inland water ecosystem — ▪ biology Introduction complex of living organisms in free water on continental landmasses. Inland waters represent parts of the biosphere within which marked biological diversity, complex biogeochemical pathways, and an array of… … Universalium
marine ecosystem — Introduction complex of living organisms in the ocean environment. Marine waters cover two thirds of the surface of the Earth. In some places the ocean is deeper than Mount Everest is high; for example, the Mariana Trench and the… … Universalium
lacustrine ecosystem — also called still water ecosystem or lentic ecosystem any pond or lake viewed as an ecosystem. A riverine, or lotic, ecosystem, by contrast, has flowing water e.g., a river or a stream. Ponds are relatively shallow, with… … Universalium
Kobuk River — The Kobuk River is approximately convert|280|mi|km|0|lk=on long, located in the Arctic region of northwestern Alaska in the United States. [USGS Geographic Names Information System (GNIS). [http://geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO… … Wikipedia
Flowerhorn — Taxobox name = Flowerhorn image width = 240px image caption = a flowerhorn, a hybrid cichlid. regnum = Animalia phylum = Chordata classis = Actinopterygii ordo = Perciformes familia = Cichlidae genus = Intergeneric hybrid The Flowerhorn, also… … Wikipedia
Emiquon Project — The Emiquon Project is a 7,100 acre (28.7 km²) wetland conservation project located in Fulton County, Illinois across the Illinois River from the town of Havana. The project is owned and operated by the Nature Conservancy.HistoryThe Emiquon… … Wikipedia
Dinosaur Provincial Park — ▪ park, Alberta, Canada public park located in the badlands (badland) of southeastern Alberta, Canada. The nearly 29 square mile (75 square km) park is best known for its extensive fossil beds, within which have been identified some 35 different… … Universalium
Wetland — For other uses, see Wetland (disambiguation). The Florida Everglades massive wetland system in the United States saw 1.7 billion gallons of fresh water flushed from it daily and pumped into the ocean following one of the most successive water… … Wikipedia
River — For other uses, see River (disambiguation). The Tigris River near Hasankeyf, in southeastern Turkey … Wikipedia
Human impacts on the nitrogen cycle — Agricultural and industrial nitrogen (N) inputs to the environment currently exceed inputs from natural N fixation (Galloway 2003). As a consequence of anthropogenic inputs, the global nitrogen cycle (Fig. 1) has been significantly altered over… … Wikipedia
