Digital Commons Network^™

Does Detection Range Matter For Inferring Social Networks In A Benthic Shark Using Acoustic Telemetry?, Johann Mourier, Nathan Charles Bass, Tristan L. Guttridge, Joanna Day, Culum Brown

Culum Brown, PhD

Accurately estimating contacts between animals can be critical in ecological studies such as examining social structure, predator–prey interactions or transmission of information and disease. While biotelemetry has been used successfully for such studies in terrestrial systems, it is still under development in the aquatic environment. Acoustic telemetry represents an attractive tool to investigate spatio-temporal behaviour of marine fish and has recently been suggested for monitoring underwater animal interactions. To evaluate the effectiveness of acoustic telemetry in recording interindividual contacts, we compared co-occurrence matrices deduced from three types of acoustic receivers varying in detection range in a benthic shark species. Our …

Encoding Of Emotional Valence In Wild Boar (Sus Scrofa) Calls, Anne-Laure Maigrot, Edna Hillmann, Elodie Briefer

Elodie Briefer, PhD

Measuring emotions in nonhuman mammals is challenging. As animals are not able to verbally report how they feel, we need to find reliable indicators to assess their emotional state. Emotions can be described using two key dimensions: valence (negative or positive) and arousal (bodily activation or excitation). In this study, we investigated vocal expression of emotional valence in wild boars (Sus scrofa). The animals were observed in three naturally occurring situations: anticipation of a food reward (positive), affiliative interactions (positive), and agonistic interactions (negative). Body movement was used as an indicator of emotional arousal to control for the effect of …

Exploring Places Of Street Drug Dealing In A Downtown Area In Brazil: An Analysis Of The Reliability Of Google Street View In International Criminological Research, Elenice De Souza Oliveira, Ko-Hsin Hsu

Elenice De Souza Oliveira

This study assesses the reliability of Google Street View (GSV) in auditing environmental features that help create hotbeds of drug dealing in Belo Horizonte, one of Brazil’s largest cities. Based on concepts of “crime generators” and “crime enablers,” a set of 40 items were selected using arrest data related to drug activities for the period between 2007 and 2011. These items served to develop a GSV data collection instrument used to observe features of 135 street segments that were identified as drug dealing hot spots in downtown Belo Horizonte. The study employs an intra-class correlation (ICC) statistics as a measure …

Cross-Modal Recognition Of Familiar Conspecifics In Goats, Benjamin J. Pitcher, Elodie F. Briefer, Luigi Baciadonna, Alan G. Mcelligott

Elodie Briefer, PhD

When identifying other individuals, animals may match current cues with stored information about that individual from the same sensory modality. Animals may also be able to combine current information with previously acquired information from other sensory modalities, indicating that they possess complex cognitive templates of individuals that are independent of modality. We investigated whether goats (Capra hircus) possess cross-modal representations (auditory–visual) of conspecifics. We presented subjects with recorded conspecific calls broadcast equidistant between two individuals, one of which was the caller. We found that, when presented with a stablemate and another herd member, goats looked towards the caller sooner and …

Stable Isotopic Niche Predicts Fitness Of Prey In A Wolf–Deer System, C. T. Darimont, P. C. Paquet, T. E. Reimchen

Chris Darimont, Ph.D.

Interindividual variation in niche presents a potentially central object on which natural selection can act. This may have important evolutionary implications because habitat use governs a suite of selective forces encountered by foragers. In a free‐living native black‐tailed deer, Odocoileus hemionus, population from coastal British Columbia, we used stable isotope analysis to identify individual variation in foraging niche and investigated its relationship to fitness. Using an intragenerational comparison of surviving and nonsurviving O. hemionus over 2 years of predation by wolves, Canis lupus, we detected resource‐specific fitness. Individuals with isotopic signatures that suggested they foraged primarily in cedar ( …

Aggregate-Level Lead Exposure, Gun Violence, Homicide, And Rape, Brian B. Boutwell, Erik J. Nelson, Zhengmin Qian, Michael G. Vaughn, John P. Wright, John P. Wright, Kevin M. Beaver, Kevin M. Beaver, J. C. Barnes, Melissa Petkovsek, Roger Lewis, Mario Schootman, Richard Rosenfeld

Richard Rosenfeld

Cross-Modal Recognition Of Familiar Conspecifics In Goats, Benjamin J. Pitcher, Elodie F. Briefer, Luigi Baciadonna, Alan G. Mcelligott

