Réhabilitation de tourbières industrielles contaminées par l'eau salée : végétation de marais salés et amendements

Authors: Emond, Catherine
Advisor: Rochefort, LineLapointe, Line
Abstract: Coastal cutover bogs are prone to sea water contamination. It keeps them unvegetated because of salinity, acidity, high water table level and low nutrients availability. We want to encourage plant colonization of those bogs using salt marsh vegetation and amendments. A field experiment aimed to examine whether rock phosphate (P2O5) and dolomitic lime (CaO.MgO) improve growth of (1) Carex paleacea, (2) Spartina pectinata transplants, (3) salt marsh diaspores transfer of different maturity - July, (4) August and (5) a bare peat control. A greenhouse experiment tested the lime dose needed by C. paleacea and S. pectinata. Results showed that P improved growth of all plant treatments because of P deficiency in bogs, while C. paleacea resulted in greater vegetation cover and aerial biomass, and diaspores transfer in higher diversity. Lime failed to improve vegetation growth. Rehabilitation should be done using P, salt marsh diaspores transfer and C. paleacea transplantation.
Document Type: Mémoire de maîtrise
Issue Date: 2013
Open Access Date: 19 April 2018
Permalink: http://hdl.handle.net/20.500.11794/24577
Grantor: Université Laval
Collection:Thèses et mémoires

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