Journal
ECOLOGICAL ENGINEERING
Volume 36, Issue 9, Pages 1201-1211Publisher
ELSEVIER
DOI: 10.1016/j.ecoleng.2009.12.007
Keywords
Saltwater intrusion; Pinus pinea; Pinus pinaster; Pine tree; Groundwater; Salinity tolerance; Biodiversity; Species richness; Wetlands; Ravenna; Italy
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In the coastal pine forests (Pinus pinea and Pinus pinaster) of Ravenna (Italy) along the Adriatic coast, many pine trees are stressed or dying. In this paper we present ground elevation, depth to watertable, salinity of groundwater and vegetation species richness data within one of the coastal pine forests and some wetlands north of the Bevano River between LAT. 44 degrees 23'10 and LAT. 44 degrees 20'21 and between LONG. 12 degrees 17'25 and LONG. 12 degrees 19'33. The data are presented areally and along a 50 m long transect perpendicular to the coast to study the cause of distress in the pine forest and in different water pools within the wetlands. The findings were compared to published values of tolerance to salinity for 39 plant species typical of the area and incorporated into a web application to help nature managers in assessing or adjusting water salinity in relation to the vegetation species present. The pine trees are relatively tolerant to salinity (up to 12 g/l) but cannot survive a shallow watertable. On the other hand, species richness or biodiversity in this area is promoted by a shallow watertable and low salinity. (C) 2009 Elsevier B.V. All rights reserved.
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