Department of Biology and Evolution, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy.
Mar Pollut Bull. 2011 Aug;62(8):1641-51. doi: 10.1016/j.marpolbul.2011.06.012. Epub 2011 Jun 30.
The Adriatic coast of Punta Marina (Ravenna) is protected by 3-km long low crested breakwater structures (LCSs). Through a 3-years long multidisciplinar study, we assessed the impact of such defensive structures on environmental and biological condition. LCSs create pools where conditions are very different from the surrounding nearshore system. Mechanical disturbance by currents and waves varied greatly in intensity and frequency between seaward and landward sides of the structures. Sedimentary budget was positive at the landward side, but it was due to a gain on the seafloor and not on the emerged beach. The budget at seaward was negative. LCSs determine differences in benthic assemblages, alter the seasonal pattern of communities, and modify seasonal fluctuations of animal assemblages. Landward sheltered areas can be seen as "lagoonal island" surrounded by a "sea of marine habitat". Differences in ecological quality status, obtained through M-AMBI, are due to the sum of these factors.
庞塔马里纳（拉文纳）的亚得里亚海沿岸由 3 公里长的低堤防波堤结构（LCS）保护。通过一项为期 3 年的多学科研究，我们评估了这些防御性结构对环境和生物状况的影响。LCS 形成了水池，其条件与周围近岸系统有很大不同。水流和波浪的机械干扰在结构的海侧和陆侧之间的强度和频率上有很大差异。陆侧的沉积预算为正，但这是由于海底的增加，而不是露出海面的海滩的增加。海侧的预算为负。LCS 决定了底栖生物群的差异，改变了群落的季节性模式，并改变了动物群的季节性波动。避风的陆侧区域可以被视为“泻湖岛”，被“海洋生境之海”环绕。通过 M-AMBI 获得的生态质量状况差异是由于这些因素的总和造成的。
