BYU

Abstract by Sheena Smithson

Personal Infomation


Presenter's Name

Sheena Smithson

Degree Level

Masters

Abstract Infomation


Department

Geological Sciences

Faculty Advisor

Greg Carling

Title

Phosphorus Cycling in Utah Lake and its Contribution to Harmful Algal blooms

Abstract

Lake eutrophication is a global issue threatening the ecological balance and water quality of many lakes and wetlands. Highly eutrophic lakes, such as Utah Lake, often produce harmful algal blooms (HABs). Understanding how phosphorus (P), a critical limiting agent for HABs, cycles from lake sediments to the water column, is the first step to lake mitigation. Sampling took place across Utah Lake during the summer and fall of 2018. We analyzed the speciation and binding capacity of P in lake sediments, as well as its concentrations in sediments, surface water, and pore water. P concentrations ranged from 484-1109 ppm, with the highest concentration in Provo Bay. This summer we will employ flux chambers throughout the lake to investigate how anoxic conditions affect P cycling.