File:Number of first records of established alien species per region 14435-f2.jpg
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Summary[edit]
| Description |
English: Number of first records of established alien species per region (mainlands and islands) for major taxonomic groups.
Global temporal trends in first record rates (dots) for all species (a) and taxonomic groups (b–q) with the total number of established alien species during the respective time periods given in parentheses. Data after 2000 (grey dots) are incomplete because of the delay between sampling and publication, and therefore not included in the analysis. As first record rates were recorded on a regional scale, species may be included multiple times in one plot. (a) First record rates are the number of first records per year during 1500–2014. (b–q) First record rates constitute the number of first records per 5 years during 1800–2014 for various taxonomic groups. The trend is indicated by a running median with 25-year moving window (red line). For visualization, 50-year periods are distinguished by white/grey shading.Français : Nombre de premiers enregistrements d'espèces exotiques établies par région (continent et îles) pour les principaux groupes taxonomiques.
Tendances temporelles mondiales des premiers enregistrements (points) pour toutes les espèces (a) et taxonomiques (b-q) avec le nombre total d'espèces exotiques établies pendant les périodes respectives indiquées entre parenthèses. Les données acquises après l'an 2000 (points gris) sont incomplètes en raison du délai entre l'échantillonnage et la publication ; elles ne sont pour cette raison pas incluses dans l'analyse. Comme les premiers enregistrements ont été faits à l'échelle régionale, les espèces peuvent être incluses plusieurs fois dans une parcelle. Pour la visualisation, les demi-siècles se distinguent par l'alternance de bandes blanches / grises sur le fond du graphique. |
| Date | |
| Source | http://www.nature.com/articles/ncomms14435#ref40 No saturation in the accumulation of alien species worldwide , in Nature Communications 8, Article number: 14435 (2017) doi:10.1038/ncomms14435, Published online ; 15 February 2017 ("This work is licensed under a Creative Commons Attribution 4.0 International License") |
| Author | Hanno Seebens & al. |
source : http://www.nature.com/articles/ncomms14435/figures/2 Nature Communications ISSN 2041-1723
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