Offshore wind farms and the attraction–production hypothesis: insights from a combination of stomach content and stable isotope analyses
Offshore wind farms and the attraction–production hypothesis: insights from a combination of stomach content and stable isotope analyses
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海上风电场和吸引力-生产假说：胃内容物和稳定同位素分析相结合的见解
DOI：
10.1007/s10750-021-04553-6
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发表时间：
2021
期刊：
影响因子：
2.6
通讯作者：
J. Vanaverbeke
中科院分区：
文献类型：
--
作者：
N. Mavraki;S. Degraer;J. Vanaverbeke
海上风电场（OWF）作为人工鱼礁，吸引了大量的鱼类，这可能会增加当地的产量。本研究调查了大量发生在人工栖息地，如OWF的鱼类的摄食生态学，通过检查的短期和长期的饮食组成的五个物种：底栖的Gadus morhua和Trisopterus luscus，远洋的Scomber scombrus和Trachurus trachurus，和底栖的Myoxocephalus scorpioides。我们进行了联合胃内容物和稳定同位素分析，以检查短期和时间综合膳食组成，分别。我们的研究结果表明，底栖和底栖物种利用人工鱼礁，如OWF，作为长期的喂养场，因为这两个分析表明，他们利用污损生物只发生在人造硬基板。竹荚鱼只是偶尔使用人工鱼礁作为资源丰富的绿洲。鲭鱼scombrus不饲料的污损动物，因此，其增加的存在OWF可能是有关的原因，而不是提高粮食供应。底栖和深海物种的长期摄食偏好有助于假设OWF的人工鱼礁可能会增加该地区的鱼类产量。然而，这一观点不适用于中上层鱼种。
Offshore wind farms (OWFs) act as artificial reefs, attracting high abundances of fish, which could potentially increase their local production. This study investigates the feeding ecology of fish species that abundantly occur at artificial habitats, such as OWFs, by examining the short- and the long-term dietary composition of five species: the benthopelagic Gadus morhua and Trisopterus luscus, the pelagic Scomber scombrus and Trachurus trachurus, and the benthic Myoxocephalus scorpioides. We conducted combined stomach content and stable isotope analyses to examine the short- and the time-integrated dietary composition, respectively. Our results indicated that benthopelagic and benthic species utilize artificial reefs, such as OWFs, as feeding grounds for a prolonged period, since both analyses indicated that they exploit fouling organisms occurring exclusively on artificial hard substrates. Trachurus trachurus only occasionally uses artificial reefs as oases of highly abundant resources. Scomber scombrus does not feed on fouling fauna and therefore its augmented presence in OWFs is probably related to reasons other than the enhanced food availability. The long-termed feeding preferences of benthic and benthopelagic species contribute to the hypothesis that the artificial reefs of OWFs could potentially increase the fish production in the area. However, this was not supported for the pelagic species.