Pamphlets on Forestry, Volume 41991 |
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Page 360
... depressions in which this flora has developed and flourished . Indeed , in the morainic belt of the Huron basin it would seem that among the agencies which have produced important topographic changes since glacial times , the bog plants ...
... depressions in which this flora has developed and flourished . Indeed , in the morainic belt of the Huron basin it would seem that among the agencies which have produced important topographic changes since glacial times , the bog plants ...
Page 365
... depressions among the recessional moraines . As we go northward , the relative proportion of peat bogs and peat deposits regularly increases , and there is a notable tendency toward the accumulation of pure humus in situations other ...
... depressions among the recessional moraines . As we go northward , the relative proportion of peat bogs and peat deposits regularly increases , and there is a notable tendency toward the accumulation of pure humus in situations other ...
Page 419
... depression while a ther- mometer placed 30 feet ( 9m ) above the hilltop averaged 8.8 ° F. ( 5 ° C. ) above that of the " swale . " On comparing the temperatures of atmospherically undrained and drained depressions with that of the ...
... depression while a ther- mometer placed 30 feet ( 9m ) above the hilltop averaged 8.8 ° F. ( 5 ° C. ) above that of the " swale . " On comparing the temperatures of atmospherically undrained and drained depressions with that of the ...
Contents
The Huron River valley 351 | 351 |
their development and ecological conditions | 360 |
The bog plant societies | 429 |
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2d whorl 4th whorl abundant acidity aggregate ray Alnus aments annual ring apex Aronia basin bast fibers Betula bog areas bog plants bog societies bog water branches cambial activity cambium cassandra conifers creosote crystals cutting depressions diameter increase Dicotyledons drainage drained factors Fagales fiber bundles foliar ray forest formation glacial growth habitats HARTIG heartwood hickory Huron June lake larch Larix layers leaves lower Michigan moraine occur parenchyma parenchyma cells peat perianth periderm phloem pine Pinus piñon Pinus rigida pith rays plant societies Platanus plates present Quercus radial region resin canals roots rows Salix sapwood scattered sclerenchyma sclerotic sedge shrubs sieve tubes soil species specimens sphagnum stem stone cells substratum surface swamp tamarack temperature thick tissue tracheids trees trunk tyloses undrained uniseriate rays vegetation vessels Viola blanda walls white oak wood xerophilous xylem zone μ μ μ