State Water Resources Research Institute Program
Project Id: 2010NY134B
Title: Rock snot in sick rivers: What are the environmental drivers controlling blooms of the invasive diatom Didymospehnia geminata in the Northeastern and Mid-Atlantic U.S.?
Project Type: Research
Start Date: 3/01/2010
End Date: 2/28/2011
Congressional District: 22
Focus Categories: Invasive Species, Surface Water
Principal Investigator: Richardson, David
Federal Funds: $ 0
Non-Federal Matching Funds: $ 59,622
Abstract: Rock snot, Didymospehnia geminata, is a nuisance alga that has increased in abundance in streams and rives worlwide in recent decades. D.germinata is informally called "rock snot" because during blooms the diatoms prodiuce copious amounts of extracellualr polysaccharide stalks which resemble mucus. The causes and range of expansion of D.germinata is not well understood. In this study we will focus on the influence of abiotic variables including climate, land-use, water chemistry, and hydrology on the growth of D.germinata in relation to a natural geographic gradient and experimental manipulations. Field measurements as well as more controlled in situ experiments will be conducted at 6 study sites (5 in NY and 1 in Md).
Progress/Completion Report, 2010, PDF