Analysis on the Relationship between Biological Indices and Survey Area of Benthic Macroinvertebrates Using Mathematical Model

수학적 모형을 이용한 저서성 대형무척추동물 군집지수-조사면적 관계 해석

Kong, Dongsoo;Kim, Ah Reum

  • Received : 2015.08.18
  • Accepted : 2015.10.08
  • Published : 2015.11.30


This study was conducted to find out the influence of sample size (accumulated survey areas) on the seven biological indices of benthic macroinvertebrates. BMI, the index similar to Zeilika-Marvan’s saprobic index, tended to be independent on the variations of sample size. The other indices (Shannon-Weaver’s diversity, Margalef’s richness, Menhinick’s richness, Pielou’s evenness, and Lenat’s EPT index) showed the considerable variations along with the increase of sample size and environmental conditions. To get the appropriate index values, it should be sampled at least 6 replicates more based on 30×30cm Surber sampler. In addition, the habitat heterogeneity index of benthic macroinvertebrates suggested in this study, it will be able to be used for evaluating the heterogeneity of habitats.


Benthic macroinvertebrates;Biological index;Habitat heterogeneity;Sample size;Survey area


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