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首页> 外文期刊>Marine ecology progress series >Intercontinental test of generality for spatial patterns among diverse molluscan assemblages in coralline algal turf
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Intercontinental test of generality for spatial patterns among diverse molluscan assemblages in coralline algal turf

机译：洲际测试的珊瑚藻草皮中不同软体动物组合的空间格局

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The potential generality of local processes in determining spatial patterns of molluscan assemblages in turfs of Corallina officinalis is evaluated by testing hypotheses about consistency in ecological pattern on shores in Australia, Ireland and Chile. Identical sampling protocols on 2 shores in each country were used to test 2 specific hypotheses: (1) that molluscan assemblages vary significantly among patches of turf separated by tens of meters, and (2) that these assemblages differ significantly between low- and mid-shore areas. In total, 58, 24 and 27 species of molluscs were found in samples from Australia, Ireland and Chile, respectively. There was a remarkable degree of congruence in the proportion of species that were represented in broad taxonomic groups, with proso-branch gastropods accounting for 52 to 79 % of the total diversity at each locality. As predicted, there was significant variation in diversity and abundance of molluscs among patches of turf separated by tens of meters on each of the shores sampled. There was, however, little consistency in the structure of molluscan assemblages at different tidal heights, with significant differences on Australian shores, weak differences on Irish shores and no clear pattern on Chilean shores. Moreover, while the richness of species and abundance of prosobranchs was significantly greater in low-shore areas in Australia and Chile, the opposite trend was found in Ireland. Overall, the results show the potential for generality of factors that have previously been demonstrated to cause patchiness in molluscan assemblages in coralline turf at scales of tens of meters. It is proposed that testing for consistency in ecological patterns can be a useful and cost-effective first step in establishing the general importance of ecological processes.
机译：通过测试有关澳大利亚，爱尔兰和智利沿岸生态格局一致性的假设，评估了确定Corallina officinalis草坪中软体动物组合空间格局的局部过程的潜在普遍性。每个国家/地区在两个海岸上采用相同的采样协议来检验2个特定假设：（1）软体动物的组装在相距数十米的草皮中差异显着，（2）这些组装在中低端之间显着不同。沿海地区。在澳大利亚，爱尔兰和智利的样品中总共发现了58、24和27种软体动物。在广泛的生物分类群中所代表的物种比例具有显着的一致性，亲支腹足纲动物占每个地方总多样性的52％至79％。正如预测的那样，在每个被采样的海岸上，被数十米分开的草皮之间，软体动物的多样性和丰度存在显着变化。但是，在不同的潮高下，软体动物组合的结构几乎没有一致性，在澳大利亚海岸上差异很大，在爱尔兰海岸上差异很小，而在智利海岸上则没有清晰的图案。此外，尽管澳大利亚和智利的近岸地区物种丰富度和亲支的丰富度大大提高，但爱尔兰却发现了相反的趋势。总体而言，结果表明，先前已被证明会导致数十米尺度珊瑚线草的软体动物组合出现斑片的因素可能具有普遍性。建议在建立生态过程的总体重要性时，对生态格局的一致性进行测试可能是有用且具有成本效益的第一步。

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