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Stochastic patch occupancy models (SPOMs) One major drawback of the Levins model is that it is deterministic , whereas the fundamental metapopulation processes are stochastic . Metapopulations are particularly useful when discussing species in disturbed habitats , and the viability of their populations , i.e., how likely they are to become ...
Abstract: Patch occupancy surveys are commonly used to parameterize metapopulation models. If isolation predicts patch occupancy, this is generally attributed to a balance between distance‐dependent recolonization and spatially independent extinctions. We investigated whether similar patterns could also be generated by a process of spatially correlated extinctions following a unique ...
- Michael Clinchy, Daniel T. Haydon, Andrew T. Smith
- 2002
May 9, 2018 · The Future: The future of occupancy modeling includes both methodological development and conservation application. New methodological developments include multistate models, models that incorporate both habitat and species dynamics, models that include effects of neighbor locations, and models that include not only nondetection, but also ...
Stochastic patch occupancy models are not to be confused with the similarly named ‘occupancy models’, used since the early 2000s to statistically infer the past occupancy of under-sampled areas (e.g., MacKenzie et al., 2003); note that the SPOMs we consider here are all informed by field observations of patch occupancy that are assumed to ...
Oct 10, 2023 · Threshold patch occupancy. Functional patch size was the sole/plausible sole (n = 11) or primary (n = 2) predictor in binary logistic regression models of threshold occupancy for 13 (72%) of the 18 guilds for which regressions were calculable (Table (Table4, 4, Fig. 7), including 10 of 12 multispecies guilds. Total patch amount was the sole ...
Nov 1, 2014 · We applied our model to data from a naturally fragmented population of water voles Arvicola amphibius to describe observed patch occupancy dynamics and to investigate long-term persistence under scenarios of elevated stage-specific local extinction. Accounting for biases induced by imperfect detection, we were able to estimate: stable, and ...
Jan 13, 2021 · 2.1. D-SPOM: coupling spatio-temporal dynamics wetland hydrology and metapopulation patch occupancy. We developed a dynamic version of the stochastic patch occupancy model, SPOM [6,39,40], to simulate the presence/absence of a given species in a time-varying wetlandscape. SPOM computes the distribution of occupied patches, in discrete time ...
