New Zealand’s tallest forest tree, the kahikatea (Dacrycarpus dacrydioides), once dominated the forests that covered much of New Zealand’s swampy lowland areas. Far from a solitary tree, the kahikatea groups closely with other kahikatea, intertwining its buttressed roots with its neighbours for support in the unstable swampy ground. (It is perhaps for this reason that the kahikatea has evolved with such a tall, straight trunk with no lower branches, to enable it to “huddle” with others for stability). In autumn, throughout the lowlands of New Zealand, numerous forest birds chattered noisily in its canopy, feeding on its abundant red berries. These berries, called koroī, were also a valued food source for Māori, who skillfully climbed up the smooth branchless trunks to harvest them. Continue reading →