Messages from Islands: A Global Biodiversity Tour

From a small island in the Baltic Sea to the large tropical islands of Borneo and Madagascar,Messages from Islands is a global tour of these natural, water-bound laboratories. In this career-spanning work, Ilkka Hanski draws upon the many islands on which he has performed field work to convey key themes in ecology. By exploring the islands’ biodiversity as an introduction to general issues, Hanski helps us to learn how species and communities interact in fragmented landscapes, how evolution generates biodiversity, and how this biodiversity is maintained over time.Beginning each chapter on a particular island, Hanski dives into reflections on his own field studies before going on to pursue a variety of ecological questions, including: What is the biodiversity crisis? What are extinction thresholds and extinction debts? What can the biodiversity hypothesis tell us about rapidly increasing allergies, asthma, and other chronic inflammatory disorders? The world’s largest island, Greenland, for instance, is the starting point for a journey into the benefits that humankind acquires from biodiversity, including the staggering biodiversity of microbes in the ecosystems that are closest to us—the ecosystems in our guts, in our respiratory tracts, and under our skin. Conceptually oriented but grounded in an adventurous personal narrative,Messages from Islands is a landmark work that lifts the natural mysteries of islands from the sea, bringing to light the thrilling complexities and connections of ecosystems worldwide.
Messages from Islands is a synthetic tour of the world of biodiversity species and their communitiesand the habitats in which they live. It looks at how biodiversity is generated in the course of evolution and how is it maintained over time. The itinerary of the tour is question based. What is causing the current biodiversity crisis’? What is extinction threshold and what is extinction debt? What is the biodiversity hypothesis about rapidly increasing allergies, asthma, and other chronic inflammatory disorders? What is the third-of-third rule, and could it be the solution to habitat conservation? Each chapter begins on an island, with reflections of his own studies and observations about biodiversity on islands, from a small islet in the Baltic Sea to the large tropical islands of Borneo and Madagascar to Greenland, the world’s largest island. And then steeped in those locations he leads readers on tours of different themes in biodiversity research. Greenland, for example, is a starting point for the world of microbes, and how scientists are coming to understand their staggering biodiversity and how it impacts ecosystems, including the one that lives within our own guts. The result is a conceptually oriented narrative of research on biodiversity, infused with personal anecdotes to convey the excitement of doing aforementioned research. The book is an important introduction to current themes in ecological research to students, and is a highly engaging read for specialists, many of whom in ecology have been influenced by Mr. Hanski’s work.