Three variants of ecological niche are described by Schoener, Thomas W. (2009). „§I.1 Ecological niche”. Ур.: Simon A. Levin; Stephen R. Carpenter; H. Charles J. Godfray; Ann P. Kinzig; Michel Loreau; Jonathan B. Losos; Brian Walker; David S. Wilcove. The Princeton Guide to Ecology. Princeton University Press. стр. 3 ff. ISBN9781400833023.
A Townsend Peterson; Soberôn, Jorge; Pearson, RG; Roger P Anderson; Enrique Martínez-Meyer; Nakamura, Miguel; Miguel Bastos Araújo (2011). „Species-environment relationships”. Ecological Niches and Geographic Distributions (MPB-49). Princeton University Press. стр. 82. ISBN9780691136882. See also Chapter 2: Concepts of niches, pp. 7 ff
A Townsend Peterson; Soberôn, Jorge; Pearson, RG; Roger P Anderson; Enrique Martínez-Meyer; Nakamura, Miguel; Miguel Bastos Araújo (2011). „Major themes in niche concepts”. Ecological Niches and Geographic Distributions (MPB-49). Princeton University Press. стр. 11. ISBN9780691136882. „We will make the crucial distinction between variables that are dynamically modified (linked) by the presence of the species versus those that are not. ... [Our construction] is based upon variables not dynamically affected by the species...in contrast to...those that are subject to modification by niche construction.”
Pollock, Michael M.; Naiman, Robert J.; Erickson, Heather E.; Johnston, Carol A.; Pastor, John; Pinay, Gilles (1995). Jones, Clive G.; Lawton, John H., ур. Beaver as Engineers: Influences on Biotic and Abiotic Characteristics of Drainage Basins. Springer. стр. 117—126. ISBN978-1-4613-5714-8. doi:10.1007/978-1-4615-1773-3_12.