Publications by authors named "D Bauman"
Anthropogenic landscape modification may lead to the proliferation of a few species and the loss of many. Here we investigate mechanisms and functional consequences of this winner-loser replacement in six human-modified Amazonian and Atlantic Forest regions in Brazil using a causal inference framework. Combining floristic and functional trait data for 1,207 tree species across 271 forest plots, we find that forest loss consistently caused an increased dominance of low-density woods and small seeds dispersed by endozoochory (winner traits) and the loss of distinctive traits, such as extremely dense woods and large seeds dispersed by synzoochory (loser traits).
View Article and Find Full Text PDFThe objective of this study was to evaluate the possible role of the peroxisome proliferator-activated receptors (PPARs: PPAR-α, PPAR-β/δ, and PPAR-γ) in diet and conjugated linoleic acid (CLA)-induced milk fat depression (MFD) in dairy cows. We hypothesized that the expression of PPARs, which regulate lipid metabolism and bind to polyunsaturated fatty acids, could be modulated by biohydrogenation intermediates that induce MFD, thereby interfering with milk fat synthesis. First, tissue profiling revealed that PPAR-α and PPAR-β/δ had low expression in mammary tissue compared with the liver.
View Article and Find Full Text PDFBackground: Histological evaluation of ovarian tissue harvested as part of the attempt to preserve fertility might clarify the mechanism by which ovarian failure is caused. The purpose of this study was to compare the histologic appearance of ovarian tissue harvested for ovarian tissue cryopreservation (OTC) in chemotherapy naïve and chemotherapy exposed patients regarding the presence of follicles in different stages of development and to explore ovarian tissue histology in patients exposed to low- and high-cytotoxicity risk chemotherapy.
Methods: A cohort of post-pubertal cancer survivors who underwent OTC between 1997 and 2018 was evaluated.
Article Synopsis
- When plants die, it helps nearby plants by reducing competition for resources like sunlight and nutrients.
- In a study of 37,212 trees, scientists found that dead trees (legacy effects) had a much stronger impact on the growth and survival of neighboring trees than the living ones.
- Most tree species were negatively affected by the presence of dead trees, which shows that the past presence of these trees can change how plant communities work.
Article Synopsis
- Over the past 40 years, the intensity of tropical cyclones affecting coastal regions has increased, leading to concerns about their impact on forests and tree damage.
- Researchers analyzed data from 11 cyclones and 74 forest plots to understand how factors like maximum sustained wind speed, topographical exposure, tree size, and wood density influence tree damage during these storms.
- Their findings reveal that higher wind speeds and topographical exposure significantly increase tree damage, while denser wood and tree size play complex roles in mitigating damage, especially for smaller trees in extreme wind conditions.