Alan G. McElligott, PhD

When identifying other individuals, animals may match current cues with stored information about that individual from the same sensory modality. Animals may also be able to combine current information with previously acquired information from other sensory modalities, indicating that they possess complex cognitive templates of individuals that are independent of modality. We investigated whether goats (Capra hircus) possess cross-modal representations (auditory–visual) of conspecifics. We presented subjects with recorded conspecific calls broadcast equidistant between two individuals, one of which was the caller. We found that, when presented with a stablemate and another herd member, goats looked towards the caller sooner and …

Disability And Accessibility In The Library And Information Science Literature: A Content Analysis, Heather Hill

Heather Hill

The library profession is often a strong and vocal proponent of increased access for persons with disabilities. With the profession's long-standing interest in the subject of services to persons with disabilities come questions that get to how the profession perceives the phenomenon. How is library and information science (LIS), as a field, conceptualizing disability and accessibility? The space for examining this question is a content analysis of the LIS literature. The literature provides a fertile ground for study as it reflects the profession's approaches to, and perceptions of, a topic. This research identifies the major issues and trends in the …

Racial/Ethnic Minority Segregation And Low Birth Weight: A Comparative Study Of Chicago And Toronto Community-Level Indicators, Fernando De Maio, Raj C. Shah, Kellie Schipper, Realino Gurdiel, David Ansell

Fernando De Maio

Animal Minds, Cognitive Ethology, And Ethics, Colin Allen, Marc Bekoff

Marc Bekoff, PhD

Our goal in this paper is to provide enough of an account of the origins of cognitive ethology and the controversy surrounding it to help ethicists to gauge for themselves how to balance skepticism and credulity about animal minds when communicating with scientists. We believe that ethicists’ arguments would benefit from better understanding of the historical roots of ongoing controversies. It is not appropriate to treat some widely reported results in animal cognition as if their interpretations are a matter of scientific consensus. It is especially important to understand why loose references to ‘‘cognitive ethology’’ by philosophers can signal ignorance …

Microhabitat Use Affects Brain Size And Structure In Intertidal Gobies, Gemma E. White, Culum Brown

Culum Brown, PhD

The ecological cognition hypothesis poses that the brains and behaviours of individuals are largely shaped by the environments in which they live and the associated challenges they must overcome during their lives. Here we examine the effect of environmental complexity on relative brain size in 4 species of intertidal gobies from differing habitats. Two species were rock pool specialists that lived on spatially complex rocky shores, while the remainder lived on dynamic, but structurally simple, sandy shores. We found that rock pool-dwelling species had relatively larger brains and telencephalons in particular, while sand-dwelling species had a larger optic tectum and …

Gait Transition Dynamics Are Modulated By Experimental Protocol, Mohammad Abdolvahab, Jason Gordon

Mohammad Abdolvahab

No abstract provided.

Physiological And Genetic Correlates Of Boldness: Characterising The Mechanisms Of Behavioural Variation In Rainbow Trout, Oncorhynchus Mykiss, Jack S. Thomson, Phillip C. Watts, Tom G. Pottinger, Lynne U. Sneddon

Lynne Sneddon, PhD

Bold, risk-taking animals have previously been putatively linked with a proactive stress coping style whereas it is suggested shyer, risk-averse animals exhibit a reactive coping style. The aim of this study was to investigate whether differences in the expression of bold-type behaviour were evident within and between two lines of rainbow trout, Oncorhynchus mykiss, selectively bred for a low (LR) or high (HR) endocrine response to stress, and to link boldness and stress responsiveness with the expression of related candidate genes. Boldness was determined in individual fish over two trials by measuring the latency to approach a novel object. Differences …

A Review Of Urban Ecosystem Services: Six Key Challenges For Future Research, C Luederitz, E Brink, F Gralla, V Hermelingmeier, M Meyer, L Niven, L Panzer, S Partelow, A-L Rau, R Sasaki, D Abson, D Lang, Christine Wamsler, H Von Wehrden

Christine Wamsler

Abstract Global urbanization creates opportunities and challenges for human well-being and transition towards sustainability. Urban areas are human-environment systems that depend fundamentally on ecosystems, and thus require an understanding of the management of urban ecosystem services to ensure sustainable urban planning. The purpose of this study is to provide a systematic review of urban ecosystems services research, which addresses the combined domain of ecosystem services and urban development. We examined emerging trends and gaps in how urban ecosystem services are conceptualized inp eer-re viewed case study literature, including the geographical distribution of research, the development and use of the urban …

