Changes in ecological bioindicator values during the period 1993–2017 at the Gran Sasso d’Italia LTER site (Luzulo-Festucetum plots) (a): light availability; b): thermophile behaviour; c): continentality gradient; d): pH gradient; e): nitrogen availability; f): soil moisture) (*: regression performed using non-parametric linear regression analysis; ns: non-significant).

 
 
  Part of: Petriccione B, Bricca A (2019) Thirty years of ecological research at the Gran Sasso d’Italia LTER site: climate change in action. In: Mazzocchi MG, Capotondi L, Freppaz M, Lugliè A, Campanaro A (Eds) Italian Long-Term Ecological Research for understanding ecosystem diversity and functioning. Case studies from aquatic, terrestrial and transitional domains. Nature Conservation 34: 9-39. https://doi.org/10.3897/natureconservation.34.30218