cycle

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Related to carbon cycle: nitrogen cycle, water cycle, Oxygen cycle

cycle

noun age, alternation, circle, circuit, consecution, course, eon, epoch, era, flow, period, recurrence, recurring period, regular return, regglarity of recurrence, repetitiveness, revolution, rotation, round, sequence, succession
See also: annum, frequency, life, sequence, succession
References in periodicals archive ?
While on the topic of insufficient knowledge of the biological component of the vineyard system as it relates to [CO.sub.2] and the carbon cycle, another poorly understood process is the nitrogen cycle in the vineyard.
The objectives of the book are to: 1) discuss the role of photosynthesis in regulating atmospheric concentrations of C[O.sub.2] and [O.sub.2] (most chapters address various aspects of this ratio); 2) promote research and discussion about how the various [C.sub.2], [C.sub.3], [C.sub.4], and CAM carbon cycles and algal C[O.sub.2] concentrating mechanisms could be integrated to help explain the regulation of atmospheric C[O.sub.2]; and 3) increase exchange among biochemists concerned primarily with detailed reactions of photosynthetic C[O.sub.2] metabolism, and geologists, plant ecophysiologists, ecologists, and others concerned about increasing atmospheric C[O.sub.2].
Because the ocean carbon cycle is affected by environmental changes in light, temperature, and nutrient availability, the researchers can use their new results to improve climate models and better forecast how the ocean carbon cycle will respond to future global climate change, Weber said.
"However, the anthropogenic disturbance of the carbon cycle merits its own appraisal."
The colloquium lecture component introduced the physical, biological, and chemical mechanisms that regulate the global carbon cycle and their representation in Earth system models.
"But animals the world over, working in different ways to influence the carbon cycle, might actually have a large impact.
The carbon cycle looks very different depending on which timescale you focus on.
Trees are part of a dynamic carbon cycle that maintains balance in the Earth's atmospheric gases.
The finding represents the first evidence that bacterial communication plays a crucial role in Earth's carbon cycle. It was reported Feb.
They discuss the history and current issues of energy tax policy; the federal budget and electricity and fuel conservation issues; major provisions of the Energy Independence and Security Act of 2007; federal programs for biofuels incentives; and implications for climate change and Congress of the carbon cycle, which is longer than the election cycle.
Unlike coal--which is extracted from underneath the Earth's surface and thus releases additional levels of carbon dioxide (CO2) into the atmosphere when burned--biomass is part of the Earth's contemporary carbon cycle. When trees are harvested sustainably, their growth absorbs CO2 as fast as their burning can release it.
These guidelines are frequently referred to as the earth system and include components such as plate tectonics, the water cycle, and the carbon cycle. This Digest describes the development of earth systems science and earth systems education as developed in response to the science standards.