Wetland vegetation monitoring in Cootes Paradise: measuring the response to a fishway/carp barrier

  • Published source details Smith T., Lundholm J. & Simser L. (2001) Wetland vegetation monitoring in Cootes Paradise: measuring the response to a fishway/carp barrier. Ecological Restoration, 19, 145-154.


This study is summarised as evidence for the following.

Action Category

Restore/create freshwater marshes or swamps (multiple actions)

Action Link
Marsh and Swamp Conservation
  1. Restore/create freshwater marshes or swamps (multiple actions)

    A before-and-after study in 1993–1999 of a freshwater marsh in Ontario, Canada (Smith et al. 2001) reported that following multiple restoration interventions, there were increases in emergent vegetation coverage and species richness. Statistical significance was not assessed. In the year before intervention began, the marsh contained 33 ha of emergent vegetation and 17 emergent plant species. After 5–6 years of intervention, there were 51 ha of emergent vegetation and 23 emergent plant species. Four species present in historical records (1950) were not found in the more recent surveys, either before or after intervention. Methods: Multiple interventions were carried out from 1993: planting emergent vegetation, containing sewage overflow, encouraging sustainable land management practices in the watershed and, in 1997, installing a barrier to keep large carp Cyprinus carpio out of the marsh. Emergent vegetation surveys and mapping were carried out before intervention (1993) and after 5–6 years (1998–1999). The study notes likely differences in survey effort and emergent plant definitions between surveys, and that low water levels in 1998–1999 could have contributed to expansion of emergent vegetation.

    (Summarised by: Nigel Taylor)

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