Dumping military waste into Lake Superior: the historic legacies of secrecy, censorship, and uncertainty.

In recent years, the issue of military waste disposal in oceans and seas has gained significant attention; however, the impact of such waste in freshwater deposits has been understudied. The Laurentian Great Lakes of North America contain 20% of the world's fresh surface water and are particularly vulnerable to environmental stressors such as climate change, invasive species, and toxic chemicals, making the examination of military waste management in these waters crucial. This interdisciplinary study aims to investigate the legacy of two military waste disposal sites in Lake Superior, referred to as Site A (containing barrels) and Site B (containing bullets). Both are located within the ceded territories of the Ojibwe. Despite being in close proximity, these sites have had vastly different outcomes in terms of public concern, state and federal regulatory actions, and tribal restoration efforts. Based on this observation, this study aims to answer the following questions: How did these differences develop? How did military secrecy and the loss of memory influence the management of underwater military waste at each site? How do uncertainties and rumors continue to influence citizen concern and agency management of military waste? We argue for the importance of investigating the environmental legacies of underwater military waste in order to protect inland freshwater resources worldwide.

A spatial evaluation of historic iron mining impacts on current impaired waters in Lake Superior's Mesabi Range.

This paper examines the water quality legacies of historic and current iron mining in the Mesabi Range, the most productive iron range in the history of North America, producing more than 42% of the world's iron ore in the 1950s. Between 1893 and 2016, 3.5 × 109 t of iron ore were shipped from the Mesabi Range to steel plants throughout the world. We map historic sites and quantities of iron mining, ore processing, water use, and tailings deposition within subwatershed boundaries. We then map the locations of impaired lakes within HUC-12 subwatershed boundaries within the Mesabi Range, using government datasets created for US federal Clean Water Act reporting. Comparing watersheds with and without historic mining activity, watersheds with historic mining activity currently contain a greater percentage of impaired lakes than control watersheds within the same range. These results suggest that historic iron ore mining and processing in the Mesabi Range affected water quality on a landscape scale, and these legacies persist long after the mines have closed. This paper outlines a novel spatial approach that land managers and policy makers can apply to other landscapes to assess the effects of past mining activity on watershed health.

Changing ideas in forestry: A comparison of concepts in Swedish and American forestry journals during the early twentieth and twenty-first centuries.

By combining digital humanities text-mining tools and a qualitative approach, we examine changing concepts in forestry journals in Sweden and the United States (US) in the early twentieth and early twenty-first centuries. Our first hypothesis is that foresters at the beginning of the twentieth century were more concerned with production and less concerned with ecology than foresters at the beginning of the twenty-first century. Our second hypothesis is that US foresters in the early twentieth century were less concerned with local site conditions than Swedish foresters. We find that early foresters in both countries had broader-and often ecologically focused-concerns than hypothesized. Ecological concerns in the forestry literature have increased, but in the Nordic countries, production concerns have increased as well. In both regions and both time periods, timber management is closely connected to concerns about governance and state power, but the forms that governance takes have changed.

Inspiration for aspirations: Virginia nurse insights about BSN progression.

The Partnerships for Progression: Inspiration for Aspirations project was developed to create a culture of academic progression for nurses in Virginia. A survey was completed by 128 nurses who are currently enrolled in Registered Nurse to Bachelor of Science in Nursing programs throughout Virginia to learn why registered nurses pursue the bachelor of science degree (BSN) and to identify supports and obstacles that influence their experiences. Findings indicate that BSN progression is influenced by an interacting set of personal, work, and educational factors. Family support was cited as the most important facilitator for returning to school, yet time demands of balancing family, work, and school were seen as major obstacles to continuation. Internal motivation may differentiate nurses who return to school from those who do not. Determining ways to inspire nurses while implementing practical steps for enabling nurses to pursue a BSN and succeed once they enroll is the challenge for nursing service and educational organizations.

Partnerships and new learning models to create the future perioperative nursing workforce.

