Sentences with phrase «growth season temperature»

Not exact matches

The rings formed in tree trunks during trees» growth periods are valuable repositories of environmental information: the ring width reflects the tree's growth conditions, which are a combination of the temperature, precipitation and nutrient conditions during a given growing season.

But warmer temperatures, longer growing seasons, and thawing permafrost (which supplies nutrients) are also promoting the growth of aquatic plants in the ponds, shrinking the size of the basins.

«Other variables, including temperatures during the rest of the growing season in July and August, barely had an impact on shrub growth.»

Microscopic imaging reveals the pattern of annual rings in shrub stems, which the researchers used to determine that shrub growth is controlled by temperatures in June, the first month of the brief arctic growing season.

«Combined with warmer ocean temperatures throughout the year, this leads to a longer growing season and faster plankton growth rates.

In physical geography, tundra is an area where the tree growth is hindered by low temperatures and short growing seasons.

Warming temperatures, increased atmospheric CO2, and longer growing seasons provide opportunities for increased photosynthesis, thereby improving forest growth and productivity (Ehleringer and Cerling 1995; Joyce and Birdsey 1995; Waring and Running 2007; NPS 2010).

They measure growth, which can be affected by rainfall, temperature, growing season length, etc..

These rings form when temperatures drop well below freezing for extended periods during the tree's growing season, and are evidenced by physical scarring of that year's growth ring that can be caused by volcanically induced climate dislocation — an idea first suggested by LaMarche and Hirschboeck in 1984.

Yet our prediction is that all trees within a region of synoptic or lesser scale where growing season temperatures lie below the growth threshold will experience a missing ring.

The attenuation of the response is produced primarily by the loss of sensitivity to further cooling for eruptions that place growing season temperatures close to the lower threshold for growth.

This is data linking temperature with pollen count, how do we know that the increase of temperature is not causing the increase in pollen count (increased land available for growth, longer growing seasons, etc)?

Other in situ and satellite data suggest that even though the seasonal ice cover was formed later in the fall of 2007, the mean thickness of first year ice cover is comparable to that of the previous two seasons because of lower snow accumulation and lower air temperatures and thus, faster growth.

Changes in proxy records, either physical (such as the isotopic composition of various elements in ice) or biological (such as the width of a tree ring or the chemical composition of a growth band in coral), do not respond precisely or solely to changes in any specific climate parameter (such as mean temperature or total rainfall), or to the changes in that parameter as measured over a specific «season» (such as June - August or January - December).

While their conservative physiology — retention of needles for one to several decades — provides a buffer to year - to - year changes evident in the high autocorrelation of ringwidth series, the critical factors limiting growth are growing - season length and mean temperature over that period.

Plus, warmer spring temperatures may increase the growth of certain types of mold, further worsening the season for allergy sufferers.

The researchers also discovered that a temperature that is only three degrees Celsius warmer increased the dispersal of seeds and the speed at which populations spread throughout the growth season.

These could be high winds, high temperatures and drought, and, in desert regions, unusually high rainfall the preceding season that triggers greater growth and more fuel for the next fire.

Changes in proxy records, either physical (such as the isotopic composition of various elements in ice) or biological (such as the width of a tree ring or the chemical composition of a growth band in coral), do not respond precisely or solely to changes in any specific climate parameter (such as mean temperature or total rainfall), or to the changes in that parameter as measured over a specific «season» (such as June to August or January to December).

For TRW, forcing is dominated by July temperatures of the current year of growth while MXD has a significant positive response to June, July and August temperatures of the current growing season.

However, when the new Torneträsk data is analysed using a regional temperature record representing a large area in northern Sweden, there is a significant growth response to an extended five - month summer season, including also April and May (Fig. 7), thus confirming the results from Briffa et al. (1990) who found a significant correlation with April — August temperatures using gridded (5 ° × 5 °) temperature data for northern Fennoscandia.

I'm looking forward to the explanation of why temperate and boreal trees» primary and secondary meristems go dormant during the cold season (= no growth) but those of tropical trees, which have no such season, do not, and why ITRDB tree ring data at temperature limited sites show such suspiciously high correlations between the growth rates of the different trees in a stand.

«Along with an increase in temperatures, the spring season also brings out the buyers and an increase in demand to the housing market, which most often translates to faster price growth and a decrease in marketing times,» says Alex Villacorta, vice president of Research and Analytics at Clear Capital.