Leathwick (2002): Intra-generic competition among Nothofagus in New Zealandís primary indigenous forests.

Leathwick, J. R. 2002. Intra-generic competition among Nothofagus in New Zealandís primary indigenous forests. Biodiversity and Conservation 11: 2177–2187.

This paper extends the analysis described in Leathwick & Austin (2001) by considering competitive interactions within the genus Nothofagus. Species responses to environment were first assessed using multiple regressions, to which were added terms to assess changes in both overall abundance and species responses to annual temperature with increasing numbers of congeners. Results indicate that variation in abundance along the annual temperature gradient is strongly influenced by the competitive context provided by the remaining congeners. Red and silver beech also appear to behave in a mutualistic fashion, reaching greater abundance when growing together than when growing with other species.