Biological diversity is also known as Biodiversity. It can be studied on many levels. At the highest level, you can look at all the different species on the entire Earth. On a much smaller scale, you can study biodiversity within a pond ecosystem or a neighborhood park. Identifying and understanding the relationships between all the life on Earth are some of the greatest challenges in science.
Related Journals of Biodiversity: Fisheries & Aquaculture Journals, Biodiversity and Conservation, Chemistry and Biodiversity, Animal Biodiversity and Conservation, Palaeobiodiversity and Palaeoenvironments, Marine Biodiversity, Systematics and Biodiversity, International Journal of Biodiversity Science, Ecosystems Services and Management