Dynamic Energy Budget Theory for Metabolic Organisation
"Dynamic Energy Budget (DEB) theory is a formal theory for the uptake and use of substrates (food, nutrients and light) by organisms and their use for maintenance, growth, maturation and propagation. It applies to all organisms (microorganisms, animals and plants).The primary focus is at individual level, from a life cycle perspective, with many implications for sub- and supraindividual levels. The theory is based on sound chemical and physical principles, and is axiomatic in set-up to facilitate testing against data. It includes effects of temperature and chemical compounds; ageing is discussed as an effect of reactive oxygen species, with tight links to energetics. The theory also includes rules for the co-variation of parameter values, better known as body size scaling and quantitative structure- activity relationships. Many well-known empirical models turn out to be special cases of DEB theory and provide empirical support." "Many additional applications are illustrated using a wide variety of data and species." "After 30 years of research on DEB theory, this third edition presents a fresh update. Since the second edition in 2000, some 140 papers have appeared in journals with a strong focus on DEB theory." "A lot of supporting material for this book meanwhile has been developed and is freely available, such as the software package DEBtool; one of its toolboxes contains code that generates the figures of this book: setting of data, model specification, parameter estimation and plotting. By replacing data of your own, you have a convenient tool for applying the theory." "This edition includes a new chapter on evolutionary aspects; discusses methods to quantify entropy for living individuals; isotope dynamics; a mechanism behind reserve dynamics; and toxicity of complex mixtures of compounds. An updated ageing module is now also applied to demand systems; there are new methods for parameter estimation; adaptation of substrate uptake; the use of otoliths for reconstruction of food level trajectories; the differentiated growth of body parts (such as tumours and organs) linked to their function; and many more topics are new to this edition." --Book Jacket.
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BASIC CONCEPTS Individuals as dynamic systems homeostasis is key to life effects
Standard DEB model in time length and energy
STANDARD DEB MODEL IN TIME LENGTH AND ENERGY Assimilation reserve
Energy compounds and metabolism
ENERGY COMPOUNDS AND METABOLISM Body size and composition classes
Univariate DEB models
Multivariate DEB models
MULTIVARIATE DEB MODELS Extensions to more than one substrate reserve
Extensions of DEB models
Covariation of parameter values
Notation and symbols
ageing allocation ammonia amount animals assimilation bacteria bacterium behaviour Bertalanffy growth Biol biomass birth body size scaling C-mole carbohydrates carbon dioxide cell chemical chemical potential chemostat coefﬁcient composition compounds concentration constant cycle daphnids DEB theory deﬁned depends dioxygen dissipation dry weight dynamics ectotherms effects eggs embryo endosymbionts environment enzyme eukaryotes excretion feeding Figure ﬁrst ﬁsh ﬁt ﬁuxes ﬁxed ﬂux food density fraction growth rate heat homeostasis increase individual ingestion rate isomorphs isotope juvenile kinetics Kooijman lipids maintenance costs mammals maturity maintenance maximum membrane metabolic mitochondria mobilisation molecules nitrogen nitrogenous waste nutrients organisms parameter values photosynthesis plants population prokaryotes proportional protein quantiﬁed ratio relationship reproduction reserve and structure reserve density respiration scaled functional response scaled reserve shape correction function somatic maintenance species speciﬁc standard DEB model structural biomass structural mass substrate substrate density surface area synthesis throughput rate transformation uptake V1-morphs