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…

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…

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 have been many attempts to address the deficits in traditional teaching methods for decades Multiple studies have been done on the Common Knowledge Construction Model (CKCM) and the results of each study has shown an improvement. The addition of relational conceptual change has added much needed improvement in teaching science. This study,…

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…

Mediocre science achievement and poor STEM graduation rates have prompted educators to reexamine their traditional focus on factual memorization and seek more effective instructional strategies. One such reform-oriented instructional practice is argumentative discourse. Argumentative discourse is student-driven, reasoned argumentation to promote…

Plant awareness disparity (PAD, formerly plant blindness) is the tendency not to notice plants in one's environment. PAD is made of four components: attention (not noticing plants), attitude (not liking plants), knowledge (not understanding why plants are important), and relative interest (being less interested in plants than in animals). This can…

College level botany education in the United States is gradually being phased out of science and agriculture departments. The absence of botany courses creates a problem because there is an increasing need for trained botanist in the United States workforce, making it important to train teachers in botany so they can inspire the next generation of…

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…