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Mostra e distancës×Analiza e Topologjisë së Rrjetit Ushqimor×Modelimi i Nesh×Analiza e Viabilitetit të Popullatës×
FushaEkologjiEkologjiEkologjiEkologji
FamiljaProcess / pipelineProcess / pipelineProcess / pipelineProcess / pipeline
Viti i origjinës1993200019991981
KrijuesiStephen BucklandRichard Williams and Neo MartinezSteven Phillips and David StockwellMark Shaffer
Llojipopulation abundance estimationecological network characterizationspecies distribution predictionextinction risk assessment
Burimi themeluesBuckland, 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. link ↗Dunne, J. A., Williams, R. J., & Martinez, N. D. (2002). Network structure and robustness of marine food webs. The American Naturalist, 160(1), 117-129. link ↗Phillips, S. J., Anderson, R. P., & Schapire, R. E. (2006). Maximum entropy modeling of species geographic distributions. Ecological Modelling, 190(3-4), 231-259. DOI ↗Shaffer, M. L. (1981). Minimum population sizes for species conservation. BioScience, 31(2), 131-134. DOI ↗
Emërtime të tjeraline transect, point transect, distance estimation, detection probabilityfood web structure, network topology, trophic network, food chain analysisspecies distribution modeling, habitat suitability modeling, ecological niche model, MaxEntPVA, extinction risk, minimum viable population, MVP
Të lidhura4444
PërmbledhjaDistance 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.Food web topology analysis characterizes the structure of predator-prey interactions within ecological communities using network metrics. Pioneered by Williams and Martinez (2000) and extended by Dunne and colleagues (2002), this approach maps which species eat which and quantifies network properties (connectivity, clustering, robustness). Understanding food web structure reveals how ecosystems are organized, how stable they are to species loss, and what roles different species play in ecosystem function.Niche modeling, also called species distribution modeling (SDM), predicts the geographic range and habitat suitability of species using presence-only or presence-background occurrence data and environmental variables. MaxEnt (Maximum Entropy, Phillips et al. 2006) and GARP (Genetic Algorithm for Rule-set Prediction, Stockwell & Peters 1999) are two prominent algorithms. These methods identify the environmental conditions under which species are likely to occur, enabling prediction of distribution beyond sampled areas and assessment of habitat suitability across landscapes.Population Viability Analysis (PVA), introduced by Shaffer (1981), estimates the probability that a population will persist over a given time period under specified conditions. PVA combines demographic models (Leslie matrices, IPMs) with stochastic simulation to project population trajectories, quantifying extinction risk. This allows conservation planners to assess whether a population will likely persist, evaluate management scenarios, and estimate the minimum viable population (MVP) size for long-term persistence. PVA is a decision-support tool, not a precise predictor.
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ScholarGateKrahasoni metodat: Distance Sampling · Food Web Topology · Niche Modeling · Population Viability Analysis. Marrë më 2026-06-20 nga https://scholargate.app/sq/compare