| Years B.P. (Before Present) | Glacial Period | Biological Environment/Vegetation |
|---|---|---|
| 20,000-17,000 | Nisouri Slade (southern limit of ice advance) | ` |
| 16,500-15,500 15,00-14,500 |
Erie Interstade Port Bruce Stade (ice Readvance, most S. Ont. glacial features formed) |
dwarf shrub and herbaceous taxa(Arctic)with small growves of spruce |
| 14,000-13,000 | MacKinaw Interstade | sparse vegetation; rapid environmental chane and biotic colonization (open dwarf shrub meadows; wetland boreal and temperate plants; pond aquatic communities) |
| 13,000-12,000 | Port Huron Stade (Lake Whittlesey;surface glacial features formed; Norfolk sand plain) | closed black and white spruce forest(regional) with beach and dune communities(mastodons browsed on forest vegetation around wetland abandoned lake plains) |
| 12,000-10,500 | Lake Iroquois and Lake Algonquin | Mastodon and definite evidence of humans |
| 10,500-10,000 10,000 |
Drainage of Lake Algonquin Nipissing Phase (isostatic effects) |
significant effect on flora and fauna jack/red pine dominant(open pine forest with poplar, birch, oak esp. uplands and sandy lake beds; lowland-eastern white cedar, tamarack) |
| 9000 | erosion/weathering | white pinewith elm and ash |
| 9000-7500 | ` | mixed deciduous-coniferous: oak, elm, maple, ash, ironwood |
| 8000-7500 | ` | decidous:hemlock appears |
| 7500 | ` | hickory, basswood, walnut appear |
| 6500 | ` | beech appears |
| 5000 | ` | drop in hemlock quantities |
| 600 200 |
` | disturbance:herbs, grasses, corn (First Nations agricultural use);ragweed, European weeds(Euro-American settlers) |
The most wide-ranging change in vegetation occurred between the time of early Euro-American settlement, beginning about 1792, and the late 1800's. During this time the forest cover was removed through lumbering, clearing for agricultural fields, and burning for charcoal for the Normandale iron-making furnace. By 1900, only about 11 per cent of the forest cover was estimated to be left (Table 2). Forest cover has remained more or less stable since then, with some overall gain mainly attributed to reforestation and natural succession on abandoned farmland.
Much of the remaining forest cover is in ravines or areas of rugged topography, wet areas such as swamps, and other areas not easy to access for logging nor suitable for cultivated fields. Some forested areas remain at the backs of farms, consisting mainly of woodlots for purposes such as providing fuelwood, and on lands being conserved through public and private stewardship. Although the resource uses occurring in the wooded areas are not well known, many of these remaining wooded areas apparently have been recently grazed, retarding growth of the ground layer and forest succession. in 1989 the forest cover represented about 18 per cent of the land area (RMHN, 1989) (Table 2).
| Year | Per Cent |
|---|---|
| 1851 | 72.1 |
| 1861 | 56.9 | 1891 | 23.6 |
| 1901 | 11.0 |
| 1911 | 12.5 |
| 1921 | 13.2 |
| 1931 | 13.3 |
| 1941 | 12.1 |
| 1951 | 11.5 |
| 1963 | 17.2 |
| 1989 | 18.0 |
Fifty-six natural areas and sites are considered to be significant for conservation and sustainable use purposes (Figure 3).
All of the areas are part of an interacting system which we do not completely understand. We should therefore be cautious about losing any portion of it. The system itself is a relatively small part of the total land in the study area and for that reason should be protected, enhanced and wisely used in its entirety.
Figure 5 is a schematic representation of a possible regional system of natural areas. A major part of this system centres on the Big Creek Valley with Venison Creek, Dedrick's Creek and Deer Creek as key corridors (See Chapter 2, Figure 8). Much forest cover remains in this network of natural areas and river valleys. In studying the foregoing and other possible networks in the Long Point region it is possible to envision reforestation or other restoration of some areas in order to expand and to strengthen the system as a whole.
