Kayce Anderson

Followers

Following

Public Views

Ricardo M O Campos

Faculdade de Ciências Sociais e Humanas - Universidade Nova de Lisboa

Shilpa Phadke

Tata Institute of Social Sciences

Geoffrey Kron

University of Victoria

Peta Hinton

ICI Berlin Institute for Cultural Inquiry

Jan Blommaert

Tilburg University

Thomas Marois

McMaster University

Heather Switzer

Arizona State University

Michael H. Nelson

My Home

Lorenzo Bernini

Università di Verona

anna szirmai

Central European Research Institute for Art History

Interests

Uploads

Papers by Kayce Anderson

Polytypic species of pronophiline butterflies in the subpáramo and páramo of the Venezuelan Cordillera de Mérida I: Distribution patterns and affinities of Lymanopoda marianna Staudinger based on morphological and molecular data (Lepidoptera: Nymphalidae: Satyrinae)

Genus. International Journal of Invertebrate Taxonomy, 2009

Supporting Information (SI) for Gill et al. 2016 manuscript

The utility of repeated presence data as a surrogate for counts: a case study using butterflies

Journal of Insect Conservation, Nov 22, 2013

Your article is protected by copyright and all rights are held exclusively by Springer Science +B... more Your article is protected by copyright and all rights are held exclusively by Springer Science +Business Media Dordrecht. This e-offprint is for personal use only and shall not be selfarchived in electronic repositories. If you wish to self-archive your article, please use the accepted manuscript version for posting on your own website. You may further deposit the accepted manuscript version in any repository, provided it is only made publicly available 12 months after official publication or later and provided acknowledgement is given to the original source of publication and a link is inserted to the published article on Springer's website. The link must be accompanied by the following text: "The final publication is available at link.springer.com".

Download

Narrow thermal tolerance and low dispersal drive higher speciation in tropical mountains

Proceedings of the National Academy of Sciences of the United States of America, Nov 5, 2018

Download

Genus. International Journal of Invertebrate Taxonomy, 2009

Lymanopoda marianna Staudinger (Nymphalidae, Satyrinae) is an endemic species of butterfly of the... more Lymanopoda marianna Staudinger (Nymphalidae, Satyrinae) is an endemic species of butterfly of the Venezuelan Cordillera de Merida. It was hitherto considered monotypic, however this study shows it is highly polytypic. Five new subspecies are described differing noticeably in the shape, size and colour of the conspicuous hindwing upperside bluish-green patch. Some differences can be observed in male genitalia as well. A western-eastern slopes biogeographical pattern is uncovered, and the Santo Domingo Valley is recognized herein for the first time as a center of endemism at a subspecies level. Microstructure and function of hindwing upperside blue scales are discussed suggesting their role in mate locating. Affinities and phyletic relations of L. marianna with other congeners are discussed based on colour patterns, male and female genitalia, and molecular data. Male genitalia and molecular data place it in the clade of L. obsoleta however female genitalia and colour patterns indicate...

Genetic diversity and gene flow decline with elevation in montane mayflies

Heredity, 2017

Montane environments around the globe are biodiversity 'hotspots' and important reservoirs of gen... more Montane environments around the globe are biodiversity 'hotspots' and important reservoirs of genetic diversity. Montane species are also typically more vulnerable to environmental change than their low-elevation counterparts due to restricted ranges and dispersal limitations. Here we focus on two abundant congeneric mayflies (Baetis bicaudatus and B. tricaudatus) from montane streams over an elevation gradient spanning 1400 m. Using single-nucleotide polymorphism genotypes, we measured population diversity and vulnerability in these two species by: (i) describing genetic diversity and population structure across elevation gradients to identify mechanisms underlying diversification; (ii) performing spatially explicit landscape analyses to identify environmental drivers of differentiation; and (iii) identifying outlier loci hypothesized to underlie adaptive divergence. Differences in the extent of population structure in these species were evident depending upon their position along the elevation gradient. Heterozygosity, effective population sizes and gene flow all declined with increasing elevation, resulting in substantial population structure in the higher elevation species (B. bicaudatus). At lower elevations, populations of both species are more genetically similar, indicating ongoing gene flow. Isolation by distance was detected at lower elevations only, whereas landscape barriers better predicted genetic distance at higher elevations. At higher elevations, dispersal was restricted due to landscape effects, resulting in greater population isolation. Our results demonstrate differentiation over small spatial scales along an elevation gradient, and highlight the importance of preserving genetic diversity in more isolated high-elevation populations.

Download

Declines in Butterflies and Insectivorous Birds in Areas of High Pesticide Use in California

Appendix A. Species-specific values for natural-history categories and other variables used in analyses at our three focal sites

Species-specific values for natural-history categories and other variables used in analyses at ou... more

Appendix B. Details associated with mitochondrial data and analyses involving sequence data

Details associated with mitochondrial data and analyses involving sequence data.

Appendix C. Detailed results from logistic regressions and phenological analyses, by site and species

Detailed results from logistic regressions and phenological analyses, by site and species.

