Using detection dogs to conduct simultaneous surveys of northern spotted (Strix occidentalis caurina) and barred owls (Strix varia).

State and federal actions to conserve northern spotted owl (Strix occidentalis caurina) habitat are largely initiated by establishing habitat occupancy. Northern spotted owl occupancy is typically assessed by eliciting their response to simulated conspecific vocalizations. However, proximity of barr...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Samuel K Wasser, Lisa S Hayward, Jennifer Hartman, Rebecca K Booth, Kristin Broms, Jodi Berg, Elizabeth Seely, Lyle Lewis, Heath Smith
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0149e8cad1004feb8ed9a161360abf59
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:0149e8cad1004feb8ed9a161360abf59
record_format	dspace
spelling	oai:doaj.org-article:0149e8cad1004feb8ed9a161360abf592021-11-18T07:08:38ZUsing detection dogs to conduct simultaneous surveys of northern spotted (Strix occidentalis caurina) and barred owls (Strix varia).1932-620310.1371/journal.pone.0042892https://doaj.org/article/0149e8cad1004feb8ed9a161360abf592012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22916175/?tool=EBIhttps://doaj.org/toc/1932-6203State and federal actions to conserve northern spotted owl (Strix occidentalis caurina) habitat are largely initiated by establishing habitat occupancy. Northern spotted owl occupancy is typically assessed by eliciting their response to simulated conspecific vocalizations. However, proximity of barred owls (Strix varia)-a significant threat to northern spotted owls-can suppress northern spotted owl responsiveness to vocalization surveys and hence their probability of detection. We developed a survey method to simultaneously detect both species that does not require vocalization. Detection dogs (Canis familiaris) located owl pellets accumulated under roost sites, within search areas selected using habitat association maps. We compared success of detection dog surveys to vocalization surveys slightly modified from the U.S. Fish and Wildlife Service's Draft 2010 Survey Protocol. Seventeen 2 km × 2 km polygons were each surveyed multiple times in an area where northern spotted owls were known to nest prior to 1997 and barred owl density was thought to be low. Mitochondrial DNA was used to confirm species from pellets detected by dogs. Spotted owl and barred owl detection probabilities were significantly higher for dog than vocalization surveys. For spotted owls, this difference increased with number of site visits. Cumulative detection probabilities of northern spotted owls were 29% after session 1, 62% after session 2, and 87% after session 3 for dog surveys, compared to 25% after session 1, increasing to 59% by session 6 for vocalization surveys. Mean detection probability for barred owls was 20.1% for dog surveys and 7.3% for vocal surveys. Results suggest that detection dog surveys can complement vocalization surveys by providing a reliable method for establishing occupancy of both northern spotted and barred owl without requiring owl vocalization. This helps meet objectives of Recovery Actions 24 and 25 of the Revised Recovery Plan for the Northern Spotted Owl.Samuel K WasserLisa S HaywardJennifer HartmanRebecca K BoothKristin BromsJodi BergElizabeth SeelyLyle LewisHeath SmithPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 8, p e42892 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Samuel K Wasser Lisa S Hayward Jennifer Hartman Rebecca K Booth Kristin Broms Jodi Berg Elizabeth Seely Lyle Lewis Heath Smith Using detection dogs to conduct simultaneous surveys of northern spotted (Strix occidentalis caurina) and barred owls (Strix varia).
