@article {6311,
	title = {Ecological divergence exhibis consistently positive associations with reproductive isolation across disparate taxa},
	journal = {Proceedings of the National Academy of Sciences of the United States of America},
	volume = {103},
	number = {9},
	year = {2006},
	note = {PDF},
	pages = {3209-3213},
	keywords = {ecology, evolution, evolutionary theory, speciation},
	author = {Funk, Daniel J. and Nosil, Patrik and Etges, WIlliam J.}
}
