Ecology ofNothofagus menziesiiin the catlins ecological region, South-east Otago, New Zealand (I) seed production, viability, and dispersal

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Abstract
Production, viability, and dispersal of Nothofagus menziesii seed in the Catlins Ecological Region were measured and found to be similar to records from elsewhere in New Zealand. Seed production was greater at a low (150 m) than a high (450 m) altitude site, but seed soundness was higher at the latter. Sound seed had a germination rate of 80–95%, dropping to 50% after two years storage. Seed was dispersed at least 250 m from the nearest parent plant at both sites, and dispersal was more effective downslope than upslope. The distribution of isolated stands of N. menziesii in the Catlins Ecological Region suggests that seed can be dispersed, probably by wind, up to 6 km from the parent plant.

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