Combining point counts and autonomous recording units improves avian survey efficacy across elevational gradients on two continents

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dc.contributor.authorDrake, Anna
dc.contributor.authorde Zwaan, Devin R.
dc.contributor.authorAltamirano, Tomas A.
dc.contributor.authorWilson, Scott
dc.contributor.authorHick, Kristina
dc.contributor.authorBravo, Camila
dc.contributor.authorIbarra Eliessetch, José Tomás
dc.contributor.authorMartin, Kathy
dc.date.accessioned2024-01-10T13:10:26Z
dc.date.available2024-01-10T13:10:26Z
dc.date.issued2021
dc.description.abstractAccurate biodiversity and population monitoring is a requirement for effective conservation decision making. Survey method bias is therefore a concern, particularly when research programs face logistical and cost limitations. We employed point counts (PCs) and autonomous recording units (ARUs) to survey avian biodiversity within comparable, high elevation, temperate mountain habitats at opposite ends of the Americas: nine mountains in British Columbia (BC), Canada, and 10 in southern Chile. We compared detected species richness against multiyear species inventories and examined method-specific detection probability by family. By incorporating time costs, we assessed the performance and efficiency of single versus combined methods. Species accumulation curves indicate ARUs can capture ~93% of species present in BC but only ~58% in Chile, despite Chilean mountain communities being less diverse. The avian community, rather than landscape composition, appears to drive this dramatic difference. Chilean communities contain less-vocal species, which ARUs missed. Further, 6/13 families in BC were better detected by ARUs, while 11/11 families in Chile were better detected by PCs. Where survey conditions differentially impacted method performance, PCs mostly varied over the morning and with canopy cover in BC, while ARUs mostly varied seasonally in Chile. Within a single year of monitoring, neither method alone was predicted to capture the full avian community, with the exception of ARUs in the alpine and subalpine of BC. PCs contributed little to detected diversity in BC, but including this method resulted in negligible increases in total time costs. Combining PCs with ARUs in Chile significantly increased species detections, again, for little cost.Combined methods were among the most efficient and accurate approaches to capturing diversity. We recommend conducting point counts, while ARUs are being deployed and retrieved in order to capture additional diversity with minimal additional effort and to flag methodological biases using a comparative framework
dc.description.funderWerner and Hildegard Hesse Graduate Research Award
dc.description.funderNatural Sciences and Engineering Research Council of Canada (NSERC)
dc.description.funderChilean Ministry of the Environment
dc.description.funderComision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)
dc.description.funderComision Nacional de Investigacion Cientifica y Tecnologica (FONDECYT de Inicio)
dc.description.funderChilean Forestry Service
dc.description.funderCONICYT
dc.description.funderGoGlobal program at UBC
dc.fechaingreso.objetodigital04-04-2024
dc.format.extent29 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1002/ece3.7678
dc.identifier.issn2045-7758
dc.identifier.urihttps://doi.org/10.1002/ece3.7678
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77854
dc.identifier.wosidWOS:000656442600001
dc.information.autorucVillarrica ; Ibarra Eliessetch, José Tomás ; 0000-0002-7705-3974 ; 120091
dc.language.isoen
dc.nota.accesoContenido completo
dc.publisherWILEY
dc.revistaECOLOGY AND EVOLUTION
dc.rightsacceso abierto
dc.subjectalpine
dc.subjectARUs
dc.subjectavian diversity
dc.subjectbiodiversity monitoring
dc.subjectbird surveys
dc.subjecthigh mountain biodiversity
dc.subjectspecies richness
dc.subjectsubalpine
dc.subjectACOUSTIC RECORDINGS
dc.subjectPROTECTED AREAS
dc.subjectR PACKAGE
dc.subjectRICHNESS
dc.subjectFOREST
dc.subjectBIRDS
dc.subjectDIVERSITY
dc.subjectABUNDANCE
dc.subjectOBSERVERS
dc.subjectMODELS
dc.subject.ods15 Life on Land
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleCombining point counts and autonomous recording units improves avian survey efficacy across elevational gradients on two continents
dc.typeartículo
sipa.codpersvinculados120091
sipa.indexWOS
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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