Climate warming as a driver of tundra shrubline advance

@article{MyersSmith2018ClimateWA,
  title={Climate warming as a driver of tundra shrubline advance},
  author={Isla Heather Myers-Smith and David S. Hik},
  journal={Journal of Ecology},
  year={2018},
  volume={106},
  pages={547 - 560}
}
Climate warming is predicted to alter ecological boundaries in high‐latitude ecosystems including the elevational or latitudinal extent of tall shrubs in Arctic and alpine tundra. Over 60 studies from 128 locations around the tundra biome have investigated shrub expansion in tundra ecosystems; however, only six studies test whether shrublines are actually advancing up hill‐slopes or northward into tundra where tall shrubs are currently absent. We test the hypothesis that willow shrublines have… 

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References

SHOWING 1-10 OF 133 REFERENCES

Climate sensitivity of shrub growth across the tundra biome

Rapid climate warming has been linked to increasing shrub dominance in the Arctic tundra. Research now shows that climate–shrub growth relationships vary spatially and according to site

Landscape Heterogeneity of Shrub Expansion in Arctic Alaska

The expansion of shrubs into tundra areas is a key terrestrial change underway in the Arctic in response to elevated temperatures during the twentieth century. Repeat photography permits a glimpse

Patterned-ground facilitates shrub expansion in Low Arctic tundra

Recent expansion of tall shrubs in Low Arctic tundra is widely seen as a response to climate warming, but shrubification is not occurring as a simple function of regional climate trends. We show that

What are the main climate drivers for shrub growth in Northeastern Siberian tundra

Abstract. Deciduous shrubs are expected to rapidly expand in the Arctic during the coming decades due to climate warming. A transition towards more shrub-dominated tundra may have large implications

Thermal segregation drives patterns of alder and willow expansion in a montane ecosystem subject to climate warming

Tall‐shrub expansion into low‐statured communities, a hallmark of recent vegetative change across tundra ecosystems, involves three major genera: Alnus, Betula and Salix. Which genus expands most

Shrubline but not treeline advance matches climate velocity in montane ecosystems of south‐central Alaska

It is hypothesized that the high biotic inertia of forest ecosystems in south-central Alaska may be due to competition with tall shrubs and/or more complex climate controls on the elevational limits of trees than tall shrub, suggesting competitive compensation can be important.

Herbivores inhibit climate‐driven shrub expansion on the tundra

Recent Pan‐Arctic shrub expansion has been interpreted as a response to a warmer climate. However, herbivores can also influence the abundance of shrubs in arctic ecosystems. We addressed these

Shrub cover in northern Nunavik: can herbivores limit shrub expansion?

Recent climate changes have increased the primary productivity of many Arctic and subarctic regions. Erected shrub has been shown to increase in abundance over the last decades in northern regions in

Tall shrub and tree expansion in Siberian tundra ecotones since the 1960s

It is concluded that shrub and tree cover is increasing in tundra ecotones across most of northern Siberia, but rates of increase vary widely regionally and at the landscape scale.

Russian Arctic warming and ‘greening’ are closely tracked by tundra shrub willows

Growth in arctic vegetation is generally expected to increase under a warming climate, particularly among deciduous shrubs. We analyzed annual ring growth for an abundant and nearly circumpolar erect
...