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首页> 外文会议>Nagisa World Congress; 20061015-18; Kobe(JP) >A Review of the Intertidal Rocky Shore Community at Mar del Plata (Argentina) Characterized by the Mussel Brachidontes rodriguezii (d' Orbigny, 1846)
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A Review of the Intertidal Rocky Shore Community at Mar del Plata (Argentina) Characterized by the Mussel Brachidontes rodriguezii (d' Orbigny, 1846)

机译：贻贝Brachidontes rodriguezii（d'Orbigny，1846年）描绘的马德普拉塔（阿根廷）潮间带岩岸群落回顾

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In the rocky shores of Mar del Plata (38°W 04'S), intertidal mussels monopolize the macrofauna communities developing beds dominated by the small mytilid Brachidontes rodriguezii. This species covers 45% to 65% of the mid and upper mid intertidal substrate forming stratified beds. Vertical protected substrates of the midlittoral show the highest densities of B. rodriguezii, up to 175,000 indiv. M~2 representing a dry biomass of 1,670 g. m~2; upper horizontal substrates at the same level show lower densities (80,000 indiv. M~2; 592 g. m~2). The horizontal bed matrix accumulates more sand than vertical beds (19.1kg. Nv~2 and 5.1kg. M~2, respectively). Twenty-six taxa and 14 animal species were recorded within the B. rodriguezii intertidal matrix while a total of 9 algae species were found living on the mussel bed. The pulmonate limpet Siphonaria lessoni is the main intertidal herbivore. The invasive barnacle species, Balanus glandula, was first detected in Mar del Plata in 1974 and today creates an upper midlittoral fringe at densities up to 5,000 indiv.m~2. This review of the Mar del Plata rocky shore community summarizes the existing information as we prepare to sample this area with the NaGISA protocols. The uniqueness of the rocky intertidal of Mar del Plata is the absolute dominance of a single mussel species Brachidontes rodriguezii in the midlittoral, the presence of a sole species of Gastropoda, the grazer pulmonate Siphonaria lessoni and the absence, until the mid sixties, of a barnacle belt.
机译：在马德普拉塔（38°W 04'S）的多岩石的海岸上，潮间带的贻贝垄断了大型动物群落，形成了由小型无脊椎动物Brachidontes rodriguezii主导的河床。该物种覆盖了潮间带中层和上层中层基质的45％至65％，形成了分层床。滨海中部的垂直保护底物表现出最高的B. rodriguezii密度，最高可达175,000个个体。 M〜2代表1,670 g的干燥生物量。 m〜2;相同水平的上水平基板显示出较低的密度（80,000个单独的M〜2； 592 g。m〜2）。水平床基质比垂直床堆积更多的沙子（分别为19.1kg。Nv〜2和5.1kg。M〜2）。在罗氏沼虾的潮间带基质中记录了26种分类单元和14种动物，而在贻贝床上发现了总共9种藻类。肺门Siphonaria lessoni是主要的潮间草食草动物。入侵性藤壶物种Balanus glandula于1974年在马德普拉塔（Mar del Plata）首次被发现，如今在密度高达5,000 inm.m〜2的地方形成了一个沿岸中部上缘。这份对马德普拉塔多岩石海岸社区的评论总结了我们准备使用NaGISA协议对该区域进行采样时的现有信息。马德普拉塔的岩石潮间带的独特性是：滨海中部的一个贻贝物种Brachidontes rodriguezii绝对占主导地位，仅一种腹足纲的腹足类，食草者肺吸虫Siphonaria lessoni和直到60年代中期都没有藤壶带。

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