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The Effects Of Drought And Shade On Bottomland Hardwood Regeneration, Charles Joseph Pell
The Effects Of Drought And Shade On Bottomland Hardwood Regeneration, Charles Joseph Pell
LSU Doctoral Dissertations
Floodplain forests support a high diversity of tree species adapted to regenerate under fluctuating water and light availability. Regeneration regulates species composition, and shade and flood tolerance influence the likelihood of regeneration. Regeneration failure of shade-intolerant and flood-tolerant tree species commonly occurs in southcentral and southeastern floodplain forests of the United States, also known as bottomland hardwoods (BLHs). In many BLHs reduced flooding has resulted in a dryer floodplain. These changes in flooding are linked to recent shifts in species composition. The mechanisms controlling regeneration in BLHs and these composition shifts are poorly understood. In a controlled germination experiment, I …
Taxonomic Studies Of Cardiochilinae (Hymenoptera: Braconidae) Focused On Specific Genera From Both The Old World And The New World, Ilgoo Kang
LSU Doctoral Dissertations
Taxonomy is a fundamental scientific study in biology, which defines, classifies, and names biological organisms. Braconidae Latreille, 1829 (Hymenoptera) is a megadiverse insect family in need of continuing taxonomic research. Among 45 braconid subfamilies, Cardiochilinae Ashmead, 1900 has had little attention by braconid taxonomists during the previous twenty years. In this dissertation, seven cardiochiline genera, Bohayella Belokobylskij, 1987, Heteropteron Brullé, 1846, Neocardiochiles Szépligeti, 1908, Orientocardiochiles Kang & Long, 2020, Retusigaster Dangerfield, Austin, & Whitfield, 1999, Schoenlandella Cameron, 1905 and Wesmaelella Spinola, 1851 are taxonomically reviewed and investigated. Orientocardiochiles was described as a new genus, the first new genus in the …