Opportunities for restoration focus mainly on the corridor or linkage system. Substantial benefit could be provided by restoring some surrounding areas as buffers and enhancing existing areas by removing exotic species and reintroducing native species. Potential areas for restoring connections are identified on Figure 5.
This initial identification of areas is again strategic in nature, with the intent that detailed ecological assessments and further discussion will occur before action.
Other areas of interest include connections along Venison Creek and Deer Creek at Big Creek and between Big Creek and Little Otter Creek, through Courtland Swamp headwaters (SNA-4) and along Cranberry Creek. Other opportunities include Turkey Point and Spooky Hollow (SNA-20 and 22) connecting inland to St. Williams Forest, Walsh Carolinian Forest, Pine Grove Forest and Trout Creek Valley (SNA-12, 18, 21, 24), thereby linking the Lake Erie coast with Dedrick's Creek and Big Creek. These areas are in close proximity to each other. Direct connections could be made with relatively small scale restoration. The connection from Big Creek to Little Otter Creek Valley through Courtland Swamp headwaters is significant because it links the Big Creek system to Big Otter Creek. (See Surface Drainage map, Figure 8 Chapter 2 on The Evolution of the Long Point Area) Opportunities for a connected natural areas system in the Big Otter Creek watershed warrant high priority and careful study.
Beazley, K.F. 1993. Forested Areas of Long Point: Landscape History and Strategic Planning M.A. Thesis in Geography. Heritage Resources Centre. University of Waterloo, Waterloo, Ontario.
Beazley, K. and Nelson, J.G. 1993. Forested Areas of Long Point Region: Landscape History and Strategic Planning Long Point Environmental Folio Publication Series. (Nelson, J.G. and Lawrence, P.L. eds). Technical Paper 3. Heritage Resources Centre, University of Waterloo, Waterloo, Ontario.
Chanasyk, V. 1970. The Haldimand-Norfolk Environmental Appraisal. Vol. 1 Inventory and Analysis Ontario Ministry of Treasury, Economics and Intergovernmental Affairs. Toronto, Ontario.
Chanasyk, V. 1970. The Haldimand-Norfolk Environmental Appraisal. Vol. 2 Synthesis and Recommendations Haldimand-Norfolk Study. Ontario Ministry of Treasury, Economics and Intergovernmental Affairs. Ontario.
Department of Lands and Forests. 1963. Big Creek Valley Conservation Report Conservation Authorities Branch. Toronto, Ontario.
Eagles, P.F.J. and Beechy, T.J. 1985. Critical Unprotected Natural Areas in the Carolinian Life Zone of Canada Final Report. The Identification Subcommittee of Carolinian Canada. The Nature Conservancy of Canada; The Ontario Heritage Foundation; and, World Wildlife Fund Canada. Toronto, Ontario.
Gartshore, M.E., Sutherland, D.A., and McCracken, J.D. 1987. The Natural Areas Inventory of the Regional Municipality of Haldimand-Norfolk. Vol. 1. Natural Areas Norfolk Field Naturalists. Simcoe, Ontario.
Heffernan, S. E. 1978. Long Point Ontario: Land Use, Landscape Change and Planning M.A. Thesis, School of Urban and Regional Planning, University of Waterloo. Waterloo, Ontario.
Karrow, P.F. and Warner, B.G. 1990. "The Geological and Biological Environment For Human Occupation in Southern Ontario" In The Archaeology of Southern Ontario to A.D. 1650 (Ellis, C.J. and Ferris, N. eds). Occasional Publications of the London Chapter, Ontario Archaeological Society, Publication Number 5. London Chapter O.A.S. London, Ontario.
Regional Municipality of Haldimand-Norfolk. 1989. Economic Base Study 1989 Department of Planning and Development. Townsend, Ontario.
Rowe, J.S. 1972. Forest Regions of Canada Dept. of Fisheries and the Environment. Canadian Forestry Service Publication No. 1300. Ottawa, Ontario.
