Ascites refers to abnormal accumulation fluid in the abdominal (peritoneal) cavity. The most common cause of ascites is cirrhosis of the liver. Treatment of ascites depends on its underlying cause.
Ecosystem. A functional system that includes an ecological community of organisms together with the physical environment, interacting as a unit. Ecosystems are characterized by flow of energy through food webs, production and degradation of organic matter, and transformation and cycling of nutrient elements.
The CBD formulates the concept in the following definition: Ecosystem means a dynamic complex of plant, animal and micro-organism communities and their non-living environment interacting as a functional unit (Convention on the Biological Diversity, 1992).HE ECOSYSTEM CONCEPT There are many definitions for ecosystem. The definition of Christopherson (1997) seems quite workable, but so are quite a few others.