This edited collection analyzes dialectically the role of digital technology in contemporary society. The contributors identify the cultural logics and oppressive forces reproduced in the digital era and challenge celebratory readings of digital technology. Dinosaurs, Birds, and Pterosaurs of Korea. This is the first academic book about the dinosaurs, birds and pterosaurs of Korea, one of the richest and most exciting regions on earth for the study of vertebrate ichnology.
Many ichnogenera appear indigenous to Korea, and based on present evidence there is nowhere else in the world where such. Describes the evolution of life on Earth, from the first life forms to complex organisms and the age of the dinosaurs, and explains how some modern animals evolved from prehistoric ancestors. Neogene Mammals. Authors: Spencer G. Lucas, Gary S. Training in Tracking. The Wildlife Conservation Society has made the complete list available through its Web site.
Fewer people, less infrastructure, less human land use, and less power lead to less human conflict. A recent article in Science provides another compelling argument for preserving wild places. Andrew Balmford of the University of Cambridge and his co-authors cited the often-overlooked economic benefits of healthy ecosystems.
They found that in addition to the harvest of wild organisms for food, fuel, fiber, and medicine, people also benefit from ecosystem services like nutrient cycling, soil formation, and flood protection. Although ecosystem services have not historically been priced, the authors estimated that an effective global conservation program would repay its cost a hundredfold. But is human presence necessarily bad?
We need places to live, so we have urbanization. But we also need a way to assess the tradeoff between the obvious benefits and possible negative consequences. If you live in a suburban setting, you can develop street curbs that allow turtles and amphibians to cross without getting pulled into the drains. Luckily, he can point to some success stories. Kerry Turner. Economic reasons for conserving wild nature.
Registration or subscription may be required for access. Sanderson E. Jaiteh, M. Levy, K. Redford, A. Wannebo, and G. The human footprint and the last of the wild. PDF file, 1. Land Life Human Presence.
EO Explorer. At the time of publication, it represented the best available science. Subscribe to our newsletters. Footprints of the Laetoli trackway in Tanzania show some of the earliest lasting human impact.
Increased human population often leads to greater influence on the environment and sharper declines in species and ecosystems. Footprints of the Laetoli trackway in Tanzania show some of the earliest lasting human impact. Paul Getty Trust , All rights reserved.
While teaching a class in Nairobi in summer , conservationist Eric Sanderson heard a familiar story. The woman who organized the course told him that when she was little, her father would take her to a nearby place to watch elephants and giraffes.
Now, the area is a suburban banking center. Prairie dogs, lemurs, and mandrinette hibiscus plants are just a few of the species affected by human activity.
These organisms share a common threat: human impact, usually in the form of habitat destruction, eradication efforts, overharvesting, and the introduction of invasive species. Though conservationists have long been concerned about the impact of human activity, a lack of quantifiable data has historically hampered efforts to achieve conservation goals. Now, Sanderson, Levy, and collaborators have taken an important step in resolving that vagueness. Satellite data facilitated the production of global land use and land cover maps, and geographic information systems allowed researchers to integrate satellite and population data efficiently.
Using these technologies, Sanderson and his collaborators chose four types of data to measure human influence: population density, land transformation, human access, and power infrastructure. Beyond its effects on the nearby area, it can have global consequences, such as worldwide changes in soils and increased demand for fresh water for irrigation.
The authors also found that the greater the human access through roads, rivers, and coastlines, the greater the likelihood of resource extraction, pollution, and the introduction of invasive species. Both human access and land transformation have been fueled by increased power infrastructure access to fossil fuel and electrical power over the last century. Throughout most of human history, impact on the environment was constrained by raw human and animal muscle power.
But today, one person with a bulldozer can match the power of horses. The researchers measured these four variables using nine data sets, assigning each locality a numerical value between 0 minimum and 10 maximum. Next, they summed the scores for all the data sets. To account for these differences, the scores needed refinement. The Human Footprint is a quantitative analysis of human influence across the globe. In this map, human impact is rated on a scale of 0 minimum to maximum for each terrestrial biome.
A score of 1 indicates the least human influence in the given biome.
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