Benthic Communities at Horns Rev Before, During and After Con
Benthic Communities at Horns Rev Before, During and After Con
Benthic Communities at Horns Rev Before, During and After Con
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<strong>Horns</strong> <strong>Rev</strong>. <strong>Benthic</strong> communities Page 45<br />
Table 3.8. Level of significance (**P 0.05 > 0.05 > 0.05 > 0.05<br />
1999 Reference > 0.05 > 0.05 > 0.05 > 0.05<br />
2001 Wind farm > 0.05 > 0.05 0.028*<br />
2005 Wind farm > 0.05 > 0.05<br />
2005 Reference > 0.05<br />
2005 Extended reference<br />
2000<br />
1500<br />
1000<br />
500<br />
0<br />
ANOVA analysis 1999 1999 2001 2005 2005 2005<br />
Orbinia sertul<strong>at</strong>a Wind farm Reference Wind farm Wind farm Reference Extended reference<br />
1999 Wind farm > 0.05 > 0.05 > 0.05 > 0.05 > 0.05<br />
1999 Reference > 0.05 > 0.05 > 0.05 0.008**<br />
2001 Wind farm > 0.05 > 0.05 0.014*<br />
2005 Wind farm > 0.05 > 0.05<br />
2005 Reference > 0.05<br />
2005 Extended reference<br />
ANOVA analysis 1999 1999 2001 2005 2005 2005<br />
Spisula solida Wind farm Reference Wind farm Wind farm Reference Extended reference<br />
1999 Wind farm > 0.05 > 0.05 > 0.05 > 0.05 > 0.05<br />
1999 Reference > 0.05 > 0.05 > 0.05 > 0.05<br />
2001 Wind farm > 0.05 > 0.05 0.01*<br />
2005 Wind farm > 0.05 > 0.05<br />
2005 Reference > 0.05<br />
2005 Extended reference<br />
ANOVA analysis 1999 1999 2001 2005 2005 2005<br />
Travisia forbesii Wind farm Reference Wind farm Wind farm Reference Extended reference<br />
1999 Wind farm > 0.05 > 0.05 0.02* > 0.05 > 0.05<br />
1999 Reference > 0.05 > 0.05 > 0.05 > 0.05<br />
2001 Wind farm 0.001** 0.049* > 0.05<br />
2005 Wind farm > 0.05 0.009**<br />
2005 Reference > 0.05<br />
2005 Extended reference<br />
ANOVA analysis 1999 1999 2001 2005 2005 2005<br />
Thracia phaseolina Wind farm Reference Wind farm Wind farm Reference Extended reference<br />
1999 Wind farm > 0.05 0.007** > 0.05 > 0.05 > 0.05<br />
1999 Reference 0.005** > 0.05 > 0.05 > 0.05<br />
2001 Wind farm > 0.05 > 0.05 > 0.05<br />
2005 Wind farm > 0.05 > 0.05<br />
2005 Reference > 0.05<br />
2005 Extended reference<br />
ANOVA analysis 1999 1999 2001 2005 2005 2005<br />
Ensis americanus Wind farm Reference Wind farm Wind farm Reference Extended reference<br />
1999 Wind farm > 0.05 > 0.05 > 0.05 > 0.05 0.002**<br />
1999 Reference > 0.05 > 0.05 > 0.05 0.001**<br />
2001 Wind farm > 0.05 > 0.05 < 001**<br />
2005 Wind farm > 0.05 0.027*<br />
2005 Reference > 0.05<br />
2005 Extended reference<br />
No/m² Total abundance<br />
2001 2003 2004<br />
400<br />
300<br />
200<br />
100<br />
0<br />
WW g/m² Total biomass<br />
2001 2003 2004<br />
Wind farm area<br />
Reference area<br />
Figure 3.6. Total abundance <strong>and</strong> total biomass in the wind farm <strong>and</strong> reference areas from 2001 to 2004. Autumn<br />
samples.<br />
A r<strong>at</strong>her heterogeneous sp<strong>at</strong>ial distribution p<strong>at</strong>tern was displayed for more of the most<br />
dominant <strong>and</strong> character species in 2005 (Figure 3.8). One of the main differences in the<br />
sp<strong>at</strong>ial distribution was found for the American razor shell (Ensis americanus), which was<br />
most abundant in the northwestern part of the extended reference area. The consequence<br />
of this was a conspicuously larger biomass in this particular area <strong>and</strong> in the extended reference<br />
area in general compared to the wind farm area <strong>and</strong> in lesser extent the reference<br />
area, where this mussel also was found. The small mussel (Goodallia triangularis) was<br />
most common in the wind farm area, whereas Thracia phaseolina seemed to be more ho-<br />
Doc. No. 2572-03-005 rev. 4