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Ontario's Natural Heritage Areas - Ministry of Natural Resources

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Image by D. Paleczny<br />

(d) The Series should include sites which are important<br />

because they have been the scene <strong>of</strong> detailed and<br />

well-documented research.<br />

(e) The Series should include sites which contain for<br />

example, deposits <strong>of</strong> peat, lignite or sediment from<br />

which information may be obtained about past<br />

vegetation and climatic changes, and also sites <strong>of</strong><br />

special palaeontological importance.<br />

(f) The Series should include sites which are <strong>of</strong> special<br />

physiographic or geomorphological interest and<br />

which represent unusual habitats” (Nicholson,<br />

1968:17).<br />

Ontario’s <strong>Natural</strong> <strong>Heritage</strong> <strong>Areas</strong> 84<br />

Working within this context, the Ontario IBP/CT<br />

Committee adopted Hills’ system <strong>of</strong> Site Regions<br />

(now called Ecoregions) and Site Districts (now<br />

called Ecodistricts) (Hills, 1959a, 1959b, 1968) as the<br />

ecological framework for selecting and assessing<br />

International Biological Programme Sites (Figs. 4-1 and<br />

4-2). In addition to utilizing the survey protocols and<br />

the standard IBP check-sheet for documenting areas,<br />

a supplementary form was developed to describe<br />

the physiographic characteristics and site conditions<br />

within surveyed areas (Box 4-4). The Ontario survey<br />

also added the requirement for the mapping <strong>of</strong> plant<br />

communities on an aerial photo base map and a<br />

descriptive essay that summarized the physiographic<br />

nature, plant communities, and any special biotic<br />

features <strong>of</strong> each site. Candidate areas were selected<br />

through knowledgeable contacts, published sources,<br />

and the interpretation <strong>of</strong> maps and aerial photographs.<br />

Final site selections and documentation were then<br />

based on field surveys conducted by field biologists<br />

engaged to complete this work. Over the course <strong>of</strong><br />

the survey, parks personnel took charge <strong>of</strong> conducting<br />

IBP surveys in Provincial Parks and on the Bruce<br />

Peninsula, while IBP personnel concentrated their<br />

efforts on sites outside <strong>of</strong> parks. Although initial<br />

survey work was concentrated in southern Ontario,<br />

efforts were made to include sites across northern<br />

Ontario within constraints imposed by funding,<br />

available expertise, and accessibility. Altogether, more<br />

than 600 areas were surveyed and documented in<br />

Ontario, 547 <strong>of</strong> which were reported in the 3rd and<br />

final edition <strong>of</strong> the Canadian National Directory <strong>of</strong> IBP<br />

<strong>Areas</strong> (La Roi et al., 1979) marking the highest output<br />

for the 10 IBP/CT panels across Canada.<br />

Image by P. Kor

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