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River Birch (Betula Nigra L.) Forest Communities In Cass And Mason Counties, Illinois, Charles Anthony Uhlarik
River Birch (Betula Nigra L.) Forest Communities In Cass And Mason Counties, Illinois, Charles Anthony Uhlarik
Masters Theses
During the fall of 1988 and the spring of 1989, four stands of river birch (Betula nigra L.) were surveyed in Cass and Mason Counties, Illinois. All study areas were divided into quadrats 25 m on a side (0.154 acres) and the maximum number of quadrats were placed to completely survey each forest. The relative density, relative dominance, and importance value was calculated for each species (dbh greater than 10 cm) in each forest area. Also, seedlings (less than 2.5 cm dbh) and saplings (2.5-10.0 cm dbh) were recorded in each area. River birch is the dominant overstory …
Understory Changes Following A Prescribed Burn In A Central Illinois Oak-Hickory Forest, Charity Rae Hilchen
Understory Changes Following A Prescribed Burn In A Central Illinois Oak-Hickory Forest, Charity Rae Hilchen
Masters Theses
The understory of Baber Woods, Edgar County, Illinois, was surveyed from April to September, 1988, following a low intensity fall burn in November, 1987. From plots sampled in the spring, summer and fall, differences in the composition of the herbaceous and woody components between the burn and control areas were determined. The herbaceous component of the burn area was found to compose a significantly higher percentage (X2 . 05 , 2 =12.49) of the importance values (IV) over all the sampling periods. Acer saccharum was found in significantly lower frequency (X2 . 05 , 2 =24.8) in the …