Andromède Océanologie, Saturargues, France.
Mar Pollut Bull. 2011 Feb;62(2):284-92. doi: 10.1016/j.marpolbul.2010.10.012. Epub 2010 Nov 20.
Posidonia oceanica is an endemic seagrass from the Mediterranean Sea. It is an indicator of water quality and of the ecological state of coastal ecosystems. The aim of this paper is to test acoustic telemetry for monitoring the position of P. oceanica meadow limits with varied types. After evaluating the accuracy of the system, we present results from a spatiotemporal survey of P. oceanica meadows on nine sites located on the French coast. The method has been demonstrated to be highly efficient for high precision underwater mapping regardless of meadow type, with 1 cm accuracy for a distance of 40 m between the base and the pointer. A temporal survey led at Cerbere-Banyuls shows a weak global progression of 4 m² (progression of 26 m² - regression of 22 m²) between 2006 and 2010. Finally, we discuss the cost and efficiency of this method, and wether it should be generalized for further studies.
波西多尼亚海草是地中海特有的海草。它是水质和沿海生态系统生态状况的指标。本文的目的是测试声学遥测技术，以监测具有不同类型的波西多尼亚海草草甸的位置。在评估系统的准确性后，我们展示了对法国海岸九个地点的波西多尼亚海草草甸的时空调查结果。该方法已被证明在高精度水下测绘方面非常有效，无论草甸类型如何，在基准和指针之间的 40 米距离内，精度可达 1 厘米。在塞伯尔-巴纽尔斯进行的时间调查显示，2006 年至 2010 年间，整体呈微弱的 4 平方米（增长 26 平方米，减少 22 平方米）趋势。最后，我们讨论了这种方法的成本和效率，以及是否应该将其推广用于进一步的研究。
