منابع مشابه
Geobiology of the Anthropocene
Homo sapiens first appeared on the Earth somewhere in Africa roughly 200 000 years ago. It happened with little fanfare; few could have imagined that this new species of primate would someday disrupt the Earth system to the point of defining a new geologic epoch around its legacy. Indeed, the first 150 000 years of the natural history of our species, mostly in Africa, were fairly uneventful for...
متن کاملStratigraphy of the Anthropocene.
The Anthropocene, an informal term used to signal the impact of collective human activity on biological, physical and chemical processes on the Earth system, is assessed using stratigraphic criteria. It is complex in time, space and process, and may be considered in terms of the scale, relative timing, duration and novelty of its various phenomena. The lithostratigraphic signal includes both di...
متن کاملDefaunation in the Anthropocene.
We live amid a global wave of anthropogenically driven biodiversity loss: species and population extirpations and, critically, declines in local species abundance. Particularly, human impacts on animal biodiversity are an under-recognized form of global environmental change. Among terrestrial vertebrates, 322 species have become extinct since 1500, and populations of the remaining species show ...
متن کاملConservation in the Anthropocene.
It has become commonplace to remark that humans are now the dominant environmental force on the Earth. The indications are strong and diverse. They range from paleontologists reaching a consensus that humans contributed to megafaunal extinctions on at least two continents, North America and Australia (Barnosky et al. 2004); recognition that formerly intact marine ecosystems have changed enormou...
متن کاملAnthropocene Security
Earth system science now suggests that because of the huge transformations caused by human activity we now effectively live in a new geological era called the Anthropocene. The innovations in understanding the earth system make it clear that humanity is a key part of the changing biosphere and this new contextual understanding renders traditional ideas of environment inadequate in dealing with ...
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ژورنال
عنوان ژورنال: Environmental Chemistry
سال: 2016
ISSN: 1448-2517
DOI: 10.1071/en15115