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Ecological succession of benthic organisms on niche-type artificial reefs
Ecological Processes ( IF 4.8 ) Pub Date : 2020-07-21 , DOI: 10.1186/s13717-020-00242-9
María-Isabel Toledo , Pamela Torres , Cristina Díaz , Victor Zamora , Jesús López , Germán Olivares

As part of efforts to restore fishery resources and recover damaged coastal ecosystems, artificial reefs are often anchored on the seafloor in coastal zones, to provide new habitats for marine organisms. The aim of the study was to describe the structure of a community of benthic invertebrates colonising a niche-type artificial reef (AATN in Spanish). Nine structures were anchored at depths of 16 ± 1.5 m for 99 weeks (22 months) in the Area of Benthic Resource Management and Exploitation (AMERB) in coastal waters of the Region of Bio Bio, Chile. The results showed that, at 3 months from submersion of the NTAR, much of the artificial substrate remained bare and there were only low levels of specimens of Balanus sp. barnacles, showing mean coverage of 11.26%, and even lower proportions of Rhodophyta, with mean coverage of 0.34%. At 6 months, the presence of hydrozoans was seen, decreasing the coverage of the barnacles, which was aided further at 8 months with the arrival of barnacle predatory invertebrates. At 8 months, new benthic invertebrates appeared and competed for the substrate. These included sponges and algae. At 99 weeks, the hydrozoans dominated the substrate, followed by barnacles and Rhodophyta, the first colonising organisms, leading to colonisation by motile macro-invertebrates, mainly consisting of crustaceans, echinoderms and molluscs. The AATN artificial system provides an ideal substrate for the development of early ecological succession and the use of this technology should be feasible in the recovery process of habitat damaged by anthropogenic actions and climate change.

中文翻译:

生态位型人工鱼礁底栖生物的生态演替

作为恢复渔业资源和恢复受损的沿海生态系统的努力的一部分,人造礁石通常锚定在沿海地区的海底上,以为海洋生物提供新的栖息地。这项研究的目的是描述在利基型人工礁(西班牙语为AATN)上定居的底栖无脊椎动物群落的结构。在智利比奥比奥地区的沿海水域底栖资源管理和开发区(AMERB)内,九个建筑物在16±1.5 m的深度锚定了99周(22个月)。结果显示,在将NTAR浸入水中三个月后,大部分人造基质仍然裸露,并且Balanus sp。的标本水平很低。藤壶,平均覆盖率为11.26%,甚至更低,平均覆盖率为0.34%。在六个月后 观察到水生动物的存在,减少了藤壶的覆盖范围,随着藤壶掠食性无脊椎动物的到来,在8个月后进一步得到了帮助。在8个月时,出现了新的底栖无脊椎动物,并争夺了底物。这些包括海绵和藻类。在第99周时,水生动物主导了底物,随后是藤壶和红藻,这是最早的定殖生物,导致活动性大型无脊椎动物定居,主要由甲壳类,棘皮动物和软体动物组成。AATN人工系统为早期生态演替的发展提供了理想的基础,在人类活动和气候变化破坏的栖息地的恢复过程中,该技术的使用应该是可行的。随着藤壶掠食性无脊椎动物的到来,在8个月后进一步得到了帮助。在8个月时,出现了新的底栖无脊椎动物,并争夺了底物。这些包括海绵和藻类。在第99周时,水生动物主导了底物,随后是藤壶和红藻,这是最早的定殖生物,导致活动性大型无脊椎动物定居,主要由甲壳类,棘皮动物和软体动物组成。AATN人工系统为早期生态演替的发展提供了理想的基础,在人类活动和气候变化破坏的栖息地的恢复过程中,该技术的使用应该是可行的。随着藤壶掠食性无脊椎动物的到来,在8个月后进一步得到了帮助。在8个月时,出现了新的底栖无脊椎动物,并争夺了底物。这些包括海绵和藻类。在第99周时,水生动物主导了底物,随后是藤壶和红藻,这是最早的定殖生物,导致活动性大型无脊椎动物定居,主要由甲壳类,棘皮动物和软体动物组成。AATN人工系统为早期生态演替的发展提供了理想的基础,在人类活动和气候变化破坏的栖息地的恢复过程中,该技术的使用应该是可行的。这些包括海绵和藻类。在第99周时,水生动物主导了底物,随后是藤壶和红藻,这是最早的定殖生物,导致活动性大型无脊椎动物定居,主要由甲壳类,棘皮动物和软体动物组成。AATN人工系统为早期生态演替的发展提供了理想的基础,在人类活动和气候变化破坏的栖息地的恢复过程中,该技术的使用应该是可行的。这些包括海绵和藻类。在第99周时,水生动物主导了底物,随后是藤壶和红藻,这是最早的定殖生物,导致活动性大型无脊椎动物定居,主要由甲壳类,棘皮动物和软体动物组成。AATN人工系统为早期生态演替的发展提供了理想的基础,在人类活动和气候变化破坏的栖息地的恢复过程中,该技术的使用应该是可行的。
更新日期:2020-07-21
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