We introduce the "Whitehead complex", a one-complex associated to a finite regular cover of the rose and show that it is connected if and only if the fundamental group of the associated cover is generated by its intersection with the set of elements in proper free factors of the fundamental group of the rose. The Whitehead complex admits…

Dissertation objectives included investigating how environment and plant life history influence aspects of leaf vascular infrastructure that supports photosynthesis, as well as photoprotection of the photosynthetic process. Additionally, I aimed to engage students in science and plant biology through innovative teaching methods. In summer annual…

Giant kelp ("Macrocystis pyrifera") forests are icons of marine beauty, acting as critical marine ecosystems with great ecological and economic value. Kelp forests are hot spots for biodiversity and provide myriad ecosystem services such as nursery habitat for commercial fisheries, nutrient cycling, wave attenuation, as well as…

There is a problem in Minneapolis communities at the intersection of ecological and social systems. Despite efforts to use native prairie plants for cleaning water, the social justice stories connected to native prairie plants were being ignored. This problem has negatively impacted communities because native prairie plants can be an educational…

This study addressed the following research questions: 1) What is the effect of differentiated gamified instruction on the cognitive engagement of ninth grade students in the unit of plant and animal systems? 2) What is the effect of differentiated gamified instruction on the behavioral engagement of ninth grade biology students in the unit of…

Interactions between plants, soil, and herbivores can shape plant community dynamics and ecosystem processes. My research addresses gaps in understanding of plant-soil-herbivore interactions in urban woodlands and how to improve critical thinking and literacy about urban woodland ecology through community-engaged learning. I employed greenhouse…

The purpose of this multiple case study was to explore affordances for STEM-related skills in a nature preschool in central Texas. Observations were conducted along with the collection of videos and photographs of four preschool-aged participants. Informal interviews were also implemented during data collection and observations. Semi-formal…

Soft rot diseases cause crop losses all over the world. These losses can have large economic impacts and threaten international food security. Soft rot bacterial pathogens produce pectolytic enzymes that attack the pectin around plant cells resulting in smelly, wet, and mushy tissue maceration. Once symptoms are visible, the crop cannot be used or…

Humans have long sought to understand the forces that shape the diversity of living creatures on our planet. This work is primarily concerned with examining one such force--the historical action of natural selection--from practical, philosophical, and pedagogical perspectives. The first half is concerned with a suite of genetic mechanisms in…

This qualitative, exploratory, comparative case study examined plant-based innovations in Title I PK12 public-school nutrition programs (PSNPs) in the context of the School Health Index (SHI) and Whole School, Whole Community, Whole Child (WSCC) objectives. The study explored the perceptions of PK12 superintendents, school board members, nutrition…

Research shows that many citizens have misconceptions about the source of their food and fiber. Several organizations have developed agriculture-based curriculum in an effort to increase agricultural literacy. Although there are a number of resources available to teachers, it is unclear which resources are being used and how often they are being…

Currently there is no urban forestry and natural resources curriculum available to Louisiana K-12 students. In addition, there has not been any assessment of the perception, willingness of teachers and or students in Louisiana for Urban Forestry. This study assessed the above gaps in urban forestry and natural resources education and addressed the…

Cloud-based geospatial technologies are rapidly improving the flow of information from the environment to end-users. Cloud-based photo storage websites were used to create and manage species and spatial-temporal metadata in a digital photographic inventory of plant flowering observations collected at Lake Issaqueena, SC from January, 2012 to…

Perhaps the most influential device in modern society is the smartphone. Over 90% of Americans aged 18-29 own a smartphone and 74% of teenagers reported using a smartphone as their primary internet connection. Students perceived that using smartphones in the classroom aided learning. However, two-thirds of American high schools ban students from…

One of the challenges humans face is making collective decisions with regards to controversial issues related to science, namely socio-scientific issues (SSIs). Genetic modification, nuclear energy, experimental drugs, 5G technology are a few examples of SSIs. Some of the concerns posed by such issues are compromise to privacy and identity, threat…