ABSTRACT
Key points mentioned in this book are summarized in this chapter. In essence, biodiversity means the diversity of genes, species, and ecosystems; more precisely, biodiversity is the expression of the diverse “state” of those. Since the Earth Summit in 1992, biodiversity has been attracting global attention to the point where its loss has become one of the most important environmental issues in the world. However, biodiversity conservation is complicated and difficult, because loss of biodiversity is a multi-layered issue caused by various factors at local, national, regional, and global levels, and the countermeasures vary widely from gene preservation to species conservation and protected-area designation.
