Mongolia's geographical location, extreme climate, fragile ecosystems, agricultural dependence on climate requires adaptation to global change and smart usage of natural resources. The water level most lakes in Mongolia had been steadily increasing from mid-1960s 1995 declining 1996. purpose this study is determine current condition by each ecosystem compartment around the Lake Duruutsagaan def...

THE HUGE THREE-GORGES DAM (TGD) OF THE Yangtze River is going to demonstrate the mighty power of humanity to change and fragment an area of about 58,000 km2 with the formation of a huge reservoir of 1080 km2. It is expected to exert disastrous influences on many terrestrial plants and animals, as discussed by J. Wu et al. in their Policy Forum “Three-Gorges Dam— experiment in habitat fragmentat...

Neary, Daniel G. ; Ryan, Kevin C. ; DeBano, Leonard F., eds. 2005. Wildland fire in ecosystems: effects of fire on soi ls and water. Gen. Tech. Rep. RMRS-GTR-42-vol.4. Ogden , UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 250 p. This state-of-knowledge review about the effects of fire on soils and water can assist land and fire managers with information on...

Advances in aquatic ecology can be broadly separated into two contrasting approaches, synthetic vs. incremental. Synthesists study rivers at a holistic level and typically describe important processes in relative terms from headwater to river mouth or across regions. Incrementalists typically quantify relationships of stream flow quantity and quality to fisheries response and are often constrai...

a r t i c l e i n f o The Upper Rio Chagres drains 414 km 2 of steep, mountainous terrain in central Panama. A tropical air mass thunderstorm on 10 July 2007 produced a flood across the basin that peaked at 720 m 3 s − 1 at a headwaters gage draining 17.5 km 2 and 1710 m 3 s − 1 at a downstream gage draining 414 km 2. The storm also triggered numerous landslides in the upper basin, which facili...

Estimating non-point source pollution from watersheds and the effects of mitigation measures (e.g. beneficial management practices or BMPs) is an important step in managing and protecting water quality, not only at the basin level where it originates, but also at the receiving waters such as reservoirs, lakes or oceans. Lake Winnipeg is a prime example of such land-lake interactions, where eutr...

limit of this book (1 January 1955) and the end of 1957 are included in special sections interspersed at relevant points in the text, and the results of more recent investigations are noted in footnotes. Following all of the systematic accounts an index of substrata is provided listing plants, animals, and organic substances together with the phyco-myceteous fungi associated with them. A biblio...

Scavia, D. and Park, R.A., 1976. Documentat ion of selected constructs and parameter values in the aquatic model CLEANER. Ecol. Modelling, 2: 33--58. Process representations critical to the phytoplankton and zooplankton submodels are described. These include constructs for: lightand nutrient-limitations and their interaction, temperature, consumption, and population-age structure. Values for ke...

Axolotls (Ambystoma mexicanum) are aquatic salamanders that are widely used in research. Axolotls have been bred in laboratories for nearly 150 years, yet little is known about the basic biology of reproduction in these animals. We investigated the effects of changing day length, time of year, and food availability on levels of circulating estradiol and androgens in adult female and male axolot...