ESTIMATING POPULATION TREND AND PROCESS VARIATION FOR PVA IN THE PRESENCE OF SAMPLING ERROR
Time series of population abundance estimates often are the only data available for evaluating the prospects for persistence of a species of concern. With such data, it is possible to perform a population viability analysis (PVA) with diffusion approximation methods using estimates of the mean popul...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Figshare
2016
|
Subjects: | |
Online Access: | https://dx.doi.org/10.6084/m9.figshare.c.3298070.v1 https://figshare.com/collections/ESTIMATING_POPULATION_TREND_AND_PROCESS_VARIATION_FOR_PVA_IN_THE_PRESENCE_OF_SAMPLING_ERROR/3298070/1 |
id |
ftdatacite:10.6084/m9.figshare.c.3298070.v1 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.6084/m9.figshare.c.3298070.v1 2023-05-15T18:42:07+02:00 ESTIMATING POPULATION TREND AND PROCESS VARIATION FOR PVA IN THE PRESENCE OF SAMPLING ERROR Staples, David F. Taper, Mark L. Dennis, Brian 2016 https://dx.doi.org/10.6084/m9.figshare.c.3298070.v1 https://figshare.com/collections/ESTIMATING_POPULATION_TREND_AND_PROCESS_VARIATION_FOR_PVA_IN_THE_PRESENCE_OF_SAMPLING_ERROR/3298070/1 unknown Figshare https://dx.doi.org/10.1890/03-3101 https://dx.doi.org/10.6084/m9.figshare.c.3298070 CC-BY http://creativecommons.org/licenses/by/3.0/us CC-BY Environmental Science Ecology FOS Biological sciences Collection article 2016 ftdatacite https://doi.org/10.6084/m9.figshare.c.3298070.v1 https://doi.org/10.1890/03-3101 https://doi.org/10.6084/m9.figshare.c.3298070 2021-11-05T12:55:41Z Time series of population abundance estimates often are the only data available for evaluating the prospects for persistence of a species of concern. With such data, it is possible to perform a population viability analysis (PVA) with diffusion approximation methods using estimates of the mean population trend and the variance of the trend, the so-called process variation. Sampling error in the data, however, may bias estimators of process variation derived by simple methods. We develop a restricted maximum likelihood (REML)-based method for estimating trend, process variation, and sampling error from a single time series based on a discrete-time model of density-independent growth coupled with a model of the sampling process. Transformation of the data yields a conventional linear mixed model, in which the variance components are functions of the process variation and sampling error. Simulation results show essentially unbiased estimators of trend, process variation, and sampling error over a range of process variation/sampling error combinations. Example data analyses are provided for the Whooping Crane (Grus americana), grizzly bear (Ursus arctos horribilis), California Condor (Gymnogyps californianus), and Puerto Rican Parrot (Amazona vittata). This REML-based method is useful for PVA methods that depend on accurate estimation of process variation from time-series data. Article in Journal/Newspaper Ursus arctos DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Environmental Science Ecology FOS Biological sciences |
spellingShingle |
Environmental Science Ecology FOS Biological sciences Staples, David F. Taper, Mark L. Dennis, Brian ESTIMATING POPULATION TREND AND PROCESS VARIATION FOR PVA IN THE PRESENCE OF SAMPLING ERROR |
topic_facet |
Environmental Science Ecology FOS Biological sciences |
description |
Time series of population abundance estimates often are the only data available for evaluating the prospects for persistence of a species of concern. With such data, it is possible to perform a population viability analysis (PVA) with diffusion approximation methods using estimates of the mean population trend and the variance of the trend, the so-called process variation. Sampling error in the data, however, may bias estimators of process variation derived by simple methods. We develop a restricted maximum likelihood (REML)-based method for estimating trend, process variation, and sampling error from a single time series based on a discrete-time model of density-independent growth coupled with a model of the sampling process. Transformation of the data yields a conventional linear mixed model, in which the variance components are functions of the process variation and sampling error. Simulation results show essentially unbiased estimators of trend, process variation, and sampling error over a range of process variation/sampling error combinations. Example data analyses are provided for the Whooping Crane (Grus americana), grizzly bear (Ursus arctos horribilis), California Condor (Gymnogyps californianus), and Puerto Rican Parrot (Amazona vittata). This REML-based method is useful for PVA methods that depend on accurate estimation of process variation from time-series data. |
format |
Article in Journal/Newspaper |
author |
Staples, David F. Taper, Mark L. Dennis, Brian |
author_facet |
Staples, David F. Taper, Mark L. Dennis, Brian |
author_sort |
Staples, David F. |
title |
ESTIMATING POPULATION TREND AND PROCESS VARIATION FOR PVA IN THE PRESENCE OF SAMPLING ERROR |
title_short |
ESTIMATING POPULATION TREND AND PROCESS VARIATION FOR PVA IN THE PRESENCE OF SAMPLING ERROR |
title_full |
ESTIMATING POPULATION TREND AND PROCESS VARIATION FOR PVA IN THE PRESENCE OF SAMPLING ERROR |
title_fullStr |
ESTIMATING POPULATION TREND AND PROCESS VARIATION FOR PVA IN THE PRESENCE OF SAMPLING ERROR |
title_full_unstemmed |
ESTIMATING POPULATION TREND AND PROCESS VARIATION FOR PVA IN THE PRESENCE OF SAMPLING ERROR |
title_sort |
estimating population trend and process variation for pva in the presence of sampling error |
publisher |
Figshare |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.3298070.v1 https://figshare.com/collections/ESTIMATING_POPULATION_TREND_AND_PROCESS_VARIATION_FOR_PVA_IN_THE_PRESENCE_OF_SAMPLING_ERROR/3298070/1 |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_relation |
https://dx.doi.org/10.1890/03-3101 https://dx.doi.org/10.6084/m9.figshare.c.3298070 |
op_rights |
CC-BY http://creativecommons.org/licenses/by/3.0/us |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.3298070.v1 https://doi.org/10.1890/03-3101 https://doi.org/10.6084/m9.figshare.c.3298070 |
_version_ |
1766231735887986688 |