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Everything in Mallory McDonald's life is changing! Fourth grade is over and summer is off to a shaky start. The Winstons are moving from Wish Pond Road to a bigger house across town, so Mallory's best friends, Mary Ann and Joey, won't be living next door anymore. And her friend Chloe Jennifer will be gone for the whole summer. On top of all this, Mallory's cat, Cheeseburger, suddenly gets sick! How will Mallory deal with all these changes? Will the vet help Cheeseburger get well? And will Mallory find new ways to have fun this summer?
"Learn about how climate change affects the quality of the air we breathe"--
In his speech at the annual banquet of the Royal Academy in 1894, among many other good things, Mr. Andrew Lang said: "The thrifty plan of giving us sermons, politics, fiction, all in one stodgy sandwich, produces no permanent literature, produces but temporary 'tracts for the times.' Fortunately we have among us many novelists-young ones, luckily-who are true to the primitive and eternal, the Fijian canons of fiction. We have Oriental romance from the author of 'Plain Tales from the Hills.' We have the humor and tenderness-certainly not Fijian, I admit-which produces that masterpiece 'A Window in Thrums'; we have the adventurous fancy that gives us 'A Gentleman of France, ' 'The Master of Ballantrae, ' 'Micah Clarke, ' 'The Raiders, ' 'The Prisoner of Zenda.'" The last of these books was by Anthony Hope Hawkins, whom Mr. Lang thus classed among potential immortals. This romance has made him within the last three months fairly famous. Walter Besant, too, has stamped it with his high approval, and the English and American press have been unusually unanimous in their praise.
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There are significant pressures from climate change and air pollution that forests currently face. This book aims to increase understanding of the state and potential of forest ecosystems to mitigate and adapt to climate change in a polluted environment. It reconciles process-oriented research, long-term monitoring and applied modeling through comprehensive forest ecosystem research. Furthermore, it introduces "forest super sites for research for integrating soil, plant and atmospheric sciences and monitoring. It also provides mechanistic and policy-oriented modeling with scientifically sound risk indications regarding atmospheric changes and ecosystem services. Identifies current knowledge gaps and emerging research needs Highlights novel methodologies and integrated research concepts Assesses ecological meaning of investigations and prioritizing research need
Forests provide many supporting, regulating and cultural services. Extensive environmental changes have resulted in a substantial loss or degradation of forest ecosystem services (ES). Unclear interactions of climate-change phenomena make it difficult to estimate forest ES. Research on interactive effects of climate change and air pollution has become a central issue in forest science during the past decade. Climate change in interaction with air pollution brings novel combinations of severity and timing of multiple stresses, which may significantly affect many forest ES. The aims of the present chapter are to identify basic concepts of evaluating ES with a focus on forest ES, to provide physiological and ecological bases for their evaluation, and to discuss the interactive effects of climate change and air pollution on forest ES based on selected tree physiological functions. Climate regulation mediated by deforestation-induced changes in the hydrological cycle is discussed. Adaptive governance and communication to the public promotes sustainable forest–multi-stakeholder collaboration. A case study is presented evaluating selected ES in a forest–agricultural landscape in the Czech Republic on the basis of monitored energy, water and material flows estimation. From this study, it is apparent that future research must include multi-factorial anthropogenic and natural interactions of climatic changes and air pollution in conjunction with sustainable forest ES provisions. Sustainable forest management is an essential tool for reducing the vulnerability of forests to environmental change.
Untangling the complex effects that different air pollution and climate change factors cause to forest ecosystems is challenging. Supersites, that is, comprehensive measurement sites where research and monitoring of the whole soil–plant–atmosphere system can be carried out, are suggested as a refinement of the current monitoring and research efforts in Europe. This chapter identifies and discusses key measurements to be carried out at such supersites, with a focus on four topical subjects: the carbon, nitrogen, ozone and water budgets. This kind of holistic approach is vital to a realistic translation of the ongoing changes in climate and air quality into research on the impacts on forest ecosystems. Such an integrated effort requires a considerable use of resources at highly instrumented measurement sites and can only be achieved by building on existing infrastructures.
A review of the current status of air pollution and climate change (CC) in the United States from a perspective of their impacts on forest ecosystems is provided. Ambient ozone (O3) and nitrogen (N) deposition have important and widespread ecological impacts in U.S. forests. Effects of sulphurous (S) air pollutants and other trace pollutants have significant ecological importance only at much smaller geographic scales. Complex interactive effects of air pollution and CC for selected future CC scenarios are reviewed. In addition, simulations of past, present, and future hydrologic, nutrient, and growth changes caused by interactive effects of air pollution and CC are described for two U.S. forest ecosystems. Impacts of O3, N deposition, and CC on growth and hydrology of mixed conifer forests in the San Bernardino Mountains in southern California were projected with the DayCent model. Effects of N deposition, CO2 fertilization, N deposition, and CC on northern hardwood forests at the Hubbard Brook Experimental Forest in New Hampshire were simulated with the PnET-BGC model. Projected changes in these forests can influence the provision of ecosystem services such as C sequestration and water supply. The extent of these effects will vary depending on the future intensity and extent of CC, air pollutant emission levels, the distribution of air pollution, and other factors such as drought, pest outbreaks, fire, etc. Our chapter ends with research and management recommendations intended to increase our ability to cope with uncertainties related to the future interactive effects of multiple air pollutants, atmospheric deposition, CC, and other biotic and abiotic stressors.
This chapter focuses on the ozone-affected transcriptional responses of juvenile and mature trees under controlled greenhouse and free-air exposure systems. Transcriptional changes are compared to proteomic and metabolite analyses, and short-term changes (acute exposure) to long-term effects (chronic exposure). Free-air exposure systems designed to scale up molecular studies of ozone responses in mature trees at the ecosystem level are reviewed. New technologies, for example, high-throughput methods that integrate genomics, transcriptomics, proteomics and metabolomics, contribute to a deeper insight into the physiological processes of forest trees that affect climate change. Therefore, integrated ‘omic’ analyses are important to understand tree responses to abiotic stress and/or global change at the biological system level.
This report contains the discussions and recommendations from a workshop held in Copenhagen 28-29 August 2008, where climate scientists and air pollution scientist from the Nordic countries were gathered to discuss the interaction between climate change, air pollution and related impacts.