3,516 research outputs found
Biological Invasion Theory: Darwin's Contributions from The Origin of Species
No full textSupport for this work was provided by (1) a Federal Aid in Sport Fish Restoration Project F-69-P (to R. A. Stein), administered
jointly by the US Fish and Wildlife Service and Ohio Department of Natural Resources-Division ofWildlife, (2) the Department of Evolution, Ecology and Organismal Biology
at The Ohio State University (OSU), and (3) a Presidential Fellowship awarded to S. A. Ludsin by OSU
No. 617 Stuart Ruckman
No full textTranscript (12, 40 pages) of two interviews by Matt Driscoll with Stuart Ruckman on April 9, 2010, and July 7, 2011Ruckman (b. 1966) was born in Salt Lake City, Utah. Stuart shares how his family, particularly his father, played a significant role in introducing him to the outdoors. Some of his initial explorations included a hike to the top of Mount Olympus when he was five years old, backpacking trips in the Wasatch and Uinta Mountains, and a successful summit attempt on the Grand Teton when he was twelve. Stuart discovered technical rock climbing due to the influence of his older brother Bret, five years Stuart\u27s senior. Bret learned under Dennis Turville, a well-respected Salt Lake climbing instructor. Stuart shares his observations on the Salt Lake climbing community of the late 1970s and 1980s, noting the intimacy of the community, while also pointing out the significant influence of a handful of climbers, including Merrill Bitter, Les Ellison, and Brian Smoot. He briefly describes the proliferation of new-route development in the Wasatch during his first decade in climbing. In collaboration with his brother Bret, Stuart published comprehensive guidebooks on climbing in the Wasatch Mountains. Stuart\u27s contributions as a first-ascensionist and co-author of Rock Climbing the Wasatch Range attest to his lasting impact on Utah climbing. Interview is part of the Outdoor Recreation History Project. Interviewer: Matt Driscol
George MacLeod’s open-air preaching: performance and counter-performance
No full textStuart Blythe uses the methodology of performance to analyse George MacLeod’s open-air preaching. He points out that MacLeod’s preaching was derived from a theology of the incarnation, and an understanding of the paradoxes and dichotomies of common human life. This preaching, Blythe suggests, was also a counter-performance in the context of outlooks and ideologies inimical to the gospel. The paper raises interesting issues related to preaching as performance, and the further question as to whether or not the life and work of the Church as a whole might now be better understood as a counter-performance.Publisher PD
Otolith microchemistry as a tool to discriminate between river-spawning populations of walleye (Sander vitreus) in Lake Erie
No full text2014 Natural and Mathematical Sciences Undergraduate Research Forum Poster AwardEffective management of Lake Erie’s walleye (Sander vitreus) fisheries depends on an ability to understand the relative contributions of recruits from local spawning populations (stocks) to the fishable population. To achieve this goal, one must first find a means to discriminate between stocks so that the natal origins of older individuals (i.e., juveniles, adults) can be determined. Natural markers such as the microchemical composition of otoliths (calcified ear stones used for equilibrium and hearing) show great potential to differentiate between individuals originating in different spawning locations with unique water chemistries. However, this technique may be limited for river- or reef-spawning fishes whose young can quickly disperse from their natal site within a matter of days, before the natal-site signature is retained in the otoliths. To better understand the potential value of otolith microchemistry as a tool to discriminate between Lake Erie’s two largest river-spawning stocks, we determined if young larval walleye retain in their otoliths the unique elemental signature that is characteristic of water in their natal (riverine) environment. Towards this end, we used Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS) to analyze the otolith strontium concentration [Sr] of larvae collected from the Sandusky and Maumee Rivers during 1993-1995 and 2011-2012 (n=20 larvae/site/year), and daily ring counts in otoliths were used to age larvae. Our analyses show that otolith [Sr] differed between larvae produced in the Maumee versus Sandusky River, with [Sr] being significantly higher in the Sandusky. Although [Sr] increased with the fish age, differences between rivers were apparent even in otoliths from larvae as young as two days old. Given these findings, otolith microchemistry holds great potential to discriminate between Maumee and Sandusky River spawning stocks, even during years in which larvae are transported out of the river at a young age.Ohio Department of Natural ResourcesThe 2013 Mayers Summer Research Scholarship in the Natural and Mathematical SciencesA one-year embargo was granted for this item.Academic Major: Zoolog
Redemption in the work of Francis Stuart
No full textThe idea of redemption is central to an understanding of the work
of Francis Stuart. Through an examination of its development and
expression, it is possible to demonstrate the integrity of his work and
its distinctive qualities. Such a demonstration is necessary because
Stuart's writing has been subjected to comparatively little scholarly
inquiry, although reviews of his work, especially that produced since
1949, suggest that it is impressive and important.
First, a general background to Stuart's work, a discussion of the
special problems associated with reading it, and a summary of his corpus
is provided. This indicates that the idea of redemption is important to
his earliest writing. The state of redemption is shown to be a
necessary apotheosis for Stuart's outcast heroes; it involves spiritual
suffering through which may be found a sense of reintegration and a
higher reality. This is expressed through interrelated themes such as
those of gambler, artist and ordinary man; mystic and criminal; sacred
and profane love; and spirituality and the mundane. The nature of the
redemptive experience is further elaborated by distinctive, complex
motifs, especially the hare, the ark and the woman-Christ. Their
recurrence provides an important element in the unity of Stuart's work.
