Histories Of Bioinvasions In The Mediterranean

Histories of Bioinvasions in the Mediterranean

Bioinvasions is a current top research subject for natural sciences, social sciences and humanities and a major concern for conservationists, land managers and planners. In the last decades, new findings, perspectives and practices have revealed the multifaceted challenges of preventing new introductions and dealing with those invasive species that harm natural ecosystems, economy and human welfare. This book brings together environmental historians and natural scientists to share their studies and experiences on the human dimensions of biological invasions from the ancient past to the current challenges. The collection of papers focuses on the Mediterranean region and deals with aquatic and terrestrial ecosystems on the mainland and islands, ranging from marine and freshwater environments to coastal marshlands and forests. A wide diversity of animals and plants are featured, from marine fishes to marine and freshwater crustaceans, invertebrates, reptiles and amphibians, birds and mammals, to grasses, shrubs and trees. This book is a contribution to the scientific debate on how to deal with the historical dimensions of biological invasions, fostering dialogue between cultural and ecological explanations of environmental change, to inform environmental policy and management. It has been organized in three sections: the first is the editors’ introduction, in which they review the existing literature and highlight relevant concepts and ideas; the second is about alien species in the Mediterranean region; the third includes cases from other Mediterranean-type regions.

Biological Invasions in the Mediterranean Sea

Non-indigenous species in the Mediterranean and the Black Sea

Recent decades have seen significant changes in the biota of the Mediterranean and the Black Sea due to the introduction of non-indigenous species. Reliable scientific data on the dynamics of their distribution and abundance are essential to understand their ecological and economic effects. This review – in addition to providing images and descriptions of relevant species to aid in identification – presents a unique historical and regional perspective on these species’ impacts, based on many years’ worth of research. The Black Sea’s primary invaders come from the Mediterranean. Species like the comb jelly Mnemiopsis leidyi have caused major declines in biodiversity in the region by crippling key segments of the food chain. Similar results have been noted in the Marmara Sea, a crucial water exchange point located between the Aegean Sea and the Black Sea. Infiltration into the Mediterranean comes from both the east and west – with Lessepsian species passing through the Suez Canal and fish and invertebrate species originating from the Atlantic expanding their ranges. As of the publication of this review, over 900 non-indigenous species have been reported in the Mediterranean and almost 300 in the Black Sea, with these numbers expected to rise in the future. Numerous Lessepsian fishes are commercially relevant and have been absorbed into local markets, particularly in the eastern Mediterranean region. While these species are targeted through various fishing techniques, many others are simply discarded due to a lack of value and there are even some, such as lionfishes, pufferfishes and several species of jellyfishes, that present immediate dangers to human health. Stewardship of native species, regional cooperation on the enforcement of legal measures, increased public awareness and the creation of marine protected areas are thus essential to minimize and reduce the impacts of non-indigenous species both in the Mediterranean and the Black Sea.