نتایج جستجو برای: ecosystem cycles
تعداد نتایج: 171643 فیلتر نتایج به سال:
NATURE CLIMATE CHANGE | VOL 5 | JUNE 2015 | www.nature.com/natureclimatechange The response of the terrestrial biosphere to increasing atmospheric CO2 concentration (Ca) is a major uncertainty in models projecting future climate change, because of the critical feedback between terrestrial ecosystem carbon (C) cycling and the atmosphere1–3. Current Earth system models disagree strongly on the si...
The ecosystem consequences of dramatic declines or changes in biodiversity have spurred considerable research and tremendous debate that has rekindled most of the major conflicts in ecology, creating a sense of déjà vu. These conflicts include whether ecosystem or community ecology provides better insights into the workings of nature, the relative importance of biotic vs. abiotic factors in gov...
We prove the following results : (a) The Cube-Connected Cycles network of dimension n is a subgraph of the Butterry network of dimension n. (b) The Shuue-Exchange network of dimension n is a subgraph of the DeBruijn network of dimension n.
Context: The main part of software engineering methods, tools and technologies has developed around projects as the central organisational form of software development. A project organization depends on clear bounds regarding scope, participants, development effort and lead-time. What happens when these conditions are not given? The article claims that this is the case for software product spec...
© The Ecological Society of America www.frontiersinecology.org H are increasingly influencing biogeochemical cycles at a global scale (Vitousek et al. 1997; Rojstaczer et al. 2001). From the publication of “man’s role in changing the face of the Earth” (Thomas 1956) to the recent syntheses on climate change (eg Solomon et al. 2007), the role of cities in altered biogeochemical cycles has receiv...
The anthropogenic revegetation for combating desertification in China has been a long-term strategy that induced shrub encroachment desert steppe and regionally notable greening. Although the benefits of reversing desertification, preventing erosion, providing biomass have recognized, effects on water carbon cycles, critical process terrestrial ecosystem, are still poorly understood. This study...
The subterranean world hosts up to one-fifth of all biomass, including microbial communities that drive transformations central to Earth's biogeochemical cycles. However, little is known about how complex microbial communities in such environments are structured, and how inter-organism interactions shape ecosystem function. Here we apply terabase-scale cultivation-independent metagenomics to aq...
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