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首页> 外文期刊>Marine ecology progress series >Context-dependent interaction between an intertidal sponge and a green macroalga in a variable temperate Patagonian bay
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Context-dependent interaction between an intertidal sponge and a green macroalga in a variable temperate Patagonian bay

机译：可变温带巴塔哥尼亚湾潮间带海绵和绿色大型藻类之间的背景相关相互作用

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摘要

The stress gradient hypothesis states that positive interactions become more important as physical stress increases. Organisms living in Patagonian intertidal ecosystems are subjected to high desiccation stress due to elevated temperatures and strong winds. In coastal environments, sponges and macroalgae are common benthic organisms, and they occur from the subtidal to intertidal zones. As human pressure has increased in these systems, both sponges and macroalgae have become more abundant, which has led to more frequent interactions between them. To evaluate the interaction between Hymeniacidon perlevis and Ulva lactuca in 2 contrasting environments, we sampled their abundance and conducted field factorial experiments consisting of sponge transplants and manipulation of algal presence. Our results show that in harsher environments, U.lactuca facilitates H.perlevis likely through the reduction of direct solar radiation or high substrate temperature beneath its canopy, whereas in milder environments, U.lactuca negatively affects H. perlevis throughout other physical or chemical mechanisms (e.g. abrasion, feeding interference through changing current dynamics, depletion of oxygen, allelochemical compound production).
机译：应力梯度假设指出，随着物理压力的增加，正向相互作用变得越来越重要。生活在巴塔哥尼亚潮间带生态系统中的生物由于高温和强风而遭受高度的干燥压力。在沿海环境中，海绵和大型藻类是常见的底栖生物，它们发生在潮下带到潮间带。随着这些系统中人类压力的增加，海绵和大型藻类都变得越来越丰富，这导致它们之间更频繁的相互作用。为了评估在两个相反的环境中，Hymeniacidon perlevis和Ulva lactuca之间的相互作用，我们采样了它们的丰度，并进行了包括海绵移植和操纵藻类存在在内的现场因子实验。我们的结果表明，在更恶劣的环境中，乳杆菌可能通过减少太阳直射辐射或降低其冠层下的较高底物温度来促进百日咳杆菌，而在较温和的环境中，乳酸杆菌会在其他物理或化学机制中对百日咳杆菌产生负面影响（例如，磨损，通过改变电流动态而引起的进料干扰，氧气的消耗，化感化合物的产生）。

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  • 来源
    《Marine ecology progress series》 |2017年第13期|21-32|共12页
  • 作者

    Gastaldi Marianela; Nahuel Firstater Fausto; Andrea Narvarte Maite; Daleo Pedro;

  • 作者单位

    Consejo Nacl Invest Cient & Tecn, Av Rivadavia 1917, Buenos Aires, Argentina|Univ Nacl Comahue, Escuela Super Ciencias Marinas, Guemes 1030, RA-8520 San Antonio Oeste, Rio Negro, Argentina;

    Consejo Nacl Invest Cient & Tecn, Av Rivadavia 1917, Buenos Aires, Argentina|Univ Nacl Comahue, Escuela Super Ciencias Marinas, Guemes 1030, RA-8520 San Antonio Oeste, Rio Negro, Argentina;

    Consejo Nacl Invest Cient & Tecn, Av Rivadavia 1917, Buenos Aires, Argentina|Univ Nacl Comahue, Escuela Super Ciencias Marinas, Guemes 1030, RA-8520 San Antonio Oeste, Rio Negro, Argentina;

    Consejo Nacl Invest Cient & Tecn, Av Rivadavia 1917, Buenos Aires, Argentina|UNMdP, IIMYC, CONICET, Dean Funes 3350, RA-7600 Mar Del Plata, Argentina;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Stress gradient hypothesis; Hymeniacidon perlevis; Ulva lactuca; Intertidal; Shallow subtidal; Temperate Patagonia;

    机译：应力梯度假说;百日草酸;Ulva lactuca;潮间带;浅潮下带;温带巴塔哥尼亚;

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