Influence of snowfall and melt timing on tree growth in subarctic Eurasia

Article Abstract:

Tree-ring measurements of conifers from the Siberian northern timberline have been used to assess connections between tree-ring growth and temperatures at different points in the growth season. This research has produced evidence to support the view that delayed cambial activation linked with later snow melt is the real reason for weakening of the connection between summer temperature and tree-ring width dynamics in the forest-tundra area of the Siberian subarctic. It is possible that these connections may apply through a large part of this extremely large area, as tree-ring series are closely correlated over large distances in this part of the world.

Research, Siberia, Dendrochronology

---

Influence of volcanic eruptions on Northern Hemisphere summer temperature over the past 600 years

Article Abstract:

Variations in summer warmth can be measured by examining the density of tree rings from forests in the Northern Hemisphere. This allows summer temperatures to be plotted for the six hundred years from the 15th century. There are links between volcanic eruptions and climate change in the 19th century, such as the cool summers of 1816 and 1884. Other eruptions before the 19th century can also be evaluated. The coldest summer in this period happened in 1601, and this could be linked to the eruption of a Peruvian volcano, Huaynaputina. The Peruvian eruption may have been more severe than first thought, or may have been accompanied by other eruptions.

Analysis, Weather, Volcanological research, Volcanism

---

Reduced sensitivity of recent tree-growth to temperature at high northern latitudes

Article Abstract:

Large-regional-scale wood-density/air temperature links have been examined based on measurements from several sites at high latitudes in the Northern Hemisphere. Tree-density series show a strong link with summer temperature measurements average over the same areas. Decadal-scale trends in wood density and summer temperatures have diverged over the second half of the twentieth century, as wood density has fallen.

Observations, Trees, Trees (Plants), Plant development, Tree-rings, Tree rings, Northern Hemisphere

Similar abstracts:

• Abstracts: Influence of habitat abundance and fragmentation on northern spotted owls in western Oregon. part 2 Within-stand nest site selection by spotted owls in the eastern Washington Cascades
• Abstracts: Influence of temperature and precipitation on survival of wild turkey poults. Survival and reproduction of female wild turkeys in New York
• Abstracts: Influence of burrow acoustics on sound reception by frogs Eupsophus (Leptodactylidae). Effects of enhanced lighting on the behaviour of nocturnal frogs
• Abstracts: Effects of landscape and weather on winter survival of ring-necked pheasant hens. Survival of ring-necked pheasant chicks during brood rearing
• Abstracts: Consequences of climate warming and lake acidification for UV-B penetration in North American boreal lakes. Past ultraviolet radiation environments in lakes derived from fossil pigments

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.