Indirect effects affects ecosystem dynamics
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The document discusses the impact of non-consumable effects (NCE) and trait-mediated indirect effects (TMI) on planktonic community dynamics, particularly in relation to predator-prey interactions and biomass fluxes. It posits that inducible defenses modify community dynamics, crucial for understanding long-term ecological processes in ecosystems. The research highlights existing gaps in models that incorporate NCEs and suggests the need for experimental designs to evaluate these dynamics more robustly.
Indirect effects affects ecosystem dynamics
- 1. Indirect effects affects ecosystem dynamics The effect of nonlethal effects in planktonic community Alessandra Lütz; Garcia Guillerme, Maikol Rodriguez, Thiago Couto, Caio Graciani, Angel Segura
- 2. Biodiversity
- 3. You are here David M. Hillis, Derrick Zwickl, and Robin Gutell, University of Texas.
- 4. Energy flow Ecosystem functioning Energy fluxes Trophic models
- 5. Energy flow Being eaten (predation) Change in prey abundance and traits Modify community dynamics
- 10. NCE are relevant for predator prey dynamics Small experimental systems Relevant (Significative change) Planktonic
- 18. Planktonic systems Lots of information on basic physiology Morphology based functional groups Nutrient (P limited) Group I Group VII
- 19. Planktonic systems Lots of information on basic physiology Morphology based functional groups Nutrient (P limited) Group I Group VII Kruk et al., 2010
- 20. How to ensamble the “system”? Predator “Daphnia” Limiting resource Phosporus Competing species
- 21. How to ensamble the “system”? Predator “Daphnia” Limiting resource Phosporus Competing species Explicit competition Group I Group VII P
- 22. How to ensamble the “system”? Predator “Daphnia” Limiting resource Phosporus Competing species Explicit competition Group I Group VII P
- 23. What if NCE? Change for I to VII in the prescence of Daphnia Group I Group VII P
- 24. Lets put some maths! Change for I to VII in the prescence of Daphnia (m) Group I Group m VII P
- 25. How does system behaves? Change for I to VII in the prescence of Daphnia (m) Group I Group m VII P
- 26. Changes in the fixed points M=0 (Exclusion) m=0.4 (Coexistence) Grou Grou C or G>0 C,G,Z,P > 0 pI m p VII P
- 27. Sustained oscilations Implications for biodiversity Grou pI m Grou p VII m=0 (Exclusion G) m=0.4 (Coexistence) P
- 28. What about nature? Coexistencepeaks Grou pI m Grou p VII Grou p VII P Grou pI
- 29. Grou m Grou NCEs are important pI p VII Non trivial effect (Peacor et al 2012) P Influence dominance and coexistence Explored in a mechanistic models based on physiological principles (first time)
- 30. NCEs are important Grou pI m Grou p VII No data to compare with model output P Design of experiments for model evaluation and biological parameters Mathemathical tools (topological aspects)
- 31. Group I m Group VII P
- 33. m>0 Grou m Grou p VII pI P
- 34. m=0 Grou m Grou p VII pI P
- 35. Grou pI m Grou p VII Similar behaviour P Similar patterns in simple and complex model Similar model beahviour (needs more formal analysis) Other competing groups? More predators?