Item talk:Q253141
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{
"USGS Publications Warehouse": { "@context": "https://schema.org", "@type": "Article", "additionalType": "Journal Article", "name": "Using density surface models to estimate spatio-temporal changes in population densities and trend", "identifier": [ { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "70211887", "url": "https://pubs.usgs.gov/publication/70211887" }, { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse Internal ID", "value": 70211887 }, { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1111/ecog.04859", "url": "https://doi.org/10.1111/ecog.04859" } ], "journal": { "@type": "Periodical", "name": "Ecography", "volumeNumber": "43", "issueNumber": "7" }, "inLanguage": "en", "isPartOf": [ { "@type": "CreativeWorkSeries", "name": "Ecography" } ], "datePublished": "2020", "dateModified": "2020-08-12", "abstract": "Precise measures of population abundance and trend are needed for species conservation; these are most difficult to obtain for rare and rapidly changing populations. We compare uncertainty in densities estimated from spatio\u2013temporal models with that from standard design\u2010based methods. Spatio\u2013temporal models allow us to target priority areas where, and at times when, a population may most benefit. Generalised additive models were fitted to a 31\u2010year time series of point\u2010transect surveys of an endangered Hawaiian forest bird, the Hawai\u2018i \u2018\u0101kepa Loxops coccineus . This allowed us to estimate bird densities over space and time. We used two methods to quantify uncertainty in density estimates from the spatio\u2013temporal model: the delta method (which assumes independence between detection and distribution parameters) and a variance propagation method. With the delta method we observed a 52% decrease in the width of the design\u2010based 95% confidence interval (CI), while we observed a 37% decrease in CI width when propagating the variance. We mapped bird densities as they changed across space and time, allowing managers to evaluate management actions. Integrating detection function modelling with spatio\u2013temporal modelling exploits survey data more efficiently by producing finer\u2010grained abundance estimates than are possible with design\u2010based methods as well as producing more precise abundance estimates. Model\u2010based approaches require switching from making assumptions about the survey design to assumptions about bird distribution. Such a switch warrants consideration. In this case the model\u2010based approach benefits conservation planning through improved management efficiency and reduced costs by taking into account both spatial shifts and temporal changes in population abundance and distribution.", "description": "11 p.", "publisher": { "@type": "Organization", "name": "Wiley" }, "author": [ { "@type": "Person", "name": "Camp, Richard J. rick_camp@usgs.gov", "givenName": "Richard J.", "familyName": "Camp", "email": "rick_camp@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0001-7008-923X", "url": "https://orcid.org/0000-0001-7008-923X" }, "affiliation": [ { "@type": "Organization", "name": "Pacific Island Ecosystems Research Center", "url": "https://www.usgs.gov/pacific-island-ecosystems-research-center" }, { "@type": "Organization", "name": "Pacific Islands Ecosys Research Center", "url": "https://www.usgs.gov/centers/pacific-islands-water-science-center" } ] }, { "@type": "Person", "name": "Miller, David L", "givenName": "David L", "familyName": "Miller", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0002-9640-6755", "url": "https://orcid.org/0000-0002-9640-6755" }, "affiliation": [ { "@type": "Organization", "name": "University of St Andrews, CREEM" } ] }, { "@type": "Person", "name": "Thomas, Len", "givenName": "Len", "familyName": "Thomas", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0002-7436-067X", "url": "https://orcid.org/0000-0002-7436-067X" } }, { "@type": "Person", "name": "Buckland, Steve T.", "givenName": "Steve T.", "familyName": "Buckland", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0002-9939-709X", "url": "https://orcid.org/0000-0002-9939-709X" } }, { "@type": "Person", "name": "Kendall, Steve J.", "givenName": "Steve J.", "familyName": "Kendall", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0002-9290-5629", "url": 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