45 Works

Metabolic rate is negatively linked to adult survival but does not explain latitudinal differences in songbirds

Andy Boyce, James C. Mouton, Penn Lloyd, Blair O. Wolf & Thomas E. Martin
Survival rates vary dramatically among species and predictably across latitudes, but causes of this variation are unclear. The rate of living hypothesis posits that physiological damage from metabolism causes species with faster metabolic rates to exhibit lower survival rates. However, whether increased survival commonly observed in tropical and south temperate latitudes is associated with slower metabolic rate remains unclear. We compared metabolic rates and annual survival rates across 46 species that we measured, and 147...

Data from: Uneven missing data skew phylogenomic relationships within the lories and lorikeets

Brian Smith, , Brett W. Benz & Michael J. Andersen
Inlcuded is the supplementary data for Smith, B. T., Mauck, W. M., Benz, B., & Andersen, M. J. (2018). Uneven missing data skews phylogenomic relationships within the lories and lorikeets. BioRxiv, 398297. The resolution of the Tree of Life has accelerated with advances in DNA sequencing technology. To achieve dense taxon sampling, it is often necessary to obtain DNA from historical museum specimens to supplement modern genetic samples. However, DNA from historical material is generally...

Reductions in the dietary niche of southern sea otters (Enhydra lutris nereis) from the Holocene to the Anthropocene.

Emma Elliott Smith, M. Tim Tinker, Emily Whistler, Douglas Kennett, René Vellanoweth, Diane Gifford-Gonzalez, Mark Hylkema & Seth Newsome
The sea otter (Enhydra lutris) is a marine mammal hunted to near extinction during the 1800s. Despite their well-known importance as a keystone species, we know little about historical sea otter ecology. Here, we characterize the ecological niche of ancient southern sea otters (E. lutris nereis) using d13C and d15N analysis of bones recovered from archaeological sites spanning ~7,000 to 350 years before present (N=112 individuals) at five regions along the coast of California. These...

(2019) Fieldtrip booklet for GSA Grand Canyon Thompson Field Forum I, \"Age and Carving of Grand Canyon: Towards a resolution of 150 years of debate\" (September 14-21, 2019)

Karl Karlstrom
Booklet containing USGS Grand Canyon Geologic River Maps. The Conveners for the 2019 GSA Thompson Field Forum were Karl Karlstrom and Laura Crossey, University of New Mexico, Eugene Humphreys, University of Oregon, David Shuster, University of California Berkeley, and Kelin Whipple, Arizona State University. The age and evolution of the 1.6-km-deep, 270-mile-long Grand Canyon have been debated since J.W. Powell’s exploration of the Colorado River in 1869. This GSA Thompson Field Forum honored the 150th...

(2019) Grand Canyon Geology and Geoscience Education Public Symposium (April 18-20, 2019): final program and abstracts

Karl Karlstrom
This symposium was held April 18-20, 2019 at the Shrine of the Ages Auditorium at the South Rim of Grand Canyon in honor of Grand Canyon National Park’s 2019 Centennial celebration, the 150th anniversary of John Wesley Powell’s 1869 pioneering Colorado River expedition, and Earth Day 2019. The conveners were Karl Karlstrom and Laurie Crossey, University of New Mexico, Steven Semken, Arizona State University, Todd Stoeberl, Chief of Interpretation, and Jeanne Calhoun, Chief of Science...

Allometric modelling of plant biomass from drone-acquired photographs: drone images, ground control marker coordinates and biomass data from 36 sites, 2016-2020

A. Cunliffe, K. Anderson, F. Boschetti, H. Graham, R. Brazier, I. Myers-Smith, T. Astor, M. Boer, L. Calvo, P. Clark, M. Cramer, M. Encinas-Lara, S. Escarzaga, J. Fernández-Guisuraga, A. Fisher, K. Gdulová, B. Gillespie, A. Griebel, N. Hanan, M. Hanggito, S. Haselberger, C. Havrilla, W. Ji, J. Karl, M. Kirchhoff … & R. Wojcikiewicz
This dataset contains RGB photographs acquired from drone surveys. There are 741 harvest plots from 38 surveys at 36 sites around the world. Each site was approximately 1 ha in area. Included with the photographic images are the coordinates of ground control markers, biomass, taxonomic and location data for harvest plots and ancillary metadata. The observations can be used to obtain allometric size-biomass models. This work was supported by the Natural Environment Research Council award...

