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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Impact of round goby on native invertebrate communities - An experimental field study
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Impact of round goby on native invertebrate communities - An experimental field study

机译：圆形曲面对原生无脊椎动物社区的影响 - 实验田间研究

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摘要

This experimental field study provides first insights into the impact of a widely spread non-native fish species, round goby Neogobius melanostomus (Pallas 1814), on the diversity of native epifaunal macroinvertebrate communities in the Baltic Sea. A cage experiment was conducted in a macrophyte habitat in the Aland islands located in the northern Baltic Sea. Round gobies (13.5 +/- 0.8 cm) affected macroinvertebrate biodiversity from a taxonomic and a trait-based point of view. Specifically, round goby decreased overall abundance, biomass and taxon richness of epifaunal invertebrates. Additionally, taxonomic and trait-based composition were affected, as the gobies reduced abundances of common bivalve (Cerastoderma spp. and Mytilus sp.) and gastropod species (Hydrobia spp.), and thereby modified the relative trait composition of the invertebrate assemblages. Round gobies consumed mainly larger epifaunal individuals leading to an overall decrease in invertebrate body size. Such alterations in taxonomic and trait-based diversity and composition of invertebrate communities through round goby predation may have implications for native fish species and other trophic levels in the respective food webs through food competition and trophic cascades. Round gobies might therefore affect ecosystem processes in invaded areas, and thus influence ecosystem functioning and services.
机译：该实验领域的研究提供了对广泛蔓延的非本土鱼类，圆形戈盖Neogobius melanostomus（Pallas 1814）的影响的第一洞察书，对波罗的海的天然Epifaunal Macroinvertebrys群落的多样性。笼子实验是在位于波罗的海北部的Aland岛屿的宏观物质栖息地进行。圆形胶虫（13.5 +/- 0.8厘米）从分类学和基于特质的观点来影响大型脊椎动物生物多样性。具体而言，圆形曲面减少了Epifaunal无脊椎动物的总体丰富，生物质和分类富裕性。此外，基于分类和基于特性的组合物受到影响，因为血管常见的常见双戊丝（Cerastoderma SPP和Mytolus sp.）和胃肠杆菌物种（氢植物SPP）的丰富量减少了丰富的。从而改变了无脊椎动物组合的相对特征组合物。圆形胶虫主要消耗较大的epifaunal个体，导致无脊椎动物体积的总体减少。通过圆形曲面捕食的分类和基于分类和基于特质的多样性以及无脊椎动物组成的改变可能对各种食物纤维网的本土鱼类和其他营养水平通过食物竞争和营养级联来影响。因此，圆形胶虫可能会影响入侵地区的生态系统流程，从而影响生态系统运行和服务。

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