Hawaii's Native Plants

Book excerpt: The Hawaiian Islands are the most isolated archipelago on Earth. The chance arrival of plants and animals to these rich volcanic islands resulted in the evolution of a host of unique speciesalmost 90 percent of the plants native to this island chain do not occur anywhere else in the world. But the Hawaiian Islands were not to remain as they were. They were discovered by humans, and with the settlers came other invaders. Native species, which had evolved with few natural enemies, had little or no protection. The invasion had begun. The losses suffered have been huge, and until recently, few understood how much was being lost as these biological riches vanished from the Pacific Basin. Focusing on plants endemic to the Hawaiian Islands, Hawaii's Native Plants also includes a sampling of species that occur elsewhere in the Pacific Basin, as well as those brought by early settlers, and other alien species. Dr. Bohm begins with the basic questions island biologists ask: Where is everything? How did it all get here? When did it all happen? The reader will also learn of the islands' fascinating geological history and the development of its native flowering plants and ferns, and the pests that have wreaked or threatened havoc on island biodiversity and others whose impact remains to be seen. The concept of endemism, or "nativeness," is also discussed. The scope of the discussion is invaluable in answering the question of what can we do now to protect what remains of Hawaii's priceless natural heritage.