Model Output for BCSD CMIP5 Simulations for the Rio Grande from 1951-2099

David Gutzler
The data files used in the analysis of BCSD CMIP5 simulations as part of the broader analysis of the future of streamflow predictability for the Rio Grande headwaters. The data files were generated using the raw data from the Bureau of Reclamation publicly available datasets (reference below) "Reclamation, 2013. 'Downscaled CMIP3 and CMIP5 Climate and Hydrology Projections: Release of Downscaled CMIP5 Climate Projections, Comparison with preceding Information, and Summary of User Needs', prepared by the...

A test of island biogeographic theory applied to estimates of gene flow in a Fijian bird is largely consistent with neutral expectations

Ethan Gyllenhaal, Xena Mapel, Alivereti Naikatini, Robert Moyle & Michael Andersen
Islands were key to the development of allopatric speciation theory because they are a natural laboratory of repeated barriers to gene flow caused by open water gaps. Despite their proclivity for promoting divergence, little empirical work has quantified the extent of gene flow among island populations. Following classic island biogeographic theory, two metrics of interest are relative island size and distance. Fiji presents an ideal system for studying these dynamics, with four main islands that...

Comparing Lifeact and Phalloidin for super-resolution imaging of actin in fixed cells

Michael J. Wester, Hanieh Mazloom-Farsibaf, Farzin Farzam, Mohamadreza Fazel, Marjolein B. M. Meddens & Keith A. Lidke
Visualizing actin filaments in fixed cells is of great interest for a variety of topics in cell biology such as cell division, cell movement, and cell signaling. We investigated the possibility of replacing phalloidin, the standard reagent for super-resolution imaging of F-actin in fixed cells, with the actin binding peptide `lifeact’. We compared the labels for use in single molecule based super-resolution microscopy, where AlexaFluor 647 labeled phalloidin was used in a (d)STORM modality and...

Traces of air and body temperature in six hummingbird species in the Andes

Blair Wolf, Andrew McKechnie, Jonathan Schmitt, Zenon Czenze, Andrew Johnson & Christopher Witt
Torpor is thought to be particularly important for small endotherms occupying cold environments and with limited fat reserves to fuel metabolism. It remains mysterious why, among birds, torpor is both rare and variable in extent. We investigated torpor in a hummingbird community at ~3,800 m a.s.l. in the tropical Andes by monitoring body temperature (Tb) in 26 individuals of six species held captive overnight and experiencing natural air temperature (Ta) patterns. All species used pronounced...

Data from: Trematode parasites exceed aquatic insect biomass in Oregon stream food webs

Daniel Preston, Tamara Layden, Leah Segui, Landon Falke, Sara Brant & Mark Novak
1) Although parasites are increasingly recognized for their ecosystem roles, it is often assumed that free-living organisms dominate animal biomass in most ecosystems and therefore provide the primary pathways for energy transfer. 2) To examine the contributions of parasites to ecosystem energetics in freshwater streams, we quantified the standing biomass of trematodes and free-living organisms at nine sites in three streams in western Oregon, USA. We then compared rates of biomass flow from snails (Juga...

Data for: Evaluating the impact of physical frailty during ageing in wild chimpanzees (Pan troglodytes schweinfurthii)

Melissa Emery Thompson, Stephanie Fox, Kris Sabbi, Emily Otali, Nicole Thompson Gonzalez, Martin Muller, Richard Wrangham & Zarin Machanda
While declining physical performance is an expected consequence of aging, human clinical research has placed increasing emphasis on physical frailty as a predictor of death and disability in the elderly. We examined non-invasive measures approximating frailty in a richly-sampled longitudinal dataset on wild chimpanzees. Using urinary creatinine to assess lean body mass, we demonstrated moderate but significant declines in physical condition with age in both sexes. While older chimpanzees spent less of their day in...

