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dc.contributor.authorAniceto, Ana Sofia
dc.contributor.authorBiuw, Martin
dc.contributor.authorLindstrøm, Ulf
dc.contributor.authorSolbø, Stian
dc.contributor.authorBroms, Fredrik Björn
dc.contributor.authorCarroll, JoLynn
dc.date.accessioned2018-08-21T08:55:36Z
dc.date.available2018-08-21T08:55:36Z
dc.date.issued2018-03-08
dc.description.abstractUnmanned aerial vehicles (UAVs) are increasingly being recognized as potentially useful for detection of marine mammals in their natural habitats, but an important consideration is the associated uncertainties in animal detection. We present a study based on field trials using UAVs to carry out image‐based monitoring of cetaceans in two fjords in northern Norway. We conducted 12 missions to assess the effects of both environmental‐ and aircraft‐related variables on detection certainty. Images were inspected for animal presence and its associated detection certainty. Images were also assessed for potentially important covariates such as wave turbulence (sea state), luminance, and glare. Aircraft variables such as altitude, pitch, and roll were combined into a single variable—pixel size. We recorded a total of 50 humpback whales, 63 killer whales (KW), and 118 unidentified sightings. We also recorded 57 harbor porpoise sightings. None of the environmental conditions (sea state, glare, and luminance) affected the detection certainty of harbor porpoises. In contrast, increasing sea state and luminance had negative and positive effects, respectively, on the detection certainty of humpback and KW. The detection certainty was not significantly affected by pixel size for both harbor porpoises, and humpback and KW. Our results indicate that at lower altitudes, variations in aircraft position (pitch and roll) do not have a variable effect on detection certainty. Overall, this study shows the importance of measuring variability in both environmental and flight‐related variables, in order to attain unbiased estimates of detectability for UAV‐based marine mammal surveys, particularly in Arctic and sub‐Arctic regions.en_US
dc.description.sponsorshipAkvaplan‐niva and by ARCExen_US
dc.descriptionSource at <a href=https://doi.org/10.1002/ecs2.2122> https://doi.org/10.1002/ecs2.2122</a>. Licensed <a href=http://creativecommons.org/licenses/by-nc-nd/4.0/> CC BY-NC-ND 4.0.</a>en_US
dc.identifier.citationAniceto, A.S., Biuw, M., Lindstrøm, U., Solbø, S.A., Broms, F.B. & Carroll, J. (2018). Monitoring marine mammals using unmanned aerial vehicles: Quantifying detection certainty. Ecosphere, 9(3). https://doi.org/10.1002/ecs2.2122en_US
dc.identifier.cristinIDFRIDAID 1582445
dc.identifier.doi10.1002/ecs2.2122
dc.identifier.issn2150-8925
dc.identifier.urihttps://hdl.handle.net/10037/13494
dc.language.isoengen_US
dc.publisherEcological Society of Americaen_US
dc.relation.ispartofAniceto, A.S. (2018). Unmanned aerial vehicles for marine mammal surveys in arctic and sub-arctic regions. Doctoral thesis. <a href=http://hdl.handle.net/10037/14008>http://hdl.handle.net/10037/14008</a>
dc.relation.journalEcosphere
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/PETROSENTR/228107/Norway/Research Centre for Arctic Petroleum Exploration/ARCEx/en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Teknologi: 500::Marin teknologi: 580::Annen marin teknologi: 589en_US
dc.subjectVDP::Technology: 500::Marine technology: 580::Other marine technology: 589en_US
dc.subjectcertaintyen_US
dc.subjectdetectionen_US
dc.subjectmarine mammalsen_US
dc.subjectsurveyen_US
dc.subjectunmanned aerial vehiclesen_US
dc.titleMonitoring marine mammals using unmanned aerial vehicles: quantifying detection certaintyen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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