Leah Bendell-Young – författare
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3 produkter
3 produkter
Inbunden, Engelska, 2001
1 080 kr
Skickas inom 10-15 vardagar
This text presents scientific evidence produced by ocean scientists on the current state of ocean ecosystems, globally. Covering over 70 per cent of the earth's surface, the ocean is the world's largest common property resource, jointly owned by over six billion humans. It is the foundation for life on earth as we know it. The content ranges from the movement of essential nutrients in the sea to the loss of diversity as a consequence of overharvesting practices and habitat loss. Essential to the maintenance of complex ecosystems is the proper functioning of biogeochemical cycles within the oceans. This book addresses this topic by detailing behaviour of the essential nutrients, nitrogen and phosphorus, and discussing how these cycles are being altered so as to compromise the function of ocean ecosystems. Issues regarding how man-made activities are further altering the structure of oceanic systems are also discussed.In addition, the mechanism for and consequences of the loss of biodiversity are described, with issues such as overfishing, the invasion of exotic species, and the loss of ocean habitat being presented in such a way that the average reader can readily grasp the concepts. Rather than end on a negative note, the final chapters provide recommendations and directions for solutions as to how to reverse these human-induced trends.
Häftad, Engelska, 2012
1 080 kr
Skickas inom 10-15 vardagar
Who Speaks for the Oceans? The question has been asked a lot in recent years - just who is looking out for our oceans? Covering over seventy percent of the earth's surface it is the world's largest common property resource,jojntly owned by over six billion humans. It is the foundation for life on earth as we know it. Over the years, many people have spoken about various aspects of our ocean environments and they have spoken to different audiences in many different ways. For many in the public realm, Jacques Cousteau spoke for the ocean. Since his passing, no single voice with the sallle public identity or recognition has emerged. Certainly the many governments bordering our oceans cannot agree on common principles or issues of ocean use and management. We might be tempted think that we do not have an ocean spokesperson or champion, but we would be wrong. Today, the rapidly growing number of scientists working hard to expand our under standing of our ocean realm are the ocean voices we should listen to. At the same time as our scientists advance their understanding of the oceans, we all need to advance our abilities and commitment to communicate on behalf of the oceans with broader and broader audiences who need to be aware of where things stand. Often called "the last great frontier", earth's oceans are vast, widely varied, and are hard to get to, arid into, to do the research we need done.
E-bok
PDF, Engelska, 20121 416 kr
Läs direkt efter köp
Who Speaks for the Oceans? The question has been asked a lot in recent years - just who is looking out for our oceans? Covering over seventy percent of the earth''s surface it is the world''s largest common property resource,jojntly owned by over six billion humans. It is the foundation for life on earth as we know it. Over the years, many people have spoken about various aspects of our ocean environments and they have spoken to different audiences in many different ways. For many in the public realm, Jacques Cousteau spoke for the ocean. Since his passing, no single voice with the sallle public identity or recognition has emerged. Certainly the many governments bordering our oceans cannot agree on common principles or issues of ocean use and management. We might be tempted think that we do not have an ocean spokesperson or champion, but we would be wrong. Today, the rapidly growing number of scientists working hard to expand our under standing of our ocean realm are the ocean voices we should listen to. At the same time as our scientists advance their understanding of the oceans, we all need to advance our abilities and commitment to communicate on behalf of the oceans with broader and broader audiences who need to be aware of where things stand. Often called "the last great frontier", earth''s oceans are vast, widely varied, and are hard to get to, arid into, to do the research we need done.