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	Livstabellsresponsexperiment	Metabolisk ekologi (MTE)
Ämnesområde	Ekologi	Ekologi
Familj	Process / pipeline	Process / pipeline
Ursprungsår	2000	2004
Upphovsperson	Hal Caswell	James Brown
Typ	temporal perturbation analysis	metabolic scaling theory
Ursprungskälla	Caswell, H. (2019). Sensitivity Analysis: Matrix Methods in Demography and Ecology. Springer.	Brown, J. H., Gillooly, J. F., Allen, A. P., Savage, V. M., & West, G. B. (2004). Toward a metabolic basis of ecology. Ecology, 85(7), 1771-1789.
Alias	LTRE, demographic analysis, vital rate contribution, elasticity analysis	MTE, metabolic scaling, temperature-size rule, energy allocation
Närliggande	4	4
Sammanfattning	Life Table Response Experiments (LTRE) decompose observed temporal changes in population growth rate (lambda) into contributions from changes in specific vital rates (survival, reproduction). Developed by Caswell (2000) and applied extensively by Wisdom and colleagues, LTRE reveals which demographic changes drove observed population dynamics. For example, LTRE can show whether a population's decline was primarily due to reduced survival of juveniles, reduced fecundity of adults, or changes in other life stages. This guides targeted conservation or management.	The Metabolic Theory of Ecology (MTE), developed by Brown and colleagues (2004), provides a unifying framework linking individual metabolic rate to ecological patterns across levels of organization (organisms, populations, ecosystems). MTE predicts how metabolic rate scales with body size (allometry) and temperature, and uses these scaling relationships to explain patterns in life history, population growth, community structure, and ecosystem dynamics. The theory is grounded in physics: metabolic rate is constrained by supply of resources (energy and nutrients) and demand determined by biochemical kinetics.