| Title |
Evaluation of Habitat Suitability Based on Altitudinal Gradient for Four Species of the Caddisfly Genus Hydropsyche (Trichoptera: Hydropsychidae) Using Probability Distribution Models |
| Authors |
김륜미 ( Ryunmi Kim ) , 박선진 ( Sun-jin Park ) , 공동수 ( Dongsoo Kong ) |
| DOI |
https://doi.org/10.15681/KSWE.2024.40.6.279 |
| Keywords |
Altitudinal distribution; Habitat suitability index; Hydropsyche; Thermality |
| Abstract |
Distribution characteristics of four species (Hydropsyche kozhantschikovi, H. orientalis, H. valvata, H. formosana) of the caddisfly genus Hydropsyche (Trichoptera: Hydropsychidae) along with altitudinal gradient were analyzed with Probability Distribution Models (Exponential, Normal, Lognormal, Logistic, Weibull, Gamma, Beta, Gumbel) based on data collected from 25,370 sampling units of 3,695 sites from 2010 to 2021 in Korea. Inverted Weibull distribution model showed the best-fit for negatively skewed H. kozhantschikovi and H. orientalis and positively skewed H. valvata. Gamma distribution model showed the best-fit for positively skewed H. formosana. H. kozhantschikovi was distributed at an altitude range of 1 m to 849 m. H. orientalis was distributed at 1 m ~ 871 m. H. valvata was distributed at 3 m to 849 m and H. formosana was distributed at 12 m to 626 m. Altitudinal habitat suitability range was estimated to be 242 m to 574 m for H. kozhantschikovi, 500 m to 793 m for H. orientalis, 174 m to 485 m for H. valvata, and 137 m to 272 m for H. formosana. Results of altitudinal spectrum of suitability and altitude-related temperature revealed that H. formosana was thermophilic, H. kozhantschikovi and H. valvata were mesophilic, and H. orientalis was thermophobic. This is the first national-scale evaluation on altitudinal distribution of Hydropsyche in Korea. Results will be available in a further research study on altitudinal shift in species of Hydropsyche under climate change in the future. |