Adrian´s thesis centered on two neglected mechanisms relating to adaptation: (i) selection acting on biological invaders already prior to their introduction in a novel range (pre-establishment filters ), and (ii) Matching Habitat Choice which we studied in grasshoppers coping with variation in the colours of the soils they utilise, including novel, urban substrates. He himself adapted well to these challenging topics, and has successfully defended his PhD thesis. (Evaluated as Sobresaliente Cum Laude, funded by four-year contract, Spanish Ministry of Economy and Competitiveness). (Co-director: Dr. José Luis Tella, EBD-CSIC)

Adrian stayed for six more months to write up his PhD results (funded by Spanish Ministry of Economy and Competitiveness).