13 Works

Subpopulation contributions to a breeding metapopulation of migratory Arctic herbivores: Survival, fecundity, and asymmetric dispersal

Ray Alisauskas, Anna Calvert, James Leafloor, Robert Rockwell, Kiel Drake, Dana Kellett, Rod Brook & Kenneth Abraham
Estimates of demographic parameters for lesser snow geese (Anser caerulescens caerulescens) have become critical to understand ecosystem change in northern Canada. Exponential increase in abundance has produced hyperdensities of these herbivores that can affect Arctic ecosystem stability through intense foraging. Increased and sustained marking of individually-identifiable lesser snow geese over their breeding distribution now permits joint estimation of local vital rates and movement probabilities among widely scattered subpopulations. We used multi-state models, including an unobservable...

Decoupled dust deposition and ocean productivity in the Antarctic Zone of the Southern Ocean over the past 1.5 million years

Michael E. Weber , Ian Bailey , Sidney R. Hemming , Yasmina M. Martos , Brendan T. Reilly , Thomas A. Ronge , Stefanie Brachfeld , Trevor Williams , Maureen Raymo , Simon T. Belt , Hendrik Vogel , Victoria Peck , Linda Armbrecht , Alix Cage , Fabricio G. Cardillo , Zhiheng Du , Gerson Fauth , Christopher J. Fogwill , Marga Garcia , Marlo Garnsworthy , Anna Glüder , Michelle Guitard , Marcus Gutjahr , Iván Hernández-Almeida , Frida S. Hoem … & Xufeng Zheng
Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages and their role in influencing the carbon cycle. We report the first high-resolution record of dust deposition and ocean productivity for the Antarctic Zone, close to the main dust source, Patagonia. Our deep-ocean records cover the last 1.5 Ma, thus doubling that from Antarctic ice-cores. We find a ≥10-fold increase in dust deposition during glacials and a ≤5-fold...

Systematic revision of the arboreal Neotropical ‘Thorellii’ clade of Centruroides Marx, 1890 bark scorpions (Buthidae c.l. Koch, 1837) with descriptions of six new species

Aaron Goodman, Lorenzo Prendini, Oscar Francke & Lauren Esposito
The arboreal Neotropical ‘thorellii’ clade of Centruroides Marx, 1890 bark scorpions (Buthidae C.L. Koch, 1837) is revised, using a novel approach to species delimitation. A phylogenetic analysis, based on 112 morphological characters and 1078 aligned DNA nucleotides from the mitochondrial Cytochrome c Oxidase Subunit I (COI) gene, provided the framework for placing singletons from geographically disparate localities (and often with suboptimal preservation) using COI minibarcodes, thereby enlarging the taxon sample for diagnosis and delimitation of...

CT slices of three Protoceratopsian skulls and example slices of other Gobi Desert vertebrates

Congyu Yu, Fangbo Qin, Yin Li, Zichuan Qin & Mark Norell
This is a image dataset for deep learning studies. The main dataset comprises labeled CT slices from 3 protoceratopsian dinosaur skulls discovered from the Gobi Desert, Mongolia. The fossil specimens are now in the Division of Paleontology, American Museum of Natural History, New York, NY, USA. Inside the folders named after specimen number (i.e. IGM100-1021), there are six sub-folders comprising labeled or unlabled CT slice images of the specimen from three directions: axial, coronal, and...

Phylogeography of the tepui brush finch, Atlapetes personatus (Passeriformes: Passerellidae): Extensive differentiation on the sky islands of the Venezuelan Pantepui

George Barrowclough, Bartek Jablonski, Jonas Lai & Jeff Groth
The biogeography and genetic structure of species endemic to the high elevation sky islands (tepuis) of the Guiana Shield in eastern and southern Venezuela and adjacent areas of Brazil and Guyana are poorly known. We investigated the phylogeography and population structure of the tepui brush finch (Atlapetes personatus) as an exemplar of that biota. Mitochondrial DNA sequences revealed three monophyletic clades that correspond to major morphological subspecies groups occurring in eastern, southern, and northwestern regions...

Geographic and temporal morphological stasis in the latest Cretaceous ammonoid Discoscaphites iris from the U.S. Gulf and Atlantic Coastal Plains

James Witts, Corinne Myers, Matthew Garb, Kayla Irizarry, Ekaterina Larina, Anastasia Rashkova & Neil Landman
We examine temporal and spatial variation in morphology of the ammonoid cephalopod Discoscaphites iris using a large dataset from multiple localities in the Late Cretaceous (Maastrichtian) of the United States Gulf and Atlantic Coastal Plains, spanning a distance of 2000 km along the paleoshoreline. Our results suggest that the fossil record of D. iris is consistent with no within species net accumulation of phyletic evolutionary change across morphological traits or the lifetime of this species....

