Journal
BIOLOGICAL CONSERVATION
Volume 226, Issue -, Pages 288-299Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biocon.2018.08.011
Keywords
Functional distinctiveness; Evolutionary distinctiveness; Coral triangle; Funrar; Biodiversity facet
Funding
- French Fondation pour la Recherche sur la Biodiversite (FRB)
- FRB in the context of the CESAB project 'Causes and consequences of functional rarity from local to global scales' (FREE)
- European Research Council (ERC) Starting Grant Project Ecophysiological and biophysical constraints on domestication of crop plants [ERC-StG-2014-639706-CONSTRAINTS]
- European Commission [H2020-MSCA-IF-2014-657951]
- ENS de Lyon
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Characterizing functional diversity has become central in ecological research and for biodiversity assessment. Understanding the role of species with rare traits, i.e. functionally rare species, in community assembly, ecosystem dynamics and functioning has recently gained momentum. However, functional rarity is still ignored in conservation strategies. Here, we quantified global functional and evolutionary rarity for 2073 species of coral reef fishes and compared the rarity values to IUCN Red List status. Most species were functionally common but geographically rare. However, we found very weak correlation between functional rarity and evolutionary rarity. Functional rarity was highest for species classified as not evaluated or threatened by the IUCN Red List. The location of functional rarity hotspots (Tropical Eastern Pacific) did not match hotspots of species richness and evolutionary distinctiveness (Indo-Australian Archipelago), nor the currently protected areas. We argue that functional rarity should be acknowledged for both species and site prioritization in conservation strategies.
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