منابع مشابه
Recent Widespread Tree Growth Decline Despite Increasing Atmospheric CO2
BACKGROUND The synergetic effects of recent rising atmospheric CO(2) and temperature are expected to favor tree growth in boreal and temperate forests. However, recent dendrochronological studies have shown site-specific unprecedented growth enhancements or declines. The question of whether either of these trends is caused by changes in the atmosphere remains unanswered because dendrochronology...
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Recent increases in the seasonal amplitude of atmospheric carbon dioxide (CO2) at high latitudes suggest a widespread biospheric response to high-latitude warming. The seasonal amplitude of net ecosystem carbon exchange by northern Siberian ecosystems is shown to be greater in disturbed than undisturbed sites, due to increased summer influx and increased winter efflux. Increased disturbance cou...
متن کاملIncreasing synoptic scale variability in atmospheric CO2 at Hateruma Island associated with increasing East-Asian emissions
In-situ observations of atmospheric CO2 and CH4 at Hateruma Island (24.05 N, 123.80 E, 47 m a.s.l), Japan shows large synoptic scale variations during a 6-month period from November to April, when the sampled air is predominantly of continental origin due to the Asian winter monsoon. Synoptic scale variations are extracted from the daily averaged values for the years between 1996 and 2007, alon...
متن کاملEffects of increasing atmospheric CO2 on phytoplankton communities and the biological carbon pump
In addition, visual predators are generally less abundant in extremes of low temperature. The appropriate combination of conditions is rarely found in shelf sea waters, and the majority of the overwintering stock resides at depths of 600-2000m in the open ocean, especially in the Norwegian Sea and, it is assumed, in the Labrador/ Irminger Sea in the northwest Atlantic. In the Norwegian Sea, the...
متن کاملThe Increasing Concentration of Atmospheric Co2: How Much, When, and Why?
There is now a sense that the world community has achieved a broad consensus that: 1.) the atmospheric concentration of carbon dioxide (CO2) is increasing, 2.) this increase is due largely to the combustion of fossil fuels, and 3.) this increase is likely to lead to changes in the global climate. This consensus is sufficiently strong that virtually all countries are involved in trying to achiev...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 2001
ISSN: 0028-646X
DOI: 10.1046/j.1469-8137.2001.00042.x