| Title |
Development of Lakes Benthic Macroinvertebrate-based Multi-metric Index (LBMMI) for Biological Integrity Assessment of Korean Lake |
| Authors |
박근용 ( Geun-yong Park ) , 김명철 ( Myoung-chul Kim ) , 공동수 ( Dongsoo Kong ) |
| DOI |
https://doi.org/10.15681/KSWE.2024.40.5.243 |
| Keywords |
Benthic macroinvertebrates; Biological assessment; Lakes ecological integrity assessment; Multi-metric index; Water quality |
| Abstract |
Although lakes are an important part of freshwater, research on biological methods for assessing ecological integrity of Korean lakes is insufficient. Therefore, this study aimed to develop Lakes Benthic Macroinvertebrates Multi-Metric Index (LBMMI) to assess the ecological integrity of lakes in Korea to further understand Korean lake’s ecosystem. We used biological data from 388 sampling units of national lake monitoring programs from 2022 to 2023 and water quality data from Water Environment Information System (WEIS). As a result, firstly, reference points and disturbed points were selected through Principal Component Analysis (PCA). Secondly, six core metric elements (Pielou’s Evenness index (J), Total number of taxa (To.t), Percent of taxa in insecta (% I.t), Percent of individuals in Oligochaeta and chironomidae(tuble) (% OliCht.i), Percent of taxa in Predator (% Pe.t), and Percent of taxa in Clingers (% CL.t) were selected through discriminant analysis and relationship-test. Lastly, LBMMI was calculated for each sampling point by scoring using core metric elements and five grades were assigned for LBMMI scores using a Beta probability distribution model, with the suitability of LBMMI reviewed by comparing it with TSIKO. LBMMI developed in this study is expected to appropriately assess ecological integrity of Korean lakes and provide a basis for further research on lake environment conservation. |