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Seed And Seedling Ecology Of Acer Saccharum And Acer Platanoides: A Contrast Between Native And Exotic Congeners, Scott J. Meiners
Seed And Seedling Ecology Of Acer Saccharum And Acer Platanoides: A Contrast Between Native And Exotic Congeners, Scott J. Meiners
Scott J. Meiners
The exotic tree, Acer platanoides, is increasing in forests of northeastern North America, largely within the range of its native congener, Acer saccharum. A combination of field and controlled experiments was used on seeds and seedlings of these congeners to determine species characteristics that may be contributing to these floristic changes. Acer platanoides experienced lower rates of seed predation than A. saccharum in field experiments. Differences in the dispersal and allocation characteristics of the two species were small and not likely to explain the relative success of A. platanoides. Greenhouse- grown seedlings of A. platanoides were much larger than those …
The Relationship Between Community Diversity And Exotic Plants: Cause Or Consequence Of Invasion?, Scott J. Meiners, Mary L. Cadenasso
The Relationship Between Community Diversity And Exotic Plants: Cause Or Consequence Of Invasion?, Scott J. Meiners, Mary L. Cadenasso
Scott J. Meiners
Invasion ecology has suffered from the artificial separation of invasibility and impact processes in understanding the ationship between diversity and plant invasion. By studying these independently functioning stages of invasion in concert, we can gain great insight into the biological causes and consequences of invasions, and develop crucial information for the generation of adequate management strategies. Our conceptual framework provides a structure to synthesize the current body of research, suggests research needed to fill the gaps in understanding and to organize results from future research. The framework is a powerful tool to guide ecological understanding of the relationship between invasion …
Vegetation And Flora Of American Beech Woods Nature Preserve, Clark County, Illinois, Bob Edgin, Gordon C. Tucker, John E. Ebinger
Vegetation And Flora Of American Beech Woods Nature Preserve, Clark County, Illinois, Bob Edgin, Gordon C. Tucker, John E. Ebinger
Gordon C. Tucker
No abstract provided.
The Social Environment Affects Mate Guarding Behavior In Japanese Beetles, Popillia Japonica, Yoriko Saeki, Kipp C. Kruse, Paul Switzer
The Social Environment Affects Mate Guarding Behavior In Japanese Beetles, Popillia Japonica, Yoriko Saeki, Kipp C. Kruse, Paul Switzer
Paul V. Switzer
The effect of the social environment on post-copulatory mate guarding duration in Japanese beetles, (Popillia japonica Newman), was examined in a laboratory experiment. The mate guarding durations of beetles in different sex ratios and densities were observed for 10 hours. Guarding duration was longer when females were larger, suggesting the presence of ‘cryptic’ male mate choice. Densities, but not sex ratio, affected the duration of guarding bouts, with males guarding for longer at higher densities. This result implies that males increase their guarding duration under conditions in which their female may be likely to be encountered by other males. The …
Effects Of Family Mealtime Practices On Household Inhabitants, Lindsay A. Schwarz, Melanie Burns
Effects Of Family Mealtime Practices On Household Inhabitants, Lindsay A. Schwarz, Melanie Burns
Melanie Burns
The purpose of this study was to determine how various family mealtime practices influence family dynamics. The objectives were to determine the frequency of meals per week consumed as a family, which meal was typically consumed together, influencing factors on why families do or do not choose to eat together, and the extent to which the participants perceived that family meal time strengthens the family unit. Participants (n=50) in the study completed a self-administered survey that consisted of questions regarding current family mealtime practices, as well as general questions about the family unit. Results indicated that family meals have the …