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Articles 1 - 7 of 7
Full-Text Articles in Life Sciences
Aquatic Vascular Plants In Three Bays Of Eastern Door County, Wisconsin, Peter J. Salamun
Aquatic Vascular Plants In Three Bays Of Eastern Door County, Wisconsin, Peter J. Salamun
Field Station Bulletins
Aquatic macrophytes of the western shores of Lake Michigan have received little attention from Wisconsin botanists (Ross and Calhoun, 1951; Curtis, 1959), probably because few localities are available for study. Severe wave action and unstable bottom sediments prevent the establishment of such plants in many areas of the lakeshore and intensive shoreline development has eliminated most of the hardy species which were originally present. However, three bays in eastern Door County (Rowleys Bay, North Bay and Moonlight Bay) support a considerable number of aquatic plant because they are protected from severe storms and are relatively free from human interference. This …
Predator Recognition Through Audition In The Black-Capped Chickadee (Parus Airicapillus), Karen Apel
Predator Recognition Through Audition In The Black-Capped Chickadee (Parus Airicapillus), Karen Apel
Field Station Bulletins
The behavior of bird species toward a potential predator has been investigated in various studies in which a live or model predator has been presented to the subject(s). However, with the exception of a few reports of the responses of birds to imitated calls of different birds of prey (e.g., Miller, 1952), little work has been done on how a bird's behavior is influenced by the vocalizations of predators. The purpose of this study was to record the behavior of free-living Black-capped Chickadees (Parus atricapillus) when tape-recorded calls of predatory birds were played back to them.
Forest Vegetation Of Ozaukee County, Larry R. Brumm
Forest Vegetation Of Ozaukee County, Larry R. Brumm
Field Station Bulletins
No abstract provided.
Noteworthy Events From Spring To Autumn, Maria Plonczynski
Noteworthy Events From Spring To Autumn, Maria Plonczynski
Field Station Bulletins
No abstract provided.
Herbaceous Production In Burned-Cut Burned-Uncut And Control Areas Of A Chamaecyparis Thyoides (L.) Bsp (Cupressaceae) Stand In The Great Dismal Swamp, Caroline Elisabeth Mckinley
Herbaceous Production In Burned-Cut Burned-Uncut And Control Areas Of A Chamaecyparis Thyoides (L.) Bsp (Cupressaceae) Stand In The Great Dismal Swamp, Caroline Elisabeth Mckinley
Biological Sciences Theses & Dissertations
The herbaceous layer of an Atlantic white cedar (Chamaecyparis thyoides) stand in the Great Dismal Swamp was sampled to estimate the productivity of two burned areas and a control area. The herbaceous vegetation was sampled along three transects utilizing the harvest method and productivity values were estimated using peak biomass values for each individual species. The burned-cut area had the highest productivity (3623 kg ha-l yr-1) and was characterized by species of the Asteraceae, Poaceae, and Cyperaceae. The burned-uncut area had a productivity value of 1636 kg ha-1 yr-1 with similar species of the Asteraceae …
Optical Management Of The Spruce-Fir Forest Against The Spruce Budworm, Gari B. Simon
Optical Management Of The Spruce-Fir Forest Against The Spruce Budworm, Gari B. Simon
Senior Scholar Papers
Proper management of the softwood forest-budworm ecosystem is vital to the future prosperity of Maine. In choosing a management strategy, economic as well as ecological effects must be considered. This paper constructs a computer simulation model of the budworm-forest ecosystem in order to better evaluate effects of different types of forest management. The budworm-softwood forest ecosystem is a highly complicated system involving three dynamic population systems: the host tree population, the budworm population and the foliage population. Each system is modeled, by regression analysis, to observations collected by entomologists over the past half century. There are large gaps of knowledge …
Key To The Wood-Decaying Polyporaceae Of The East Texas Region, Steve Bishop, W. T. Mcgrath
Key To The Wood-Decaying Polyporaceae Of The East Texas Region, Steve Bishop, W. T. Mcgrath
eBooks
The family includes those pore fungi whose fruiting bodies are tough, leathery or woody and whose pore layer usually cannot be separated easily from the context. The pores on the undersurface are only exterior openings of tubes bearing spores and in each species these tube mouths, or pores, are a definite shape and size. Occasionally pore walls will break up giving the appearance of teeth or gills. Fruiting bodies can be sessile, stemmed, effused-reflexed or resupinate (Fig . 2). Members of the family can be either perennial or annual, with the annual species growing during the summer and maturing that …