Author
A. Townsend Peterson
Other affiliations: California Academy of Sciences, University of Chicago, Field Museum of Natural History ...read more
Bio: A. Townsend Peterson is an academic researcher from University of Kansas. The author has contributed to research in topics: Environmental niche modelling & Ecological niche. The author has an hindex of 91, co-authored 521 publications receiving 51524 citations. Previous affiliations of A. Townsend Peterson include California Academy of Sciences & University of Chicago.
Papers published on a yearly basis
Papers
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01 Jan 2003
TL;DR: The recently declared Reserva de Biosfera del Chaco, if effectively imple- menta and protected, will represent an important step towards the conservation of the northern chaco avifauna.
Abstract: Resumen. - Avifauna chaquena del norte de Paraguay. - Inventarios llevaros a acabo en cinco sitios en el chaco del norte de Paraguay indicaron la presencia de 233 especies de aves, incluyendo a Mosqueta Boreal (Empidonax alnorum), la cual se registra por primera vez en el pais. Se documentaron por primera vez tres especies por medio de especimenes (Chiripepe de Cabeza Gris (yrrhura molinae), Pijui Ocraceo (Poe- cilurus scutatus) y Batara Boliviano (Thamnophilus sticturus)) y una por grabaciones de cantos (Piojito Trinador ³Serpophaga griseiceps)). Se registraron dos especies nuevas para el chaco de Paraguay, y 22 especies nuevas para las zonas del Alto Chaco o Matogrosense (sensu Hayes 1995). Comparaciones preliminares entre sitios, junto con informacion adicional publicada, apoyan a la idea de que el recambio de especies de sitio a sitio es considerable en el bioma del chaco. La recien declarada Reserva de Biosfera del Chaco, si se imple- menta y se protege efectivamente, representa un paso importante hacia la conservacion de la avifauna del norte del chaco. Abstract. - Surveys at five sites in the chaco biome in northern Paraguay revealed the presence of 233 bird species including one species, Alder Flycatcher (Empidonax alnorum) new for the country. Four species were documented for the first time with specimens (Green-cheeked Parakeet (Pyrrhura molinae), Ochre-cheeked Spinetail (Poecilurus scutatus), and Bolivian Slaty-Antshrike (Thamnophilus sticturus)) or tape-recordings (Gray- crowned Tyrannulet (Serpophaga griseiceps)). Two additional species were new for the Paraguayan chaco and 22 species for the regions of Alto Chaco or Matogrosense (sensu Hayes 1995). Preliminary comparisons among sites, along with other published information, support the idea that site-to-site turnover of species is high in the chaco biome. The recently declared Reserva de Biosfera del Chaco, if effectively imple- mented and protected, will represent an important step towards the conservation of the northern chaco avifauna. Accepted 3 October 2002.
14 citations
TL;DR: Central-eastern China appears to represent an area of high risk for H7N9 spread, but suitable areas were distributed more spottily in the north and only along the coast in the south; highly suitable areas also were identified in western Taiwan.
Abstract: No current funding sources were specifically designate for this study, however, partial support was from the talent introduction program award to GZ in Tianjin Normal University (5RL127). No additional funding was received for this study. The funder had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
14 citations
TL;DR: Development of repeated surveys for many sites across Mexico, and particularly for sites for which historical surveys document their avifaunas prior to major climate change processes, would pay rich rewards in information about distributional dynamics of Mexican birds.
Abstract: BACKGROUND Faunal change is a basic and fundamental element in ecology, biogeography, and conservation biology, yet vanishingly few detailed studies have documented such changes rigorously over decadal time scales. This study responds to that gap in knowledge, providing a detailed analysis of Digital Accessible Knowledge of the birds of Mexico, designed to marshal DAK to identify sites that were sampled and inventoried rigorously prior to the beginning of major global climate change (1980). METHODS We accumulated DAK records for Mexican birds from all relevant online biodiversity data portals. After extensive cleaning steps, we calculated completeness indices for each 0.05° pixel across the country; we also detected 'hotspots' of sampling, and calculated completeness indices for these broader areas as well. Sites were designated as well-sampled if they had completeness indices above 80% and >200 associated DAK records. RESULTS We identified 100 individual pixels and 20 broader 'hotspots' of sampling that were demonstrably well-inventoried prior to 1980. These sites are catalogued and documented to promote and enable resurvey efforts that can document events of avifaunal change (and non-change) across the country on decadal time scales. CONCLUSIONS Development of repeated surveys for many sites across Mexico, and particularly for sites for which historical surveys document their avifaunas prior to major climate change processes, would pay rich rewards in information about distributional dynamics of Mexican birds.
13 citations
TL;DR: In this article, the authors used known occurrences based on natural history museum voucher specimens for three genera of African forest squirrels to develop a detailed, fine-scale distributional under standing of each species.
