What determines trophic niche breadth? A global analysis of freshwater fishes using isospaces

Friedrich Wolfgang Keppeler; Tommaso Giarrizzo; Carmen G. Montaña; Alphonse Adite; Şenol Akın; Ronaldo Angelini; Caroline C. Arantes; Evanilde Benedito; Thethela Bokhutlo; Rana El-Sabaawi; Alexandre Garcia; Ivan Gonzalez-Bergonzoni; David Hoeinghaus; Joel Hoffman; Olaf P. Jensen; Erik Jeppesen; R. Keller Kopf; Craig A. Layman; Edwin Orlando Lopez; Bryan M. Maitland; Shin-ichiro S. Matsuzaki; Jill A. Olin; Gordon Paterson; Yasmin Quintana; Carlos Eduardo de Rezende; Ashley Trudeau; Paulo A. Trindade; Thomas F. Turner; Eugenia Zandona; Kirk O. Winemiller