Drill-cored rock pools: an effective method of ecological enhancement on artificial structures
Drill-cored rock pools: an effective method of ecological enhancement on artificial structures
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DOI：
10.1071/mf14244
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发表时间：
2016-01-01
影响因子：
1.8
通讯作者：
Moore, Pippa J.
中科院分区：
文献类型：
--
作者：
Evans, Ally J.;Firth, Louise B.;Moore, Pippa J.
随着预期的气候变化，海岸防御工事正在激增，在其建设中越来越需要具有生态敏感性的设计。通常，这些结构支持的生物多样性低于天然岩石海岸。尽管一些研究已经测试了将新的保水特征纳入海岸防御的生境改善干预措施，但仍然需要额外的长期、完全重复的试验，以确定替代的具有成本效益的设计。我们通过在岸边平行的潮间带花岗岩防波堤上钻取岩芯，创建了两个深度(12厘米，5厘米)的人造岩石池，以调查它们作为干预措施实现生态改善的潜力。18个月后，人工岩石池支持了比防波堤上邻近的花岗岩岩石表面更丰富的物种，而与附近岩石海岸上的天然岩石池的物种丰富度相似。然而，人工池塘和天然池塘的群落组成有所不同。人工岩石池的深度不影响丰富度或群落结构。尽管新的栖息地不支持与天然岩石池相同的群落，但它们显然为几个物种提供了重要的栖息地，否则在防波堤的中岸高度就没有这些物种。这些发现揭示了钻芯岩层池作为一种负担得起且易于复制的手段在各种海岸防御结构上增强生物多样性的潜力，无论是在设计阶段还是在追溯阶段都是如此。
Coastal defences are proliferating in response to anticipated climate change and there is increasing need for ecologically sensitive design in their construction. Typically, these structures support lower biodiversity than natural rocky shores. Although several studies have tested habitat enhancement interventions that incorporate novel water-retaining features into coastal defences, there remains a need for additional long-term, fully replicated trials to identify alternative cost-effective designs. We created artificial rock pools of two depths (12 cm, 5 cm) by drill-coring into a shore-parallel intertidal granite breakwater, to investigate their potential as an intervention for delivering ecological enhancement. After 18 months the artificial rock pools supported greater species richness than adjacent granite rock surfaces on the breakwater, and similar species richness to natural rock pools on nearby rocky shores. Community composition was, however, different between artificial and natural pools. The depth of artificial rock pools did not affect richness or community structure. Although the novel habitats did not support the same communities as natural rock pools, they clearly provided important habitat for several species that were otherwise absent at mid-shore height on the breakwater. These findings reveal the potential of drill-cored rock pools as an affordable and easily replicated means of enhancing biodiversity on a variety of coastal defence structures, both at the design stage and retrospectively.