Wild chimpanzees exhibit human-like aging of glucocorticoid regulation

Melissa Emery Thompson, Stephanie Fox, Andreas Berghaenel, Kris Sabbi, Sarah Phillips-Garcia, Drew Enigk, Emily Otali, Zarin Machanda, Richard Wrangham & Martin Muller
Cortisol, a key product of the stress response, has critical influences on degenerative aging in humans. In turn, cortisol production is affected by senescence of the hypothalamic-pituitary-adrenal (HPA) axis, leading to progressive dysregulation and increased cortisol exposure. These processes have been studied extensively in industrialized settings, but few comparative data are available from humans and closely-related species living in natural environments, where stressors are very different. Here, we examine age-related changes in urinary cortisol in...

Observed Precipitation, Temperature, and Snow Water Equivalent for the Rio Grande headwaters from 1905-2015

David Gutzler
This file summarizes the data found in RG_obs_PTSWEQ.csv used in the analysis of the contribution of precipitation, temperature, and SWE to the interannual variability of runoff generation in the Rio Grande headwaters.

Supporting data for changing climate reallocates the carbon debt of frequent-fire forests

Matthew Hurteau, Marissa Goodwin, Harold Zald & Malcolm North
Ongoing climate change will likely alter the carbon carrying capacity of forests as they adjust to climatic extremes and changing disturbance regimes. Increasing drought frequency and severity are already causing widespread tree mortality events, which can exacerbate the carbon debt that has developed as a result of fire-exclusion. Reducing tree density and surface fuels decreases the risk of high-severity wildfire and may also limit drought-induced mortality by reducing competition. We utilized a long-term thinning and...

Predicting amphibian intraspecific diversity with machine learning: Challenges and prospects for integrating traits, geography, and genetic data

Lisa Barrow
The growing availability of genetic datasets, in combination with machine learning frameworks, offer great potential to answer long-standing questions in ecology and evolution. One such question has intrigued population geneticists, biogeographers, and conservation biologists: What factors determine intraspecific genetic diversity? This question is challenging to answer because many factors may influence genetic variation, including life history traits, historical influences, and geography, and the relative importance of these factors varies across taxonomic and geographic scales. Furthermore,...

Distinguishing between dispersal and vicariance: A novel approach using anti-tropical taxa across the fish Tree of Life

William Ludt & Corinne Myers
Aim: Anti-tropical taxa are species split by the tropics into disjunct northern and southern populations. These distributions occur throughout the Tree of Life, but the mechanisms proposed to drive this pattern are debated and generally fit into two categories: dispersal and vicariance. Here we quantitatively test the prevalence of dispersal and vicariance as plausible drivers of anti-tropical marine distributions using intra-specific anti-tropical marine fishes as a model system. Location: Primarily Indo-Pacific. Major Taxa Studied: Marine...

Parachute geckos free fall into synonymy: Gekko phylogeny, and a new subgeneric classification, inferred from thousands of ultraconserved elements

Perry Wood, Xianguang Guo, Scott Travers, Yong-Chao Su, Karen Olson, Aaron Bauer, Lee Grismer, Cameron Siler, Robert Moyle, Michael Andersen & Rafe Brown
Recent phylogenetic studies of gekkonid lizards have revealed unexpected, widespread paraphyly and polyphyly among genera, unclear generic boundaries, and a tendency towards the nesting of taxa exhibiting specialized, apomorphic morphologies within geographically widespread “generalist” clades. This is especially true in Australasia, where monophyly of Gekko proper has been questioned with respect to phenotypically ornate flap-legged geckos of the genus Luperosaurus, the Philippine false geckos of the genus Pseudogekko, and even the elaborately “derived” parachute geckos...

Does breeding season variation affect evolution of a sexual signaling trait in a tropical lizard clade?

Levi Gray, Anthony Barley, David Hillis, Carlos Pavón-Vázquez, Steven Poe & Brittney White
Sexually selected traits can be expected to increase in importance when the period of sexual behavior is constrained, such as in seasonally restricted breeders. Anolis lizard male dewlaps are classic examples of multifaceted signaling traits, with demonstrated intraspecific reproductive function reflected in courtship behavior. Fitch and Hillis found a correlation between dewlap size and seasonality in mainland Anolis using traditional statistical methods. Here, we present two tests of the Fitch-Hillis Hypothesis using new phylogenetic and...

