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A Survey Of The Flora And Vegetion Of The Mayville Ledge Beech-Maple Woods State Natural Area, Lawrence A. Leitner
A Survey Of The Flora And Vegetion Of The Mayville Ledge Beech-Maple Woods State Natural Area, Lawrence A. Leitner
Field Station Bulletins
At least 132 vascular plant species were present in two relatively undisturbed woods in the Mayville Ledge Natural Area. The Plateau Woods was dominated by ironwood (Ostrya virginiana), American beech (Fagus grandifolia), and sugar maple (Acer saccharum), with a Continuum Index of 2535. Red oak (Quercus rubra), basswood (Tilia americana), and sugar maple were the most important trees of the Slope Woods, where the Continuum Index reached 2253. Sugar maple dominated the sapling and seedling layers of both stands. American beech was completely absent from the Slope, while red oak was limited to minor status on the Plateau. The Slope …
Purple Loosestrife (Lythrum Salicaria L.) In A Southeastern Sedge Meadow, John L. Larson
Purple Loosestrife (Lythrum Salicaria L.) In A Southeastern Sedge Meadow, John L. Larson
Field Station Bulletins
Floristic and seed bank composition of a sedge meadow containing purple loosestrife was examined in 1987 and 1988. Eleocharis spp., Spiraea tomentosa, Triadenum vircrinicum, and Lycopus spp. were widespread while infrequent or absent in nearby sedge meadows without purple loosestrife, suggesting that these species have similar microsite requirements. Changes noted in some species over time probably resulted from changes in climatic and soil moisture conditions. The seed bank reflected the dominant herbaceous vegetation but lacked a few species having moderate frequencies in the established vegetation. Limited samples, unsuitable germination conditions in the greenhouse, autumn seed germination by some species and …
A Preliminary Survey Of The Fungi Of Sapa Spruce Bog, Alan D. Parker
A Preliminary Survey Of The Fungi Of Sapa Spruce Bog, Alan D. Parker
Field Station Bulletins
An extensive study of the fungi of Sapa Spruce Bog was started during the summer of 1989. The site was divided into three collecting zones the swamp hardwoods surrounding the bog, the tamrac and black spruce zone, and the central, open sphagnum mat zone. Greatest species diversity has been observed in the swamp hardwoods; many fungi identified from this zone have also been recorded from the Field Station beech/maple woods (Parker, 1987 and 1988). Factors contributing to the greater diversity of fungi in this zone include the composition of leaf litter and humus, the larger amount of downed logs in …
A Discussion On Chaos, Anastasios A. Tsonis
A Discussion On Chaos, Anastasios A. Tsonis
Field Station Bulletins
In this paper I review some of the basis principles of the theory of dynamical systems. I introduce the reader to the definition of chaos and strange attractors and discuss their implications.