Complete samenvatting bedrijfsinformatiesystemen Kenneth 14e druk 2023

Foraging Ecology - -(Ruminants, kangaroo). Consumers eating the resources and the the predators eating the consumers. -Foregut fermenter - -Pre-gastric fermentation. First fermentation of the carbohydrates. Then enzymatic digestion (break down of proteins). Can not eat very fibrous food , digestive constrain. -Hindgut fermenter - -(Horse, zebra, pig, elephant, humans) Post-gastric fermentation. First enzymatic digestion. Then fermentation. -Grass - -- Beter digestibility - More fiber - Less lignin - More cell wall, less content -Browse - -- Lower digestibility - Less finer - More lignin - More cel content, less wall -Theories why animals make decisions: - -1. Optimal foraging theory: Optimising currencies under constrains 2. Classical insect nutritional theory: Self-selection, conversion into a biomass. 3. Geometric framework: Multiple nutrient optimalisation. 4. Ecological stoichmetry: Flow-based energy and nutrient balancing -- Sateration hypotheis - -Nutrients: acquisition Toxins: avoidance -functional response - -Relationship between predator rate of consumption and prey density. Many questions: Decision: What to forage? Activity: Search for prey per unit spotted, search time (s). Decision: Pursue or not? Activity: Pursue, nail down, bite, swallow, digest, handling time (h). Decision: if E/h E/(S+h) then pursue otherwise ignore. -Optimal foraging - -Balancing costs (time, energy) and gains (energy, nutrients). Maximise net energy gain. -Functional response - -Made up of bite rate and bite size -Functional response. - Type 1 - -Filter feeder: h= 0