Lecture 4-Applications of DEB theory to ecotoxicology and nanotoxicology скачать в хорошем качестве

Lecture 4-Applications of DEB theory to ecotoxicology and nanotoxicology

Dynamic Energy Budget Theory with Applications to Ecology and Ecotoxicology Lectures by Roger Nisbet -- winter 2013 Dynamic energy budget (DEB) theory1 is a powerful theoretical framework for relating suborganismal (biochemical, genetic, physiological) processes to organismal performance and, thereby, to populations and ecosystems. DEB theory is also a powerful tool for ecotoxicology, and has been recently used in models describing the impact of nanomaterials in the environment. Although mastering the details of the theory requires considerable time investment, the principles of mass and energy budgeting are straightforward and are widely appreciated by biologists. DEB models describe the rates at which an organism assimilates energy and elemental matter from food and uses them for maintenance, growth, development, and reproduction. These physiological rates depend on the state of the organism (e.g., age, size, maturity) and its environment (e.g., food density, temperature, contaminants). Changes in physiological rates and fluxes of elemental matter impact population and ecosystem dynamics. The primary objective of these lectures is to introduce DEB principles in a maximally simple context. The theory will be illustrated with examples involving toxicants in whales, the population dynamics of waterfleas, nanotoxicology in bacteria -- and more.