Data from: Biogeography of curimatid fishes reveals multiple lowland-upland river transitions and differential diversification in the Neotropics (Teleostei, Curimatidae)

Bruno F. Melo, James S. Albert, Fernando C. P. Dagosta & Victor A. Tagliacollo
The Neotropics harbors a megadiverse ichthyofauna comprising over 6300 species with approximately 80% in just three taxonomic orders within the clade Characiphysi. This highly diverse group has evolved in tropical South America over tens to hundreds of millions of years influenced mostly by re‐arrangements of river drainages in lowland and upland systems. In this study, we investigate patterns of spatial diversification in Neotropical freshwater fishes in the family Curimatidae, a species‐rich clade of the order...

A Double-Edged Sword: Parental care increases risk of offspring infection by a maternally-vectored parasite

Rebecca Jean Millena & Jay Rosenheim
Parental care can protect offspring from predators but can also create opportunities for parents to vector parasites to their offspring. We hypothesized that the risk of infection by maternally-vectored parasites would increase with the frequency of mother-offspring contact. Ammophila spp. wasps (Hymenoptera: Sphecidae) build nests in which they rear single offspring. Ammophila species exhibit varied offspring provisioning behaviors: some species enter the nest once to provision a single, large caterpillar, whereas others enter the nest...

Datasets from: Craniodental morphology and phylogeny of marsupials

Robin M. D. Beck, Robert S. Voss & Sharon A. Jansa
The current literature on marsupial phylogenetics includes numerous studies based on analyses of morphological data with limited sampling of Recent and fossil taxa and many studies based on analyses of molecular data with dense sampling of Recent taxa, but few studies have combined both data types. Another dichotomy in the marsupial phylogenetic literature is between studies focused on New World taxa, and those focused on Sahulian taxa. To date, there has been no attempt to...

Complex genetic patterns and distribution limits mediated by native congeners of the worldwide invasive red‐eared slider turtle

Sayra Espindola, Ella Vázquez-Domínguez, Miguel Nakamura, Luis Osorio-Olvera, Enrique Martínez-Meyer, Edward Myers, Isaac Overcast, Brendan Reid & Frank Burbrink
Non-native (invasive) species offer a unique opportunity to study the geographic distribution and range limits of species, wherein the evolutionary change driven by interspecific interactions between native and non-native closely related species is a key component. The red-eared slider turtle, Trachemys scripta elegans (TSE), has been introduced and successfully established worldwide. It can coexist with its native congeners T. cataspila, T. venusta and T. taylori in Mexico. We performed comprehensive fieldwork, executed a battery of...

The locus of identity for phylogeographic species delimitation and integrative taxonomy in seal salamanders (Desmognathus monticola)

Robert Pyron, Kyle O'Connell, Sophie Duncan, Frank Burbrink & David Beamer
Significant empirical and theoretical advances have been made regarding species delimitation. Numerous methods have been developed to test precisely defined models of speciation, and the philosophical basis of species ontology has several robust definitions. However, there are still at least two distinct areas in which this synthesis is incomplete. First, computational algorithms alone are unable to settle the theory-laden question of whether a sample of individuals consists of one or more species; this is an...

Bone thin sections of six Alvarezsaurian dinosaurs

Congyu Yu, Zichuan Qin, Fangbo Qin & Ying Li
This dataset includes histological thin sections from long bones of six different Alvarezsaurian dinosaurs and labelled primary and secondary osteons.

Wallacean and Melanesian islands promote higher rates of diversification within the global passerine radiation Corvides: Supplementary information

Jenna McCullough, Carl Oliveros, Brett Benz, Rosana Zenil-Ferguson, Joel Cracraft, Robert Moyle & Michael Andersen
The complex island archipelagoes of Wallacea and Melanesia have provided empirical data behind integral theories in evolutionary biology, including allopatric speciation and island biogeography. Yet, questions regarding the relative impact of the layered biogeographic barriers, such as deep-water trenches and isolated island systems, on faunal diversification remain underexplored. One such barrier is Wallace’s Line, a significant biogeographic boundary that largely separates Australian and Asian biodiversity. To assess the relative roles of biogeographic barriers—specifically isolated island...

Registration Year

  • 2022

Resource Types

  • Dataset
  • Text


  • American Museum of Natural History
  • University of Bristol
  • National Autonomous University of Mexico
  • Chinese Academy of Sciences
  • University of New Mexico
  • University of Kansas
  • Keele University
  • University of Adelaide
  • University of Plymouth
  • Spanish Institute of Oceanography