Appendix D. Results of Bayesian model averaging involving continuous and categorical predictor variables

Results of Bayesian model averaging involving continuous and categorical predictor variables.

CO_Final_Circuit_Data_S1

B. tricaudatus genepop file

B.bicudatus genepop file

Cryptic species diversity reveals biogeographic support for the ‘mountain passes are higher in the tropics’ hypothesis

Proceedings of the Royal Society B: Biological Sciences, 2016

The ‘mountain passes are higher in the tropics’ (MPHT) hypothesis posits that reduced climate var... more The ‘mountain passes are higher in the tropics’ (MPHT) hypothesis posits that reduced climate variability at low latitudes should select for narrower thermal tolerances, lower dispersal and smaller elevational ranges compared with higher latitudes. These latitudinal differences could increase species richness at low latitudes, but that increase may be largely cryptic, because physiological and dispersal traits isolating populations might not correspond to morphological differences. Yet previous tests of the MPHT hypothesis have not addressed cryptic diversity. We use integrative taxonomy, combining morphology (6136 specimens) and DNA barcoding (1832 specimens) to compare the species richness, cryptic diversity and elevational ranges of mayflies (Ephemeroptera) in the Rocky Mountains (Colorado; approx. 40°N) and the Andes (Ecuador; approx. 0°). We find higher species richness and smaller elevational ranges in Ecuador than Colorado, but only after quantifying and accounting for crypti...

Download

Supporting Information (SI) for Gill et al. 2016 manuscript

Detection of and environmental factors related to a declining butterfly fauna and speciation patterns of a tropical montane butterfly genus

Narrow thermal tolerance and low dispersal drive tropical diversification

Narrow thermal tolerance and low dispersal drive higher speciation in tropical mountains

Proceedings of the National Academy of Sciences

Species richness is greatest in the tropics, and much of this diversity is concentrated in mounta... more Species richness is greatest in the tropics, and much of this diversity is concentrated in mountains. Janzen proposed that reduced seasonal temperature variation selects for narrower thermal tolerances and limited dispersal along tropical elevation gradients [Janzen DH (1967) Am Nat 101:233–249]. These locally adapted traits should, in turn, promote reproductive isolation and higher speciation rates in tropical mountains compared with temperate ones. Here, we show that tropical and temperate montane stream insects have diverged in thermal tolerance and dispersal capacity, two key traits that are drivers of isolation in montane populations. Tropical species in each of three insect clades have markedly narrower thermal tolerances and lower dispersal than temperate species, resulting in significantly greater population divergence, higher cryptic diversity, higher tropical speciation rates, and greater accumulation of species over time. Our study also indicates that tropical montane spe...

Download

Freshwater vertebrate and invertebrate diversity patterns in an Andean-Amazon basin: implications for conservation efforts

Neotropical Biodiversity, 2016

The Napo Basin in Ecuador is an important drainage of the Amazon Basin, the most biodiverse ecosy... more The Napo Basin in Ecuador is an important drainage of the Amazon Basin, the most biodiverse ecosystem for freshwater species. At the same time, this basin has conspicuous information gaps on its biodiversity patterns and human threats. Here, we estimated the diversity distribution patterns of freshwater vertebrates and invertebrates in the Napo Basin, as a tool for present and future management and conservation efforts. Also, we assessed the spatial congruence of the diversity patterns observed between aquatic vertebrates and invertebrates. For this, we compiled occurrence records for 481 freshwater vertebrate species (amphibians, birds, mammals, reptiles, and fish), and 54 invertebrate families obtained across an altitudinal gradient of the basin (200-4500 m). Using these occurrence records and environmental variables, we modeled the distribution of each vertebrate species and invertebrate family. Then, we stacked these distributions to build species richness maps for vertebrates, and a family richness map for invertebrates. We found that the most diverse areas for vertebrate species are the lowlands (<600 m), whereas richness of invertebrate families peaks at higher elevations (lower montane forests). Congruence among species richness patterns of the five vertebrate groups was high (r = 0.66), with fish being the best predictor for vertebrates (r = 0.78). However, congruence decreased at higher elevations (r = 0.14), suggesting that specific species or habitat-based approaches should be used in the highlands. Also, we found a high correlation between species and family richness of freshwater invertebrates (r = 0.66), suggesting that family richness of invertebrates could be used as a surrogate of species richness in this basin. We highlight this correlation because, at the watershed scale, it allows working with family groups where species-level taxonomy is challenging. Our results provide the first comprehensive representation of freshwater biodiversity patterns at high resolution in an Andean-Amazon basin, and calls attention to the need for incorporating different taxonomic groups when assessing diversity patterns. Given these different diversity patterns, conservation programs for this basin should incorporate both vertebrate and invertebrate groups as biodiversity indicators. Finally, our study provides a practical methodological guidance in the estimation of freshwater diversity in regions of scarce information with high conservation priority, such as the Andean-Amazon basins.