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Título

Assessing the vulnerability of habitats through plant rarity patterns in the Pyrenean range

AutorMiranda, Héctor CSIC ORCID; Font, Xavier; Roquet, Cristina CSIC ORCID; Pizarro Gavilán, Manuel CSIC ORCID ; García González, María Begoña CSIC ORCID
Palabras claveAbundance
Endemism
Global change
Phylogenetic diversit
Plant inventories
Rare species
Sensitivity
Fecha de publicaciónabr-2022
EditorJohn Wiley & Sons
CitaciónConservation Science and Practice 4(4): e12649 (2022)
ResumenBiodiversity is being severely affected by global change worldwide, but consequences differ across individual species and environments. Since rarity is a condition associated with vulnerability and extinction risk, it is a concerning factor itself that can also amplify the detrimental impact of global change drivers. Here, we assess differences in vulnerability derived from species rarity across environments in a South European mountain range, the Pyrenees, a complex landscape sheltering more than 3400 vascular plants. We first analyzed patterns of alpha taxonomic (richness) and phylogenetic diversity (standardized phylogenetic diversity, sesPD) from more than 18,000 plant surveys across 14 different habitats to find out which ones shelter the highest diversity. Then, we classified plant species according to four criteria of rarity (Pyrenean endemic, regional geographic range, ecological specialization and local abundance) and estimated their frequency among habitats and their contribution to PD. Generalized linear models were used to compare richness and sesPD among habitats, and the relationship between each diversity metric and rare species proportion was assessed. Grasslands harbor the greatest number of species but are poor in sesPD, while inland surface waters contain fewer species but are the most phylogenetically diverse. Deciduous, evergreen and Mediterranean forests show both high species richness and sesPD. Rare species account for half of the regional species pool, and are more abundant in habitats with fewer species and higher sesPD. Diversity metrics showed opposite tendencies between them and with rare species proportion, emphasizing that they are not interchangeable. Our results highlight the vulnerability of rocky and water-related habitats due to the rarity of the species they shelter, but only the latter match other assessments of habitat vulnerability to global change drivers. The analysis of rarity patterns can guide conservation efforts by identifying priority targets when information about direct threats to habitats is scarce or incomplete.
Versión del editorhttp://dx.doi.org/10.1111/csp2.12649
URIhttp://hdl.handle.net/10261/277964
DOI10.1111/csp2.12649
Identificadoresdoi: 10.1111/csp2.12649
e-issn: 2578-4854
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