IUCN's credibility critically endangered

  title={IUCN's credibility critically endangered},
  author={N. Mrosovsky},
The IUCN is the world's main authority on the conservation status of species, so it is important that its recommendations are based on sound and open science. Recent events suggest that this is not always the case. 
Distribution, ecology and conservation status of the Blue-headed Macaw Primolius couloni
The Blue-headed Macaw is now classified as Endangered in the IUCN Red List, based on an apparent decline and a population estimate of 1,000 to 2,000 birds. Expand
Risk of extinction and categories of endangerment: perspectives from long-lived reptiles
This study compares IUCN predictions with the results of attempts to derive realistic scenarios that could lead to the global extinction of six species of long-lived reptiles, finding that the predictions matched real events reasonably well but still overestimated risks of global extinction. Expand
The dilemma of accuracy in IUCN Red List categories, as exemplified by hawksbill turtles Eretmochelys imbricata
A fundamental weakness is that they respond more to the challenge of reinstating historical abundance than to avoiding global extinction per se, which could be overcome by using the current decline criteria to make an objective first stage determination based solely on decline, thereby overcoming almost all scientific objections. Expand
The value of the IUCN Red List for conservation.
It is highlighted here how the Red List, in conjunction with the comprehensive data compiled to support it and in spite of several important limitations, has become an increasingly powerful tool for conservation planning, management, monitoring and decision making. Expand
Seeing past the red: flawed IUCN global listings for sea turtles
It is suggested that MTSG members desist from using the current Red List criteria to generate implausible global assessments of extinction risk and instead concentrate their efforts on developing more realistic and credible criteria, perhaps for application at the regional level. Expand
Extinction risk assessment of threatened species
It is impractical to avoid all kinds of ecological risk, but the extinction risk of threatened species is usually based on inadequately known factors, and a conservation program for threatened species as soon as possible, even though much more time is needed to investigate the extinction risks of these species. Expand
Hawksbill turtles still endangered
8 Sir — In a recent Commentary article, Nicholas Mrosovsky criticized the International Union for the Conservation of Nature (IUCN) for the lack of documentation supporting the listing of theExpand
Forecasting Extinctions: Uncertainties and Limitations
Extinction forecasting is one of the most important and challenging areas of conservation biology. Overestimates of extinction rates or the extinction risk of a particular species instigateExpand
Assessing changes in the conservation status of threatened Brazilian vertebrates
This work looks at the threat patterns on a temporal scale of Brazilian animal species included in the IUCN Red List, evaluating the hypotheses that directions of changes in red list status can be explained by the increase in scientific knowledge or by actual changes in threat factors. Expand
Setting conservation priorities within monophyletic groups: An integrative approach
A novel approach to calculate a priority index (PI) for species within monophyletic groups, by combining life history traits, extrinsic factors, ecological singularity, and phylogenetic distinctness, which would be especially useful for taxonomically driven conservation action plans. Expand