Monitoring the sea water intrusion and the impact on the coastal vegetation by means of C and O stable isotope approach - The case study of Castel Volturno (Caserta, Italy) (Contributo in atti di convegno)

Type
Label
  • Monitoring the sea water intrusion and the impact on the coastal vegetation by means of C and O stable isotope approach - The case study of Castel Volturno (Caserta, Italy) (Contributo in atti di convegno) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Alternative label
  • Esposito R. (1), Bertolini T. (2), Di Fiore V (3)., Lauteri M. (1), Punzo M. (3), Sarti M. (1), Scartazza A. (1), Tarallo D. (3), Calfapietra C. (1) (2014)
    Monitoring the sea water intrusion and the impact on the coastal vegetation by means of C and O stable isotope approach - The case study of Castel Volturno (Caserta, Italy)
    in Quinto Simposio "Il Monitoraggio Costiero Mediterraneo: problematiche e tecniche di misura", Livorno, 17-19 giugno 2014
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Esposito R. (1), Bertolini T. (2), Di Fiore V (3)., Lauteri M. (1), Punzo M. (3), Sarti M. (1), Scartazza A. (1), Tarallo D. (3), Calfapietra C. (1) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1Istituto di Biologia Agro-ambientale e Forestale (IBAF), Consiglio Nazionale delle Ricerche. 2Centro Euro-Mediterraneo sui Cambiamenti Climatici (CMCC), Divisione Impatti sull'Agricoltura, Foreste ed Ecosistemi Naturali Terrestri (IAFENT). 3Istituto per l'Ambiente Marino Costiero (IAMC), Consiglio Nazionale delle Ricerche (literal)
Titolo
  • Monitoring the sea water intrusion and the impact on the coastal vegetation by means of C and O stable isotope approach - The case study of Castel Volturno (Caserta, Italy) (literal)
Abstract
  • The coastland surrounding the mouth of Volturno river is a vulnerable environment to both natural disturbances and strong anthropogenic pressure. Particularly, the combined effect of sea level rise and coastal erosion has the potential to enhance the ingression of sea water within the aquifer. Hence, monitoring the sea water intrusion and the vegetation-related responses represents a priority for the sustainable development of the coastal areas. A sampling transect was planned from the coast close to the mouth of the river to the inner part of Castel Volturno municipality. Main aim was to investigate spatial variations of groundwater salinity and physiological responses of the vegetation. For this purpose, well-exposed leaves and small portions of woody twigs of Rubus ulmifolius and Ulmus minor growing along this transect and soil and water table samples were collected for stable isotope analyses. Leaf tissues were used to determine carbon isotope discrimination (?) of photosynthetic products with different turnover rates, such as leaf dry matter and leaf soluble fraction. Xylem and soil water was quantitatively extracted by means of a cryogenic vacuum line to determine oxygen isotope composition (?18O). ? of leaf tissues indicates interspecific and spatial variations in water-use efficiency (WUE), stomatal conductance and photosynthetic performances. An increasing trend of ? was observed for U. minor from the coast to the inner region of Castel Volturno area. The ?18O values of xylem water indicate that U. minor uses a deeper water source than R. ulmifolius. Moreover, the absence of a significant trend in ?18O of xylem water along the transect suggests a rather homogeneous water source for the plants. (literal)
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