Occurrence of Camponotus Pennsylvanicus (Hymenoptera: Formicidae) in Trees Previously Infested with Enaphalodes Rufulus (Coleoptera: Cerambycidae) in the Ozark Mountains of Arkansas

Black carpenter ants, Camponotus pennsylvanicus (DeGeer), are nearly ubiquitous in North American forests. These ants are documented as predators of red oak borer, Enaphalodes rufulus (Haldeman), a native longhorn beetle that experienced an unprecedented population increase synonymous with an oak decline event in the oak hickory forests of the Ozark Mountains of Arkansas from the late 1990s until 2005. We examined previous red oak borer emergence holes, tree crown conditions, and site aspects in 13 pre-established vegetation monitoring plots and correlated these forest and tree attributes with the presence or absence of black carpenter ants. At each site, all red oaks \u3e 10 cm diameter at breast height were baited for black carpenter ants with a mixture of tuna and honey. Black carpenter ants were more frequently found on trees with low levels of previous red oak borer infestation versus those trees with previously high infestations. These data suggest a potential role for black carpenter ants in the dynamics of red oak borer populations. Distribution of black carpenter ants in red oaks prior to and during the outbreak is unknown. Future investigations should be directed at efforts to understand whether black carpenter ants simply prefer different tree and site attributes than red oak borer or if, via predation, these ants are acting as agents of red oak borer control

Best Practices To Promote Field Science Safety

Interventions are necessary to address the ongoing epidemic of sexual harassment and assault in field settings. An evidence-based approach to identifying specific interventions will be most effective at promoting the safety of scientists. We present the results of a workshop conducted by experts in field biology and the study of sexual harassment and assault that identified a comprehensive set of best practices for individuals and organizations. These recommendations are grounded in peer-reviewed scholarship and are separated into four topics: culture change, accountability, policy development, and reporting. The resulting report of the workshop recommends 44 practices, categorized by the resources required for implementation, the time frame of implementation, and the level of organization responsible for implementation. The best practices that we present are designed to support individuals and organizations in the development of field safety plans

Beyond A Vision For The Future: Tangible Steps To Engage Diverse Participants In Inclusive Field Experiences

Synopsis Recent strides toward improving diversity, equity, and inclusion (DEI) in field biology present a unique opportunity for transdisciplinary exploration of the impacts and state of a topic that has remained hereto largely underexplored and under-discussed in the academic setting. Within current literature, themes of racial and gender inequity, power imbalances, unsafe environments, and underdeveloped infrastructure and resources are widespread. Thus, we organized a symposium that addressed these compelling issues in field biology DEI through a multitude of experiential and academic lenses. This article will orient the reader to the special issue and offer summative goals and outcomes of the symposium that can provide tangible steps toward creating meaningful improvements in the state of DEI and safety in field settings

Gender, Sexual Orientation, Ethnicity and Socioeconomic Factors Influence How Wildland Firefighters Communicate their Work Experiences

As Climates Change, Natural Resource Professionals Are Often Working on the Frontlines of Intensifying Environmental Disasters, Acting in Both Scientific and Emergency Response Roles. One Subset of This Group, Wildland Firefighters Often Engage in Multifaceted Careers that Incorporate Elements of Resource Planning, Conservation Management, Community Disaster Relief, and Operational Management. Despite These STEM Roles and Nearly Half (48%) of Them Having Earned at Least a bachelor\u27s degree, usually in a STEM Field, Wildland Firefighters Are Almost Exclusively Lumped with Emergency Responders in the Scientific Literature. We Surveyed 708 Wildland Firefighters with 9 Open Response Questions as Part of a Larger Survey Asking About Experiences and Attitudes in the United States Federal Workplace. from their Responses and Voluntarily Provided Demographic Data, We Extracted Information About Response Length, Use of Hedges, Tag Questions and Imperatives, Use of Personal Language, Use of Expletives and Derogatory Language, Use of Apologetic Language, and the Types of Responses Provided. We Then Analyzed Whether Certain Demographic and Socioeconomic Factors Were Statistical Predictors of Language Use in Wildland Firefighter Survey Responses with the Goal of Ultimately Providing a Framework for Differentiating and Identifying Factors that May Influence Employee Retention, Attitudes, Morale, and Experiences among Wildland Firefighter Sub-Demographics. We Found that Different Demographic Groups Varied in their Responses to Questions: Minority Groups Used Fewer Words and Were More Likely to Relate Personal Experiences Than Majority Groups

