. The Canadian field-naturalist. 102 The Canadian Field-Naturalist Vol. 114. 5 -^ 14 -it, _ ^Mellon Creek Subsites: 1. Slope to SE. steep slope with drainage. Moist. Plant cover vascular 25% (herbs), non-vascular 60%. 2. Main slope to S. Main sloping surface of outcrop. Dry and highly disturbed. Plant cover vascular 5% (herbs), non-vascular 60%. 3. Wedge of exposed rock 1. Dry rock exposure between grassy subsites Plant cover vascular 5% (herbs), non-vascular 20%. 4. Wedge of exposed rock 2. Exposed rock between grassy subsites. Plant cover vascular 20% (herbs), non-vascular 20%. 5. Top of roc
. The Canadian field-naturalist. 102 The Canadian Field-Naturalist Vol. 114. 5 -^ 14 -it, _ ^Mellon Creek Subsites: 1. Slope to SE. steep slope with drainage. Moist. Plant cover vascular 25% (herbs), non-vascular 60%. 2. Main slope to S. Main sloping surface of outcrop. Dry and highly disturbed. Plant cover vascular 5% (herbs), non-vascular 60%. 3. Wedge of exposed rock 1. Dry rock exposure between grassy subsites Plant cover vascular 5% (herbs), non-vascular 20%. 4. Wedge of exposed rock 2. Exposed rock between grassy subsites. Plant cover vascular 20% (herbs), non-vascular 20%. 5. Top of rock outcrop. Main open plateau at the highest exposure of the rock. Highly disturt>ed. Srhall crevices filled with leaf litter. Plants restricted to crevices. Plant cover vascular 15% (hert3s. shrubs), non-vascular <S%. 6. Steep slope. steep slope to the SW. Open area bounded by trees and shrubs. Plant cover vascular 40%. non-vascular 30%. 7. Grassy crevice. Well vegetated wide crevice, moist, drainage, peat accumulation. Plant cover vascular 80% (graminoid and shmbs), non-vascular <10%. 8. Exposed rock. Open rock surrounded by shrutts. Plant cover vascular 20% (shrubs), non-vascular 25%. 9. Grove of sumac Sloping eastern edge of site. Plant cover vascular 65% (shrubs, herbs, graminoids), non-vascular 20%. 10. Patch of tree/shrub seedlings. Low. moist area, with some soil txjikl-up Plant cover vascular 60% (tree/and shrub seedlings, gramonoids, herbs), rKHVvascular 30%. 11. Grassy slope. A vegetated patch within the open rock outcrop, some soil buikl-up. Plant cover vascular 60% (graminoids, shrubs), non-vascular 25%. 12. Shrubby area. Shallow, wide slope, well vegetated, some soil accumulation. Plant cover vascular 70% (shrubs, herbs), non-vascular 10%. 13. Shrubby top of plateau. Undulating, top of outcrop forming norlhem boundary of the study site. Plam cover vascular 80% (trees, shrubs, graminokis, herbs), norvvascular 10%. 14. Crevice. Narrow rock crevice, filled wi
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