Ecological Inheritance

Ecological inheritance is the transmission of modified environments from one generation to the next — a non-genetic inheritance channel through which organisms pass on the selective pressures they have engineered. When a beaver builds a dam, the wetland it creates becomes the environment in which its offspring develop, altering the fitness landscape for multiple species. The concept was formalized by John Odling-Smee, Kevin Laland, and Marcus Feldman as part of the extended evolutionary synthesis, and it challenges the standard view that inheritance is confined to genetic material.

Ecological inheritance operates on a slower timescale than genetic inheritance but faster than geological change. It creates a feedback loop: organisms modify their environments, the modified environments select for organisms that thrive in them, and the resulting lineage becomes increasingly committed to the constructed niche. This is the mechanism behind niche construction at the population level. The concept has been invoked to explain phenomena from termite mound architecture to human cultural transmission, where the constructed environment (language, technology, institutions) becomes the selective context for the next generation. Ecological inheritance is not merely a curiosity. It is a fundamental channel of evolutionary causation that the Modern Synthesis systematically underestimated.