**Blue Economy: Horizons and Challenges in a Changing Climate** **Dr. Emmanuel PARLIER** The blue economy is a sustainable development model that aims to reconcile the exploitation of aquatic resources with the preservation of ecosystems. In his book, Dr. Emmanuel Parlier sheds light on the major issues affecting marine and freshwater environments, which are heavily impacted by climate change and human activities. The author begins by defining the blue economy, distinguishing it from the green and traditional economies. He emphasizes its importance in ensuring a balance between economic development and the conservation of aquatic environments. He explores key concepts of aquatic ecology, such as the water cycle, ocean currents, and their role in climate regulation. The book then analyzes the fundamental principles of this approach: environmental sustainability, social justice, innovation, and resilience. It highlights the ecosystem services provided by oceans and continental aquatic environments while detailing the threats these ecosystems face (pollution, ocean acidification, rising sea levels, biodiversity loss). A crucial part of the book is dedicated to key sectors of the blue economy, such as fishing, aquaculture, renewable marine energy, coastal tourism, and marine biotechnology. Through concrete examples, the author illustrates how these sectors can contribute to a more sustainable future. Finally, the book proposes solutions to environmental crises and explores various future scenarios: optimistic, intermediate, pessimistic, and adaptive. It stresses the need for integrated governance and collective awareness to protect our oceans and water resources. This book serves as a call to action, encouraging a reconsideration of our relationship with aquatic environments and the construction of an economic model that respects natural balances.

Dr. Emmanuel PARLIER (https://fr.linkedin.com/in/emmanuelparlier) https://www.parlier.eu PARLIER ENVIRONNEMENT SAS LE TRIPLEX 3 PLACE NAPOLEON F85000 LA ROCHE SUR YON +33662810245