| Title |
Analysis on the Relationship between Biological Indices and Survey Area of Benthic Macroinvertebrates Using Mathematical Model |
| Authors |
공동수 ( Dongsoo Kong ) ; 김아름 ( Ah Reum Kim ) |
| DOI |
https://doi.org/10.15681/KSWE.2015.31.6.610 |
| Keywords |
Benthic macroinvertebrates; Biological index; Habitat heterogeneity; Sample size; Survey area |
| Abstract |
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. |