The EU Water Framework Directive (2000/60/EC) is probably the most significant
legislative instrument in the water field that was introduced on an international basis
for many years. It moves towards integrated environmental management with key
objectives to prevent any further deterioration of water bodies, and protect and enhance
the status of aquatic ecosystems and associated wetlands. It aims to promote sustainable
water consumption and will contribute to mitigating the effects of floods and droughts.
Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí yhọc Wertheim cung cấp cho các bạn kiến thức về ngành y đề tài: Ethnomedicinal and ecological status of plants in Garhwal Himalaya, India...
The 8th International Congress of Ecology was held in Seoul, South Korea in
August 2002, and was hosted by the Ecological Society of Korea. The Congress
theme was 'Ecological Issues in a Changing World', and this volume includes
selected contributions to illustrate some of the important topics which were
discussed during the Congress.
Problems of scale have exercised the minds of ecologists for many years, and
will continue to do so into the future. This volume deals with this subject and with
mathematical approaches to improve our understanding of complex ecological
Agroecology encompasses not only aspects of ecology and agriculture, but the
ecology of sustainable food production systems, including the technology and
related societal and cultural values (e.g. Gliessman 1998; Altieri and Hecht 1990;
Altieri 1989, 1987, 1983) to better promote healthy and functional environments for
a sustainable quality of life (see also Castillo et al. 2005). To provide effective com
munication regarding the status and advances in this burgeoning field, connections
must be established with many disciplines including (but not limited to)...
Appendix A: Current Status of Biodiversity in North America
Every continent has its own wonderful biological diversity, and North America is no exception. Our continent has certainly undergone many changes at the hands of humans, but even today, large portions of the landscape still remain in natural or seminatural conditions.
Mining wastes can cause significant ecological destruction.
Often, solid mine wastes are dumped into streams,
destroying habitat and causing siltation and heavy metal
and other contamination. Even when such wastes are
stored out of water channels, trace materials can leach into
surface waters and infiltrate into local groundwater. Fine-
grained tailings can wash into local waterways and degrade
streams by covering and filling coarser-grained substrates.
There are 4 million miles of roads in the United States. One hundred
years ago, roads were primarily unpaved and had half the number of
miles of the present U.S. road system. As the system grew, roads became
wider and more complex structurally to provide for more and heavier
traffic. New construction technology and greater structural stability
were needed to improve the road system.
All phases of road development—from construction and use by vehicles
to maintenance—affect physical and chemical soil conditions, water
flow, and air and water quality.
The world ocean has somewhere between 10 000 and 100 000 seamounts more than 1 km
tall and as many as 1 000 000 features over 100 m tall. These are some of the least understood
habitats on the planet. Large seamounts, particularly those close to or within the
photic zone, support and attract rich biotic communities and are important for the status
of marine food webs and biodiversity. Intensive boom-and-bust fi sheries have depleted
fi sh populations and damaged or destroyed associated benthic communities.
SRH programs can help improve the nutritional status of women and their
children and advance progress on the hunger and maternal and child health
targets. Supplemental feeding programs for pregnant women, improving wom-
en’s knowledge of the nutritional requirements of themselves and their children
and increasing women’s power to negotiate access to needed nutrition must
be part of a multi-intervention strategy. Closely spaced pregnancies and the
associated high fertility levels place women at an increased risk of anemia and
other conditions of absolute and relative malnutrition.
convenience. He for his part is then prepared to adapt to the needs of the biogas plant.
Biogas plants are appropriate to the technical abilities and economic capacity of Third World
farmers. Biogas technology is extremely appropriate to the ecological and economic demands of
the future. Biogas technology is progressive.
However, a biogas plant seldom meets the owner's need for status and recognition. Biogas
technology has a poor image ("Biogas plants are built by dreamers for poor people". If you do not
want to seem one of the poor, you do not buy a biogas plant.
Soil fertility describes soil nutrient status and the factors controlling the supply of
nutrients to plants. Continued efforts to improve soil fertility are required to support
the world's growing demand for food, fiber, and renewable fuels. Important ecological
services provided by soils, such as biodiversity, buffering capacity, and nutrient
recycling benefit from the amendments applied to sustain soil fertility. Those
amendments need to be applied in a manner that is both economical and practical for
the producer to achieve agronomic objectives that are environmentally sound.
T he impetus to produce this book came in a brief
phone call in 1998. Chuck Crumly, of Academic
Press, called with an invitation and a deadline. Either
The Ecology of Fishes on Coral Reefs, published in
1991, would be allowed to lapse into out-of-print status,
or I would agree to produce a second edition. Looking
back on all the work, I suspect it might have been
wiser to say, "Let her lapse." But I didn't.
This report continues the story from the project’s first publication, Growing Up in North America:
Child Well-Being in Canada, the United States, and Mexico, and presents an overview of the
health and safety of children in North America. It is based on the ecological indicator model that
was developed for the Children in North America Project.