This dissertation features a set of three sub-studies situated within a larger Critical Participatory Ethnography investigating how participatory science unfolds between youth and scientists to address issues of marine plastic pollution. Collectively the papers provide insights into how to navigate the slippery, but necessary, terrain of teaching…

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…

Multilingual learners (MLs) bring numerous resources to science learning contexts. In classrooms, multilingual learners have expansive linguistic repertoires to draw upon for information-seeking (Gynne & Bagga-Gupta, 2015), collaboration (French, 2016; Garcia & Sylvan, 2011), and learning (Vygotsky, 1978). However, within US secondary…

The magnitude and scale of current threats to ecosystems requires interdisciplinary approaches to both science and training. For example, urbanization has resulted in increased runoff from communities into coastal habitats, necessitating work across the marine-terrestrial interface. This runoff holds myriad pollutants which can impact vulnerable…

Marine communities are experiencing rapid environmental changes including warming temperatures and ocean acidification (OA). For organisms within these communities, responses to ocean change are shaped by population- and community-level interactions which may modify their responses. This dissertation integrates experimental, field, and modeling…

American lobster, "Homarus americanus," H Milne Edwards 1837, are an ecologically, economically, and culturally valuable marine resource for the coastal communities in the Gulf of Maine (GoM). The American lobster fishery is the most valuable commercial fishery in the United States, supporting thousands of jobs and generating hundreds of…

The primary question of my dissertation is, "Does venom possess a microbiome specific to it as an ecosystem, and why?" Given the limited amount of literature on venom microbiomes, I selected the California Cone Snail, "Californiconus californicus" as a proposed, wild model system for studying venom-microbe interactions in the…

Gastropods are a major component of modern marine ecosystems and can be found in nearly every type of marine ecosystem. They experienced their first notable radiation during the Great Ordovician Biodiversification Event (~470 Ma), during which their diversity tripled. This study examines the gastropod assemblage preserved in the Basin and Range…

Red snapper, "Lutjanus campechanus," were sampled with hook and line at natural (n = 33) and artificial (n = 27) reef sites in the northern Gulf of Mexico from 2009-2011. Stomachs (n = 708) were extracted and their contents preserved for gut content analysis, and muscle tissue samples (n = 200) were dissected and frozen for stable…

This dissertation presents three interrelated studies examining opportunities for student learning through contributory citizen science (CS), where students collect and contribute data to help generate new scientific knowledge. I draw on sociocultural perspectives of learning to analyze three cases where teachers integrated CS into school science,…

This dissertation is presented in two sections. First, I explore two methods of using stable isotope analysis to trace environmental and biogeochemical processes. Second, I present two related studies investigating student understanding of the biogeochemical concepts that underlie part one. Fe and Hg are each biogeochemically important elements in…

To protect and conserve the Earth's biodiversity and ecosystem services, it is important not only to understand and conserve species and ecosystems, but also to instill an understanding and appreciation for biodiversity and ecosystem services in the next generations of both scientists and citizens. Thus, this dissertation combines research into…

Those advocating for effective management of the use of coastal areas and ecosystems have long aspired for an approach to governance that includes information systems with the capability to predict the end results of various courses of action, monitor the impacts of decisions and compare results with those predicted by computer models in order to…

Designed to examine the nature of ideas that students hold about specific scientific concepts and to investigate modes of instruction that would effectively help them gain an accurate understanding of their world, this study focused on students' conceptions of ecological concepts and the influence of field instruction strategies on students'…