%0 Journal Article %J Conserv Biol %D 2014 %T Estimating how many undescribed species have gone extinct. %A Pablo Tedesco %A Rémy Bigorne %A Bogan, Arthur %A Giam, Xingli %A Jézéquel, Céline %A Bernard Hugueny %X

Because both descriptions of species and modern human-driven extinctions started around the same time (i.e., eighteenth century), a logical expectation is that a large proportion of species may have gone extinct without ever having been recorded. Despite this evident and widely recognized assumption, the loss of undescribed species has never been estimated. We quantified this loss for several taxonomic groups and regions for which undescribed species extinctions are likely to have occurred. Across a wide range of taxonomic groups, we applied known extinction rates computed from recorded species losses to assumed exponential decay in the proportion of species remaining undiscovered. Because all previous modeling attempts to project total species richness implicitly assumed that undescribed species extinctions could be neglected, we also evaluated the effect of neglecting them. Finally, because we assumed constant description and extinction probabilities, we applied our model to simulated data that did not conform to this assumption. Actual species losses were severely underestimated by considering only known species extinctions. According to our estimates, the proportion of undiscovered extinct species over all extinctions ranged from 0.15 to 0.59, depending on the taxonomic group and the region considered. This means that recent extinctions may be up to twice as large as the number recorded. When species differed in their extinction or description probabilities, our model underestimated extinctions of undescribed species by up to 20%.

%B Conserv Biol %V 28 %P 1360-70 %8 2014 Oct %G eng %N 5 %R 10.1111/cobi.12285 %0 Journal Article %J Hyrobiologia %D 2014 %T Fish-AMAZBOL: a database on freshwater fishes of the Bolivian Amazon %A Carvajal-Vallejos, F M %A Rémy Bigorne %A Zeballos Fernandez, América J. %A Sarmiento, Jaime %A Barrera Soraya %A Yunoki, T %A Marc Pouilly %A Zubieta José %A De La Barra, Evans %A Michel Jégu %A Maldonado, Mabel %A Van Damme, Paul %A Céspedes, Ricardo %A Thierry Oberdorff %K Amazon River basin %K Bolivia %K Checklist %K Freshwater fishes %K Madera River %K South America %X The Bolivian part of the Amazon Basin contains a mega diverse and well-preserved fish fauna. Since the last decade, this fish fauna has received an increasing attention from scientists and the national authorities as fishes represent one of the most important sources of proteins for local human communities. However, this fish fauna still remains poorly documented. Here, we present a database for fishes from the Bolivian Amazon. To build the database, we conducted an extensive literature survey of native and non-native (exotic) fishes inhabiting all major sub-drainages of the Bolivian Amazon. The database, named Fish-AMAZBOL, contains species lists for 13 Amazonian hydrological units, covering 100% of the Bolivian Amazon and approximately 65% (722,137 km2) of the all territory. Fish-AMAZBOL includes 802 valid species, 12 of them being non-native, that have been checked for systematic reliability and consistency. To put this number in perspective, this represents around 14% of the all Neotropical ichthyofauna and around 6% of all strictly freshwater fishes inhabiting the planet. This database is currently the most comprehensive database of native and non-native fish species richness available so far for the Bolivian Amazon. %B Hyrobiologia %V 732 %P pp. 19-27 %8 07/2014 %G eng %U http://link.springer.com/article/10.1007/s10750-014-1841-5 %N 1 %R 10.1007/s10750-014-1841-5 %0 Book %D 2014 %T Peces de Bolivia/Bolivian Fishes %A Sarmiento, Jaime %A Rémy Bigorne %A Carvajal-Vallejos, F M %A Maldonado, Mabel %A Leciak, Elisabeth %A Thierry Oberdorff %X

Desde la última década, el creciente interés por parte de científicos y autoridades nacionales ha dado lugar a avances considerables en el conocimiento de los peces de Bolivia, llegando a una lista de más de 900 especies. Esta riqueza representa el 7 % de todas las especies de agua dulce descritas en el mundo, haciendo de Bolivia uno de los países con mayor diversidad de peces.

Este libro, primero de su categoría en Bolivia, presenta una compilación de informaciones sobre una centena de especies de peces, entre las más conocidas o notables, incluyendo fotos, informaciones sobre sus rasgos biológicos y mapas de distribución.

Está dirigido a quienes quieren descubrir o conocer más sobre los peces de Bolivia y la biodiversidad en general. Esperamos que el presente trabajo resalte la necesidad de preservar la singularidad que representan las aguas bolivianas con su diversa fauna, y que ayude al pueblo boliviano a conocer mejor y valorar su patrimonio natural.

 

Since the last decade, an increasing attention from scientists and national authorities has led to significant advances in our knowledge of Bolivian fishes. To date, more than 900 fish species are known to inhabit Bolivian waters. This richness represents 7 % of all freshwater fish species described worldwide, making Bolivia one of the most species rich countries.

This book, first of its kind for Bolivia, presents a compilation of information on the most well-known species, including pictures, details on life history traits and maps of distribution. We hope this book will participate in demonstrating the need to preserve the uniqueness that represents the Bolivian waters and their diverse fish fauna, and helping Bolivian people in discovering their natural heritage.

%I Plural editores %C La Paz, Bolivia %P 211 pages %G eng