The Potential for Created Oyster Shell Reefs as a Sustainable Shoreline Protection Strategy in Louisiana
The Potential for Created Oyster Shell Reefs as a Sustainable Shoreline Protection Strategy in Louisiana
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DOI：
10.1111/j.1526-100x.2005.00062.x
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发表时间：
2005-09
影响因子：
3.2
通讯作者：
Bryan P. Piazza;P. Banks;M. L. La Peyre
中科院分区：
文献类型：
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作者：
Bryan P. Piazza;P. Banks;M. L. La Peyre
海岸保护仍然是全球优先事项。保护和维护海岸线完整性通常是许多海岸保护计划的目标。通常，海岸线是通过用石灰石等坚硬、非本地和不可持续的材料进行防护来保护的。这项研究调查了路易斯安那州边缘侵蚀沼泽海岸线的三维东方牡蛎（Crassostrea virginica）贝壳礁的潜在海岸线保护作用。 2002 年 6 月，在高波能海岸线和低波能海岸线创建了实验珊瑚礁（25 × 1.0 × 0.7 m；潮间带）。 2002 年 6 月，在每条海岸线上建立了 6 个 25 米研究点（3 个人工养殖和 3 个对照非人工养殖），总共 12 个研究点。与对照低能量海岸线相比，培养的低能量海岸线的海岸线后退减少了（方差分析；p < 0.001），但在高能量环境中培养和非培养地点之间没有显着差异。卵数从 2002 年 7 月的 0.5 ± 0.1 卵/壳增加到 2002 年 10 月的峰值 9.5 ± 0.4 卵/壳。在研究期间，牡蛎卵平均以 0.05 毫米/天的速度生长。牡蛎卵的补充和增长率表明随着时间的推移，珊瑚礁具有潜在的可持续性。小型岸礁可能是保护低能量环境中海岸线的有用工具。然而，它们的用途在高能环境中可能受到限制。
Coastal protection remains a global priority. Protection and maintenance of shoreline integrity is often a goal of many coastal protection programs. Typically, shorelines are protected by armoring them with hard, non‐native, and nonsustainable materials such as limestone. This study investigated the potential shoreline protection role of created, three‐dimensional Eastern oyster (Crassostrea virginica) shell reefs fringing eroding marsh shorelines in Louisiana. Experimental reefs (25 × 1.0 × 0.7 m; intertidal) were created in June 2002 at both high and low wave energy shorelines. Six 25‐m study sites (three cultched and three control noncultched) were established at each shoreline in June 2002, for a total of 12 sites. Shoreline retreat was reduced in cultched low‐energy shorelines as compared to the control low‐energy shorelines (analysis of variance; p < 0.001) but was not significantly different between cultched and noncultched sites in high‐energy environments. Spat set increased from 0.5 ± 0.1 spat/shell in July 2002 to a peak of 9.5 ± 0.4 spat/shell in October 2002. On average, oyster spat grew at a rate of 0.05 mm/day through the duration of the study. Recruitment and growth rates of oyster spat suggested potential reef sustainability over time. Small fringing reefs may be a useful tool in protecting shorelines in low‐energy environments. However, their usefulness may be limited in high‐energy environments.