Diatom Diversity and Community Structure Along a Thermal Gradient in the Maple River of Northern Michigan

Articlehttp://deepblue.lib.umich.edu/bitstream/2027.42/96973/1/UMURF-Issue04_2007-AMaguire.pd

Learning to Leap

This article describes the effect of participation in experiential activities in a first-year seminar on students’ perceptions of self-esteem and academic performance in their first semester at Kennesaw State University. Findings suggest that student participants had greater levels of self-esteem and achieved higher grade point averages than their peers who were in first-year seminars that were not experientially oriented. The article concludes with strategies for instructors to use to purposefully incorporate experiential learning into a first-year seminar

University of Michigan Undergraduate Research Forum, Issue 4, Winter 2007

Articlehttp://deepblue.lib.umich.edu/bitstream/2027.42/96977/1/UMURF-Issue04_2007.pd

Prevalence of avian malaria in northern Michigan.

Avian malaria has been shown to have symptoms similar to that of humans, but little has been done to investigate the effects of host species, age, gender, and location found. A total of 189 passerine and Anseriforme species were sampled from Douglas Lake and three mist-netting sites along the Maple River, Emmett County, Michigan from June 22nd to July 12th. The prevalence of malarial infection of Haemoproteus, Plasmodium, and Leucocytozoon was assessed according to infection among specific species of bird; whether the bird was male or female; the age of each bird; and the location found. Forty-five (23.8%) were infected with haematozoa and Leucocytozoon simondi infected 100% of the common merganser (Mergus merganser) and the common raven (Corvis corax) sampled. Out of 159 passerine birds, 17 were infected with Plasmodium sp. Those families with the highest prevalence were the Emberizidae and Parulidae (3.1 and 3.8%, respectively). The prevalence of infection was statistically significant among avian families and locations, but not among ages. A statistical test was not implemented for the prevalence between genders because a great proportion was undetermined.http://deepblue.lib.umich.edu/bitstream/2027.42/55110/1/3555.pdfDescription of 3555.pdf : Access restricted to on-site users at the U-M Biological Station

The effects of temperature on diatom species richness and diversity in a streams lab facility from the Maple River of Northern Michigan.

Botany ResearchThe effects of temperature on diatoms species diversity and species richness were investigated at the University of Michigan Biological Station Streams Lab Facility located in Pellston, MI. Eighteen re-circulating closed PVC flumes were separated into three water treatments (averages of 18.4° C, 20.8° C, and 22.7° C) and water from the Maple River was pumped into each flume to ensure equivalent nutrient and chemical factors. Diatoms grew on ceramic tiles and diatom species composition was measured using species richness, relative abundance, and the Shannon-Weiner species diversity index. A T-test showed significant statistics among various weeks concerning species richness and diversity. As temphttp://deepblue.lib.umich.edu/bitstream/2027.42/57313/4/Mixson_Stephanie_2007.pd

Diatom diversity and community structure along a thermal gradient in the Maple River of northern Michigan

http://deepblue.lib.umich.edu/bitstream/2027.42/55166/1/3612.pdfDescription of 3612.pdf : Access restricted to on-site users at the U-M Biological Station

Adopting a framework to support the process of critical reflection and understanding of online engagement

Extensive literature within the learning sciences addresses the phenomenon of online engagement and strategies that support online learning. However, for academics, there is limited guidance to support them in the processes of reflecting on efforts to facilitate online learner engagement and, ultimately, to use those reflections to redesign approaches to teaching and learning. This paper reports on findings from an international case study that involved a group of interdisciplinary academics engaged in a process of critical reflection, which aimed to increase their understanding of the ways in which online engagement is supported in higher education. Findings from the current study suggested that reference to an online engagement framework heightens the effectiveness of critical reflection by elucidating an awareness of learning about ways of supporting student learning and online engagement to improve student success. The paper offers implications related to reflection on and of practice

Adopting a framework to support the process of critical reflection and understanding of online engagement

Extensive literature within the learning sciences addresses the phenomenon of online engagement and strategies that support online learning. However, for academics, there is limited guidance to support them in the processes of reflecting on efforts to facilitate online learner engagement and, ultimately, to use those reflections to redesign approaches to teaching and learning. This paper reports on findings from an international case study that involved a group of interdisciplinary academics engaged in a process of critical reflection, which aimed to increase their understanding of the ways in which online engagement is supported in higher education. Findings from the current study suggested that reference to an online engagement framework heightens the effectiveness of critical reflection by elucidating an awareness of learning about ways of supporting student learning and online engagement to improve student success. The paper offers implications related to reflection on and of practice

The Effect of Sleep Disorder Diagnosis on Mortality in End-Stage Renal Disease Patients

Increased risk of all-cause mortality not accounted for by traditional cardiovascular risk factors has been linked to chronic kidney disease. This study tested the hypothesis that mortality may be greater in patients with end-stage renal disease (ESRD) and a sleep disorder diagnosis. The United States Renal Data System database was queried to determine the effect of sleep disorder diagnoses on mortality in ESRD patients enrolled between 2004 and 2015. Sleep disorders were identified using International Classification of Diseases-9 and -10 codes. Mortality risk associated with sleep disorders was examined using Cox proportional hazards (CPH) modeling. In the final CPH model, sleep disorder diagnoses were associated with decreased risk of mortality, with hazard ratios (and 95% confidence intervals) for insomnia, hypersomnolence, restless leg syndrome, and obstructive/central sleep apnea of 0.76 (0.75–0.76), 0.81 (0.78–0.84), 0.79 (0.77–0.80), and 0.82 (0.81–0.82), respectively. Black or other race and Hispanic ethnicity, and to a small extent, female sex and increasing Charlson comorbidity index, were also associated with decreased risk, whereas increasing age, hemodialysis (versus peritoneal dialysis) and catheter or graft access type were associated with increased risk. This study suggests that the diagnosis of a sleep disorder may be associated with improved survival in ESRD patients