Rising CO2 - future ecosystems
نویسندگان
چکیده
منابع مشابه
Contrasting responses of forest ecosystems to rising atmospheric CO2: Implications for the global C cycle
[1] In two parallel but independent experiments, Free Air CO2 Enrichment (FACE) technology was used to expose plots within contrasting evergreen loblolly pine (Pinus taeda L.) and deciduous sweetgum (Liquidambar styraciflua L.) forests to the level of CO2 anticipated in 2050. Net primary production (NPP) and net ecosystem production (NEP) increased in both forests. In the year 2000, after expos...
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The sequestration of fossil fuel CO2 in the deep ocean has been discussed by a number of workers, and direct ocean experiments have been carried out to investigate the fate of rising CO2 droplets in seawater. However, no applicable theoretical models have been developed to calculate the dissolution rate of rising CO2 droplets with or without hydrate shells. Such models are important for the eva...
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Avoiding, preparing for, and effectively responding to the significant challenges posed by climate change require extensive engagement across scientific disciplines, decision makers, and the public. The multidisciplinary nature of climate change and the speed with which it has moved from being the concern of a few to affecting the lives of millions mean that few people have received the educati...
متن کاملExplaining Global Increases in Water Use Efficiency: Why Have We Overestimated Responses to Rising Atmospheric CO2 in Natural Forest Ecosystems?
BACKGROUND The analysis of tree-ring carbon isotope composition (δ(13)C) has been widely used to estimate spatio-temporal variations in intrinsic water use efficiency (iWUE) of tree species. Numerous studies have reported widespread increases in iWUE coinciding with rising atmospheric CO(2) over the past century. While this could represent a coherent global response, the fact that increases of ...
متن کاملThe CO2 balance of unproductive aquatic ecosystems
Community respiration (R) rates are scaled as the two-thirds power of the gross primary production (P) rates of aquatic ecosystems, indicating that the role of aquatic biota as carbon dioxide sources or sinks depends on its productivity. Unproductive aquatic ecosystems support a disproportionately higher respiration rate than that of productive aquatic ecosystems, tend to be heterotrophic (R > ...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 2001
ISSN: 0028-646X
DOI: 10.1046/j.1469-8137.2001.00118.x