Borghetto d'Arroscia, Italy
Borghetto d'Arroscia, Italy

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Rovere A.,Lamont Doherty Earth Observatory | Rovere A.,University of Bremen | Casella E.,University of Genoa | Casella E.,SEAMap ltd | And 6 more authors.
Journal of Maps | Year: 2015

In this paper, we present a map describing the main geomorphological features of the coastal and marine area between the towns of Albenga and Savona (Ligurian Sea, NW Mediterranean) corresponding to a coastal stretch of ∼40 km. To produce this map, we collated data from the literature, orthophotos, perspective photos, multibeam and side scan sonar data, and undertook direct surveys to ground truth data obtained using indirect techniques. We divided the information into nine thematic layers, including bathymetry, natural coastal types, geomorphological elements, seafloor coverage (both geological and biological), coastal and nearshore dynamics, human influence on coastal and marine environments, coastal occupation and protected areas. © 2014, © 2014 A. Rovere.

Vacchi M.,Aix - Marseille University | Vacchi M.,SEAMap Ltd | Montefalcone M.,University of Genoa | Parravicini V.,French National Center for Scientific Research | And 7 more authors.
Mediterranean Marine Science | Year: 2014

Spatial modelling is an emerging approach to the management of coastal marine habitats, as it helps understanding and predicting the results of global change. This paper reviews critically two recent examples developed in Liguria, an administrative region of NW Italy. The first example, aiming at predicting habitat status depending on human pressures (i.e. anthropogenic activities capable of producing impact), provides managers with the opportunity of envisaging different scenarios for the consequences of coastal development choices. The second example defines the status of an important Mediterranean coastal marine habitat (Posidonia oceanica meadows) under natural conditions, allowing quantification of human impact on regressed meadows. Both modelling approaches are useful to define the targets of coastal management and, combined with information on cost of conservation (or management), actions can provide guidance to decision-making. Well-planned and sustained monitoring is essential for model validation and improvement.

Vacchi M.,Aix - Marseille University | Vacchi M.,SEAMap Ltd. | Montefalcone M.,University of Genoa | Schiaffino C.F.,University of Genoa | And 6 more authors.
Marine Pollution Bulletin | Year: 2014

The upper portion of the meadows of the protected Mediterranean seagrass Posidonia oceanica occurs in the region of the seafloor mostly affected by surf-related effects. Evaluation of its status is part of monitoring programs, but proper conclusions are difficult to draw due to the lack of definite reference conditions. Comparing the position of the meadow upper limit with the beach morphodynamics (i.e. the distinctive type of beach produced by topography and wave climate) provided evidence that the natural landwards extension of meadows can be predicted. An innovative model was therefore developed in order to locate the region of the seafloor where the meadow upper limit should lie in natural conditions (i.e. those governed only by hydrodynamics, in absence of significant anthropogenic impact). This predictive model was validated in additional sites, which showed perfect agreement between predictions and observations. This makes the model a valuable tool for coastal management. © 2013 Elsevier Ltd.

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