Jun 7, 2016

Dark diversity illuminates the dim side of conservation and restoration

BioRxiv : the Preprint Server for Biology
Jesper Erenskjold MoeslundJonathan Lenoir

Abstract

1 Dark diversity is a promising concept for prioritizing management efforts as it focuses on missing species, i.e., species present in the regional pool, but locally absent despite suitable environmental conditions. 2 We applied the concept to a massive national plant diversity database (236,923 records from 15,160 surveys involving 564 species) to provide the first geographically comprehensive assessment of dark diversity across a large area (43,000 km2), at a spatial scale (~75 m2) relevant for conservation and restoration planning and across multiple terrestrial habitats, thus maximising its practical application potential. The likelihood for a given plant species to belong to the dark diversity pool was computed and logistically regressed against its ecological preferences (nutrient availability, pH etc.), strategies (competitor, stress tolerance, ruderal), mycorrhizal dependence and infection percentage, seed mass and maximum dispersal distance. 3 Forty-six percent of the species were absent in >95 % of the suitable sites, whereas 7 % of the species were absent in less than 60 % of sites that were deemed suitable. 4 Species that were more likely to belong to the dark diversity tended to depend on mycorrhiza, were mostly ad...Continue Reading

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Mentioned in this Paper

Spatial Distribution
Temporal Lobe/Cortex Disorder
Nutrients
Evaluation
Site
Disease Management
Fungi
Species
Mycorrhizae
Migration, Cell

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