Soil salinity (g/l) at two habitats (R = rocky; D = sandy); three sites per habitat (R1 = Coscia di Donna; R2 = La Frana; R3 = Cala Barca; D1 = Li Junchi; D2 = Platamona; D3 = Porto Ferro) and three belts per site (Belt 1 = 0-50 m from the sea; Belt 2 = 51-100 m; Belt 3 = 101-150 m), sampled at three times in 2013 (T1 = April; T2 = August; T3 = December). A total of 10 measurements were taken at each combination Time × Habitat × Site × Belt.

1Classification of soil salinity according to U.S. Salinity Laboratory Staff 1954: low= < 0.2 [salt concentration (g/l)] and < 0.25 [electrical conductivity (dS/m)]; medium= 0.2-0.5 [salt concentration (g/l)] and 0.25-0.75 [electrical conductivity (dS/m)]; high=0.5-1.5 [salt concentration (g/l)] and 0.75-2.25 [electrical conductivity (dS/m)]; very high= 1.5-3.0 [salt concentration (g/l)] and 2.25-5.50 [electrical conductivity (dS/m)].

 
  Part of: Maccioni A, Canopoli L, Cubeddu V, Cucca E, Dessena S, Morittu S, Filigheddu R, Padedda BM, Farris E (2021) Gradients of salinity and plant community richness and diversity in two different Mediterranean coastal ecosystems in NW Sardinia. Biodiversity Data Journal 9: e71247. https://doi.org/10.3897/BDJ.9.e71247