Spatial synchrony of population changes in rocky shore communities in Shetland
Spatial synchrony of population changes in rocky shore communities in Shetland
复制标题
设得兰群岛岩石海岸社区人口变化的空间同步性
DOI：
10.3354/meps240039
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
B. James
中科院分区：
文献类型：
--
作者：
M. Burrows;J. J. Moore;B. James
设得兰群岛 Sullom Voe 石油码头周围的岩石海岸监测产生了 15 至 20 个相距 30 公里的地点的 40 多个物种的 20 年种群波动数据集。种群变化的同步性是通过按定量尺度分类的一系列丰度之间的相关性来量化的。根据监测方法和范围的变化，分别分析了 1992 年之前和之后的两个时期。 1992 年之前 16 个物种中的 10 个和 1992 年之后 26 个物种中的 23 个发现地点之间存在正平均相关性，两个时期分别有 4 个和 8 个物种具有统计显着性。潮间带藤壶 Semibalanus balanoides 在两个时期的位点之间表现出最高的同步性，而狗螺 Nucella lapillus 和大型藻类（墨角藻、F. serratus、Mastocarpus stellatus）在位点之间的平均相关性非常低。 Littorina saxatilis 是唯一在两个时期的地点之间都具有显着正相关性的其他物种。 Corallinaceae、Verrucaria maura 和 V.mucosa 以及 Littorinaignorea 在 1992 年之前的同步性低于 1992 年之后，而 L.obtusata 在 1992 年之后表现出较少的同步性。生殖生物学和生态学的差异无法解释物种之间的同步模式。有浮游幼虫的物种并不比没有浮游幼虫的物种更可能同步化。 1992年后，生活在海岸较高处的物种有一种更加同步的趋势，但主要生活在暴露在波浪中的海岸上的物种并不比庇护海岸上的物种更加同步。本研究中较为同步的物种需要在相对较少的地点进行监测以检测变化，而对于在局部范围内发生变化的物种可能需要更多的地点。种群同步性还表明物种作为大规模变化指标的有用性：藤壶 S. balanoides 是研究区域物种中最好的指标。
Rocky shore monitoring around the Sullom Voe Oil Terminal in Shetland has produced a 20 yr dataset of population fluctuations for 40-plus species at 15 to 20 sites separated by distances up to 30 km. Synchrony in population changes was quantified by correlation among series of abundance categorised on quantitative scales. Two periods were analysed separately, pre- and post-1992, following changes in methods and extent of monitoring. Positive average correlations among sites were found for 10 out of 16 species pre-1992 and for 23 out of 26 post-1992, statistically significant for 4 and 8 species for the 2 periods, respectively. The intertidal barnacle Semibalanus balanoides showed most synchrony among sites for both periods, while dogwhelks Nucella lapillus and macroalgae (Fucus vesiculosus, F. serratus, Mastocarpus stellatus) had very low average correlations among sites. Littorina saxatilis was the only other species with significant positive correlation among sites in both periods. Corallinaceae, Verrucaria maura and V. mucosa, and Littorina neglecta were less synchronised pre-1992 than post-1992, while L. obtusata showed less synchrony post-1992. Differences in reproductive biology and ecology failed to explain patterns of synchrony among species. Species with planktonic larvae were no more likely to be synchronised than those without. There was a tendency for species living higher on the shore to be more synchronised post-1992, but species predominant on wave-exposed shores were no more synchronous than sheltered-shore species. The more synchronised species in this study need to be monitored at relatively few sites to detect change, whereas more sites may be needed for species in which change occurs on a local scale. Population synchrony also suggested usefulness of species as indicators of large-scale change: the barnacle S. balanoides is the best indicator among species in the study area.