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The conservation status of the world’s reptiles
Böhm, Monika ; Collen, Ben (coaut.) ; Baillie, Jonathan E. M. (coaut.) ; Bowles, Philip (coaut.) ; Chanson, Janice (coaut.) ; Cox, Neil (coaut.) ; Hammerson, Geoffrey (coaut.) ; Hoffmann, Michael (coaut.) ; Livingstone, Suzanne R. (coaut.) ; Ram, Mala (coaut.) ; Rhodin, Anders G. J. (coaut.) ; Stuart, Simon N. (coaut.) ; van Dijk, Peter Paul (coaut.) ; Young, Bruce E. (coaut.) ; Afuang, Leticia E. (coaut.) ; Aghasyan, Aram (coaut.) ; García, Andrés (coaut.) ; Aguilar, César (coaut.) ; Ajtic, Rastko (coaut.) ; Akarsu, Ferdi (coaut.) ; Alencar, Laura R.V. (coaut.) ; Allison, Allen (coaut.) ; Ananjeva, Natalia (coaut.) ; Anderson, Steve (coaut.) ; Andrén, Claes (coaut.) ; Ariano Sánchez, Daniel (coaut.) ; Arredondo, Juan Camilo (coaut.) ; Auliya, Mark (coaut.) ; Austin, Christopher C. (coaut.) ; Avci, Aziz (coaut.) ; Baker, Patrick J. (coaut.) ; Barreto Lima, André F. (coaut.) ; Barrio Amorós, César L. (coaut.) ; Basu, Dhruvayothi (coaut.) ; Bates, Michael F. (coaut.) ; Batistella, Alexandre (coaut.) ; Bauer, Aaron (coaut.) ; Bennett, Daniel (coaut.) ; Böhme, Wolfgang (coaut.) ; Broadley, Don (coaut.) ; Brown, Rafe (coaut.) ; Burgess, Joseph (coaut.) ; Captain, Ashok (coaut.) ; Carreira, Santiago (coaut.) ; Castañeda, Maria del Rosario (coaut.) ; Castro, Fernando (coaut.) ; Catenazzi, Alessandro (coaut.) ; Cedeño-Vázquez, J.R. (coaut.) ; Chapple, David G. (coaut.) ; Cheylan, Marc (coaut.) ; Cisneros Heredia, Diego F. (coaut.) ; Cogalniceanu, Dan (coaut.) ; Cogger, Hal (coaut.) ; Corti, Claudia (coaut.) ; Costa, Gabriel C. (coaut.) ; Couper, Patrick J. (coaut.) ; Courtney, Tony (coaut.) ; Crnobrnja Isailovic, Jelka (coaut.) ; Crochet, Pierre André (coaut.) ; Crother, Brian (coaut.) ; Cruz, Felix (coaut.) ; Daltry, Jennifer C. (coaut.) ; Ranjit Daniels, R. J. (coaut.) ; Das, Indraneil (coaut.) ; Silva, Anslemde (coaut.) ; Diesmos, Arvin C. (coaut.) ; Dirksen, Lutz (coaut.) ; Doan, Tiffany M. (coaut.) ; Dodd Jr., C. Kenneth (coaut.) ; Doody, J. Sean (coaut.) ; Dorcas, Michael E. (coaut.) ; Barros Filho, Jose Duarte de (coaut.) ; Egan, Vincent T. (coaut.) ; El Mouden, El Hassan (coaut.) ; Embert, Dirk (coaut.) ; Espinoza, Robert E. (coaut.) ; Fallabrino, Alejandro (coaut.) ; Feng, Xie (coaut.) ; Feng, Zhao Jun (coaut.) ; Fitzgerald, Lee (coaut.) ; Flores Villela, Oscar Alberto (coaut.) ; França, Frederico G. R. (coaut.) ; Frost, Darrell (coaut.) ; Gadsden, Hector (coaut.) ; Gamble, Tony (coaut.) ; Ganesh, S. R. (coaut.) ; Garcia, Miguel A. (coaut.) ; García Pérez, Juan E. (coaut.) ; Gatus, Joey (coaut.) ; Gaulke, Maren (coaut.) ; Geniez, Philippe (coaut.) ; Georges, Arthur (coaut.) ; Gerlach, Justin (coaut.) ; Goldberg, Stephen (coaut.) ; T. Gonzalez, Juan Carlos (coaut.) ; Gower, David J. (coaut.) ; Grant, Tandora (coaut.) ; Greenbaum, Eli (coaut.) ; Grieco, Cristina (coaut.) ; Guo, Peng (coaut.) ; Hamilton, Alison M. (coaut.) ; Hare, Kelly (coaut.) ; Blair Hedges, S. (coaut.) ; Heideman, Neil (coaut.) ; Hilton Taylor, Craig (coaut.) ; Hitchmough, Rod (coaut.) ; Hollingsworth, Bradford (coaut.) ; Hutchinson, Mark (coaut.) ; Ineich, Ivan (coaut.) ; Iverson, John (coaut.) ; Jaksic, Fabian M. (coaut.) ; Jenkins, Richard (coaut.) ; Joger, Ulrich (coaut.) ; Jose, Reizl (coaut.) ; Kaska, Yakup (coaut.) ; Kaya, Uğur (coaut.) ; Scott Keogh, J. (coaut.) ; Köhler, Gunther (coaut.) ; Kuchling, Gerald (coaut.) ; Kumlutas, Yusuf (coaut.) ; Kwet, Axel (coaut.) ; La Marca, Enrique (coaut.) ; Lamar, William (coaut.) ; Lane, Amanda (coaut.) ; Lardner, Bjorn (coaut.) ; Latta, Craig (coaut.) ; Latta, Gabrielle (coaut.) ; Lau, Michael (coaut.) ; Lavin, Pablo (coaut.) ; Lawson, Dwight (coaut.) ; LeBreton, Matthew (coaut.) ; Lehr, Edgar (coaut.) ; Limpus, Duncan (coaut.) ; Lipczynski, Nicola (coaut.) ; Lobo, Aaron S. (coaut.) ; López Luna, Marco Antonio (coaut.) ; Luiselli, Luca (coaut.) ; Lukoschek, Vimoksalehi (coaut.) ; Lundberg, Mikael (coaut.) ; Lymberakis, Petros (coaut.) ; Macey, Robert (coaut.) ; Magnusson, William E. (coaut.) ; Mahler, D. Luke (coaut.) ; Malhotra, Anita (coaut.) ; Mariaux, Jean (coaut.) ; Maritz, Bryan (coaut.) ; V. Marques, Otavio A. (coaut.) ; Márquez, Rafael (coaut.) ; Martins, Marcio (coaut.) ; Masterson, Gavin (coaut.) ; Mateo, José A. (coaut.) ; Mathew, Rosamma (coaut.) ; Mathews, Nixon (coaut.) ; Mayer, Gregory (coaut.) ; McCranie, James R. (coaut.) ; Measey, G. John (coaut.) ; Mendoza Quijano, Fernando (coaut.) ; Menegon, Michele (coaut.) ; Métrailler, Sébastien (coaut.) ; Milton, David A. (coaut.) ; Montgomery, Chad (coaut.) ; A. Morato, Sérgio A. (coaut.) ; Mott, Tami (coaut.) ; Muñoz Alonso, Luis Antonio (coaut.) ; Murphy, John (coaut.) ; Nguyen, Truong Q. (coaut.) ; Nilson, Göran (coaut.) ; Nogueira, Cristiano (coaut.) ; Núñez, Herman (coaut.) ; Orlov, Nikolai (coaut.) ; Ota, Hidetoshi (coaut.) ; Ottenwalder, José (coaut.) ; Papenfuss, Theodore (coaut.) ; Pasachnik, Stesha (coaut.) ; Passos, Paulo (coaut.) ; G. Pauwels, Olivier S. (coaut.) ; Pérez Buitrago, Néstor (coaut.) ; Pérez Mellado, Valentín (coaut.) ; Pianka, Eric R. (coaut.) ; Pleguezuelos, Juan (coaut.) ; Pollock, Caroline (coaut.) ; Ponce Campos, Paulino (coaut.) ; Powell, Robert (coaut.) (1948-) ; Pupin, Fabio (coaut.) ; Quintero Díaz, Gustavo Ernesto (coaut.) ; Radder, Raju (coaut.) ; Ramer, Jan (coaut.) ; Rasmussen, Arne R. (coaut.) ; Raxworthy, Chris (coaut.) ; Reynolds, Robert (coaut.) ; Richman, Nadia (coaut.) ; Rico, Edmund L. (coaut.) ; Riservato, Elisa (coaut.) ; Rivas, Gilson (coaut.) ; da Rocha, Pedro L.B. (coaut.) ; Rödel, Mark Oliver (coaut.) ; Rodríguez Schettino, Lourdes (coaut.) ; Roosenburg, Willem M. (coaut.) ; Ross, James Perran (coaut.) ; Sadek, Riyad (coaut.) ; Sanders, Kate (coaut.) ; Santos Barrera, Georgina (coaut.) ; Schleich, Hermann H. (coaut.) ; Schmidt, Benedikt R. (coaut.) ; Schmitz, Andreas (coaut.) ; Sharifi, Mozafar (coaut.) ; Shea, Glenn (coaut.) ; Shi, Hai Tao (coaut.) ; Shine, Richard (coaut.) ; Sindaco, Roberto (coaut.) ; Slimani, Tahar (coaut.) ; Somaweera, Ruchira (coaut.) ; Spawls, Steve (coaut.) ; Stafford, Peter (coaut.) ; Stuebing, Rob (coaut.) ; Sweet, Sam (coaut.) ; Sy, Emerson (coaut.) ; Temple, Helen J. (coaut.) ; Tognelli, Marcelo F. (coaut.) ; Tolley, Krystal (coaut.) ; Tolson, Peter J. (coaut.) ; Tuniyev, Boris (coaut.) ; Tuniyev, Sako (coaut.) ; Üzüm, Nazan (coaut.) ; van Buurt, Gerard (coaut.) ; Van Sluys, Monique (coaut.) ; Velasco, Alvaro (coaut.) ; Vences, Miguel (coaut.) ; Vesely, Milan (coaut.) ; Vinke, Sabine (coaut.) ; Vinke, Thomas (coaut.) ; Vogel, Gernot (coaut.) ; Vogrin, Milan (coaut.) ; Vogt, Richard C. (coaut.) ; Wearn, Oliver R. (coaut.) ; Werner, Yehudah L. (coaut.) ; Whiting, Martin J. (coaut.) ; Wiewandt, Thomas (coaut.) ; Wilkinson, John (coaut.) ; Wilson, Byron (coaut.) ; Wren, Sally (coaut.) ; Zamin, Tara (coaut.) ; Zhou, Kaiya (coaut.) ; Zug, George (coaut.) ;
Contenido en: Biological Conservation Vol. 157, (January 2013), p. 372–385 ISSN: 0006-3207
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
37364-20 (Disponible)
Disponibles para prestamo: 1
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

