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Making seawalls multifunctional: The positive effects of seeded bivalves and habitat structure on species diversity and filtration rates

机译:使海堤多功能:种子双抗体和栖息地结构对物种多样性和过滤率的积极影响

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摘要

The marine environment is being increasingly modified by the construction of artificial structures, the impacts of which may be mitigated through eco-engineering. To date, eco-engineering has predominantly aimed to increase biodiversity, but enhancing other ecological functions is arguably of equal importance for artificial structures. Here, we manipulated complexity through habitat structure (flat, and 2.5 cm, 5 cm deep vertical and 5 cm deep horizontal crevices) and seeding with the native oyster (Saccostrea glomerata, unseeded and seeded) on concrete tiles (0.25 m ? 0.25 m) affixed to seawalls to investigate whether complexity (both orientation and depth of crevices) influences particle removal rates by suspension feeders and colonisation by different functional groups, and whether there are any ecological trade-offs between these functions. After 12 months, complex seeded tiles generally supported a greater abundance of suspension feeding taxa and had higher particle removal rates than flat tiles or unseeded tiles. The richness and diversity of taxa also increased with complexity. The effect of seeding was, however, generally weaker on tiles with complex habitat structure. However, the orientation of habitat complexity and the depth of the crevices did not influence particle removal rates or colonising taxa. Colonisation by non-native taxa was low compared to total taxa richness. We did not detect negative ecological trade-offs between increased particle removal rates and diversity and abundance of key functional groups. Our results suggest that the addition of complexity to marine artificial structures could potentially be used to enhance both biodiversity and particle removal rates. Consequently, complexity should be incorporated into future ecoengineering projects to provide a range of ecological functions in urbanised estuaries.
机译:通过建设人工结构的海洋环境越来越多地修改,可以通过生态工程减轻其影响。迄今为止,生态工程主要旨在提高生物多样性,但增强其他生态功能可谓是对人工结构的同等重要。在这里,我们通过栖息地结构(平坦和2.5厘米,5cm,深垂直和5cm深水平裂缝)操纵复杂性,并在混凝土瓷砖上用天然牡蛎(Saccostrea glomerata,未种植和种子)播种(0.25米?0.25米)贴在海堤上,以研究复杂性(缝隙的方向和深度)是否通过不同官能团的悬浮饲料和定植来影响颗粒去除率,以及这些功能之间是否存在生态折衷。经过12个月后,复杂的种子瓷砖通常支持更大的悬浮喂养捕食率,并且具有比扁平瓷砖或无奈瓷砖更高的颗粒去除率。素食的丰富性和多样性也随着复杂性而增加。然而,播种的效果通常较弱于具有复杂的栖息地结构的瓷砖。然而,栖息地复杂性的方向和裂缝的深度不会影响颗粒去除率或殖民征集。与总出征的丰富性相比,非原生分类群的殖民化较低。我们在增加的粒子去除率和多样性和大量关键官能团之间没有检测到负面生态权衡。我们的结果表明,对海洋人工结构的复杂性可能用于增强生物多样性和颗粒去除率。因此,应将复杂性纳入未来的生态工程项目,以便在城市化河口中提供一系列生态功能。

著录项

  • 来源
    《Marine Environmental Research》 |2021年第3期|105243.1-105243.12|共12页
  • 作者单位

    Sydney Inst Marine Sci Bldg 19 Chowder Bay Rd Mosman NSW 2088 Australia|Macquarie Univ Dept Biol Sci N Ryde NSW 2109 Australia;

    Sydney Inst Marine Sci Bldg 19 Chowder Bay Rd Mosman NSW 2088 Australia|Univ New South Wales Sch Biol Earth & Environm Sci Sydney NSW 2052 Australia;

    Sydney Inst Marine Sci Bldg 19 Chowder Bay Rd Mosman NSW 2088 Australia|Macquarie Univ Dept Biol Sci N Ryde NSW 2109 Australia;

    Sydney Inst Marine Sci Bldg 19 Chowder Bay Rd Mosman NSW 2088 Australia|Macquarie Univ Dept Biol Sci N Ryde NSW 2109 Australia;

    Sydney Inst Marine Sci Bldg 19 Chowder Bay Rd Mosman NSW 2088 Australia|Univ Sydney Sch Life & Environm Sci Sydney NSW 2006 Australia;

    Sydney Inst Marine Sci Bldg 19 Chowder Bay Rd Mosman NSW 2088 Australia|Macquarie Univ Dept Earth & Environm Sci N Ryde NSW 2109 Australia;

    Univ New South Wales Sch Biol Earth & Environm Sci Sydney NSW 2052 Australia;

    Sydney Inst Marine Sci Bldg 19 Chowder Bay Rd Mosman NSW 2088 Australia|Univ New South Wales Sch Biol Earth & Environm Sci Sydney NSW 2052 Australia;

    Sydney Inst Marine Sci Bldg 19 Chowder Bay Rd Mosman NSW 2088 Australia|Univ Tasmania Inst Marine & Antarctic Sci Hobart Tas 7000 Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Filtration; Water quality; Suspension feeder; Primary producer; Oysters; Invasive species; Native species; Ecosystem functioning; Artificial structures; Seawalls;

    机译:过滤;水质;悬浮饲料;初级生产者;牡蛎;侵入性物种;本土物种;生态系统运作;人工结构;海堤;海堤;
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