[1] Netherlands Inst Ecol, Dept Microbial Ecol, NL-6708 PB Wageningen, Netherlands
[2] Leiden Univ, Inst Biol, NL-2333 BE Leiden, Netherlands
[3] Natl Lab Hlth Environm & Food, Dept Microbiol Res, Maribor 2000, Slovenia
[4] Univ San Francisco Quito, Colegio Ciencias Biol & Ambientales, Quito 170901, Ecuador
[5] Univ San Francisco Quito, Colegio Ciencias Biol & Ambientales, Inst Microbiol, Quito 170901, Ecuador