To create new and sustainable approaches for development of the perioperative nursing workforce, perioperative nursing leaders at a hospital collaborated with administrators and faculty at a school of nursing to create an innovative learning model that reintroduces perioperative experiences to students in a nursing baccalaureate program. Key components of the initial approaches included an externship for nursing students and a revised internship for experienced nurses who wished to work in perioperative nursing. Project leaders then expanded the nursing student learning opportunity by adding two additional elective perioperative courses to the curriculum. Formation of perioperative clinical placement sites within the senior-level adult acute care course was an additional positive outcome of these initial initiatives. These initiatives resulted in decreased use of agency nurses at the clinical site where the externships take place and increased numbers of younger nurses working in the perioperative areas where they externed, with high levels of satisfaction reported by nurses involved in the program. Through this innovative collaboration, the perioperative nurse shortage at the hospital has abated, and the opportunity to continually recruit new colleagues into the practice of perioperative nursing has been established.

BODY SIZE AND HAREM SIZE IN MALE RED-WINGED BLACKBIRDS: MANIPULATING SELECTION WITH SEX-SPECIFIC FEEDERS.

We experimentally manipulated the strength of selection in the field on red-winged blackbirds (Agelaius phoeniceus) to test hypotheses about contrasting selective forces that favor either large or small males in sexually size dimorphic birds. Selander (1972) argued that sexual selection favors larger males, while survival selection eventually stabilizes male size because larger males do not survive as well as smaller males during harsh winters. Searcy (1979a) proposed instead that sexual selection may be self limiting: male size might be stabilized not by overwinter mortality, but by breeding-season sexual selection that favors smaller males. Under conditions of energetic stress, smaller males should be able to display more and thus achieve higher reproductive success. Using feeders that provisioned males or females but not both, we produced conditions that mimicked the extremes of natural conditions. We found experimental support for the hypothesis that when food is abundant, sexual selection favors larger males. But even under conditions of severe energetic stress, smaller males did not gain larger harems, as the self-limiting hypothesis predicted. Larger males were more energetically stressed than smaller males, but in ways that affected their future reproductive output rather than their current reproductive performance. Stressed males that returned had smaller wings and tails than those that did not return; among returning stressed males, relative harem sizes were inversely related to wing and tail length. Thus, male body size may be stabilized not by survival costs during the non-breeding season, nor by energetic costs during the breeding season, but by costs of future reproduction that larger males pay for their increased breeding-season effort.

THE EVOLUTION OF FEMALE BODY SIZE IN RED-WINGED BLACKBIRDS: THE EFFECTS OF TIMING OF BREEDING, SOCIAL COMPETITION, AND REPRODUCTIVE ENERGETICS.

We examined opposing selective forces on female body size in the sexually dimorphic red-winged blackbird: social competition favoring larger females, and energetic advantages favoring smaller females. Downhower proposed that selection might drive female birds to be smaller than the optimum for survival, if smaller females were able to exceed their energetic requirements for self-maintenance earlier in the season and therefore breed earlier. Since in most birds the earliest breeders fledge the most young, this could favor the evolution of smaller female size, and therefore contribute to the magnitude of sexual size dimorphism in these birds. We tested this hypothesis in 1987 and 1988 by comparing the size and breeding date of female red-winged blackbirds. Consistent with our preditions, early-nesting females had much higher nesting success, but contrary to prediction, larger females bred earlier. We then examined the effects of female size on competition. If large females have an advantage in social competition, and if competition influences breeding date and reproductive success, then larger females might breed earlier. Primary females, the first females to arrive and nest on a territory, were more aggressive than lower ranked females; more aggressive females settled on better territories and laid earlier than less aggressive females; and larger females were more aggressive. Social competition between females may therefore favor large females. Finally, we tested the prediction that selection favoring large females might be limited by energetic constraints on large females. We found that large females had less fat than small females during breeding, and that the levels of fat that females of a given size carried affected breeding date and egg size. Therefore, social competition may favor large females, but reproductive energetics favoring smaller females may constrain selection for large female body size.