Buscar
Estás en modo de exploración. debe iniciar sesión para usar MEMORY

   Inicia sesión para empezar

level: Measuring Biodiversity

Questions and Answers List

level questions: Measuring Biodiversity

QuestionAnswer
Species RichnessNumber of species counted in a sampling process
Strengths and Limitations of species richnessStrengths: - Total no. of species; large no. indicates higher biodiversity Limitations: - No indication of how common a single species is - Does not consider the evenness of species
Relative species abundance/evennessNumber of each species counted in proportion to other species sampled: one species in relation to the total population
Strengths and Limitations of species evennessStrengths: - Dominance of a species can be identified (how common a species is) Limitations: - Does not account for size of individuals (hard to distinguish different species when they're very small) - No indication of the distribution of a species over the area
Percentage CoverUsed to determine the percentage of each quadrat a species occupies. Useful for small organisms, plants and canopy covers.
Percentage FrequencyPercentage of quadrats in which a species is found. This is useful since it considers both evenness of a species' distribution, as well as abundance
Random SamplingProcess of unbias quadrat throwing
Simpson's Diversity IndexIndex for calculating biodiversity in an ecosystem - combines all techniques