RT info:eu-repo/semantics/article T1 Biogeographic ranges do not support niche theory in radiating Canary Island plant clades A1 Steinbauer, Manuel J. A1 Field, Richard A1 Fernández-Palacios, José María A1 Irl, Severin D.H. A1 Otto, Rüdiger A1 Schaefer, Hanno A1 Beierkuhnlein, Carl K1 Adaptive radiation K1 Climate K1 Competition K1 Divergence K1 Ecological character displacement K1 Endemic plants K1 Ghost of competition past K1 Niche conservatism K1 Sister clades K1 Speciation AB Ecological niche concepts, in combination with biogeographic history,underlie our understanding of biogeographic ranges. Two pillars of this understandingare competitive displacement and niche conservatism. The competitivedisplacement hypothesis holds that very similar (e.g. closely related) co-occurringspecies should diverge, forced apart by competition. In contrast, according to theniche conservatism hypothesis, closely related species should have similar niches. Ifthese are fundamental structuring forces, they should be detectable when comparingthe climatic niches of endemic species in radiating clades in oceanic archipelagos,where closely related species exist in both sympatry and allopatry and thespecies’ entire ranges are known. We took advantage of this natural experimentalsystem to test whether the climatic niche relationships predicted by the two hypothesesare found. PB Wiley SN 1466-822X YR 2016 FD 2016 LK http://riull.ull.es/xmlui/handle/915/16761 UL http://riull.ull.es/xmlui/handle/915/16761 LA en DS Repositorio institucional de la Universidad de La Laguna RD 21-nov-2024