Institution
Augustana College (Illinois)
Education•Rock Island, Illinois, United States•
About: Augustana College (Illinois) is a education organization based out in Rock Island, Illinois, United States. It is known for research contribution in the topics: Higher education & Population. The organization has 491 authors who have published 763 publications receiving 14274 citations. The organization is also known as: Augustana College and Theological Seminary.
Papers published on a yearly basis
Papers
More filters
••
TL;DR: It is suggested that cospeciation is not the case for feather mites and parulid hosts at this fine phylogenetic scale, and the question if cospeciating applies for other symbiotic systems involving hosts that have complex life histories is raised.
Abstract: Host–symbiont relationships are ubiquitous in nature, yet evolutionary and ecological processes that shape these intricate associations are often poorly understood. All orders of birds engage in symbioses with feather mites, which are ectosymbiotic arthropods that spend their entire life on hosts. Due to their permanent obligatory association with hosts, limited dispersal and primarily vertical transmission, we hypothesized that the cospeciation between feather mites and hosts within one avian family (Parulidae) would be perfect (strict cospeciation). We assessed cophylogenetic patterns and tested for congruence between species in two confamiliar feather mite genera (Proctophyllodidae: Proctophyllodes, Amerodectes) found on 13 species of migratory warblers (and one other closely related migratory species) in the eastern United States. Based on COI sequence data, we found three Proctophyllodes lineages and six Amerodectes lineages. Distanceand event-based cophylogenetic analyses suggested different cophylogenetic trajectories of the two mite genera, and although some associations were significant, there was little overall evidence supporting strict cospeciation. Host switching is likely responsible for incongruent phylogenies. In one case, we documented prairie warblers Setophaga discolor harboring two mite species of the same genus. Most interestingly, we found strong evidence that host ecology may influence the likelihood of host switching occurring. For example, we documented relatively distantly related ground-nesting hosts (ovenbird Seiurus aurocapilla and Kentucky warbler Geothlypis formosa) sharing a single mite species, while other birds are shrub/canopy or cavity nesters. Overall, our results suggest that cospeciation is not the case for feather mites and parulid hosts at this fine phylogenetic scale, and raise the question if cospeciation applies for other symbiotic systems involving hosts that have complex life histories. We also provide preliminary evidence that incorporating host ecological traits into cophylogenetic analyses may be useful for understanding how symbiotic systems have evolved.
24 citations
••
TL;DR: Six actors generated think-aloud protocols while studying a theatrical script and found that, although the mnemonist employed imagery-mediation (usually used for learning discrete items), he had devised an original variation capable of yielding verbatim retention.
Abstract: Previous research has shown that actors recall text with word-for-word fidelity by using a type of meaning-based learning strategy that usually results only in retention of the gist (Noice, 1993). Six actors generated think-aloud protocols while studying a theatrical script. Analysis of these protocols indicated that the actors' application of their strategy required minute attention to the exact wording, punctuation, etc. in order to derive the deep meaning they require for interpretation and performance. A think-aloud protocol of the well-known mnemonist, Harry Lorayne, was collected for the same theatrical script. Although the strategies of the actors and the mnemonist were totally different, they appear to be dependent on the same underlying processes. An additional finding was that, although the mnemonist employed imagery-mediation (usually used for learning discrete items), he had devised an original variation capable of yielding verbatim retention. The reasons why mnemonic devices might be useful to actors in certain situations are discussed.
24 citations
••
Oklahoma State University–Stillwater1, Augustana College (Illinois)2, Hobart and William Smith Colleges3, Salt Lake Community College4, University of Montana Western5, Worcester Polytechnic Institute6, Arkansas State University7, Lafayette College8, Shaw University9, Duke University10, Comisión Nacional para el Conocimiento y Uso de la Biodiversidad11, Illinois State University12, University of Washington13, Wilmington University14, Texas A&M University–Kingsville15, Washington & Jefferson College16, Bloomsburg University of Pennsylvania17, Villanova University18, Macalester College19, Memorial University of Newfoundland20, University of Pittsburgh21, Principia College22, Old Dominion University23, Northern Kentucky University24, Muhlenberg College25, Florida International University26, Canadian Wildlife Service27, University of Tampa28, Warren Wilson College29, Louisiana Tech University30, Lake Forest College31, ETH Zurich32, National Autonomous University of Mexico33, Trinity College, Dublin34, Furman University35, Michigan Technological University36, University of Maine37, University of Wisconsin–Platteville38, Wells College39, University of Minnesota40, University of Illinois at Chicago41, Colorado State University–Pueblo42, University of Toronto43, Hope College44, Universidad Autónoma del Estado de Hidalgo45
TL;DR: A coordinated, continent-wide study provides new insight into the species most vulnerable to building collisions, making them potentially in greatest need of conservation attention to reduce collisions, and lends insight into species- and life history-related variation and correlates of building collisions that can help refine collision management efforts.
