B32A:
Nutrient Cycling in Wetlands and Aquatic Ecosystems II

Submit an Abstract to this Session

Session ID#: 6867

Session Description:
Nitrogen (N) and phosphorous (P) are limiting nutrients, thus their availability drives ecosystem productivity and functioning. Due to the complexity of N and P cycling resulting from rapid transformations and recycling, little is known about the available forms of these two nutrients and their fate within ecosystems. While many freshwater aquatic ecosystems experience increased loading of both N and P due to anthropogenic inputs, some wetlands (i.e.  northern peatlands) are thought to be N and P-limited. This session therefore welcomes contributions that focus on biogeochemical cycling of N and P in freshwater aquatic ecosystems (lakes, rivers, and streams) and wetlands (freshwater marshes, peatlands and swamps). We encourage contributions that focus on all aspects of N and P cycling, including stoichiometry, inputs, transformations, fate and exports but also effects of N and P on ecosystem functioning.
OSPA Liaison:  Tatjana Živković, McGill University, Geography, Montreal, QC, Canada
Chairs:  Roxane Maranger, Université de Montréal, Sciences biologiques, Montréal, QC, Canada and Julie Talbot, University of Montreal, Department of Geography, Montreal, QC, Canada
Primary Convener:  Julie Talbot, University of Montreal, Department of Geography, Montréal, QC, Canada
Conveners:  Tatjana Živković, McGill University, Geography, Montreal, QC, Canada and Roxane Maranger, Université de Montréal, Montreal, QC, Canada
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0458 Limnology [BIOGEOSCIENCES]
0470 Nutrients and nutrient cycling [BIOGEOSCIENCES]
0497 Wetlands [BIOGEOSCIENCES]

Abstracts Submitted to this Session:

B32A-01
Change in the Nitrogen Saturation Status of Northern Temperate Forests - Will Lakes Face a More Nitrogen-Limited Future? (Invited) (36074)
Irena F Creed, University of Western Ontario, Department of Biology, London, ON, Canada and Eric M Enanga, University of Manitoba, Department of Soil Science, Winnipeg, MB, Canada
B32A-02
Does climate change influence phosphorus sources in lakes (internal versus external) and are they fuelling algal blooms? (36473)
Dolores Planas1, Serge Paquet1 and Limnology, (1)UQAM, Sciences Biologiques, Montreal, Canada
B32A-03
N influence on the bacterial C cycling of a large fluvial lake (35988)
Dan Nguyen and Roxane Maranger, Université de Montréal, Sciences biologiques, Montréal, QC, Canada
B32A-04
They are what We eat : Tracking incorporation of sewage particulates into the food web of a large river ecosystem (36666)
Gilbert Cabana1, Yves Paradis2, Luc Farly1, Katie Roach1, Isabelle Villemure1 and Hélène Glemet1, (1)Université du Québec à Trois-Rivières, Sciences de l'Environnement, Trois-Rivieres, QC, Canada, (2)Ministère des Forêts, de la Faune et des Parcs, Quebec, Canada, QC, Canada
B32A-05
Modeling algal toxin concentrations in a changing world: the importance of cross-scale and space-time interactions (35741)
Zofia Ecaterina Taranu1, Irene Gregory-Eaves2, Russell Steele3, Marieke Beaulieu4 and Pierre Legendre1, (1)University of Montreal, Biological Sciences, Montreal, QC, Canada, (2)McGill University, Biology, Montreal, QC, Canada, (3)McGill University, Mathematics and Statistics, Montreal, QC, Canada, (4)Sherbrooke University, Sherbrooke, QC, Canada
B32A-06
CHANGES IN ANTHROPOGENIC NITROGEN AND PHOSPHORUS INPUTS TO THE ST. LAWRENCE BASIN OVER THE LAST 100 YEARS: IMPACTS ON RIVERINE EXPORT (35929)
Jean-OLivier Goyette, Université de Montréal, Sciences biologiques, Montréal, QC, Canada, Roxane Maranger, Université de Montréal, Montreal, QC, Canada, Elena Bennett, McGill University, Montreal, QC, Canada and Robert Howarth, Cornell University, Ecology & Evolutionary Biology, Ithaca, NY, United States
B32A-07
Nutrient Behavior at the Interface Between Terrestrial and Aquatic Ecosystems : Vegetated Buffer Strips as a Mean for Limiting Nutrient Leaching From Industrial Agricultural Fields to Streams (34468)
Louise Hénault-Ethier1,2, Marc M Lucotte2 and Michel Labrecque3, (1)GEOTOP-UQAM, Département des Sciences de la terre et de l'atmosphère; Institut des sciences de l'environnement, Montréal, QC, Canada, (2)University of Quebec at Montreal UQAM, Montreal, QC, Canada, (3)Université de Montréal, Institut de Recherche en Biologie Végétale (IRBV), Montreal, QC, Canada
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