An Assessment Of South China Tiger Reintroduction Potential In Hupingshan And Houhe National Nature Reserves, China, Yiyuan Qin, Philip J. Nyhus, Courtney L. Larson, Charles J.W. Carroll, Jeff Muntifering, Thomas D. Dahmer, Lu Jun, Ronald L. Tilson

Philip J. Nyhus

Human-caused biodiversity loss is a global problem, large carnivores are particularly threatened, and the tiger (Panthera tigris) is among the world’s most endangered large carnivores. The South China tiger (Panthera tigris amoyensis) is the most critically endangered tiger subspecies and is considered functionally extinct in the wild. The government of China has expressed its intent to reintroduce a small population of South China tigers into a portion of their historic range as part of a larger goal to recover wild tiger populations in China. This would be the world’s first major tiger reintroduction program. A free-ranging population of 15–20 tigers …

Paul Farmer: Structural Violence And The Embodiment Of Inequality, Fernando De Maio

Fernando De Maio

No abstract provided.

Why You Should Care About The Threatened Middle Class, Jill Littrell, Fred Brooks, Jan Ivery, Mary Ohmer

jill l littrell Dr.

In the last two decades, the income and security of the individual middle class worker has declined and the gap between the middle class and the wealthy has widened. We explain how this is bad for democracy, the economy, and the aggregate health of the nation. We examine the governmental policies and interventions that increased the middle class following the depression and maintained its vigor through the post-World War II period. The impetus for these changes in governmental policies in the 1930s was to end the Great Depression. We pose the question of whether a nation can recover from a …

Health Professionals’ Roles In Animal Agriculture, Climate Change, And Human Health, Aysha Z. Akhtar, Michael Greger, Hope Ferdowsian, Erica Frank

Michael Greger, MD, FACLM

What we eat is rapidly becoming an issue of global concern. With food shortages, the rise in chronic disease, and global warming, the impact of our dietary choices seems more relevant today than ever. Globally, a transition is taking place toward greater consumption of foods of animal origin, in lieu of plantbased diets. With this transition comes intensification of animal agriculture that in turn is associated with the emergence of zoonotic infectious diseases, environmental degradation, and the epidemics of chronic disease and obesity. Health professionals should be aware of these trends and consider them as they promote healthier and more …

Green Cities, The Search For Sustainability, And Urban Environmental History, Christopher Wells

Christopher W. Wells

No abstract provided.

Ethnoarchaeology As A Strategy For Building Frames Of Reference For Research Problems, Pei-Lin Yu

Pei-Lin Yu

Ethnoarchaeology is a powerful strategy for structuring archaeological research questions that uses ethnographic information to make inferences about the material residues of past human activities. Ethnoarchaeology is not a theoretical approach per se, so it can investigate research questions generated from a wide variety of theoretical perspectives. Ethnoarchaeological scopes and scales of research are expanding rapidly in geography, chronology, method, and theoretical stance, from variables conditioning the manufacture of traditional technology to the evolution of symbolic expression and ritual behaviors.

Importance Of School Library Programs, Cynthia Strong

Cynthia Strong

Within the discipline of library science, over 20 research studies have been done in the United States attesting to how quality school library programs contribute to improved academic achievement. On the other hand, in the fields of education, school counseling, administration, and school leadership, and so on, there is a dearth of scholarship and recognition of the positive impact librarians and library media program have on student success. This conceptual paper first presents an overview of the empirical research on school library programs and the positive impact they have on the academic achievement of students in the United States. Second, …

Farm Chemicals As Indicators Of Sediment Sources In Iowa Rivers, George P. Malanson, E. N. Nealson

George P Malanson

Determination of the source of sediment in rivers and streams is important in order to effectively implement a program to reduce its concentration. This project uses agricultural chemicals as indicators of current sources of sediment from farm fields in the Cedar River, Iowa watershed. We hypothesized that the relations of sediment, nitrogen, and phosphorous yields to precipitation would indicate whether sediment originated from erosion of fields or from channel bank erosion of floodplains. The changes in sediment, nitrate, and phosphorus in the channel in response to rainfall events were determined. In simple regressions, all three variables have similar slopes when …

Habitat And Plant Distributions In Hanging Gardens Of The Narrows, Zion National Park, Utah, George P. Malanson

George P Malanson

No abstract provided.

