Dissecting the null model for biological invasions: A meta-analysis of the propagule pressure effect.
A consistent determinant of the establishment success of alien species appears to be the number of individuals that are introduced to found a population (propagule pressure), yet variation in the form of this relationship has been largely unexplored. Here, we present the first quantitative systemati...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2018-04-01
|
| Series: | PLoS Biology |
| Online Access: | http://europepmc.org/articles/PMC5933808?pdf=render |
| _version_ | 1819156402797543424 |
|---|---|
| author | Phillip Cassey Steven Delean Julie L Lockwood Jason S Sadowski Tim M Blackburn |
| author_facet | Phillip Cassey Steven Delean Julie L Lockwood Jason S Sadowski Tim M Blackburn |
| author_sort | Phillip Cassey |
| collection | DOAJ |
| description | A consistent determinant of the establishment success of alien species appears to be the number of individuals that are introduced to found a population (propagule pressure), yet variation in the form of this relationship has been largely unexplored. Here, we present the first quantitative systematic review of this form, using Bayesian meta-analytical methods. The relationship between propagule pressure and establishment success has been evaluated for a broad range of taxa and life histories, including invertebrates, herbaceous plants and long-lived trees, and terrestrial and aquatic vertebrates. We found a positive mean effect of propagule pressure on establishment success to be a feature of every hypothesis we tested. However, establishment success most critically depended on propagule pressures in the range of 10-100 individuals. Heterogeneity in effect size was associated primarily with different analytical approaches, with some evidence of larger effect sizes in animal rather than plant introductions. Conversely, no variation was accounted for in any analysis by the scale of study (field to global) or methodology (observational, experimental, or proxy) used. Our analyses reveal remarkable consistency in the form of the relationship between propagule pressure and alien population establishment success. |
| first_indexed | 2024-12-22T15:52:18Z |
| format | Article |
| id | doaj.art-89adab2981d8483caa00e505d1946a12 |
| institution | Directory Open Access Journal |
| issn | 1544-9173 1545-7885 |
| language | English |
| last_indexed | 2024-12-22T15:52:18Z |
| publishDate | 2018-04-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Biology |
| spelling | doaj.art-89adab2981d8483caa00e505d1946a122022-12-21T18:20:52ZengPublic Library of Science (PLoS)PLoS Biology1544-91731545-78852018-04-01164e200598710.1371/journal.pbio.2005987Dissecting the null model for biological invasions: A meta-analysis of the propagule pressure effect.Phillip CasseySteven DeleanJulie L LockwoodJason S SadowskiTim M BlackburnA consistent determinant of the establishment success of alien species appears to be the number of individuals that are introduced to found a population (propagule pressure), yet variation in the form of this relationship has been largely unexplored. Here, we present the first quantitative systematic review of this form, using Bayesian meta-analytical methods. The relationship between propagule pressure and establishment success has been evaluated for a broad range of taxa and life histories, including invertebrates, herbaceous plants and long-lived trees, and terrestrial and aquatic vertebrates. We found a positive mean effect of propagule pressure on establishment success to be a feature of every hypothesis we tested. However, establishment success most critically depended on propagule pressures in the range of 10-100 individuals. Heterogeneity in effect size was associated primarily with different analytical approaches, with some evidence of larger effect sizes in animal rather than plant introductions. Conversely, no variation was accounted for in any analysis by the scale of study (field to global) or methodology (observational, experimental, or proxy) used. Our analyses reveal remarkable consistency in the form of the relationship between propagule pressure and alien population establishment success.http://europepmc.org/articles/PMC5933808?pdf=render |
| spellingShingle | Phillip Cassey Steven Delean Julie L Lockwood Jason S Sadowski Tim M Blackburn Dissecting the null model for biological invasions: A meta-analysis of the propagule pressure effect. PLoS Biology |
| title | Dissecting the null model for biological invasions: A meta-analysis of the propagule pressure effect. |
| title_full | Dissecting the null model for biological invasions: A meta-analysis of the propagule pressure effect. |
| title_fullStr | Dissecting the null model for biological invasions: A meta-analysis of the propagule pressure effect. |
| title_full_unstemmed | Dissecting the null model for biological invasions: A meta-analysis of the propagule pressure effect. |
| title_short | Dissecting the null model for biological invasions: A meta-analysis of the propagule pressure effect. |
| title_sort | dissecting the null model for biological invasions a meta analysis of the propagule pressure effect |
| url | http://europepmc.org/articles/PMC5933808?pdf=render |
| work_keys_str_mv | AT phillipcassey dissectingthenullmodelforbiologicalinvasionsametaanalysisofthepropagulepressureeffect AT stevendelean dissectingthenullmodelforbiologicalinvasionsametaanalysisofthepropagulepressureeffect AT juliellockwood dissectingthenullmodelforbiologicalinvasionsametaanalysisofthepropagulepressureeffect AT jasonssadowski dissectingthenullmodelforbiologicalinvasionsametaanalysisofthepropagulepressureeffect AT timmblackburn dissectingthenullmodelforbiologicalinvasionsametaanalysisofthepropagulepressureeffect |