Mangrove Tannin: What is it?
In January, our second-year J.A.M.I.N. students were tasked with collecting a variety of growth measurements from the mangrove trees that they tagged and identified inside their quadrats. Before we started, I wanted to review the characteristics that are unique to each species of mangroves, a skill they learned previously during the first year of the program. I decided to quiz the students instead. “How can we identify the red mangrove?” I asked. The replies came quickly. “Prop and drop roots.” “Pointy, thick leaves.” “Green bean-like propagules.” All correct. But among the flurry of eager replies, one stood out as several students shouted in unison. “Red tannin!”