Dépérissement du pin maritime (Pinus pinaster Aït) en Vendée. Les causes écologiques

The impact of sea erosion on coastal Pinus pinea stands: A diachronic analysis combining tree-rings and ecological markers

“…Water table salinisation has been found to be a major determinant of pine forest decline as a result of sea-level rise (Ross et al, 1994), and salt intrusion into the water table has been suspected to be the cause of the dieback of maritime pine stands in the France coastal range (Guyon, 1991). NaCl toxicity reduces shoot growth by suppressing leaf initiation and expansion, and by accelerating leaf abscission (Kozlowski, 2000).…”

Growth and uptake of mineral elements in response to sodium chloride of three provenances of maritime pine1

“…The effect of salinity on forest die-back has been observed in the Atlantic littoral dunes in the centre of France on calcareous sands that range in pH = 8.6 to 9 (Guyon, 1991). The spring intrusions of a salinized water table was believed to be responsible for die-back of maritime pine (Pinus pinaster Ait.)…”

“…over an area of 21,000 ha in "Vendee" and "Pays de Loire" coastal range (45 to 48 degrees North). Two geographic provenances of maritime pine, the native "Landais" provenance, and the "Iberique" provenance which originated from Spain and Portugal and is used abundantly for reforestation (Guyon, 1991), coexist in the same area and respond differently in the intensity to forest die-back.…”

Growth and water relations of three geographically separate origins of maritime pine (Pinus pinaster) under saline conditions

“…Intrusions of a salinized water table during spring are suspected to be the cause of pine forest dieback in the Vendée and Pays de Loire coastal range (Guyon 1991). The major tree species in this region is maritime pine (Pinus pinaster Ait.)…”