Dispersal of Contaminants from Municipal Discharges as Evidenced from Sedimentary Records in a Great Lakes Coastal Wetland, Cootes Paradise, Ontario

2008 ◽  
Vol 34 (3) ◽  
pp. 544-558 ◽  
Author(s):  
Tatiana Mayer ◽  
Don Bennie ◽  
Fernando Rosa ◽  
Virginia Palabrica ◽  
Gregory Rekas ◽  
...  
Keyword(s):  
Great Lakes ◽  
Coastal Wetland ◽  
Sedimentary Records ◽  
Great Lakes Coastal Wetland

Turbidity Tolerances of Great Lakes Coastal Wetland Fishes

2007 ◽  
Vol 27 (2) ◽  
pp. 619-633 ◽  
Author(s):  
Anett S. Trebitz ◽  
John C. Brazner ◽  
Valerie J. Brady ◽  
Richard Axler ◽  
Danny K. Tanner
Keyword(s):  
Great Lakes ◽  
Coastal Wetland ◽  
Great Lakes Coastal Wetland

Geographic, anthropogenic, and habitat influences on Great Lakes coastal wetland fish assemblages

2009 ◽  
Vol 66 (8) ◽  
pp. 1328-1342 ◽  
Author(s):  
Anett S. Trebitz ◽  
John C. Brazner ◽  
Nicholas P. Danz ◽  
Mark S. Pearson ◽  
Gregory S. Peterson ◽  
...  
Keyword(s):  
Great Lakes ◽  
Aquatic Vegetation ◽  
Coastal Wetland ◽  
Fish Assemblages ◽  
Fish Habitat ◽  
Water Clarity ◽  
Habitat Associations ◽  
Submerged Vegetation ◽  
Great Lakes Coastal Wetland ◽  
Natural Watersheds

We analyzed data from coastal wetlands across the Laurentian Great Lakes to identify fish assemblage patterns and relationships to habitat, watershed condition, and regional setting. Nonmetric multidimensional scaling (NMDS) ordination of electrofishing catch-per-effort data revealed an overriding geographic and anthropogenic stressor gradient that appeared to structure fish composition via impacts on water clarity and vegetation structure. Wetlands in Lakes Erie and Michigan with agricultural watersheds, turbid water, little submerged vegetation, and a preponderance of generalist, tolerant fishes occupied one end of this gradient, while wetlands in Lake Superior with largely natural watersheds, clear water, abundant submerged vegetation, and diverse fishes occupied the other. Fish composition was also related to wetland morphology, hydrology, exposure, and substrate, but this was only evident within low-disturbance wetlands. Anthropogenic stress appears to homogenize fish composition among wetlands and mask other fish–habitat associations. Because land use is strongly spatially patterned across the Great Lakes and aquatic vegetation is a key habitat element that responds to both biogeography and disturbance, it is difficult to disentangle natural from anthropogenic drivers of coastal wetland fish composition.

scholarly journals Development of an Inventory of Coastal Wetlands for Eastern Georgian Bay, Lake Huron

ISRN Ecology ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-13 ◽  
Author(s):  
Jonathan Midwood ◽  
Daniel Rokitnicki-Wojcik ◽  
Patricia Chow-Fraser
Keyword(s):  
Great Lakes ◽  
Coastal Zone ◽  
Coastal Wetlands ◽  
Coastal Wetland ◽  
Biosphere Reserve ◽  
Coastal Marsh ◽  
High Marsh ◽  
Georgian Bay ◽  
Comprehensive Collection ◽  
Great Lakes Coastal Wetland

Coastal wetlands of eastern Georgian Bay provide critical habitat for a variety of wildlife, especially spawning and nursery habitat for Great Lakes fishes. Although the eastern shoreline has been designated a World Biosphere Reserve by UNESCO, a complete inventory is lacking. Prior effort by the Great Lakes Coastal Wetland Consortium (GLCWC) was unable to fully identify coastal wetland habitat in eastern Georgian Bay due to limited data coverage. Here we outline the methodology, analyses, and applications of the McMaster Coastal Wetland Inventory (MCWI) created from a comprehensive collection of satellite imagery from 2002–2008. Wetlands were manually delineated in a GIS as two broad habitat types: coastal marsh and upstream wetland. Coastal marsh was further subdivided into low marsh (LM; permanently inundated) and high marsh (HM; seasonally inundated) habitat. Within the coastal zone of eastern and northern Georgian Bay there are 12629 distinct wetland units comprised of 5376 ha of LM, 3298 ha of HM and 8676 ha of upstream habitat. The MCWI identifies greater total wetland area within the coastal zone than does the GLCWC inventory (17350 ha versus 3659 ha resp.). The MCWI provides the most current and comprehensive inventory of coastal wetlands in eastern Georgian Bay.

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