Ecosystems Of The Deep Oceans
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Ecosystems of the Deep Oceans
This volume examines the deep sea ecosystem from a variety of perspectives. The initial chapters examine the deep-sea floor, the deep pelagic environment and the more specialised chemosynthetic environments of hydrothermal vents and cold seeps. These environments are examined from the perspective of the relationship of deep-sea animals to their physico-chemical environment.Later chapters examine the biogeography of the main deep oceans (Atlantic, Pacific and Indian) with particular attention to the downward flux of surface-derived organic matter and how this drives the processes within the deep-sea ecosystem. The peripheral deep seas including the polar seas and the marginal deep seas (inter alia the Mediterranean, Red, Caribbean and Okhotsk seas) are explored in the same context. The final chapters examine the processes occurring in the deep sea and include an analysis of why the deep sea has high species diversity, how the fauna respond to organic input and how species have adapted reproductive activity in the deep sea. The volume concludes with an analysis of the anthropogenic impact on the deep sea.
The Geopolitics of Deep Oceans
Long regarded as an empty and inhospitable environment, the deep ocean is rapidly emerging as an ecological hot spot with a remarkable diversity of biological life. Yet, the worlds oceans are currently on a dangerous trajectory of decline, threatened by acidification, oil and gas drilling, overfishing, and, in the long term, deep-sea mining, bioprospecting, and geo-engineering. In The Geopolitics of Deep Oceans, noted environmental sociologist John Hannigan examines the past, present and future of our planets final frontier. The author argues that our understanding of the deep - its definition, boundaries, value, ownership, health and future state - depends on whether we see it first and foremost as a resource cornucopia, a political chessboard, a shared commons, or a unique and threatened ecology. He concludes by locating a new storyline that imagines the oceans as a canary-in-the-mineshaft for gauging the impact of global climate change. The Geopolitics of Deep Oceans is a unique introduction to the geography, law, politics and sociology of the sub-surface ocean. It will appeal to anyone seriously concerned about the present state and future fate of the largest single habitat for life on our planet.
Deep-sea Biodiversity
Rex and Etter present the first synthesis of patterns and causes of biodiversity in organisms that dwell in the vast sediment ecosystem of ocean floor. They offer a new understanding of marine biodiversity that will be of general interest to ecologists and is crucial to responsible exploitation of natural resources at the deep-sea floor.