2024 Volume 80 Issue 26 Article ID: 24-26008
The invasive alien diatom Cymbella janischii can cause nuisance blooms in invaded rivers, concerning about its impact on the ecosystem, including damage to fish populationsand, not only spoil the scenery of the river. In this study, we used Maxent software to formulate a model for predicting the distribution of target diatoms in the upper reaches of the Chikugo River based on geographical factors, such as vegetation map, slope, and land use area. The probability of C. janischii occurrence was found to increase with the degree of slope and amount of surrounding land used for buildings. The surface geology was most affected by sand and gravel, followed by andesite; however, this may be due to bias and should be treated with caution. Further field surveys are required to improve the accuracy of the results.
