Faculty Advisor
Brett Klaassen van Oorschot, Rachel E. Pepper
Area of Study
Science and Mathematics
Publication Date
Summer 2022
Abstract
Vorticella convallaria are microscopic sessile suspension feeders which live attached to substrates and are ubiquitous in aquatic environments. They depend on a self-generated current to feed and help maintain the health of aquatic ecosystems by consuming bacteria and detritus. As highly prevalent filter feeders, they serve as biological indicators of ecosystem health and are heavily involved in nutrient and carbon cycling. Furthermore, they are essential to wastewater treatment and benefit bioremediation efforts. However, the conditions in which they collectively thrive and feed most effectively are not well known. We exposed organisms to a circulating flume containing four distinct unidirectional flow regimes of different speeds. Initial results suggest that organisms are significantly more abundant in the slow speeds, in which they are less pushed over and may feed more effectively. Vorticella remained more abundant in the slowest flow speed over time, and became more abundant when the order of flow regimes was reversed (transforming a fast flow regime into one with a slower speed), indicative of selective preference.
Award
biophysics, fluid dynamics, wastewater, filter feeders
Recommended Citation
Bottger, Tia S., "Does environmental flow speed affect the local relative abundance of Vorticella convallaria?" (2022). Summer Research. 451.
https://soundideas.pugetsound.edu/summer_research/451
Rights
Publisher
University of Puget Sound