🦠🎨

#colourful growth #biological crust #microbial mat #pattern #bioindicator #lichen texture

✨💧🦗

#indicator species #water quality #clean water insect #bioindicator #healthy stream

✨💧насекомое

#plecoptera #stonefly #water quality #indicator species #clean water #bioindicator #aquatic insect #entomology