Baseline study Fish, fry and commercial fishery Nysted Offshore ...
Baseline study Fish, fry and commercial fishery Nysted Offshore ...
Baseline study Fish, fry and commercial fishery Nysted Offshore ...
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Bio/consult as Page 46<br />
3.8.5. Comments on the remaining species<br />
No particularly rare species were caught in the present survey.<br />
The hornfish was not included as selected indicator species because of their extremely<br />
migratory behaviour, <strong>and</strong> because no specific stocks are strongly associated with Danish<br />
coastal waters in comparison to the Baltic herring. They do however, warrant<br />
mentioning due to the large abundance in the samples.<br />
The length of hornfish ranged from 50–80 cm. Most individuals caught during May<br />
were females with well-developed gonads whereas individuals caught in June primarily<br />
consisted of mature males. Due to the developmental stage of gonads, it is most<br />
probable that spawning occurs in both areas. Concerning reflection <strong>and</strong> shadowing from<br />
the mills the hornfish may be a potential indicator species because they reside near the<br />
water surface, are abundant <strong>and</strong> cover large areas.<br />
Only seven individuals of the common eel were caught, four in May three in June. All<br />
eels were small averaging 151 gram in weight.<br />
Figure 3.8.19. No particular rare species were caught during the execution of the baseline studies.<br />
Though, many species rarely seen by the public where caught in the area of Røds<strong>and</strong><br />
(Left; longspined bullhead: Right; Hooknose)<br />
3.8.6. Statistical comparison of areas.<br />
Figures 3.8.19. <strong>and</strong> 3.9.20 visualises the development of abundance <strong>and</strong> weight<br />
respectively over time between the wind farm area <strong>and</strong> reference area. This visualising<br />
can only be used as guidelines for most of the species because of the low catch<br />
numbers.<br />
There seems to be higher abundance of Baltic herring <strong>and</strong> Atlantic cod in the reference<br />
area, whereas eelpout seems to occur in higher number in the Wind farm area. As the<br />
only species, great s<strong>and</strong>eel <strong>and</strong> turbot indicate effect of interference for both number<br />
<strong>and</strong> weight, but according to the test results this seems not to be the case, probably<br />
caused by the low number caught.<br />
Effect of interference concerning number only occurs for the species short-spined sea<br />
scorpion <strong>and</strong> great s<strong>and</strong>eel, even though short-spined sea scorpion doesn’t indicate this<br />
SEAS. <strong>Baseline</strong> <strong>study</strong> – <strong>Fish</strong>, <strong>fry</strong> <strong>and</strong> <strong>commercial</strong> <strong>fishery</strong> Dok. nr. 2148-03-001-rev3 2P.doc
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