Detecting the human impacts on riverine systems is challenging because of diverse biological, chemical, hydrological and geophysical components that must be assessed. A long history alteration has ensured there are few Asian rivers in pristine condition many a damaged state. Although have been studies ecological effect pollution Rivers, conducted Indonesia. Many previous demonstrated type land use affected water quality aquatic organisms river, but most these were temperate regions particularly Europe much less known about relationships between river tropical areas developing countries. This study attempts to determine impact non-point fish community Logawa River, Central Java, The comes mainly from agricultural settlements, which predominant surrounding areas. research was during two wet seasons (September 2000 – February 2002) 30 sites surrounded by five different types use: Agricultural (Aa), & settlements (Aahs), Human (Hs), (Hsaa) Secondary forest (Sfaa). Fish collected three methods (seine net; electric fishing combined both methods) 23 physico-chemical biological parameters measured each sampling site.

This revised edition fills the need for an up-to-date comprehensive book on biological aspects of bacterial taxa which cause disease in fish. Since 3rd was published 1999, much has changed control farmed and wild analyses all new information, including that pathogens developments long established diseases, such as furunculosis vibriosis. Consideration is given to have at some time been reported fish pathogens, whether they are secondary invaders already damaged tissue or serious, primary pathogens.