Birds in southern Öresund in relation to the wind farm at ... - Vattenfall

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Table 1. Number of boat surveys (Fig. 3) and aerial surveys (Fig. 5) undertaken in the study area during the different months and years. Antal båt (Fig. 3)- och flyginventeringar (Fig. 5) inom undersökningsområdet under olika år. Sept Oct Nov Dec Jan Feb March April May BOAT 2001/02 - - - 1 - 1 1 1 - 2002/03 1 - 1 1 1 - 1 1 - 2003/04 - - 1 - 1 1 1 1 - 2004/05 - - - - - - 1 1 - 2005/06 - - 1 1 - - - - - 2007/08 - - - 1 - 1 - 1 - 2008/09 1 - - - - - - - - 2009/10 1 - - - - - - - - 2010/11 - 1 - - - - - 1 1 AERIAL 2005/06 - - - - 1 1 1 1 1 2007/08 - - - - - - 2 1 1 2008/09 - - - 1 1 1 1 - 1 2009/10 - - - - - - 1 1 - 2010/11 - - - - 1 1 2 - 1 Aerial surveys Fig. 4. A CESSNA 337 Skymaster was used for the aerial surveys. CESSNA 337 Skymaster användes för flyginventeringarna. 18
Fig. 5. Map of the southern part of Öresund and waters south of Falsterbo with the aerial survey lines. N = the possible impact area (North) and S = reference area (South). For depth intervals see Fig.1 Karta över södra Öresund och farvattnen runt Falsterbo med de standardiserade flyginventeringslinjerna markerade. Djupnivåer se Fig. 1. N = möjligt påverkansområde (norr), S= kontroll område (söder). The aerial surveys were undertaken from a CESSNA 337 Skymaster (Fig. 4), a high-winged twin-engined aircraft with good visibility for the observers. The same aircraft and survey methods have been used as a standard for monitoring of offshore seabirds (mostly sea ducks) in Sweden over a number of years. During the surveys two observers were always employed covering each side of the aircraft. The survey speed was about 180 km/h and we flew the surveys at an altitude of 50-70 m above sea level. Observations were registered on tape or digital recorder and the position of the plane is continuously stored by GPS. We used separate GPS equipments for navigation and registration. The survey lines were separated by two km. The observers covered a sector of 200 m on each side of the aircraft. There is a “dead zone” just under the aircraft implying that the sector covered is a total of 320 m. Observations outside the survey belt were noted as “extra” observations in the data base. After the construction of the wind farm the survey lines 3 and 4 were modified so that they passed from SE to NW through the wind-farm (see example in the species maps). 19
Page 1 and 2: Birds in southern Öresund in relat
Page 3 and 4: Contents Summary 4 Svensk sammanfat
Page 5 and 6: the birds and/or the flocks, the be
Page 7 and 8: Metoder Inventeringarna av rastande
Page 9 and 10: Alfågel (Fig. 14-19) Alfågeln öv
Page 11 and 12: Liksom vid andra inventeringar av r
Page 13 and 14: Introduction Southern Öresund is a
Page 15 and 16: Lillgrund is situated in the southe
Page 17: had to be made with only one observ
Page 21 and 22: Fig. 6 . Map over the wind farm at
Page 23 and 24: transect was divided into 10 km lon
Page 25 and 26: Results Staging and wintering birds
Page 27 and 28: Table.3 Percentage of the total num
Page 29 and 30: Cormorant Phalacrocorax carbo As is
Page 31 and 32: Fig. 10. Summary distribution maps
Page 33 and 34: Overall Jacob’s index (D) for the
Page 35 and 36: Long-tailed Duck Clangula hyemalis
Page 37 and 38: ehind the large variation is that f
Page 41 and 42: Common Eider Somateria mollissima T
Page 47 and 48: Jacobs Index Jacobs Index 1 0,5 0 -
Page 49 and 50: 2500 2000 1500 1000 500 0 MIN MEAN
Page 51 and 52: Fig. 30. Details of Fig. 29 to show
Page 53 and 54: large-scale changes in abundance ar
Page 55 and 56: 600 500 400 300 200 100 0 MIN MEAN
Page 59 and 60: Jacobs Index Jacobs Index 1 0,5 0 -
Page 61 and 62: Lillgrund and the wind farm are sit
Page 63 and 64: The spring migration season, and he
Page 65 and 66: % of all echoes (flocks) 45 40 35 3
Page 67 and 68: % of all echoes (flocks) 20 15 10 5
Page 69 and 70:
% of all echoes (flocks) 70 60 50 4
Page 71 and 72:
irds given the assumptions used abo
Page 73 and 74:
% of all echoes (flocks) % of all e
Page 75 and 76:
% av alla ekon (flockar) 20 15 10 5
Page 77 and 78:
species, some species being better
Page 79 and 80:
area and from a Dutch farm show tha
Page 81 and 82:
distance from the farm, although mo
Page 83 and 84:
Literature Alerstam, T. 1972. Noctu
Page 85:
Petersen, I. K. & Fox A. D. 2007. C
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Birds in southern Öresund in relation to the wind farm at ... - Vattenfall

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