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To understand the global warming mechanism, global mapping of primary production was carried out under the GCMAPS program. The program was concerned with marine and terrestrial environmental changes, which affect carbon cycle on the regional and global scales. On the regional scale, warm phase of ENSO (El Niño / Southern Oscillation) has been shown to affect economic activities in many countries. The keyword for understanding mechanism of global warming is 'primary productivity'. The earth observation satellites (EOS) like the ADEOS of Japan, and the SeaWiFS, Sea Star and Terra of the U.S.A. provided much required data for modeling and verification of primary production estimates on both la...
The environment is considered the surroundings in which an organism operates, including air, water, land, natural resources, flora, fauna, humans and their interrelation. It is this environment which is both so valuable, on the one hand, and so endangered on the other. And it is people who are by and large ruining the environment both for themselves and for all other organisms. This book reviews the latest research in this field which is vital for everyone.
Most research into humans' impact on the environment has focused on large-scale societies; a corollary assumption has been that small scale economies are sustainable and in harmony with nature. The contributors to this volume challenge this notion, revealing how such communities shaped their environment—and not always in a positive way. Offering case studies from around the world—from Brazil to Japan, Denmark to the Rocky Mountains—the chapters empirically demonstrate the substantial transformations of the surrounding landscape made by hunter-gatherer and limited horticultural societies. Summarizing previous research as well as presenting new data, this book shows that the environmental impact and legacy of societies are not always proportional their size. Understanding that our species leaves a footprint wherever it has been leads to both a better understanding of our prehistoric past and to deeper implications for our future relationship to the world around us.
This open access book is the proceedings of the 14th International Symposium on Biomineralization (BIOMIN XIV) held in 2017 at Tsukuba. Over the past 45 years, biomineralization research has unveiled details of the characteristics of the nano-structure of various biominerals; the formation mechanism of this nano-structure, including the initial stage of crystallization; and the function of organic matrices in biominerals, and this knowledge has been applied to dental, medical, pharmaceutical, materials, agricultural and environmental sciences and paleontology. As such, biomineralization is an important interdisciplinary research area, and further advances are expected in both fundamental and applied research.
This two-volume work is a testament to the abiding interest and human fascination with ammonites. We offer a new model to explain the morphogenesis of septa and the shell, we explore their habitats by the content of stable isotopes in their shells, we discuss the origin and later evolution of this important clade, and we deliver hypotheses on its demise. The Ammonoidea produced a great number of species that can be used in biostratigraphy and possibly, this is the macrofossil group, which has been used the most for that purpose. Nevertheless, many aspects of their anatomy, mode of life, development or paleobiogeographic distribution are still poorly known. Themes treated are biostratigraphy,...
Who are the people of the Ryukyu Islands? How could they survive and prosper on small, isolated islands? How did the independent Ryukyu Kingdom become a major player in East Asian medieval trade? Ancient Ryukyu explores 30,000 years of human occupation in the Ryukyu Islands, from the earliest human presence in the region up to A.D. 1609 and the emergence of the Ryukyu Kingdom. It focuses on the unique geopolitical position of the islands, their environment, and the many human communities whose historical activities can be discerned. Drawing on the impressive work of dozens of local archaeologists who have brought the islands’ early history to life, Richard Pearson describes explorers and s...
Coral reefs, which are one of the most productive and biodiverse ecosystems on Earth, serve various important roles, such as providing shelter and spawning grounds to a wide range of marine animals. However, the global decline of hard corals in tropical and subtropical regions is a growing concern. A recent review of the Intergovernmental Panel on Climate Change (IPCC) indicated that only 10%–30% of coral reefs would survive with an increase of 1.5 °C in global warming temperature. Of coral reefs around the world, the coral reefs in eastern Asia face one of the most industrially developed and high population areas in the world. Thus, coral reefs of eastern Asia have been affected by various anthropogenic factors, such as eutrophication, coastal development, anthropogenic pollutants, ocean acidification, disease, and overfishing. Therefore, urgent research is required to determine the levels at which different factors will affect coral health. Besides, we propose a perspective on coral reef (especially those in eastern Asia) conservation under climate change and various anthropogenic activities.