Coastal waters

The Baltic Sea is one of the most investigated water bodies in the world. For decades, the many highly industrialised nations around the Baltic have financed basic and applied investigations, as well as the building and development of research stations and vessels. After World War II, research in the Baltic Proper was intensified and investigations became much more international. The main goals of such investigations were analysis of the eutrophication and pollution of the Baltic Sea, and development of mitigating strategies (e.g. the HELCOM-Program).

0p phoebe75 01-02-2013 25 6   Download

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa hoc quốc tế đề tài : Vertical migration of phytoplankton in coastal waters with different UVR transparency

14p dauphong11 06-02-2012 16 4   Download

Society uses water to generate and sustain economic growth and prosperity, through activities such as farm- ing, commercial fi shing, energy production, manufactur- ing, transport and tourism. Water is important in deciding where we settle and how we use land. Water can also be a source of geo-political confl icts – in particular where water shortages occur. For our own well-being, not only clean drinking water but also clean water for hygiene and sanitation is crucial.

0p yeutinh98 26-09-2012 26 2   Download

This paper identifies five water environmental problems in the Delta that are the principal limiting factors of agricultural production and human health, i.e. (i) the salinity intrusion in the coastal areas, (ii) the effect of acid sulfate soils, (iii) the polluted water from human activities, (iv) the fresh water shortage in the dry season and (v) the flood in the rainy season. The discussion and conclusion present the people’s adaption strategies and water gorvernance issues in pursing sustainable management in the region.......

0p haivan 16-03-2009 168 34   Download

Late in the year 1970, a major turning point occurred in my scientific career: I joined the staff of a federal fisheries research center at Sandy Hook, New Jersey. One of the principal programs of that center was to examine the effects of coastal pollution on productive systems of the oceans, especially effects on fish and shellfish resources.

267p 951628473 07-05-2012 57 17   Download

About 70% of the world’s population dwells in coastal zones. With the economic and population growth, the shortage in freshwater supply becomes increasingly acute. With surface water more and more depleted and polluted, coastal communities have turned to groundwater to make up for the shortfall. For domestic supply purposes, the percentage of groundwater use has increased to more than 40% on a worldwide basis.

282p crazy_sms 10-05-2012 41 10   Download

Water is an important natural resource which forms the core of the ecological system. Human use of water depends on ambient water quality and human alterations of the landuse have an extensive influence on water quality. Water is typically referred to as polluted when its quality is adversely affected by contaminants and undergoes a marked shift in its capability to support the biological communities. The book is written for research scholars, hydrologists and environmentalists and especially students....

114p haiduong_1 24-04-2013 38 10   Download

The main objective of the project is to develop and expand clam technology (production of seeds and livestock) to sustain the livelihoods of poor farmers in coastal North Central Province and develop a management strategy contributes sustainable water use clam aquaculture to improve the use of wastewater tomtrang camp. Significant progress has been made in this section. Key findings are listed below.

33p xau_la 10-02-2012 31 6   Download

The main objective of the project is to develop and expand technology clam (breeding and seed production) to maintain the livelihood of poor farmers in northern coastal The central provinces and develop a strategy to contribute sustainable fisheries environmental management by using clam aquaculture to improve shrimp farm effluent to use. In the first half of the second year, two production test clam (producing intertidal clam, clam production in the pond is crop rotation) and the parent test has been completed successfully....

37p xau_la 10-02-2012 26 5   Download

Water conservation encompasses the policies, strategies and activities to manage fresh water as a sustainable resource to protect the water environment and to meet current and future human demand. Population, household size and growth and affluence all affect how much water is used. Factors such as climate change will increase pressures on natural water resources especially in manufacturing and agricultural irrigation.

8p thachanhtim_18 08-08-2013 38 4   Download

Nitrogen contamination may come from a variety of sources: municipal sewage, animal manure, atmospheric deposition, biological N fixation, soil organic N, and/or nitrogen fertilizers. The consequences of contamination in a specific water body will depend upon the amount of contamination from all sources and characteristics of the receiving waters. Shallow rivers, wetlands, lakes, and reservoirs, have some capacity to remove nitrogen by microbial denitrification.

12p tainhacmienphi 19-02-2013 21 3   Download

This lab uses freshwater sponges as model organisms to examine the biological effects of water pollution. Specifically, the focus of this laboratory module is on the effects that chemicals of environmental concern (e.g., endocrine disrupters) have on sponge growth and development. Contamination of aquatic ecosystems is a serious issue in environmental science. Identifying which chemicals we should be concerned with, and determining the consequences of contamination by specific compounds, is a major area of current research.

5p tainhacmienphi 19-02-2013 24 3   Download

In 1972, the Clean Water Act (CWA) delineated the basic structure for regulating discharges of pollutants into waters and for establishing quality standards for surface waters under the authority of EPA [10]. Under the CWA’s National Pollutant Discharge Elimination System program, stormwater permits were required for sediment runoff from construction sites and discharges of pollutants into surface waters [11]. The permitting system requires adoption of technology-based and water quality-based effluent limits [11,12].

10p tainhacmienphi 19-02-2013 19 3   Download

Cua Viet is the Thach Han river’s mouth. It is quite big estuary that is located in the central coastal province of Quang Tri. In which, Cua Viet port plays an important role for water transport and commerce of the province. In recent years, accretion and erosion have occurred increasingly in term of scale and intensity. In addition, estuarine access channels suffer severely from sedimentation.

9p tinhluong123 21-11-2015 10 2   Download

The question of the origin of water on Earth, or the question of why there is clearly more water on the Earth than on the other planets of the Solar System, has not been clarified. There are several acknowledged theories as to how the world's oceans were formed over the past 4.6 billion years.

138p thienbinh1311 13-12-2012 15 1   Download

The litho-hydrodynamic and environmental conditions in the Vietnamese coastal estuarine basin are significantly affected by the land-ocean-atmosphere interaction processes whish tide has a determining role. Application of the coupled 1D, 2D and 3D modeling system could resolve this complicated problem but it requires other solutions related with the boundary and coupling conditions.

6p tinhluong123 21-11-2015 8 1   Download

Phân tích những đặc điểm chính của chu trình sinh địa hóa vật chất trong vùng biển ven bờ Việt Nam trong đó thảo luận về sự biến đổi theo không gian và thời gian của các yếu tố hàm lượng sắc tố thực vật nổi năng suất sinh học dinh dưỡng nito và phospho

10p hanhnguyen72 29-10-2009 208 74   Download

The main objective of the project is to develop and expand clam technology (production of seeds and livestock) to sustain the livelihoods of poor farmers in coastal North Central Province and develop a management strategy contributes sustainable water use clam aquaculture farms to improve water use thai.Trong tomtrang six months, the focus of the project is focused in the following two aspects. (1) Prepare and create favorable conditions for the agreement between stakeholders and research organizations to carry out 'on farm trials.

42p xau_la 10-02-2012 26 10   Download

If better management (BMP) was adopted in Vietnam there is evidence that the current trends and past environmental degradation can be stopped and even reversed, and shrimp production efficiency can be increased.

14p xau_la 10-02-2012 46 9   Download

A modern hatchery for clams (M. lyrata) spat production has been established at the Aquaculture Research Institute of the North Central Division (ARSINC) with all necessary infrastructure. A lot of the success of oyster spats have been produced using these facilities. Hatcheries can be used for commercial production of both controversy and research and development.

11p xau_la 10-02-2012 34 7   Download