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

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% of all echoes (flocks) 40 35 30 25 20 15 10 5 0 Lillgrund A B C Sector D E 72 2001 2008 2010 Fig. 52. Distribution of bird echoes (bird flocks) with south-westerly flight directions recorded by radar over southern Öresund during autumn 2001 pre- (filled bars) and 2008 and 2009 post-construction (open bars) of the wind farm at Lillgrund for the different 10 km sectors A-E (see Fig. 7 and 51) Fördelningen av fågelekon (flockar) med sydvästliga flygriktningar registrerade med radar över södra Öresundsområdet under hösten 2001 (före etablering av vindkraftparken på Lillgrund, grå staplar) samt 2008 och 2009 (efter att parken tagits i drift, vita staplar), fördelat på 10 km-sektorerna A-E (se Fig. 7 and 51). A much higher proportion of the overall migration volume in autumn passed during day time (the light hours of the day, 76 %) compared to in spring (56 %, see above). Night migration made up 24 % of the total migration volume in autumn. A somewhat lower proportion of all flocks passed over sector C during day-time with wind farm in operation compared to the preconstruction year 2001 (- 15 %). At night there was almost no difference in the proportion of flocks passing sector C between the pre- and post construction years (- 2 % on average, Fig. 53).
% of all echoes (flocks) % of all echoes (flocks) 40 35 30 25 20 15 10 5 0 40 35 30 25 20 15 10 5 0 Lillgrund A B C Sector D E Lillgrund A B C Sector D E 73 Day-time 2001 2008 2009 Night-time 2001 2008 2009 Fig. 53. Distribution of bird echoes (flocks) with south-westerly flight directions in autumn 2001 pre- (filled bars) and 2008, 2009 post- (open bars) construction of the wind farm at Lillgrund on along the transect A-E (se Fig. 7 and 51) for day (top) and night (bottom) migration separately. Fördelningen av fågelekon (flockar) med sydvästliga flygriktningar registrerade med radar över södra Öresundsområdet under höstarna 2001 (före etablering av vindkraftparken på Lillgrund, grå staplar) och 2008, 2009 (efter att parken tagits i drift, vita staplar), fördelat på 10 km-sektorerna A-E (se Fig. 7 och 51) och för dagsträck (ovan) och nattsträck (under) separat.
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Birds in southern Öresund in relat
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Contents Summary 4 Svensk sammanfat
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the birds and/or the flocks, the be
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Metoder Inventeringarna av rastande
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Alfågel (Fig. 14-19) Alfågeln öv
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Liksom vid andra inventeringar av r
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Introduction Southern Öresund is a
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Lillgrund is situated in the southe
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had to be made with only one observ
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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 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 71: irds given the assumptions used abo
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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