Author(s): Bernhard Wegscheider; Tommi Linnansaari; Mouhamed Ndong; Katy Haralampides; Andre St-Hilaire; Matthias Schneider; R. Allen Curry

Linked Author(s): Matthias Schneider

Keywords: No Keywords

Abstract: Modelling the linkages between physical habitat and aquatic organisms on multiple spatial scales has become a valuable tool in the management of regulated rivers. Particularly, the distribution and structure of fish communities can be significantly influenced by the physical environment [1]. Traditional approaches are operating at the microhabitat (point) -scale, simulating physical habitat parameters at a high spatial and analytical resolution, aiming to characterize representative abiotic conditions of the river in question [2]. The mesohabitat (local) -scale represents an intermediate resolution in modelling that bridges the gap between available resources and conservation efforts for riverine species. It has been successfully applied to small and medium sized rivers. In large rivers, however, a combination of micro-scale and meso-scale analysis has been recommended, acknowledging a higher proportion of functional habitat that may be important for specialized fish species or life stages [3]. Understanding fundamental abiotic processes that act on multiple spatial scales on fish communities facilitate the development of tools that support decision makers in managing rivers. This study is part of the Mactaquac Ecosystem Study (MAES) and focuses on the effect of different management options of the Mactaquac Generating Station (MGS) and associated reservoir on the surrounding riverine ecosystem, the Saint John River, New Brunswick, Canada.

DOI:

Year: 2018