Data from: Estimating transient populations of unmarked individuals at a migratory stopover site using generalized N-mixture models
1. Migration counts are popular indices used to monitor population trends over time. Advanced analytical methods for estimating abundance of unmarked, open populations now incorporate population growth models and simultaneously test for covariate effects on abundance and detection probability. Howev...
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fttriple:oai:gotriple.eu:50|dedup_wf_001::877bf6c5fd8349de3fb1f23648dde910 2023-05-15T15:23:17+02:00 Data from: Estimating transient populations of unmarked individuals at a migratory stopover site using generalized N-mixture models Kwon, Eunbi Houghton, Lawrence M. Settlage, Robert E. Catlin, Daniel H. Karpanty, Sarah M. Fraser, James D. 2019-07-11 https://doi.org/10.5061/dryad.bc1k2b3 undefined unknown Dryad https://dx.doi.org/10.5061/dryad.bc1k2b3 http://dx.doi.org/10.5061/dryad.bc1k2b3 lic_creative-commons 10.5061/dryad.bc1k2b3 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:109636 oai:easy.dans.knaw.nl:easy-dataset:109636 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f tidal effect ruddy turnstone Dail-Madsen model immigration N-mixture model daily count data seasonal abundance detection probability Arenaria interpres (:tba) Life sciences medicine and health care envir stat Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2019 fttriple https://doi.org/10.5061/dryad.bc1k2b3 2023-01-22T16:51:02Z 1. Migration counts are popular indices used to monitor population trends over time. Advanced analytical methods for estimating abundance of unmarked, open populations now incorporate population growth models and simultaneously test for covariate effects on abundance and detection probability. However, estimating population abundance at a staging site is complicated by daily immigration and emigration of unmarked individuals. 2. We applied a set of generalized N-mixture models to simulated count data to test their applicability for transient populations. Using simulated datasets, parameters were unbiased when the apparent survival rate varied within a season or was mis-specified in a model, but not when the immigration or detection probability was mis-specified. 3. With knowledge from the simulated data, we applied these models to daily counts of staging migratory shorebirds and estimated daily abundances accounting for variation in the detection and immigration rates. Daily counts of ruddy turnstones (Arenaria interpres) staging at Westhampton Island, New York, were collected during northward migration (1997–1999). We tested the effects of weather and tides on detection probability, and we modeled within-season variation in immigration rates as a function of time. 4. Covariates affecting the detection probability differed among years, but tide height consistently was correlated with detection probability. Accounting for detection and immigration rates, the predicted maximum single-day populations of ruddy turnstones were 172%, 165%, and 129% of the observed counts for each year. 5. Synthesis and applications. Management and conservation plans for migratory species require abundance estimates that are near the true population size though they are difficult to obtain. Our study is the first empirical application of the generalized N-mixture model that incorporates temporal trends in immigration and estimates daily abundance of a staging unmarked migratory population. Correct estimation of population sizes and the ... Dataset Arenaria interpres Ruddy Turnstone Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
tidal effect ruddy turnstone Dail-Madsen model immigration N-mixture model daily count data seasonal abundance detection probability Arenaria interpres (:tba) Life sciences medicine and health care envir stat |
spellingShingle |
tidal effect ruddy turnstone Dail-Madsen model immigration N-mixture model daily count data seasonal abundance detection probability Arenaria interpres (:tba) Life sciences medicine and health care envir stat Kwon, Eunbi Houghton, Lawrence M. Settlage, Robert E. Catlin, Daniel H. Karpanty, Sarah M. Fraser, James D. Data from: Estimating transient populations of unmarked individuals at a migratory stopover site using generalized N-mixture models |
topic_facet |
tidal effect ruddy turnstone Dail-Madsen model immigration N-mixture model daily count data seasonal abundance detection probability Arenaria interpres (:tba) Life sciences medicine and health care envir stat |
description |
1. Migration counts are popular indices used to monitor population trends over time. Advanced analytical methods for estimating abundance of unmarked, open populations now incorporate population growth models and simultaneously test for covariate effects on abundance and detection probability. However, estimating population abundance at a staging site is complicated by daily immigration and emigration of unmarked individuals. 2. We applied a set of generalized N-mixture models to simulated count data to test their applicability for transient populations. Using simulated datasets, parameters were unbiased when the apparent survival rate varied within a season or was mis-specified in a model, but not when the immigration or detection probability was mis-specified. 3. With knowledge from the simulated data, we applied these models to daily counts of staging migratory shorebirds and estimated daily abundances accounting for variation in the detection and immigration rates. Daily counts of ruddy turnstones (Arenaria interpres) staging at Westhampton Island, New York, were collected during northward migration (1997–1999). We tested the effects of weather and tides on detection probability, and we modeled within-season variation in immigration rates as a function of time. 4. Covariates affecting the detection probability differed among years, but tide height consistently was correlated with detection probability. Accounting for detection and immigration rates, the predicted maximum single-day populations of ruddy turnstones were 172%, 165%, and 129% of the observed counts for each year. 5. Synthesis and applications. Management and conservation plans for migratory species require abundance estimates that are near the true population size though they are difficult to obtain. Our study is the first empirical application of the generalized N-mixture model that incorporates temporal trends in immigration and estimates daily abundance of a staging unmarked migratory population. Correct estimation of population sizes and the ... |
format |
Dataset |
author |
Kwon, Eunbi Houghton, Lawrence M. Settlage, Robert E. Catlin, Daniel H. Karpanty, Sarah M. Fraser, James D. |
author_facet |
Kwon, Eunbi Houghton, Lawrence M. Settlage, Robert E. Catlin, Daniel H. Karpanty, Sarah M. Fraser, James D. |
author_sort |
Kwon, Eunbi |
title |
Data from: Estimating transient populations of unmarked individuals at a migratory stopover site using generalized N-mixture models |
title_short |
Data from: Estimating transient populations of unmarked individuals at a migratory stopover site using generalized N-mixture models |
title_full |
Data from: Estimating transient populations of unmarked individuals at a migratory stopover site using generalized N-mixture models |
title_fullStr |
Data from: Estimating transient populations of unmarked individuals at a migratory stopover site using generalized N-mixture models |
title_full_unstemmed |
Data from: Estimating transient populations of unmarked individuals at a migratory stopover site using generalized N-mixture models |
title_sort |
data from: estimating transient populations of unmarked individuals at a migratory stopover site using generalized n-mixture models |
publisher |
Dryad |
publishDate |
2019 |
url |
https://doi.org/10.5061/dryad.bc1k2b3 |
genre |
Arenaria interpres Ruddy Turnstone |
genre_facet |
Arenaria interpres Ruddy Turnstone |
op_source |
10.5061/dryad.bc1k2b3 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:109636 oai:easy.dans.knaw.nl:easy-dataset:109636 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f |
op_relation |
https://dx.doi.org/10.5061/dryad.bc1k2b3 http://dx.doi.org/10.5061/dryad.bc1k2b3 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.bc1k2b3 |
_version_ |
1766353998890139648 |