Abstract: Known occurrences based on natural history museum voucher specimens for three genera of African forest squirrels were used to develop a detailed, fine-scale distributional under- standing of each species. Considerations of species’ autecology, effects of land use change, and effects of global climate change were all included in our analyses, and negative effects of land use and climate change on species’ distributional areas were roughly equivalent across the species surveyed. We describe geographic patterns of distribution and endemism, and identify areas of potential occurrence of unknown species. Comparing with coarse grid-based approaches currently in vogue in African biodiversity conservation efforts, we suggest that the point-based method offers significant advantages in fine resolution and avoiding loss of information, and yet are feasibly implemented for many vertebrate groups.
13 citations
TL;DR: Parsimony ANALYSIS of Endemism (PAE) has become a popular ANALYTICAL APPROACH in EFFORTS to MAP the BIOGEOGRAPHY of MEXICAN BIOTAS.
Abstract: PARSIMONY ANALYSIS OF ENDEMISM (PAE) HAS BECOME A POPULAR ANALYTICAL APPROACH IN EFFORTS TO MAP THE BIOGEOGRAPHY OF MEXICAN BIOTAS. ALTHOUGH ATTRACTIVE, THE TECHNIQUE HAS SERIOUS DRAWBACKS THAT MAKE CORRECT INFERENCES OF BIOGEOGRAPHIC HISTORY UNLIKELY, WHICH HAS BEEN NOTED AMPLY IN THE BROADER LITERATURE
13 citations
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TL;DR: Preface to the Princeton Landmarks in Biology Edition vii Preface xi Symbols used xiii 1.
Abstract: Preface to the Princeton Landmarks in Biology Edition vii Preface xi Symbols Used xiii 1. The Importance of Islands 3 2. Area and Number of Speicies 8 3. Further Explanations of the Area-Diversity Pattern 19 4. The Strategy of Colonization 68 5. Invasibility and the Variable Niche 94 6. Stepping Stones and Biotic Exchange 123 7. Evolutionary Changes Following Colonization 145 8. Prospect 181 Glossary 185 References 193 Index 201
14,171 citations
TL;DR: In this paper, the use of the maximum entropy method (Maxent) for modeling species geographic distributions with presence-only data was introduced, which is a general-purpose machine learning method with a simple and precise mathematical formulation.
13,120 citations
Journal Article•
TL;DR: It is suggested that the natural selection against large insertion/deletion is so weak that a large amount of variation is maintained in a population.
11,521 citations
TL;DR: The Bayesian Evolutionary Analysis by Sampling Trees (BEAST) software package version 1.7 is presented, which implements a family of Markov chain Monte Carlo algorithms for Bayesian phylogenetic inference, divergence time dating, coalescent analysis, phylogeography and related molecular evolutionary analyses.
Abstract: Computational evolutionary biology, statistical phylogenetics and coalescent-based population genetics are becoming increasingly central to the analysis and understanding of molecular sequence data. We present the Bayesian Evolutionary Analysis by Sampling Trees (BEAST) software package version 1.7, which implements a family of Markov chain Monte Carlo (MCMC) algorithms for Bayesian phylogenetic inference, divergence time dating, coalescent analysis, phylogeography and related molecular evolutionary analyses. This package includes an enhanced graphical user interface program called Bayesian Evolutionary Analysis Utility (BEAUti) that enables access to advanced models for molecular sequence and phenotypic trait evolution that were previously available to developers only. The package also provides new tools for visualizing and summarizing multispecies coalescent and phylogeographic analyses. BEAUti and BEAST 1.7 are open source under the GNU lesser general public license and available at http://beast-mcmc.googlecode.com and http://beast.bio.ed.ac.uk
9,055 citations
TL;DR: Range-restricted species, particularly polar and mountaintop species, show severe range contractions and have been the first groups in which entire species have gone extinct due to recent climate change.
Abstract: Ecological changes in the phenology and distribution of plants and animals are occurring in all well-studied marine, freshwater, and terrestrial groups These observed changes are heavily biased in the directions predicted from global warming and have been linked to local or regional climate change through correlations between climate and biological variation, field and laboratory experiments, and physiological research Range-restricted species, particularly polar and mountaintop species, show severe range contractions and have been the first groups in which entire species have gone extinct due to recent climate change Tropical coral reefs and amphibians have been most negatively affected Predator-prey and plant-insect interactions have been disrupted when interacting species have responded differently to warming Evolutionary adaptations to warmer conditions have occurred in the interiors of species’ ranges, and resource use and dispersal have evolved rapidly at expanding range margins Observed genetic shifts modulate local effects of climate change, but there is little evidence that they will mitigate negative effects at the species level
7,657 citations