Contents 1 Dansk Resumé 5 1.1 Metoder 6 1.2 Resultater af undersøgelsen 6 1.3 Konklusion 8 2 Summary 10 3 Introduction 13 3.1 Porpoises in Great Belt 13 3.2 The wind farm 14 3.3 Impact from wind farms 16 4 Methods 19 4.1 T-PODs 19 4.2 Deployment and service 21 4.3 Comparison of T-PODs during deployment 21 4.4 Indicators from T-POD signals 22 4.5 Models for indicators 23 5 Results 27 5.1 Data collected 27 5.2 Descriptive statistics – click PPM and PPM 27 5.3 Descriptive statistics – encounter duration and waiting time 30 5.4 BACI analysis 33 5.5 T-POD field intercalibration 36 6 Discussion 38 6.1 Variation between areas, stations T-PODs and with season 38 6.2 Effects of the wind farm 39 6.3 Impact of the wind farm on the habitat area 41 6.4 Limitations of the study 42 7 References 43 National Environmental Research Institute NERI technical reports
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