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标题：Changes in distribution and lengths of Mnemiopsis leidyi in the central Baltic Sea between fall and spring
其他标题：Changes in distribution and lengths of Mnemiopsis leidyi in the central Baltic Sea between fall and spring
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作者：Marie Storr-Paulsen
期刊名称：Aquatic Invasions
印刷版ISSN：1798-6540
电子版ISSN：1818-5487
出版年度：2008
卷号：3
期号：4
页码：429-434
DOI：10.3391/ai.2008.3.4.9
摘要：In March 2008, we conducted a survey to investigate the distribution and abundance of the invasive ctenophore Mnemiopsis leidyi in the Bornholm Basin after the winter period. Compared to the situation in November 2007 the centre of the distribution had shifted towards the deeper parts of the Basin where temperatures were higher than at the surface. Furthermore, we found a decrease in average size from 18.6 mm � 7.6 SD in November to an average of 10.5 mm � 4.9 SD in March, which may indicate the emergence of a new generation of M. leidyi between the two sampling dates.
关键词：Mnemiopsis leidyi;Ctenophora;invasive species;Baltic Sea;Bornholm Basin