Occurrence of Carpenter Ants in Ozark Forests in Relation to Prescribed Fire and Stand Variables

Fire is a natural abiotic disturbance agent that is important in determining the vegetation patterns observed in many hardwood forests. Although natural fire was suppressed through much of the 20th century, in the late 20th century, fire was reintroduced into many ecosystems in the form of prescribed burning. The effects of fire on insect populations are not well understood. The objective of this study was to assess the effects of prescribed fire, tree species, and tree size on black carpenter ant abundance and distribution. The effects of prescribed fire, tree species group, and tree dbh on black carpenter occurrence were studied using a presence-absence baited test on 3,556 trees in the oak-hickory forests of the Ozark Mountains of Arkansas. Trees were distributed over unburned areas and areas burned in the dormant seasons of 2005, 2006, and 2007. Black carpenter ants occurred most frequently at baits on large red oaks and least frequently at baits on small hickories, suggesting that they preferentially forage on certain tree species and sizes. Occurrence of black carpenter ants varied by fire treatment. Habitat alterations are likely to be a cause of ant occurrence patterns in oak-hickory forests, but additional studies are necessary to understand the mechanism behind this trend

European Fire Ant Presence Decreases Native Arboreal Insect Abundance in Acadia National Park, Maine, USA

This study examines the impacts of European fire ants on arboreal insect abundance and diversity in Acadia National Park, Maine. Abundance and diversity were quantified via arboreal pitfall traps that were checked every three days for 21 days from May to June 2009. In areas infested with European fire ants, arboreal insect abundance declined, but arboreal insect species richness remained unchanged. This study illustrates the importance of examining the ecological links between canopies and leaf litter and demonstrates the breadth of impacts that biological invasions can have in an ecosystem

Short-Term Effects of Prescribed Burning on Ant (Hymenoptera: Formicidae) Assemblages in Ozark Forests

Prescribed fire is a valuable and effective tool in forest management, and understanding the effects of fire on animal communities is increasingly important for monitoring and conservation. We quantified the short-term responses of leaf litter ants to fire in Ozark oak-dominated forests of Arkansas. We repeatedly surveyed litter ants in replicate burned and unburned sites via Berlese extraction, baiting, and hand collecting 30-170 d postfire. We collected 6,301 ants representing 59 species. Cumulative ant species richness was lower in burned forests than in unburned forests. However, differences in average richness and abundance between treatments were inconsistent overtime; lower ant abundance and species richness in burned sites occurred only during the first few months postburn. Ant species composition was very similar between treatments, although some species typically associated within mesic and lowland habitats were found only in unburned forests. We conclude that litter ant communities in Ozark forests, as in other regions, are relatively resilient to the effects of prescribed burning

Effects of Fire Intensity on Litter Arthropod Communities in Ozark Oak Forests, Arkansas, U.S.A.

Fires are a significant source of landscape scale disturbance in forested ecosystems, but fire effects also vary on small spatial scales due to differences in fuel loads and local environmental conditions. We tested the hypothesis that such variation influences post fire arthropod communities and faunal recovery rates on a 1 m2 scale. We measured the abundance and species richness of selected arthropod taxa pre- and post-fire in patches of leaf litter experimentally burned at different intensities. Arthropod abundance declined sharply immediately after a burn and decreased with increasing fire intensity. Consistent with other studies of this system, the effects of fire on arthropod communities were still apparent \u3e 4 w post burn. The abundance of epigeic beetles recovered more quickly than the abundance of ants or springtails in some treatments. Recovery rates also differed among treatments but did not consistently support the prediction that recovery would be faster in plots subject to low intensity burns. We conclude that small scale differences in intensity within prescribed fires have measurable effects on litter arthropod communities in Ozark forests; however, these differences appear to be overshadowed by the more general effects of fire on arthropods

Critical Thermal Maxima and Body Size Positively Correlate in Red Imported Fire Ants, Solenopsis Invicta

Insects possess several physiological and morphological adaptations to high temperatures; in particular, critical thermal maxima may be of increasing importance as climates warm. We sought to determine the relationship between critical thermal maxima and body size in red imported fire ants, Solenopsis invicta. Thermal maxima were measured and regressed against body mass, tibial length, head width including the eyes, and total body length in individuals from 35 fire ant colonies within and around Lubbock, Texas. Major and media workers survived higher temperatures more often than did minor workers. This may relate to surface-area-to-volume ratios, higher desiccation resistance in larger workers, or both; however, further studies are needed to confirm this. These results suggest that body size may be an important predictor of thermal performance for ectotherms