Sentences with phrase «human alteration»

That is, if one is not confused about uncertainty, the more uncertainty one has about climate prediction, the more one should be more afraid of human alteration of the atmosphere.

Broad evidence from archaeology, paleoecology, environmental history, and other disciplines suggests that direct human alteration of terrestrial ecosystems by hunting, foraging, land clearing, agriculture, and other activities has been profound in some regions at least since the late Pleistocene, with long - term impacts from forest clearing, increased fire frequencies, megafaunal extinctions, species invasions, soil erosion, and others (13, 14).

The key to better environmental outcomes is not in ending human alteration of environments but in anticipating and mitigating their negative consequences.

And, in spite of all its complexity and uncertainties, we should not lose track of the simple fact that theory, actual observations of the planet, and complex models - however imperfect each is in isolation - all point to ongoing, potentially dangerous human alteration of climate.

Significant human alteration of the biosphere began more than 15,000 years ago as Palaeolithic tribes evolved social learning, advanced hunting and foraging technologies, and the use of fire, and used them to open up forested landscapes and kill off megafauna.

Steffen et al (2015) revise the «planetary boundaries framework» initially proposed in 2009 as the «safe limits» for human alteration of Earth processes (Rockstrom et al 2009).

The two foreign climate models used in the National Assessment make predictions of U.S. climate change based upon human alterations of the atmosphere.

So if the IPCC found that climate change was not being affected by human alteration of the atmosphere or that it is not «dangerous» there would be no need for them to exist.

In their conclusion, the authors state that it is important for conservationists to see climate change not as one of numerous independent variables acting on species survival in mountain landscapes, but as an exacerbating force over the many direct human alterations to these areas.

Furthermore, Ellis et al. argue that the «key to better environmental outcomes is not ending human alteration» but «anticipating and mitigating the negative consequences» of human environmental perturbation.

Human alteration of environments produces multiple effects, some advantageous to societies, such as enhanced food production, and some detrimental, like environmental pollution with toxic chemicals, excess nutrients and carbon emissions from fossil fuels, and the loss of wildlife and their habitats.

Brooks, a senior researcher on the Olorgesailie project, describes two roughly finger - sized pieces of ochre that bear the marks of human alteration — and perseverance.

Human alteration of Earth systems tends to be far more extensive and complex than one would expect based on numbers alone.

Human alteration of the landscape puts most species at risk.

The fact that it is endemic drought that threatens the Great Salt Lake in Utah, home to Smithson's beautiful, coiled extension of land into water, is darkly ironic: one human alteration to the landscape negatively impacted by another.

Also, Ellis et al. seem to conflate human alteration of terrestrial environments with human alteration of the fundamental state of the Earth System as a whole.

In theory, the treaty and addenda like the Kyoto Protocol, only apply to climate changes attributable to human alterations of the global atmosphere.

That the climate will respond to human alteration of the carbon cycle is pretty much just basic physics.

Melting permafrost (deposition of the sediments by river flows and human alteration of hydro cycle.

CO2 has risen by 40 % in just the past 200 years, contributing to human alteration of the planet's energy budget that has so far warmed Earth by about 0.8 °C (1.4 °F).

Twenty years ago, Bill McKibben wrote of the human alteration of every aspect of the natural world.