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The Ornithodolite as a tool to quantify animal space use and habitat selection: a case study with birds diving in tidal waters

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Integrative Zoology 2019年第1期14卷 4-16页

作者： Emma-Louise COLE James J WAGGITT anders hedenstrom Marco PIANO Mark D.HOLTON Luca BÖRGER Emily L.C.SHEPARD Department of Biosciences Swansea UniversitySwanseaUK School of Ocean Sciences Bangor UniversityMenai BridgeUK Department of Biology Lund UniversityEcology BuildingSweden Centre for Applied Marine Sciences Bangor UniversityMenai BridgeUK

Animal-attached technologies can be powerful means to quantify space use and behavior;however,there are also ethical implications associated with capturing and instrumenting ***,tagging approaches are not necessarily well-suited for examining the movements of multiple individuals within specific,local areas of ***,we assess a method of quantifying animal space use based on a modified theodolite with an inbuilt laser *** a database of>4200 tracks of migrating birds,we show that detection distance in-creases with bird body mass(range 5 g to>10 kg).The maximum distance recorded to a bird was 5500 m and measurement error was≤5 m for targets within this distance range:a level comparable to methods such as GPS *** go on to present a case study where this method was used to assess habitat selection in seabirds operating in dynamic coastal waters close to a tidal *** positional data with outputs from a hydrographic model revealed that great cormorants(Phalacrocorax carbo)appeared to be highly selective of current characteristics in space and time,exploiting areas where mean current speeds were<0.8 m∙s^(−1) and diving at times when turbulent energy levels were *** birds also oriented into tidal currents during *** together,this suggests that collision risks are low for cormorants at this site,as the 2 conditions avoided by cormorants(high mean current speeds and turbulence levels)are associated with operational tidal ***-all,we suggest that this modified theodolite system is well-suited to the quantification of movement in small areas associated with particular development strategies,including sustainable energy devices.

关键词： GPS habitat use movement ecology seabird tidal turbine

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