Vertaile menetelmiä

	Leslie-matriisi	Etäisyysotanta
Tieteenala	Ekologia	Ekologia
Menetelmäperhe	Process / pipeline	Process / pipeline
Syntyvuosi	1945	1993
Kehittäjä	Patrick Leslie	Stephen Buckland
Tyyppi	structured population dynamics	population abundance estimation
Alkuperäislähde	Leslie, P. H. (1945). On the use of matrices in certain population mathematics. Biometrika, 33(3), 183-212.	Buckland, S. T., Anderson, D. R., Burnham, K. P., Laake, J. L., Borchers, D. L., & Thomas, L. (1993). Distance Sampling: Estimating Abundance of Biological Populations. Chapman and Hall, London.
Rinnakkaisnimet	Leslie model, age-structured population model, matrix population model, population dynamics	line transect, point transect, distance estimation, detection probability
Liittyvät	4	4
Tiivistelmä	The Leslie matrix is a deterministic model of age-structured population dynamics, introduced by Patrick Leslie (1945). It projects population size and structure forward in time using age-specific fertility and survival rates. A Leslie matrix encodes these vital rates in a square matrix; multiplying the matrix by a population vector yields the population's composition at the next time step. This approach enables calculation of the population's asymptotic growth rate (λ), identification of stable age structure, and sensitivity analysis—understanding which vital rates most strongly influence population growth.	Distance sampling is a statistical method for estimating population abundance from data on distances between observers and detected individuals. Developed by Buckland and colleagues (1993) and formalized in the software Distance, this approach accounts for imperfect detection: animals far from an observer are less likely to be detected. By modeling the detection function (probability of detecting an animal at various distances), distance sampling produces unbiased estimates of abundance and density even when detection is incomplete.