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

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each species we also show summary maps of the distribution before and after the establishment of the wind farm, whereas maps for the different years separately and divided upon season (the different winters, springs and autumns) are shown in the appendix. As is shown in Table 3 different species occur in different proportions in the northern and southern part of the aerial survey area. Thus the majority of the Red-breasted Mergansers were found in the Northern area of the study area, whereas the Long-tailed Ducks were mostly found south of Falsterbo in the Southern area with smaller numbers in the Northern area. The proportion of Eiders seen in the two parts varied between spring and winter surveys. In winter most Eiders were seen in the Southern area, whereas more Eiders were found in the Northern area during spring surveys, related to the large breeding colony on Saltholm and temporary staging flocks during the migration. Overall Jacob’s indices for the wind farm area and the adjacent buffer zone (up to 2 km from the wind farm) are shown in Table 4. In this table we show the indices for the whole preconstruction period (2001-2005 for the boat surveys, 2006 only for the aerial surveys) in comparison with the indices for the whole post-construction period (2007-2011 for the boat surveys, 2008-2011 for the aerial surveys). The indices are commented upon in the species texts below for respective species. In the species accounts we also show figures of the variation of indices between years (centered on midwinter). 26
Table.3 Percentage of the total number of counted individuals of the more important species seen in the northern part of the area (Fig. 5) during aerial surveys in January-May 2006 (pre-construction) and 2008-2011 (post-construction) based on the totals for all surveys in the different years. Number of surveys is shown in brackets. Andel (%) av det totala antalet inräknade individer vid samtliga flyginventeringar i jan- maj 2006 (före byggnation) och 2008- 2011(med vindkraftparken i drift) som räknats i det norra delområdet (områdesindelning se Fig. 5). Antalet inventeringar anges inom parentes. 2006 (5) 2008(4) 2009(5) 2010(2) 2011(4) % Total % Total % Total % Total % Total Cormorant Phalacrocorax carbo 94 934 36 416 70 521 98 157 93 120 Long-tailed Duck Clangula hyemalis 9 1051 12 1021 29 509 13 513 22 1176 Eider Somateria mollissima 74 4894 52 6416 11 6037 56 3455 30 10956 Red-breasted Merganser Mergus serrator 72 984 78 1002 84 801 90 850 92 2348 Herring Gull Larus argentatus 59 605 77 804 37 459 44 264 55 757
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 and 18: had to be made with only one observ
Page 19 and 20: Fig. 5. Map of the southern part of
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: Results Staging and wintering birds
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 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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