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Location Canada, Manitoba
Central coordinates 98o 15.14' West  50o 10.49' North
IBA criteria A4i, A4iii
Area 31,000 ha
Altitude 247 - 250m
Year of IBA assessment 2008

Bird Studies Canada/Nature Canada



Site description Delta Marsh is a large wetland comprised of wide shallow bays, sloughs and meadows. It stretches westward from St Laurent to Lynch Point along the southern end of Lake Manitoba. The marsh is separated from the lake by a sand ridge covered with deciduous trees including green ash, Manitoba maple, hackberry, willow and cottonwood. The hackberry stand is the northernmost location for this species within Manitoba. The ridge and associated deciduous forest acts as a natural migrational corridor for landbirds migrating to and from the boreal forest and aspen parklands to the west of Lake Manitoba. The 17,000 ha marsh is one of the largest of several marshes in the Lake Manitoba basin.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Snow Goose Anser caerulescens passage  1995  1,000,000 individuals  A4i  Least Concern 
Western Grebe Aechmophorus occidentalis breeding  1979  1,000 breeding pairs  A4i  Least Concern 
A4iii Species group - waterbirds passage  1979-1995  100,000-499,999 individuals  unknown  A4iii   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Delta Marsh Wetlands of International Importance (Ramsar) 23,000 protected area overlaps with site 24,000  
Lake Francis Wildlife Management Area 6,416 protected area overlaps with site 240  
Portage Community Pasture 5,837 protected area overlaps with site 660  
Portage Regional District Park 5 protected area overlaps with site 650  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Shrubland Scrub  -
Wetlands (inland) Fens transition mires & springs; Freshwater marshes/swamps  -

Land use

Land-use Extent (% of site)
agriculture minor
nature conservation and research minor
hunting major
tourism/recreation major

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Delta Marsh. Downloaded from http://www.birdlife.org on 17/09/2014

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