Publications by authors named "D M Karl"
Article Synopsis
- The study examines how the ratios of carbon, nitrogen, and phosphorus (C:N:P) in ocean particulate matter differ from the standard Redfield Ratio, impacting global carbon storage as these particles sink into the deep ocean.
- Researchers found distinct latitudinal patterns in C:N:P ratios along a transect in the North Pacific, linking these patterns to the composition of macromolecules like proteins, carbohydrates, and lipids in oceanic particles.
- The findings suggest that changes in phytoplankton community structure and nutrient availability are key factors driving variations in these ratios, indicating that physiological acclimation to nutrient supply is likely responsible for the observed latitudinal trends.
Human development has ushered in an era of converging crises: climate change, ecological destruction, disease, pollution, and socioeconomic inequality. This review synthesizes the breadth of these interwoven emergencies and underscores the urgent need for comprehensive, integrated action. Propelled by imperialism, extractive capitalism, and a surging population, we are speeding past Earth's material limits, destroying critical ecosystems, and triggering irreversible changes in biophysical systems that underpin the Holocene climatic stability which fostered human civilization.
View Article and Find Full Text PDFObjective: Alcohol use disorder (AUD) constitutes a critical public health issue and has sex-specific characteristics. Initial evidence suggests that progesterone and estradiol might reduce or increase alcohol intake, respectively. However, there is a need for a better understanding of how the menstrual cycle in females and the ratio of progesterone to estradiol in females and males influence alcohol use patterns in individuals with AUD.
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