Comparative water relations of co-occurring trees in a mixed podocarp-broadleaf forest

AimsAs extreme climatic events including droughts and heat waves become more common in a changing climate, tree mortality has increased across the globe. In order to determine whether certain species have a competitive advantage over others, we explored the water-relations and leaf-gas exchange of four co-occurring species in a forest in northern Aotearoa-New Zealand. We studied the ecologically and culturally significant foundation species,Agathis australis(a conifer), two additional conifers,Phyllocladus trichomanoidesandPodocarpus totaraand the angiospermKnightia excelsa.