Journal ArticleDOI
An evaluation of the robustness of global amphibian range maps
Gentile Francesco Ficetola,Carlo Rondinini,Anna Bonardi,Vineet Katariya,Emilio Padoa-Schioppa,Ariadne Angulo +5 more
TLDR
In this article, the authors assessed the error associated with amphibian range maps by comparing them with point locality data and found that range fit was measured as the proportion of presence records falling within the range polygon(s) for each species.Abstract:
Aim
Maps of species ranges are among the most frequently used distribution data in biodiversity studies. As with any biological data, range maps have some level of measurement error, but this error is rarely quantified. We assessed the error associated with amphibian range maps by comparing them with point locality data.
Location
Global.
Methods
The maps published by the Global Amphibian Assessment were assessed against two data sets of species point localities: the Global Biodiversity Information Facility (GBIF), and a refined data set including recently published, high-quality presence data from both GBIF and other sources. Range fit was measured as the proportion of presence records falling within the range polygon(s) for each species.
Results
Using the high-quality point data provided better fit measures than using the raw GBIF data. Range fit was highly variable among continents, being highest for North American and European species (a fit of 84–94%), and lowest for Asian and South American species (a fit of 57–64%). At the global scale, 95% of amphibian point records were inside the ranges published in maps, or within 31 km of the range edge. However, differences among continents were striking, and more points were found far from range edges for South American and Asian species.
Main conclusions
The Global Amphibian Assessment range maps represent the known distribution of most amphibians well; this study provides measures of accuracy that can be useful for future research using amphibian maps as baseline data. Nevertheless, there is a need for greater investment in the continuous updating and improvement of maps, particularly in the megadiverse areas of tropical Asia and South America.read more
Citations
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Journal ArticleDOI
The interplay of past diversification and evolutionary isolation with present imperilment across the amphibian tree of life
TL;DR: A phylogeny of nearly all extant amphibian species reveals biogeographic patterns of evolutionary distinctiveness and current threat exposure that will inform conservation strategies for these groups, suggesting opportunities for integrating evolutionary position and phylogenetic heritage in addressing the current extinction crisis.
Journal ArticleDOI
Global protected area expansion is compromised by projected land-use and parochialism
Federico Montesino Pouzols,Tuuli Toivonen,Enrico Di Minin,Aija S. Kukkala,Peter Kullberg,Johanna Kuusterä,Joona Lehtomäki,Henrikki Tenkanen,Peter H. Verburg,Atte Moilanen +9 more
TL;DR: It is shown that with a coordinated global protected area network expansion to 17% of terrestrial land, average protection of species ranges and ecoregions could triple and a major efficiency gap between national and global conservation priorities is demonstrated.
Journal ArticleDOI
Estimating species diversity and distribution in the era of Big Data: to what extent can we trust public databases?
Carla Maldonado,Carla Maldonado,Carlos I. Molina,Carlos I. Molina,Alexander Zizka,Claes Persson,Charlotte M. Taylor,Joaquina Albán,Eder Chilquillo,Eder Chilquillo,Nina Rønsted,Alexandre Antonelli +11 more
TL;DR: Open databases and integrative bioinformatic tools allow a rapid approximation of large‐scale patterns of biodiversity across space and altitudinal ranges, and it is found that geographic inaccuracy affects diversity patterns more than taxonomic uncertainties.
Journal ArticleDOI
Identifying species threat hotspots from global supply chains.
Daniel Moran,Keiichiro Kanemoto +1 more
TL;DR: A new approach is developed to link a set of biodiversity footprint accounts to the hotspots of threatened species on the IUCN Red List of Threatened Species, resulting in a map connecting consumption to spatially explicit hotspots driven by production on a global scale.
Journal ArticleDOI
Global determinants of zoogeographical boundaries
TL;DR: It is shown that tectonic movements, sharp changes in climatic conditions and orographic barriers determine extant biogeographical boundaries and lead to abrupt zoogeographical transitions when they act in concert, but their prominence varies across the globe.
References
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Journal ArticleDOI
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TL;DR: This paper describes simultaneous inference procedures in general parametric models, where the experimental questions are specified through a linear combination of elemental model parameters, and extends the canonical theory of multiple comparison procedures in ANOVA models to linear regression problems, generalizedlinear models, linear mixed effects models, the Cox model, robust linear models, etc.
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TL;DR: The R Book is the first comprehensive reference manual for the R language, including practical guidance and full coverage of the graphics facilities, and introduces the advantages of the R environment, detailing its applications in a wide range of disciplines.
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TL;DR: The R Book is the first comprehensive reference manual for the R language, including practical guidance and full coverage of the graphics facilities, and introduces the advantages of the R environment, detailing its applications in a wide range of disciplines.
Journal ArticleDOI
Status and Trends of Amphibian Declines and Extinctions Worldwide
Simon N. Stuart,Janice Chanson,Neil A. Cox,Bruce E. Young,Ana S. L. Rodrigues,Debra L. Fischman,Robert W. Waller +6 more
TL;DR: The first global assessment of amphibians provides new context for the well-publicized phenomenon of amphibian declines and shows declines are nonrandom in terms of species' ecological preferences, geographic ranges, and taxonomic associations and are most prevalent among Neotropical montane, stream-associated species.
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