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Acute And Chronic Exposure To Lead: Cellular And Behavioral Effects On The Pond Snail Helisoma Trivolvis, Virginia T. Bennett
Acute And Chronic Exposure To Lead: Cellular And Behavioral Effects On The Pond Snail Helisoma Trivolvis, Virginia T. Bennett
Legacy ETDs
The focus of this study is on the effects of lead on Helisoma trivolvis, a pulmonate pond snail. Many species of molluscs are being used as bioindicators of environmental toxins. To provide a background for the reader, a brief history and description of the Phylum Mollusca (at the class level) is presented in Chapter 1. A second chapter (Ch. 2) is concerned with lead and its effects. A synopsis of past and present studies that show the interaction between lead and molluscs is given in Chapter 3, then two experimental chapters follow. The first experimental chapter (Ch. 4) is …
Nest Box Use, Reproductive Success, And Nestling Growth Of American Kestrels (Falco Sparverius) Nesting Along The Coastal Plain Of Georgia, Walter Roy Shuford
Nest Box Use, Reproductive Success, And Nestling Growth Of American Kestrels (Falco Sparverius) Nesting Along The Coastal Plain Of Georgia, Walter Roy Shuford
Legacy ETDs
In an attempt to increase breeding populations of American Kestrels (Falco sparverius) in Georgia, 402 nest boxes were erected in the Coastal Plain of Georgia beginning in 1994 through the spring of 1996. Nest box occupancy averaged 8% in 1996 and 9.7% in 1997, two fold the average in 1995. Occupancy at Fort Gordon military base averaged 27.5% (28 of 102) in 1996 and 29 4% (30 of 102) in 1997 Nest box use in all other areas averaged 13% (4 of 300) in 1996 and increased to 3% (9 of 300) in 1997. Clutch sizes for nests …
Small Miracles: Propagation Efforts Using Plants In The Family Hamamelidaceae, Martha Sasser Joiner
Small Miracles: Propagation Efforts Using Plants In The Family Hamamelidaceae, Martha Sasser Joiner
Legacy ETDs
Attempts were made to propagate five species in the family Hamamelidaceae by softwood cuttings or seeds. Local populations of witch-hazel Hamamelis virginiana L. and sweetgum Liquidambar styraciflua L. supplied cuttings and seeds of these native American species. Cultivated plants of dwarf witch-alder Fothergilla gardenii Murray were used initially for cuttings. Later, three native populations of this species were located and cuttings were obtained from them. Also, for seed propagation studies, seeds of F. gardenii were obtained from the North Carolina Botanical Garden and seeds were obtained from cultivated plants of two Asian species, winter hazel Corylopsis sinensis Hemsley and Chinese …