Abstract: Collisions with buildings cause up to 1 billion bird fatalities annually in the United States and Canada. However, efforts to reduce collisions would benefit from studies conducted at large spatial scales across multiple study sites with standardized methods and consideration of species- and life-history-related variation and correlates of collisions. We addressed these research needs through coordinated collection of data on bird collisions with buildings at sites in the United States (35), Canada (3), and Mexico (2). We collected all carcasses and identified species. After removing records for unidentified carcasses, species lacking distribution-wide population estimates, and species with distributions overlapping fewer than 10 sites, we retained 269 carcasses of 64 species for analysis. We estimated collision vulnerability for 40 bird species with ≥2 fatalities based on their North American population abundance, distribution overlap in study sites, and sampling effort. Of 10 species we identified as most vulnerable to collisions, some have been identified previously (e.g., Black-throated Blue Warbler [Setophaga caerulescens]), whereas others emerged for the first time (e.g., White-breasted Nuthatch [Sitta carolinensis]), possibly because we used a more standardized sampling approach than past studies. Building size and glass area were positively associated with number of collisions for 5 of 8 species with enough observations to analyze independently. Vegetation around buildings influenced collisions for only 1 of those 8 species (Swainson's Thrush [Catharus ustulatus]). Life history predicted collisions; numbers of collisions were greatest for migratory, insectivorous, and woodland-inhabiting species. Our results provide new insight into the species most vulnerable to building collisions, making them potentially in greatest need of conservation attention to reduce collisions and into species- and life-history-related variation and correlates of building collisions, information that can help refine collision management.
24 citations
••
TL;DR: In this article, the authors investigated the physical origins of the anti-ferromagnetic exchange interaction of ferromagnetic La2/3Sr1/3MnO3/SrRuO3 bilayers reported to have a positive exchange bias.
24 citations
••
TL;DR: The results suggest that vmPFC is a crucial part of the neurobiological system that supports the ability to synchronize conversational rhythms by dynamically adjusting behavior to the social environment.
Abstract: Objective During conversation, people tend to converge and become more similar across discourse characteristics, such as producing similar speaking turn lengths and even similar words. This "conversational synchrony" enhances social affiliation and rapport. Here, we investigated the role of the ventromedial prefrontal cortex (vmPFC) in conversational synchrony. We focused on the vmPFC because this region is strongly implicated in social behaviors related to synchrony, such as empathy. Method To examine the role of the vmPFC role in conversational synchrony, convergence of total words and words per turn were measured in the discourse of participants with bilateral vmPFC damage, healthy comparison participants (CP), and a brain-damaged comparison group with bilateral hippocampal damage (HPC) as they interacted with an unfamiliar partner. Results CP and HPC interactions displayed convergence as the interactants' productions of words and words per turn became more similar across the sessions. In striking contrast, vmPFC interactions did not display convergence for either variable. A follow-up experiment revealed the same lack of convergence in the interactions of vmPFC participants with a more familiar conversational partner. Conclusions Our results suggest that vmPFC is a crucial part of the neurobiological system that supports the ability to synchronize conversational rhythms by dynamically adjusting behavior to the social environment.
23 citations
Authors
Showing all 495 results
Name | H-index | Papers | Citations |
---|---|---|---|
N. Grau | 86 | 360 | 32602 |
Larry L. Tieszen | 55 | 133 | 13853 |
Thomas W. Boutton | 51 | 164 | 12308 |
Subhash Sharma | 46 | 132 | 16225 |
Michael Pfau | 43 | 88 | 5256 |
Peter Kivisto | 26 | 125 | 3799 |
Susan Zickmund | 26 | 97 | 2328 |
Fred Adams | 26 | 85 | 2450 |
Stephen D. Herrmann | 20 | 48 | 5262 |
Tyler S. Lorig | 18 | 41 | 1299 |
Roy A. Johnson | 17 | 61 | 978 |
Robert E. Wright | 16 | 81 | 833 |
Ashish Tiwari | 16 | 45 | 1148 |
Rafael Medina | 15 | 42 | 1016 |
Bradley J. Cosentino | 15 | 38 | 652 |