Supporting data for increasing fire activity reinforces shrub conversion in Southwestern US forests

Matthew Hurteau, Alisa Keyser, Dan Krofcheck, Cecile Remy & Craig Allen
Fire-exclusion in historically frequent-fire forests of the southwestern United States has altered forest structure and increased the probability of high-severity fire. Warmer and drier conditions, coupled with dispersal distance limitations are limiting tree seedling establishment and survival following high-severity fire. Post-fire conversion to non-forest vegetation can be reinforced by subsequent fire events. We sought to determine the influence of fire probability on post-fire vegetation development in a severely burned landscape in New Mexico, USA. We...

Phylogenetic restriction of plant invasion in drought-stressed environments: implications for insect-pollinated plant communities in water-limited ecosystems

Andrew Simon, Hannah Marx & Brian Starzomski
Background: Plant-pollinator community diversity has been found to decrease under conditions of drought stress, however research into the temporal dimensions of this phenomenon remains limited. In this study, we investigated the effect of seasonal drought on the temporal niche dynamics of entomophilous flowering plants in a water-limited ecosystem. We hypothesized that closely related native and exotic plants would tend to share similar life history, and that peak flowering events would therefore coincide with phylogenetic clustering...

Data from: Demography, life history trade-offs, and the gastrointestinal virome of wild chimpanzees

Jacob D. Negrey, Melissa Emery Thompson, Kevin E. Langergraber, Zarin P. Machanda, John C. Mitani, Martin N. Muller, Emily Otali, Leah A. Owens, Richard W. Wrangham & Tony L. Goldberg
In humans, senescence increases susceptibility to viral infection. However, comparative data on viral infection in free-living non-human primates—even in our closest living relatives, chimpanzees and bonobos (Pan troglodytes and P. paniscus)—are relatively scarce, thereby constraining an evolutionary understanding of age-related patterns of viral infection. We investigated a population of wild eastern chimpanzees (P. t. schweinfurthii), using metagenomics to characterize viromes (full viral communities) in the feces of 42 sexually mature chimpanzees (22 males, 20 females)...

Two-step mixed model approach to analyzing differential alternative RNA splicing: Datasets and R scripts for analysis of alternative splicing

Li Luo, Huining Kang, Xichen Li, Scott Ness & Christine Stidley
Changes in gene expression can correlate with poor disease outcomes in two ways: through changes in relative transcript levels or through alternative RNA splicing leading to changes in relative abundance of individual transcript isoforms. The objective of this research is to develop new statistical methods in detecting and analyzing both differentially expressed and spliced isoforms, which appropriately account for the dependence between isoforms and multiple testing corrections for the multi-dimensional structure of at both the...

Taxon pulse dynamics, episodic dispersal, and host colonization across Beringia drive diversification of a holarctic tapeworm assemblage

Genevieve Haas, Eric Hoberg, Joseph Cook, Heikki Henttonen, Arseny Makarikov, Sarah Gallagher, Nikolai Dokuchaev & Kurt Galbreath
Aim: We test the predictions of the Stockholm Paradigm, a synthesis of eco-evolutionary theory explaining the nature of faunal assembly, host range and parasite diversification. Faunal diversification and assembly, manifested in patterns of host colonization, co-adaptation and parasite speciation, is predicted to emerge as a consequence of alternating episodes of ecological disruption and stability. Specifically, for a diverse cestode genus (Arostrilepis), we evaluate the number and direction of Pleistocene dispersal events across Beringia, the number...

Data from: Extensive hybridization between two Andean warbler species with shallow divergence in mtDNA

Laura Céspedes-Arias, Andrés Cuervo, Elisa Bonaccorso, Marialejandra Castro-Farias, Alejandro Mendoza-Santacruz, Jorge Pérez-Emán, Christopher Witt & Daniel Cadena
Studying processes acting on differentiated populations upon secondary contact, such as hybridization, is important to comprehensively understand how species are formed and maintained over time. However, avian speciation studies in the tropical Andes have largely focused on the role of topographic and ecological barriers promoting divergence in allopatry, seldom examining hybridization and introgression. We describe a hybrid zone involving 2 closely related Andean warblers (Parulidae), the Golden-fronted Redstart (Myioborus ornatus) and the Spectacled Redstart (Myioborus...

Registration Year

  • 2020

Resource Types

  • Dataset


  • University of New Mexico
  • Harvard University
  • Tufts University
  • University of Kansas
  • University of Montana
  • University of Pretoria
  • University of Wisconsin-Madison
  • Northern Arizona University
  • University of California, Santa Barbara
  • United States Geological Survey