{"refrec":{"BRefID":353668,"RR":"<b>Beardsworth, C.E; Gobbens, E.; van Maarseveen, F.; Denissen, B.; Dekinga, A.; Nathan, R.; Toledo, S.; Bijleveld, A.I.</b> (2022). Validating <scp>ATLAS</scp>: A regional‐scale high‐throughput tracking system. <i>Methods Ecol. Evol. 13(9)</i>: 1990-2004. <a href=\"https://dx.doi.org/10.1111/2041-210x.13913\" target=\"_blank\">https://dx.doi.org/10.1111/2041-210x.13913</a>","BEntID":351378,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Methods Ecol. Evol. 13(9)</i>: 1990-2004. <a href=\"https://dx.doi.org/10.1111/2041-210x.13913\" target=\"_blank\">https://dx.doi.org/10.1111/2041-210x.13913</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Beardsworth, C.E; Gobbens, E.; van Maarseveen, F.; Denissen, B.; Dekinga, A.; Nathan, R.; Toledo, S.; Bijleveld, A.I.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Beardsworth, C.E <i>et al.</i>","Englishabstract":"<ol start=\"1\" type=\"1\">    <li>        Fine-scale tracking of animal movement is important to understand the        proximate mechanisms of animal behaviour. The reverse-GPS        system—ATLAS—uses inexpensive (~€25), lightweight (<1 g) and        low-power (~0.4 mJ/transmission) tags. Six systems are now operational        worldwide and have successfully tracked over 50 species in various        landscape types. The growing use of ATLAS to track animal movement        motivates further refinement of best-practice application and an        assessment of its accuracy.    </li>    <li>        Here, we test the accuracy and precision of the largest ATLAS system,        located in the Dutch Wadden Sea, using concurrent GPS measurements as a        reference. This large-scale ATLAS system consists of 26 receivers and        covers 1,326 km<sup>2</sup> of intertidal region, with almost no        physical obstacles for radio signals, providing a useful baseline for        other systems. We compared ATLAS and GPS location estimates for a route        (mobile test) and 16 fixed locations (stationary test) on the Griend        mudflat. Precision was estimated using standard deviation during thestationary tests. We also give examples of tracked red knots        <em>Calidris canutus islandica</em> to illustrate the use of the system        in tracking small shorebirds (~120 g).    </li>    <li>        ATLAS-derived location estimates differed from GPS by a median of 4.2 m        (stationary test) and 5.7 m (mobile test). Signals that were collected        by more receiver stations were more accurate, although even        three-receiver localisations were comparable with GPS localisations        (~10 m difference). Receivers that detected 90% of the 1 Hz        transmissions from our test tag were within 5 km of their furthest        detection but height of both receiver and tag seemed to influence        detection distance. The test tag (1 Hz) had a fix rate of >90% at 15        of 16 stationary sites. Tags on birds (1/6 Hz) on the Griend mudflat        had a mean fix rate of 51%, yielding an average sampling rate of        0.085 Hz. Fix rates were higher in more central parts of the receiver        array.    </li>    <li>        ATLAS provides accurate, regional-scale tracking with which hundreds of        relatively small-bodied species can be tracked simultaneously for long        periods of time. Future ATLAS users should consider the height of        receivers, their spatial arrangement, density and the movement modes of        their study species (e.g. ground-dwelling or flying).    </li></ol>","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Validating <scp>ATLAS</scp>: A regional‐scale high‐throughput tracking system","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-20 01:32:51.688327","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"accuracy; animal tracking; ATLAS; movement ecology; positioning error; radio tags; reverse GPS; telemetry","OtherDescriptors":null,"Notes":null,"AnaPub":2022,"MonPub":null,"DateUpdate":"2023-01-24","DateCreate":"2022-07-12","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000819666700001","VABBcode":null,"OpenAcc":1,"DOI":"10.1111/2041-210x.13913"},"refs":null,"anarec":{"AnaID":353668,"PubliDate":2022,"Pagination":"1990-2004","XtraPublOfAnaID":null,"ISBN":null,"Volume":"13","Issue":"9","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":205126,"SerRR":"Methods in Ecology and Evolution. 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