A lot ofvwater ways and watery connections are gone due to ditching out mosses and marschlands. And some waterways have grown over in bogs and swamps. If one look at older maps one can often see connections between lakes not seen today. Only in Sweden 6000 lakes and ponds are gone since the beginning of the 20th century.
I don't know about this idea of mine but might there be older cultures planting fishes in lakes for future fishing?
Metaphant t1_isnu5is wrote
Reply to How do fishes get into isolated inland lakes in the first place? and why don't we see more divergent evolution / speciation given the separation of each group of fishes from each other? by I-mean-Literally
A lot ofvwater ways and watery connections are gone due to ditching out mosses and marschlands. And some waterways have grown over in bogs and swamps. If one look at older maps one can often see connections between lakes not seen today. Only in Sweden 6000 lakes and ponds are gone since the beginning of the 20th century.
I don't know about this idea of mine but might there be older cultures planting fishes in lakes for future fishing?