Effective and targeted conservation action requires detailed information about species, their distribution, systematics and ecology as well as the distribution of threat processes which affect them. Knowledge of reptilian diversity remains surprisingly disparate, and innovative means of gaining rapid insight into the status of reptiles are needed in order to highlight urgent conservation cases and inform environmental policy with appropriate biodiversity information in a timely manner. We present the first ever global analysis of extinction risk in reptiles, based on a random representative sample of 1500 species (16% of all currently known species). To our knowledge, our results provide the first analysis of the global conservation status and distribution patterns of reptiles and the threats affecting them, highlighting conservation priorities and knowledge gaps which need to be addressed urgently to ensure the continued survival of the world’s reptiles. Nearly one in five reptilian species are threatened with extinction, with another one in five species classed as Data Deficient. The proportion of threatened reptile species is highest in freshwater environments, tropical regions and on oceanic islands, while data deficiency was highest in tropical areas, such as Central Africa and Southeast Asia, and among fossorial reptiles. Our results emphasise the need for research attention to be focussed on tropical areas which are experiencing the most dramatic rates of habitat loss, on fossorial reptiles for which there is a chronic lack of data, and on certain taxa such as snakes for which extinction risk may currently be underestimated due to lack of population information. Conservation actions specifically need to mitigate the effects of human-induced habitat loss and harvesting, which are the predominant threats to reptiles.


