Abstract Detail

Ecological Section

Collins, Jennifer [1], Martine, Christopher [2].

Hydrocharismorsus-ranae (European frogbit, Hydrocharitaceae):Growth response of an aquatic invasive plant to additions of nitrogen and phosphorous.

Hydrocharis morsus-ranae (Hydrocharitaceae), commonly known as European frog-bit, is a free-floating invasive aquatic plant residing in mostly shallow, marsh-like waters in parts of southern Canada and the northern U.S. The species creates a dense mat of interlocking plants on the surface of the water. European frog-bit is believed to have negative effects on the communities it invades, including impeding water flow and blocking out light that is essential for submerged native flora. These two problems may, in turn, affect native fauna by creating a less oxygen-rich environment and by reducing attachment sites for aquatic invertebrates. The focus of this undergraduate research study, in collaboration with the Lewis Creek Association(Vermont), is to identify the effects of nitrogen and phosphorous inputs on established populations of H.morsus-ranae. Using individuals collected in Lake Champlain, measurements of leaves and rosettes, plus total plant biomass, will be taken as a means to track the influence of nitrogen and phosphorous additions to lake water. Results of the study may influence policy in the Lewis Creek watershed, where agricultural run-off is thought to contribute to the vigor of established H. morsus-ranae populations, thus presenting an additional challenge to ongoing eradication efforts.

Broader Impacts:

1 - SUNY Plattsburgh, Biology, 101 Broad St, Plattsburgh, NY, 12901, USA
2 - State University at Plattsburgh, Biological Sciences, 101 Broad St, Plattsburgh, NY, 12901, USA

Keywords:
Hydrocharis morsus-ranae
Invasive Species
floating aquatic
nitrogen and phosphorous.

Presentation Type: Poster:Posters for Sections
Session: P
Location: Khorassan Ballroom/Chase Park Plaza
Date: Monday, July 11th, 2011
Time: 5:30 PM
Number: PEC019
Abstract ID:559