[1] Univ Gottingen, Dept Crop Sci, D-37077 Gottingen, Germany
[2] Univ Gottingen, Inst Geog, Cartog Geog Informat Syst & Remote Sensing Dept, D-37077 Gottingen, Germany
[3] Univ Gottingen, Inst Plant Pathol & Plant Protect, D-37077 Gottingen, Germany
[4] Univ Gottingen, Dept Agr Econ & Rural Dev, D-37073 Gottingen, Germany
[5] Univ Zurich, Inst Systemat Bot, CH-8008 Zurich, Switzerland
[6] Univ Adelaide, Inst Environm, Adelaide, SA 5005, Australia
[7] Univ Adelaide, Sch Earth & Environm Sci, Adelaide, SA 5005, Australia
[8] Natl Univ Singapore, Dept Biol Sci, Singapore 117543, Singapore
[9] Univ Tadulako, Fac Agr, Palu, Cent Sulawesi, Indonesia
[10] Indonesian Nat Conservat Fdn Wildlife Trust Allia, Peka Indonesia Fdn, Bogor 16680, W Java, Indonesia
[11] Bogor Agr Univ, Dept Plant Protect, Bogor 16680, W Java, Indonesia
[12] Univ Paris 06, F-75005 Paris, France
[13] Ecole Normale Super, Dept Biol, F-75230 Paris, France
[14] Celebes Bird Club, Palu, Cent Sulawesi, Indonesia
[15] Tadulako Univ, Herbarium Celebense, Palu 94118, Cent Sulawesi, Indonesia
[16] Univ Vienna, Fac Ctr Biodivers, Dept Populat Ecol, A-1030 Vienna, Austria
[17] Univ Wurzburg, Dept Anim Ecol & Trop Biol Zool 3, Biozentrum, D-97074 Wurzburg, Germany