virtual population
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Virtual population analysis — (VPA) is a modeling technique commonly used in fisheries science for reconstructing historical fish numbers at age using information on death of individuals each year. This death is usually partitioned into catch by fisheries and natural… … Wikipedia
virtual population analysis — A mathematical modelling technique used in stock assessment, whereby the number of fish in each cohort is estimated from numbers in the next oldest or next youngest age group, adjusted for the changes due to fishing and natural mortality; see… … Fisheries — dictionary
virtual population — Utilized stock … Fisheries — dictionary
virtual population analysis — an algorithm for computing historical fishing mortality rates and stock sizes by age or length, based on data on catches, natural mortality, and certain assumptions about mortality for the last year and last age group. Essentially reconstructs… … Dictionary of ichthyology
Population dynamics of fisheries — A fishery is an area with an associated fish or aquatic population which is harvested for its commercial or recreational value. Fisheries can be wild or farmed. Population dynamics describes the ways in which a given population grows and shrinks… … Wikipedia
Population genetics — is the study of the allele frequency distribution and change under the influence of the four evolutionary forces: natural selection, genetic drift, mutation and gene flow. It also takes account of population subdivision and population structure… … Wikipedia
Virtual colonoscopy — Intervention MeSH D023881 Virtual colonoscopy (VC, also called CT Colonography) is a medical imaging procedure which uses x rays and computers to produce two and … Wikipedia
Population transfer — is the movement of a large group of people from one region to another by state policy or international authority, most frequently on the basis of ethnicity or religion. Banishment or exile is a similar process, but is forcibly applied to… … Wikipedia
Population dynamics — is the branch of life sciences that studies short term and long term changes in the size and age composition of populations, and the biological and environmental processes influencing those changes. Population dynamics deals with the way… … Wikipedia
virtual community — a group of people, who may or may not meet one another face to face, who exchange words and ideas through the mediation of computer bulletin board systems (bulletin board system) (BBSs) and other digital networks. The first use of the … Universalium
