She has taken microscopic pictures of wood structures and studies how trees’ structure responses to water availability. She has used a scanning electron microscope to measure the tiny pits (visible in the picture for different species) that connect the pipe-like wood structures that transport water inside roots, stems and branches of trees. These pits and their characteristics are important as the pits protect the water transport system from disturbances, but also creates resistance for the water flow. We need to learn more of how these pit structures respond to changes in water availability.
During the winter 2020-2021, Magdalena Held has been analyzing the wood anatomy of birch, spruce and pine trees.