人工结构上的软体动物群落:巴西东北部港口的生物入侵视角

IF 2.2 3区 环境科学与生态学 Q2 ECOLOGY
D. Bezerra, W. Franklin, Paula Spotorno, C. Barreira
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引用次数: 0

摘要

随着海岸发展对自然生态系统的冲击,我们越来越有必要研究人工生境对海洋物种分布和丰度的影响。特别是,要了解物理因素如何影响港口人工结构沿线的底栖生物群落分布模式,这为各种非本地物种(NIS)创造了可能性。本文的目的是比较软体动物群落在已知影响底栖物种分布的环境因素上的分布:深度、遮阳和离海岸的距离、人工结构的淹没时间等局地特征。研究了从潮间带中部(0 m)到潮下浅层(5 m)的软体动物组合。我们还评估并比较了巴西东北海岸两个港口地区的tulipa(建立)和Isognomon bicolor(入侵)的分布。共发现本地种33种,隐源种7种,NIS种2种。以本地种Crassostrea brasiliana数量最多,其次是NIS I. bicolor和E. tulipa。利用PERMANOVA分析表明,深度梯度、位置和这些固定因子之间的相互作用对人工结构的垂直分布有显著影响。结果表明,最近的底质可用性支持NIS物种的定殖,并且在群落更稳定的地区,这些物种与本地物种共存并受其调节。此外,本研究首次探讨了巴西东北部沿海地区已建立的NIS蜈蚣虫的分布。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Molluscan assemblages on artificial structures: a bioinvasion perspective from Northeast Brazilian ports
As the impact of coastal development impinge on our natural ecosystem, we are increasingly compelled to study the effects of artificial habitats on the distribution and abundance of marine species. In particular, understanding how physical factors can influence distributional patterns of benthic communities along artificial structures built in ports that create possibilities for a variety of non-indigenous species (NIS) occur. This paper aims to compare the distribution of mollusc’s assemblage along environmental factors known to influence the distribution of epibenthic species: depth, shading and locality features such as distance from shore and period of submersion of artificial structures. Molluscan assemblages were examined over a depth gradient extending from middle intertidal (0 m) to shallow subtidal (5 m). We also assessed and compared the distribution of Eualetes tulipa (established) and Isognomon bicolor (invasive) in two port locations at Northeast coast of Brazil. A total of 33 native species, 7 cryptogenic and two NIS were found. The most abundant was a native species, Crassostrea brasiliana , followed by the NIS I. bicolor and E. tulipa, respectively. Using PERMANOVA: depth gradient, locality and interaction between these fixed factors showed significant effects on the vertical distribution along the artificial structures sampled. Results suggest that recent substrata availability supports the colonization of NIS species and that these, in areas with more stable communities, cohabit with and are regulated by native species. Furthermore, this is the first study discussing the distribution of the established NIS vermetid E. tulipa in Northeast Brazilian coast.
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来源期刊
Aquatic Invasions
Aquatic Invasions ECOLOGY-MARINE & FRESHWATER BIOLOGY
CiteScore
4.30
自引率
0.00%
发文量
20
审稿时长
6-12 weeks
期刊介绍: Aquatic Invasions is an open access, peer-reviewed international journal focusing on academic research of biological invasions in both inland and coastal water ecosystems from around the world. It was established in 2006 as initiative of the International Society of Limnology (SIL) Working Group on Aquatic Invasive Species (WGAIS) with start-up funding from the European Commission Sixth Framework Programme for Research and Technological Development Integrated Project ALARM. Aquatic Invasions is an official journal of International Association for Open Knowledge on Invasive Alien Species (INVASIVESNET). Aquatic Invasions provides a forum for professionals involved in research of aquatic non-native species, including a focus on the following: • Patterns of non-native species dispersal, including range extensions with global change • Trends in new introductions and establishment of non-native species • Population dynamics of non-native species • Ecological and evolutionary impacts of non-native species • Behaviour of invasive and associated native species in invaded areas • Prediction of new invasions • Advances in non-native species identification and taxonomy
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