Freshwater Ecology (Limnology):
• Rivers:
o Habitat assessment
o Flow- and discharge rate determination
o Water quality assessment
o Macrobenthos and Index of Biotic Integrity
• Lakes:
o Vertical light, temperature, and oxygen profiles
o Plankton counts and biodiversity analyses
o Macrophyte surveys and mapping
More supported methods can be found in the textbook Field Ecology that I co-authored with my colleague Michael Muehlenberg: https://link.springer.com/book/9783031875465