A lake with clear water can certainly support many organisms: both aquatic and terrestrial. There are only specialized aquatic species that can grow in salt water/ocean but most species want sweet/soft water for their sustenance. Clearness of the water
is an indication that it is soft, devoid of impurities and therefore, such lake would support life.
The area showing meadow might have gone through primary and secondary succession, it could have been a dense forest or grassland as well. It would depend on surroundings.
The area has the potential to support life and therefore, it is likely to be populated by either wild species or human habitat. However, a natural catastrophe or human invasion (war) might change its fate.
Hope this helps.