Is a restricted niche the explanation for species vulnerability? Insights from a large field survey of Astragalus tragacantha L. (Fabaceae)

Teddy Baumberger,Alex Baumel,Pierre-Jean Dumas, Julien Ugo,Laureen Keller,Estelle Dumas,Thierry Tatoni,Lucie Miche,Pascal Mirleau,Isabelle Laffont-Schwob,Laurence Affre

Flora（2021）

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摘要

•In South France, the one remaining population of Astragalus tragacantha is under 5000 individuals.•Fragmentation, rarity of juveniles and foliar necrosis support its endangered status.•Regeneration and dispersal, not niche amplitude, explain A. tragacantha vulnerability.

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关键词

Biodiversity conservation,Demography,Ecological niche,Joint species distribution model,Outlying mean index,Rare plants,Vulnerability

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