description	State and federal actions to conserve northern spotted owl (Strix occidentalis caurina) habitat are largely initiated by establishing habitat occupancy. Northern spotted owl occupancy is typically assessed by eliciting their response to simulated conspecific vocalizations. However, proximity of barred owls (Strix varia)-a significant threat to northern spotted owls-can suppress northern spotted owl responsiveness to vocalization surveys and hence their probability of detection. We developed a survey method to simultaneously detect both species that does not require vocalization. Detection dogs (Canis familiaris) located owl pellets accumulated under roost sites, within search areas selected using habitat association maps. We compared success of detection dog surveys to vocalization surveys slightly modified from the U.S. Fish and Wildlife Service's Draft 2010 Survey Protocol. Seventeen 2 km × 2 km polygons were each surveyed multiple times in an area where northern spotted owls were known to nest prior to 1997 and barred owl density was thought to be low. Mitochondrial DNA was used to confirm species from pellets detected by dogs. Spotted owl and barred owl detection probabilities were significantly higher for dog than vocalization surveys. For spotted owls, this difference increased with number of site visits. Cumulative detection probabilities of northern spotted owls were 29% after session 1, 62% after session 2, and 87% after session 3 for dog surveys, compared to 25% after session 1, increasing to 59% by session 6 for vocalization surveys. Mean detection probability for barred owls was 20.1% for dog surveys and 7.3% for vocal surveys. Results suggest that detection dog surveys can complement vocalization surveys by providing a reliable method for establishing occupancy of both northern spotted and barred owl without requiring owl vocalization. This helps meet objectives of Recovery Actions 24 and 25 of the Revised Recovery Plan for the Northern Spotted Owl.
format	article
author	Samuel K Wasser Lisa S Hayward Jennifer Hartman Rebecca K Booth Kristin Broms Jodi Berg Elizabeth Seely Lyle Lewis Heath Smith
author_facet	Samuel K Wasser Lisa S Hayward Jennifer Hartman Rebecca K Booth Kristin Broms Jodi Berg Elizabeth Seely Lyle Lewis Heath Smith
author_sort	Samuel K Wasser
title	Using detection dogs to conduct simultaneous surveys of northern spotted (Strix occidentalis caurina) and barred owls (Strix varia).
title_short	Using detection dogs to conduct simultaneous surveys of northern spotted (Strix occidentalis caurina) and barred owls (Strix varia).
title_full	Using detection dogs to conduct simultaneous surveys of northern spotted (Strix occidentalis caurina) and barred owls (Strix varia).
title_fullStr	Using detection dogs to conduct simultaneous surveys of northern spotted (Strix occidentalis caurina) and barred owls (Strix varia).
title_full_unstemmed	Using detection dogs to conduct simultaneous surveys of northern spotted (Strix occidentalis caurina) and barred owls (Strix varia).
title_sort	using detection dogs to conduct simultaneous surveys of northern spotted (strix occidentalis caurina) and barred owls (strix varia).
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/0149e8cad1004feb8ed9a161360abf59
work_keys_str_mv	AT samuelkwasser usingdetectiondogstoconductsimultaneoussurveysofnorthernspottedstrixoccidentaliscaurinaandbarredowlsstrixvaria AT lisashayward usingdetectiondogstoconductsimultaneoussurveysofnorthernspottedstrixoccidentaliscaurinaandbarredowlsstrixvaria AT jenniferhartman usingdetectiondogstoconductsimultaneoussurveysofnorthernspottedstrixoccidentaliscaurinaandbarredowlsstrixvaria AT rebeccakbooth usingdetectiondogstoconductsimultaneoussurveysofnorthernspottedstrixoccidentaliscaurinaandbarredowlsstrixvaria AT kristinbroms usingdetectiondogstoconductsimultaneoussurveysofnorthernspottedstrixoccidentaliscaurinaandbarredowlsstrixvaria AT jodiberg usingdetectiondogstoconductsimultaneoussurveysofnorthernspottedstrixoccidentaliscaurinaandbarredowlsstrixvaria AT elizabethseely usingdetectiondogstoconductsimultaneoussurveysofnorthernspottedstrixoccidentaliscaurinaandbarredowlsstrixvaria AT lylelewis usingdetectiondogstoconductsimultaneoussurveysofnorthernspottedstrixoccidentaliscaurinaandbarredowlsstrixvaria AT heathsmith usingdetectiondogstoconductsimultaneoussurveysofnorthernspottedstrixoccidentaliscaurinaandbarredowlsstrixvaria
_version_	1718423832263393280

Using detection dogs to conduct simultaneous surveys of northern spotted (Strix occidentalis caurina) and barred owls (Strix varia).

Ejemplares similares