Hierarchical occupancy/abundance models
WebThe book explains all procedures in the context of hierarchical models that represent a unified approach to ecological research, thus taking the reader from design, through data collection, and into analyses using a very powerful way of synthesizing data. Key Features Readership Table of Contents Product details About the Authors Web15 de mai. de 2024 · Occupancy modelling is a common approach to assess species distribution patterns, while explicitly accounting for false absences in …
Hierarchical occupancy/abundance models
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Web2 de dez. de 2024 · Occupancy and N-mixture abundance models, which correct for imperfect detection, are commonly used for this purpose. Fitting these models in a … Web7 de abr. de 2016 · A sampling design and model for estimating abundance of Nile crocodiles while accounting for heterogeneity of detectability of multiple observers. Journal of Wildlife Management 76: 966--975. Pacifici, K., R.M. Dorazio, and M.J. Conroy. 2012. A two-phase sampling design for increasing detections of rare species in occupancy surveys.
WebA guide to data collection, modeling and inference strategies for biological survey data using Bayesian and classical statistical methods. This book describes a general and … Web19 de jul. de 2024 · Thus, researchers are interested in monitoring changes in wolverine abundance over time. Occupancy models have been suggested as one approach for …
Web10 de jan. de 2013 · We show that occupancy models are more difficult to fit than is generally appreciated because the estimating equations often have multiple solutions, …
WebThis model treats both occupancy probability ψ and detection probability p as species-level random effects. The benefit of the hierarchical structure is that, by using data …
Web19 de mar. de 2024 · The multi-species, multi-scale occupancy model. We used a Bayesian modeling framework to develop a multi-species, hierarchical occupancy model with three stochastic levels: occupancy (ψ), probability of capture (ϴ), and probability of detection (p) ().The occupancy process describes whether sampling sites are occupied … crystal kidnappedWeb8 de dez. de 2024 · We estimated citywide cat distribution by fitting hierarchical occupancy models and further estimated cat abundance using a novel random thinning spatial capture-recapture model that allows for the use of photos that can and cannot be identified ... Cat occupancy and abundance declined with increasing distance from … crystal killingsworthWebtechniques and how unmarked can be used to model the resulting data. 2.1. Site occupancy models Single season site occupancy model An important state variable in … dwight powell game logsWebWe use a multi-grain (MG) occupancy model, aided by fine-grain remotely sensed imagery, to simultaneously estimate species-environment associations at both grains, conduct … crystal kies facebookWeb30 de jul. de 2014 · Hierarchical occupancy models separate occupancy and detection, and imprecise estimates simply indicate that more data are required for robust inference about the system in question. As for any statistical method, when underlying assumptions of simple hierarchical models are violated, their reliability is reduced. dwight powell home facebookWeb15 de mar. de 2024 · Much of animal ecology is devoted to studies of abundance and occurrence of species, based on surveys of spatially referenced sample units. These surveys frequently yield sparse counts that are contaminated by imperfect detection, making direct inference about abundance or occurrence based on observational data infeasible. … crystal kiehl sheboyganWeb7 de dez. de 2024 · In many statistical community models, researchers focus on understanding interspecific effects on occupancy, abundance, and demography. In this paper, we demonstrate the importance and utility of sharing information among species to inform the observation process, thereby strengthening our inferences about the … crystalkil loughton