A Sense Of Home: A Cultural Geography Of The Leschenault Estuary, Sandra Wooltorton

Sandra Wooltorton

Refeeding After Acute Food Restriction: Differential Reduction In Preference For Ethanol And Ethanol-Paired Flavors In Selectively Bred Rats., Nancy K. Dess, C. D. Chapman, L. A. Cousins, D. C. Monroe, P. Nguyen

Nancy K Dess

Rats' voluntary ethanol intake varies with dispositional factors and energy status. The joint influences of these were of interest here. We previously reported that rats selectively bred for high voluntary saccharin intake (HiS) consume more ethanol and express more robust conditioning of preference for flavors paired with voluntarily consumed ethanol than do low-saccharin consuming counterparts (LoS). Three new experiments examined the effect of refeeding after an episode of food restriction on ethanol intake and on preference for ethanol-paired flavors in HiS and LoS rats. A 48-h episode of food restriction with wheel running reduced intake of and preference for 4% …

The Role Of Alcohol In Forging And Maintaining Friendships Amongst Scottish Men In Mid-Life, Carol Emslie, Kate Hunt, Antonia Lyons

Dr Carol Emslie

Objective: Men drink more heavily and are more likely to die from alcohol-related causes than women. Most alcohol research focuses on young drinkers. We describe the context of men’s drinking in mid-life and explore how alcohol is associated with the construction of masculinities.

Methods: Qualitative research was used to examine the social context of drinking alcohol. We conducted 15 focus groups (single and mixed sex) with respondents in the west of Scotland, UK. Here, we focus on the findings from 22 men aged 28 to 52 years.

Results: Men regarded drinking pints of beer in the pub together as an …

Health Care And Hiv Testing Experiences Among Black Men In The South: Implications For "Seek, Test, Treat And Retain" Hiv Prevention Strategies, Rupali K. Doshi, David J. Malebranche, Lisa Bowleg, Thurka Sangaramoorthy

David J Malebranche

Few studies have explored how overall general health care and HIV/STI testing experiences may influence receipt of ‘‘Seek, Test, Treat, and Retain’’ (STTR) HIV prevention approaches among Black men in the southern United States. Using in-depth qualitative interviews with 78 HIV-negative/unknown Black men in Georgia, we explored factors influencing their general health care and HIV/STI testing experiences. The Andersen behavioral model of health care utilization (Andersen model) offers a useful framework through which to examine the general health care experiences and HIV testing practices of Black men. It has four primary domains: Environment, Population characteristics, Health behavior, and Outcomes. Within …

Gatekeeper Training As A Preventative Intervention For Suicide: A Systematic Review, Michael Isaac, Brenda Elias, Laurence Y. Katz, Shay-Lee Belik, Frank P. Deane, Murray W. Enns, Jitender Sareen

Frank Deane

Gatekeeper training is successful at imparting knowledge, building skills, and molding the attitudes of trainees; however, more work needs to be done on longevity of these traits and referral patterns of gatekeepers. There is a need for randomized controlled trials. In addition, the unique effect of gatekeeper training on suicide rates needs to be fully elucidated.

Death By A Thousand Curb-Cuts: Evidence On The Effect Of Minimum Parking Requirements On The Choice To Drive, Rachel R. Weinberger

Rachel R Weinberger

Little research has been done to understand the effect of guaranteed parking at home –in a driveway or garage—on mode choice. The research presented here systematically examines neighborhoods in the three New York City boroughs for which residential, off-street parking is possible but potentially scarce. The research is conducted in two stages. Stage one is based on a Google Earth© survey of over 2,000 properties. When paired with the City’s tax lot database, that survey served as the basis to estimate on-site parking for New York City neighborhoods. With parking availability estimated, a generalized linear model based on census tracts …

Unearthing The Infrastructure: Humans And Sensors In Field-Based Scientific Research, Matthew S. Mayernik, Jillian C. Wallis, Christine L. Borgman

Christine L. Borgman

Distributed sensing systems for studying scientific phenomena are critical applications of information technologies. By embedding computational intelligence in the environment of study, sensing systems allow researchers to study phenomena at spatial and temporal scales that were previously impossible to achieve. We present an ethnographic study of field research practices among researchers in the Center for Embedded Networked Sensing (CENS), a National Science Foundation Science & Technology Center devoted to developing wireless sensing systems for scientific and social applications. Using the concepts of boundary objects and trading zones, we trace the processes of collaborative research around sensor technology development and adoption …