, there was no significant difference in mean or maximum dispersal distance between introduced and native species. Next, we asked whether differences in dispersal distance might have been obscured by differences in seed mass, plant height and dispersal syndrome, all traits that affect dispersal distance and which can differ between native and introduced species. When we included all three variables in the model, there was no clear difference in dispersal distance between introduced and native species. These results remained consistent when we performed analyses including a random effect for site. Analyses also showed that the lack of a significant difference in dispersal distance was not due to differences in biome, taxonomic composition, growth form, nitrogen fixation, our inclusion of non-invasive introduced species, or our exclusion of species with human-assisted dispersal. Thus, if introduced species do have higher spread rates, it seems likely that these are driven by differences in post-dispersal processes such as germination, seedling survival, and survival to reproduction.
format	article
author	Habacuc Flores-Moreno Fiona J Thomson David I Warton Angela T Moles
author_facet	Habacuc Flores-Moreno Fiona J Thomson David I Warton Angela T Moles
author_sort	Habacuc Flores-Moreno
title	Are introduced species better dispersers than native species? A global comparative study of seed dispersal distance.
title_short	Are introduced species better dispersers than native species? A global comparative study of seed dispersal distance.
title_full	Are introduced species better dispersers than native species? A global comparative study of seed dispersal distance.
title_fullStr	Are introduced species better dispersers than native species? A global comparative study of seed dispersal distance.
title_full_unstemmed	Are introduced species better dispersers than native species? A global comparative study of seed dispersal distance.
title_sort	are introduced species better dispersers than native species? a global comparative study of seed dispersal distance.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/9377f441dbbc4978ae3e8c8c5148eda5
work_keys_str_mv	AT habacucfloresmoreno areintroducedspeciesbetterdispersersthannativespeciesaglobalcomparativestudyofseeddispersaldistance AT fionajthomson areintroducedspeciesbetterdispersersthannativespeciesaglobalcomparativestudyofseeddispersaldistance AT davidiwarton areintroducedspeciesbetterdispersersthannativespeciesaglobalcomparativestudyofseeddispersaldistance AT angelatmoles areintroducedspeciesbetterdispersersthannativespeciesaglobalcomparativestudyofseeddispersaldistance
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Are introduced species better dispersers than native species? A global comparative study of seed dispersal distance.

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