Vielen Dank Jürgen! That totally did the trick. lyx now processes everything correctly with biber. Still my problem is the output. no matter what style I choose, the citation in text always includes the names outside brackets. So using style=authortitle I get ...make up as much as 44% of the land surface Verstraete and Schwartz(1991) and using style=numeric I get: ...make up as much as 44% of the land surface Verstraete and Schwartz[1]
instead of ...make up as much as 44% of the land surface (Verstraete and Schwartz 1991) or ...make up as much as 44% of the land surface [1] Any ideas how to solve that Thanks again, Roey