Terrestrial pollutants

Xem 1-20 trên 39 kết quả Terrestrial pollutants
  • The report describes the environmental status of the water bodies in 2004 as well as the trend in environmental quality over the period 1989–2004 in relation to changes in the pressures. In addition it de- scribes the monitoring of terrestrial natural habitats and species, in- cluding the first results of this monitoring, which was initiated in 2004.

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  • The state of aquatic ecosystems reflects the general state of the biosphere. The situation in the biosphere affected by anthropogenic factors was characterized as “a slow explosion” (Fedorov 1987). The global change in the biosphere and climatic system of the Earth is a manifestation of this “slow explosion” (World Resources 1990–1991, Izrael et al. 1992).

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  • Water contamination weakens or destroys natural ecosystems that support human health, food production, and biodiversity. Studies have estimated that the value of ecosystem services is double the gross national product of the global economy, and the role of freshwater ecosystems in purifying water and assimilating wastes has been valued at US$ 400 billion (2008$) (Costanza et al. 1997). Freshwater ecosystems are among the most degraded on the planet, and have suffered proportionately greater species and habitat losses than terrestrial or marine ecosystems (Revenga et al. 2000).

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  • Under certain conditions, lichen floristic and community analyses can be used in conjunction with measured levels of ambient or depositional pollutants accumulated by lichens to detect effects of changing air quality on vegetation. This information can demonstrate whether air pollutants cause undesirable changes in species composition or presence/absence of lichen species within terrestrial plant communities. It is important that any alternative hypotheses (e.g.

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  • From the early explorers onwards, visitors to the Arctic and to Antarctica have commented with great interest on the presence of lakes, wetlands, and fl owing waters. These environments encompass a spectacular range of conditions for aquatic life, from dilute surface melt ponds, to deep, highly stratifi ed, hypersaline lakes.

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  • It is important to understand at the outset the natural hydrochemical conditions that exist in aquifer systems, as these provide the necessary baseline from which quality changes caused by human impacts can be determined. The natural hydrochemical conditions may also affect the behaviour of some pollutants. Because groundwater movement is typically slow and residence times long, there is potential for interaction between the water and the rock material through which it passes.

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  • Clear the Air is a joint project of three leading air quality groups: the Clean Air Task Force, National Environmental Trust and U.S. PIRG Education Fund. The Clean Air Task Force is a non-profit organization dedicated to restoring clean air and healthy environments through scientific research, public education and legal advocacy. The National Environmental Trust was established in 1994 as a non-profit, non-partisan organization dedicated to applying modern communications and public education techniques to environmental education and advocacy. The U.S.

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  • In many countries, no comprehensive and coherent policy and legislation exists for water pollution control or for environmental protection (see Case Study XIII, Yemen). This does not prevent water pollution control from taking place before such policies have been formulated and adopted, but the most efficient and effective outcome of water pollution control is obtained within a framework of defined policies, plans and co-ordinating activities.

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  • Most of the concern about mercury focuses on lakes and other aquatic ecosystems, such as rivers, streams, wetlands and oceans. The levels of mercury found in terrestrial environments are usually not high enough to threaten the health of wildlife and humans. But some aquatic environments favour the transformation of mercury into its more poisonous form — methylmercury — and it is the bioac- cumulation of methylmercury in fish and marine mammals that presents a potential problem when they are consumed by humans.

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  • The objectives of the present paper are, first, to sketch the broad outlines of how writing skill develops across three stages, as a child matures and learns the craft of composition through late adolescence and into early adulthood. The first two - knowledge-telling and knowledge-transforming - are well documented. A third stage - knowledge crafting - is more speculative, but important for understanding expert or professional levels of writing skill.

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  • This document focuses on the batch manufacture of organic chemicals in multipurpose plants and addresses the manufacture of a wide range of organic chemicals although not all of them are explicitely named in ANNEX 1 of the Directive. The list is not conclusive but includes, e.g. dyes and pigments, plant health products and biocides, pharmaceutical products (chemical and biological processes), organic explosives, organic intermediates, specialised surfactants, flavours, fragrances, pheromones, plasticisers, vitamins, optical brighteners and flame- retardants.

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  • ROs should have published procedures which are readily accessible, both within the organisation and externally, for the normal supervision and management of research conduct, integrity and ethical issues, and for the repor ting by individuals of any concerns about poor practice in these areas.

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  • The AIFM Directive foresees a pan-European marketing regime that will become available to EU managers with EU funds in 2013, and may be available to non-EU managers and non-EU funds from 2015. Meanwhile, and for the upcoming seven years at least, national PPRs will remain available for the distribution in Europe of non-EU funds and to non-EU managers. However, individual Member States may impose stricter rules.

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  • The deferral of the mandatory IFRS changeover date to January 1, 2014 is to prevent Canadian investment companies and segregated accounts of life insurance enterprises from having to change their current accounting treatment for controlled investees while the IASB finalizes its proposed investment entities standard. Under IFRS 10 Consolidated Financial Statements, investment companies are required to consolidate their controlled investments.

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  • Applicants should identify themselves as unique and stress how their contribution to the business school setting will be distinctive, embracing points of difference as opposed to burying them in ad- missions essays. After all, the very things that make them different could be what scores them a seat in a desirable MBA program. Additionally, applicants should prepare themselves to adapt to changes in the dynamic MBA admissions process.

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  • Hedge Funds have grown quickly over the past ten years, and are important part of the financial landscape. They are difficult to define as entities, because the line between what hedge funds do that other institutions do not is blurred – proprietary traders in investment banks, private equity funds, and fund managers all use extensive leverage and derivatives to trade markets or to shift risks.

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  • Your employer may offer a group long-term care insurance plan or offer individual policies at a group discount. An increasing number of employers offer this benefit,16 especially since the passage of the Health Insurance Portability and Accountability Act (HIPAA). HIPAA allows employers the same type of federal tax benefit when they pay for their employees’ long- term care insurance as when they pay for their health insurance (except for Section 125 cafeteria plans). The employer-group plan may be similar to what you could buy in an individual policy.

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  • What the described event marks is a moment where an expectation is shattered: the composer, who expected to become a big success in the French capital, had his art rejected by one of the most important figures from the city’s artistic scene. An event such as this is criss-crossed by innumerable social vectors. On one hand, a foreign artist, fresh from the ‘periphery,’ a recent arrival in the great cultural centre of the period; on the other, a Parisian artist completely established and at home in his setting.

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  • However, the survey showed a divide between how financial professionals in the east and west spend their working hours. In the east, accounting operations take up the greatest portion of their time (25%), while in the west the balance shifts to management accounting as their biggest role (24%), on average. Time spent for management support is similar between the two groups (17% and 20%), although the accountants in the west report a greater focus here as part of their portfolio of roles.

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  • The problem of overweight affects more than 1 in 7 youth ages 6 to 17 (Flegal, et al., 2002; Ogden, et al., 2002). A number of factors contribute to this rising rate of childhood overweight; however, scientists and medical professionals agree that poor diet and lack of physical activity play some of the most important roles in children being overweight (Berkey, et al., 2000; Rowlands, et al., 1999). Sub-optimal levels of physical activity and poor ...

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