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Rivers : a visual history from river to sea
This breathtaking journey along the most important rivers in the world takes us from the Nile to the Amazon, the Mekong Delta to the Mississippi, the Murray to the Waikato. Our seas and rivers tell a compelling story about our planet.
Book
How forests think : toward an anthropology beyond the human
Can forests think? Do dogs dream? In this astonishing book, Eduardo Kohn challenges the very foundations of anthropology, calling into question our central assumptions about what it means to be human -- and thus distinct from all other life forms. Based on four years of fieldwork among the Runa of Ecuador's Upper Amazon, Eduardo Kohn draws on his rich ethnography to explore how Amazonians interact with the many creatures that inhabit one of the world's most complex ecosystems. Whether or not we recognize it, our anthropological tools hinge on those capacities that make us distinctly human. However, when we turn our ethnographic attention to how we relate to other kinds of beings, these tools (which have the effect of divorcing us from the rest of the world) break down. How Forests Think seizes on this breakdown as an opportunity. Avoiding reductionistic solutions, and without losing sight of how our lives and those of others are caught up in the moral webs we humans spin, this book skillfully fashions new kinds of conceptual tools from the strange and unexpected properties of the living world itself. In this groundbreaking work, Kohn takes anthropology in a new and exciting direction-one that offers a more capacious way to think about the world we share with other kinds of beings.
eBook
At Home in the Okavango
An ethnographic portrayal of the lives of white citizens of the Okavango Delta, Botswana, this book examines their relationships with the natural and social environments of the region. In response to the insecurity of their position as a European-descended minority in a postcolonial African state, Gressier argues that white Batswana have developed cultural values and practices that have allowed them to attain high levels of belonging. Adventure is common for this frontier community, and the book follows their safari lifestyles as they construct and perform localized identities in their interactions with dangerous wildlife, the broader African community, and the global elite via their work in the nature-tourism industry.
eBook
Rivers
Describes the geography of rivers, the impact humans have on them, and conservation of these areas. Also describes plant and animal life in and around around rivers.
Book
Radical chemistry in the Pearl River Delta: observations and modeling of OH and HO.sub.2 radicals in Shenzhen in 2018
The ambient radical concentrations were measured continuously by laser-induced fluorescence during the STORM (STudy of the Ozone foRmation Mechanism) campaign at the Shenzhen site, located in the Pearl River Delta in China, in the autumn of 2018. The diurnal maxima were 4.5x10.sup.6 cm.sup.-3 for OH radicals and 4.2x10.sup.8 cm.sup.-3 for HO.sub.2 radicals (including an estimated interference of 23 %-28 % from RO.sub.2 radicals during the daytime), respectively. The state-of-the-art chemical mechanism underestimated the observed OH concentration, similar to the other warm-season campaigns in China. The OH underestimation was attributable to the missing OH sources, which can be explained by the X mechanism. Good agreement between the observed and modeled OH concentrations was achieved when an additional numerical X equivalent to 0.1 ppb NO concentrations was added into the base model. The isomerization mechanism of RO.sub.2 derived from isoprene contributed approximately 7 % to the missing OH production rate, and the oxidation of isoprene oxidation products (MACR and MVK) had no significant impact on the missing OH sources, demonstrating further exploration of unknown OH sources is necessary. A significant HO.sub.2 heterogeneous uptake was found in this study, with an effective uptake coefficient of 0.3. The model with the HO.sub.2 heterogeneous uptake can simultaneously reproduce the OH and HO.sub.2 concentrations when the amount of X changed from 0.1 to 0.25 ppb. The RO.sub.x primary production rate was dominated by photolysis reactions, in which the HONO, O.sub.3, HCHO, and carbonyls photolysis accounted for 29 %, 16 %, 16 %, and 11 % during the daytime, respectively. The RO.sub.x termination rate was dominated by the reaction of OH+NO.sub.2 in the morning, and thereafter the radical self-combination gradually became the major sink of RO.sub.x in the afternoon. As the sum of the respective oxidation rates of the pollutants via reactions with oxidants, the atmospheric oxidation capacity was evaluated, with a peak of 11.8 ppb h.sup.-1 around noontime. The ratio of P(O.sub.3).sub.net to AOC.sub.VOCs, which indicates the yield of net ozone production from VOC oxidation, trended to increase and then decrease as the NO concentration increased. The median ratios ranged within 1.0-4.5, with the maximum existing when the NO concentration was approximately 1 ppb. The nonlinear relationship between the yield of net ozone production from VOC oxidation and NO concentrations demonstrated that optimizing the NO.sub.x and VOC control strategies is critical to controlling ozone pollution effectively in the future.
Journal Article
Rivers, Memory, And Nation-building
Rivers figure prominently in a nation's historical memory, and the Volga and Mississippi have special importance in Russian and American cultures. Beginning in the pre-modern world, both rivers served as critical trade routes connecting cultures in an extensive exchange network, while also sustaining populations through their surrounding wetlands and bottomlands. In modern times, \"Mother Volga\" and the \"Father of Waters\" became integral parts of national identity, contributing to a sense of Russian and American exceptionalism. Furthermore, both rivers were drafted into service as the means to modernize the nation-state through hydropower and navigation. Despite being forced into submission for modern-day hydrological regimes, the Volga and Mississippi Rivers persist in the collective memory and continue to offer solace, recreation, and sustenance. Through their histories we derive a more nuanced view of human interaction with the environment, which adds another lens to our understanding of the past.
eBook