Mammoth steppe: a high-productivity phenomenon

  title={Mammoth steppe: a high-productivity phenomenon},
  author={Sergei Zimov and Nikita S. Zimov and Alexei Tikhonov and F. Stuart Chapin},
  journal={Quaternary Science Reviews},

The Past and Future of the Mammoth Steppe Ecosystem

During the Last Glacial Maximum (LGM) the mammoth steppe was the planet’s biggest biome. Ice rich loess-like soils of this biome covered vast northern territories. These soils are currently one of

A modern analogue of the Pleistocene steppe‐tundra ecosystem in southern Siberia

Steppe‐tundra is considered to have been a dominant ecosystem across northern Eurasia during the Last Glacial Maximum. As the fossil record is insufficient for understanding the ecology of this

Pleistocene Arctic megafaunal ecological engineering as a natural climate solution?

Support is found for a megafauna-based arctic NCS yielding substantial income in carbon markets and generating an ecosystem shift that is economically viable in terms of carbon benefits and of sufficient scale to play a significant role in global climate change mitigation.

Late Pleistocene shrub expansion preceded megafauna turnover and extinctions in eastern Beringia

Postglacial expansion of shrub tundra preceded the regional extinctions of horse and mammoth and began during a period when the frequency of 14C dates indicates large grazers were abundant, indicating climate was the primary control of steppe-tundra persistence and that climate-driven vegetation change may pose threats to faunal diversity in the future.

Reframing the Mammoth Steppe: Examining Mammoth Steppe Ecology Using Carbon and Nitrogen Isotopic Compositions of Megafauna Collagen

The Pleistocene mammoth steppe was a vast biome that stretched from northwestern Europe to central Canada. A diverse set of megaherbivore and megacarnivore species lived within this biome and there

Non-climatic causes for low productivity of Siberian tundra ecosystems

Tundras are low-productivity communities. If it is only a consequence of unfavourable climate, then how could herb communities that fed numerous large herbivores (mammoth fauna) exist during more

The large mean body size of mammalian herbivores explains the productivity paradox during the last glacial maximum

It is found that the larger mean body size of mammalian herbivores than today is the crucial clue to explain the productivity paradox, due to a more efficient exploitation of grass production by grazers with a large body size.

Late Quaternary dynamics of Arctic biota from ancient environmental genomics

A large-scale environmental DNA metagenomic study of ancient plant and mammal communities, analysing 535 permafrost and lake sediment samples from across the Arctic spanning the past 50,000 years, provides several insights into the long-term dynamics of the Arctic biota at the circumpolar and regional scales.

The characteristics of a relic steppe of Northeast Asia: refuges of the Pleistocene Mammoth steppe (an example from the Lower Kolyma area)

An ecosystem of a relic petrophytic steppe was studied in the Lower Kolyma River region. The soils of the steppe area significantly differed from those of the surrounding open larch forests in the



The Past and Future of the Mammoth Steppe Ecosystem

During the Last Glacial Maximum (LGM) the mammoth steppe was the planet’s biggest biome. Ice rich loess-like soils of this biome covered vast northern territories. These soils are currently one of

Carbon storage in permafrost and soils of the mammoth tundra‐steppe biome: Role in the global carbon budget

During the Last Glacial Maximum (LGM), atmospheric CO2 concentration was 80–100 ppmv lower than in pre‐industrial times. At that time steppe‐tundra was the most extensive biome on Earth. Some authors

Steppe-Tundra Transition: A Herbivore-Driven Biome Shift at the End of the Pleistocene

Results indicate that mammalian grazers have a sufficiently large effect on vegetation and soil moisture that their extinction could have contributed substantially to the shift from predominance of steppe to tundra at the Pleistocene-Holocene boundary.

Pleistocene Park: Return of the Mammoth's Ecosystem

  • S. Zimov
  • Environmental Science
  • 2005
The hypothesis that humans, rather than climate change, caused the ecosystem shift at the beginning of the Holocene is tested, and the stabilization of the northern tundra soils that this reconstitution could bring also could prevent the release of vast amount of carbon now sequestered in the Siberian soils but in danger of being released in the warmer times projected for the future.

Carbon-biosphere-climate interactions in the last glacial maximum climate

The total carbon inventory in the terrestrial biosphere in the last glacial maximum (LGM), 18 kyr ago, is analyzed in a series of experiments that examine the sensitivity of the inventory to

Increases in terrestrial carbon storage from the Last Glacial Maximum to the present

EVIDENCE from ice cores1 indicates that concentrations of atmospheric carbon dioxide were lower by about 75 p.p.m. during the Last Glacial Maximum (LGM; ∼18,000 years ago) than during the present

Responses of Arctic Tundra to Experimental and Observed Changes in Climate

We manipulated light, temperature, and nutrients in moist tussock tundra near Toolik Lake, Alaska to determine how global changes in these parameters might affect community and ecosystem processes.

Feedbacks between climate and boreal forests during the Holocene epoch

PREVIOUS studies1–5 have demonstrated that the predictions of global climate models are highly sensitive to large changes in vegetation cover, such as the complete removal of tropical or boreal