Szeicz, J.M. and MacDonald, G.M. 1991. "Post Glacial History of Oak Savanna in Southern Ontario" Canadian Journal of Botany 69(7): 1507-1519.
Wilcox, S. 1993. The Historical Economies of the Long Point Area Long Point Environmental Folio Publication Series. (Nelson, J.G. and Lawrence, P.L. eds). Working Paper 1. Heritage Resources Centre, University of Waterloo, Waterloo, Ontario.
List of Scientific Names of Tree Species Reported in Text
They provide for protection of species, tree cover, flood control, wildlife habitat and other social and ecological benefits to varying degrees. It is risky and difficult to identify some of these areas as more important than others for several reasons. Some may offer fewer benefits to humans than others, yet the service or services that they offer may be very important locally or to some people more than others.
A map of priority areas for planning and management is presented in Figure 4. Six of these are considered to be areas of primary priority and seven of secondary priority. These rankings are based on the need for attention because of potential threats or constraints as well as environmental significance. The rankings may not always be acceptable to some readers who might evaluate or weight the background information so as to arrive at a different list than the one presented here. We recognize this possibility but advance the priority areas for strategic reasons.
Figure 7.4 Natural Areas of Primary and Secondary Prioruty for Planning and Management (labels are: SNA- Significant Natural Area(Gartshore et al, 1987) and CC-Carolinian Canada Site (allem et al, 1990) in Beazley and Nelson, 1993)
The main intent is that the priority list will encourage discussion and the making of judgments about the future of the natural areas in the Long Point region. Many of these natural areas are under increasing land use and other stresses. Planning and management actions are needed if some or all of their valuable services to their owners and to society more generally are not to be reduced or lost. In this regard it should also be pointed out that the natural areas provide the basis for a green framework or regional system of connected natural areas. Some natural areas can provide linkage or corridor functions, facilitating the movement of species and supporting community and landscape diversity and sustainability.
Figure 7.5 Initial Strategic Planning Schematic for Regional Natural Areas System Including Core Natural Areas and Corridors Connecting Them, Primarily along River Valleys (from Beazley and Nelson, 1993)
Further analysis should be conducted to confirm the significance of these areas, the extent and magnitude of stresses, and any changes that may have occurred since the initial inventory and field observations. Risk assessment should be conducted to identify potential negative effects of restoring connections among natural areas, such as the opening up of any areas sensitive to predation, the spread of disease, or invasion of exotic species. Research should also be carried out on land and resource use and possible economic opportunities linked to conservation and restoration activities.
Photo 7.1 Big Creek (Photographed by Karen Beazley)
Landowners of potential restoration areas should also be contacted to discuss the character of the natural areas and potential cooperation for restoration projects with them.
Areas of focus for potential restoration occur along Big Creek (Photo 1) and Dedrick's Creek, as well as including other areas providing good potential for connections between natural areas and river valleys. In order to complete the basic framework of the system, important areas for potential restoration in the short term include connections along: Vanessa Swamp (SNA-23) and Big Creek; north and south Big Creek Bend (SNA-2), and along Big Creek; and, south of Backus Woods (SNA-1) to Lake Erie along Dedrick's Creek (Figure 5).
Work Cited
Allen, G. M., P.F. Eagles and Price, S.D. 1990. Conserving Carolinian Canada University of Waterloo Press. Waterloo, Ontario.
Appendix 7
Common Name
Scientific Name
Maple
Acer sp.
Birch
Betula sp.
Hickory
Carya sp.
Beech
Fagus sp.
Ash
Fraxinus sp.
Walnut
Juglans sp.
Tamarack
Larix sp.
Ironwood
Ostrya sp.
Spruce
Picea sp.
White Spruce
P. glauca
Black Spruce
P. Mariana
Pine
Pinus sp.
Jack Pine
P. banksiana
Red Pine
P. resinosa
White Pine
P. stroba
Poplar
Populus sp.
Oak
Quercus sp.
Eastern White Cedar
Thuja occidentallis
Basswood
Tilia sp.
Hemlock
Tsuga sp.
Elm
Ulmus sp.