Resumen en español

A major focus of geographical ecology and macroecology is to understand the causes of spatially structured ecological patterns. However, achieving this understanding can be complicated when using multiple regression, because the relative importance of explanatory variables, as measured by regression coefficients, can shift depending on whether spatially explicit or non-spatial modeling is used. However, the extent to which coefficients may shift and why shifts occur are unclear. Here, we analyze the relationship between environmental predictors and the geographical distribution of species richness, body size, range size and abundance in 97 multi-factorial data sets. Our goal was to compare standardized partial regression coefficients of non-spatial ordinary least squares regressions (i.e. models fitted using ordinary least squares without taking autocorrelation into account; ‘‘OLS models’’ hereafter) and eight spatial methods to evaluate the frequency of coefficient shifts and identify characteristics of data that might predict when shifts are likely. We generated three metrics of coefficient shifts and eight characteristics of the data sets as predictors of shifts.

Typical of ecological data, spatial autocorrelation in the residuals of OLS models was found in most data sets. The spatial models varied in the extent to which they minimized residual spatial autocorrelation. Patterns of coefficient shifts also varied among methods and datasets, although the magnitudes of shifts tended to be small in all cases. We were unable to identify strong predictors of shifts, including the levels of autocorrelation in either explanatory variables or model residuals. Thus, changes in coefficients between spatial and non-spatial methods depend on the method used and are largely idiosyncratic, making it difficult to predict when or why shifts occur. We conclude that the ecological importance of regression coefficients cannot be evaluated with confidence irrespective of whether spatially explicit modelling is used or not. Researchers may have little choice but to be more explicit about the uncertainty of models and more cautious in their interpretation.


3.
Libro
A revised checklist with distribution maps of the turtles of the world / John B. Iverson; Earlham College
Iverson, John B. ; College, Earlham ;
The United States of America : s. n. , 1992
Clasificación: C/598.13 / I9
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
ECO030005916 (Disponible)
Disponibles para prestamo: 1