Because Stuart's idea of the outcast raises important biographical
questions, an examination of the relationship between Stuart's life and
his work is made. Finally, the way in which the idea of redemption
exists in the language structures of Stuart's novels is examined, with
especial reference to his most recent work, The High Consistory. The
thesis shows that the development of the these of redemption
demonstrates the integrity of Stuart's work
The Extent and spatial scale of connectivity among reef fish populations: implications for marine protected areas designated for fisheries enhancement
No full textEnthusiasm for the use of no-take marine protected areas (MPAs) as management tools for the protection and enhancement of coral reef fishes is widespread. However, evidence that such marine reserves actually enhance fishery yields is limited, primarily because of difficulties in quantifying the exchange of individuals—especially larvae—between local populations within and outside the protected area. Knowledge of the extent and spatial scale of this connectivity is of vital importance for the effective design and implementation of marine reserves intended as fishery management tools. We review our current understanding of connectivity among coral reef populations, including the role of important determining factors such as pelagic larval duration, larval behavior, and hydrodynamics. We also discuss artificial and natural tagging methods that potentially can be used to track movements of larvae between marine reserves and surrounding waters. To illustrate the application of such methods, we discuss ECONAR (Ecological CONnections Among Reefs), a new, regional-scale research project designed to measure the extent of connectivity among populations of coral reef fishes in the Mesoamerican Barrier Reef System
Does the amount of participation matter? Public comments, agency responses and the time to finalize a regulation
No full textThe notice and comment rulemaking process is a fundamental part of how agencies write regulations. While this process is starting to receive more empirical attention, the question of how the number of comments that an agency receives affects its decision-making process has received little examination. This paper uses Boolean analysis to examine nine rules from two agencies at the Department of Health and Human Services and evaluates the impact of a high volume of comments on agency changes to proposed rules and the time an agency takes to finalize a proposed rule. These nine cases suggest that agencies are most likely to change their proposals when they receive a high volume of comments on highly complex rules that are not very politically salient. Highly complex rules are also likely to take a long time to finalize when there are many public comments however it is often other factors that cause a long delay between proposed and final rules.Peer reviewedThe final publication is available at Springer via http://dx.doi.org/10.1007/s11077-007-9051-
Coping with climate change: exploration of metabolic acclimation across generations in a tropical fish.
No full textThe work of this thesis was turned into a poster that received a 2nd place award at the 2017 Denman Undergraduate Research ForumHuman-induced climate change is altering the environment, presenting survival challenges to many organisms. In aquatic environments, rising water temperature is among the most prevalent manifestations of climate change stress. When faced with water warming, one way for populations to persist is for its individuals to acclimate to the new temperature. However, the potential for acclimation may be limited, especially in tropical species that likely evolved in a narrow range of environmental conditions. Herein, we seek to determine the capacity for cross-generational acclimation in Julidochromis ornatus, a tropical cichlid species endemic to, but common in, Lake Tanganyika (East Africa). A previous experiment showed that adult (F0 generation) J. ornatus individuals exposed to the anticipated Lake Tanganyika water temperature at year 2100 (29°C) experienced an increase in mass-specific metabolic rate, which never declined to baseline levels even after 6 mos of exposure and subsequent reductions in reproductive output and age-specific growth rate. By contrast, no change in mass-specific metabolic rate was observed in fish held at baseline (historically normal) temperature (i.e., 25°C). For our study, we quantified the mass-specific metabolic rates of the progeny of these F0 adults (i.e., F1generation individuals), which spent their entire lives in either 25˚C or 29˚C water. In so doing, we tested the hypothesis that the F1generation individuals would have a lower mass-specific metabolic rate at 29°C than F0-generation individuals, owing to maternal (epigenetic) effects. Herein, we present findings regarding the ability of the second (F1) generation individuals to alter their mass-specific metabolic rate and then discuss what these results might mean for population persistence in this and other tropical cichlid species that are experiencing climate-driven water warming.College of Arts and Sciences Undergraduate Research ScholarshipNo embargoAcademic Major: Evolution and Ecolog
Ep. #174 - Stuart Gibbs
No full textThis recording and transcript form part of a collection of podcasts conducted by the Cultures of Energy at Rice University. Cultures of Energy brings writers, artists and scholars together to talk, think and feel their way into the Anthropocene. We cover serious issues like climate change, species extinction and energy transition. But we also try to confront seemingly huge and insurmountable problems with insight, creativity and laughter.FINALLY an episode of the Cultures of Energy podcast that is for once totally wholesome and family-friendly and appropriate to listen to with your kids! Cymene and Dominic share their own thoughts about talking to children about climate change. And then (13:51) we welcome an author that will be well known (especially to listeners aged 8-12 and their families), Stuart Gibbs, the author of the very popular FunJungle, Spy School and Moonbase Alpha middle grade series. Stuart has thematized both climate change and animal conservation in his books and we talk to him about how readers have responded to those interventions, about his writing process in general, and why he thinks it’s important for adults to talk to children honestly about our environmental challenges. If you happen to be in the Houston area on April 30th, please check out Stuart’s reading at the Blue Willow Bookstore, deets here: https://www.bluewillowbookshop.com/event/stu-gibbs-0 PS And, as promised, here are some solid online resources for teaching especially younger kids about climate change and climate action: http://climatechangeconnection.org/resources/climate-friendly-schools/resources-for-schools/; https://www.commonsense.org/education/articles/4-free-tools-to-teach-about-climate-change; https://www.earthguardians.org/50simplethings/; https://thinkprogress.org/how-to-talk-to-a-5-year-old-about-climate-change-ef8ec30b1bd1
Addison A. Stuart
No full textAn obituary for Addison A. Stuart, U.S. Civil War veteran and author of the book Iowa Colonels and Regiments
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