Background Report - Town of Georgina

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Sutton Secondary Plan Review Study May 2008 Existing Environmental Conditions and Opportunities/Constraints Analysis Project No. TA4468 • Habitats of species of conservation concern, excluding the habitats of endangered and threatened species; and • Animal movement corridors. Given the size, habitat diversity and connectivity of the forest and wetland patches within the study area, we would anticipate that portions of the study area (e.g. large, connected forest blocks in the northwest and southeast portions of the study area, Black River corridor, Lake Simcoe shoreline) would support significant wildlife habitat functions, as defined by the PPS. Although portions of the study area have been influenced by existing urban development, the remnant forest/wetland patches within the landscape are of sufficient size and connectivity to support large numbers of resident and summer resident birds. The mixed and coniferous forest stands within the study area have been identified by OMNR and LSRCA as important deer wintering habitat. Deer wintering yards have been identified in the Vachell Swamp (southeast corner of study area) and Sibbald Point Provincial Park (northeast corner of study area). The forest blocks and Black River riparian corridor provide an important linkage function through the study area and connect to large natural areas to the west, east and south of the study area. Various species of waterfowl likely use selective portions of the Black River corridor for staging and nesting. Suitable habitat for a variety of amphibians is also associated with the wetlands and wet-mesic forest blocks in the study area. 3.4 Wildlife Summary Portions of the study area likely comprise Significant Wildlife Habitat, as defined through PPS, in particular the large, intact forest blocks, wetlands, Black River corridor and sections of the Lake Simcoe shoreline. The study area supports a diversity of terrestrial and aquatic wildlife habitat, which is capable of supporting a range of resident, summer resident, migrant and winter visitant animals. LGL Limited environmental research associates Page 6
Sutton Secondary Plan Review Study May 2008 Existing Environmental Conditions and Opportunities/Constraints Analysis Project No. TA4468 The study area supports habitat generalists and edge specialists that are tolerant of near urban conditions, as well as species that require forest-interior conditions and large habitat blocks (e.g. Scarlet Tanager, Wood Thrush, Ovenbird). The study area includes a riparian wildlife pathway (Black River), shoreline (Lake Simcoe) and large, connected forest blocks that provide an important linkage function between natural areas within and adjacent to the study area. The key wildlife habitat function in the study area and surrounding landscape is associated with the Black River corridor (wetland, upland habitat, Greenbelt Plan external connection between Oak Ridges Moraine to the south and Lake Simcoe shoreline to the north) and the large block of forest/wetlands located in the northwest corner of the study area (east-west linkage connection to the Maskinonge River Corridor to the west). The large wetland and forest block in the southeast corner of the study area (Vachell Swamp) also provides an important connection between large habitat blocks to the north and south. 3.5 Fisheries The majority of the study area is mainly located within Subcatchments 15 and 16 of the Black River Subwatershed (LSRCA 2002). The northwest portion of the study area is located within the subcatchment of Willow Creek, which drains northerly towards Lake Simcoe. All of the watercourses within the study area ultimately drain into Lake Simcoe. The Black River is reported to support both coldwater and warmwater fish species. The headwaters, located in the Oak Ridges Moraine to the south, support Brook Trout habitat. The middle and lower reaches support a fish community more tolerant of warmwater conditions. Mottled Sculpin (coldwater species), pumpkinseed (warmwater species) and Northern Pike (coolwater species) occur in the lower reaches of the Black River, within the study area. Emerald Shiner and Golden Shiner (baitfish species) also occur in the lower reaches. Shoals located along the Lake Simcoe shoreline provide important spawning habitat for Smallmouth Bass, Lake Trout and Lake Herring. Key issues identified within the study area for the Black River include: • Streambank alteration and hardening; • Drains, pipes and stormwater outfalls; • Streambank erosion; • Reduction in riparian cover; LGL Limited environmental research associates Page 7
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Background Report - Town of Georgina

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