Modeling the Responses of Dissolved Oxygen and Nitrate Concentrations due to Land Use and Land Cover Change Scenarios in a Large Subtropical Reservoir

This is a Preprint and has not been peer reviewed. This is version 2 of this Preprint.


Download Preprint


Carolina Cerqueira Barbosa , Maria do Carmo Calijuri , Phelipe da Silva Anjinho , André Cordeiro Alves dos Santos 


Itupararanga reservoir is a large reservoir built in the Southeast of Brazil to support multiple uses, mainly hydropower generation and drinking water supply for almost 1 million people. We applied a process-based biogeochemical model and a distributed basin load model to assess the responses of dissolved oxygen and nitrate concentrations in the Itupararanga reservoir based on three land use and land cover (LULC) scenarios. The proposed LULC management actions resulted in a set of diverse ecosystem responses of the Itupararanga reservoir and the biogeochemical model highlighted the impact of allochthonous nutrient loads on reservoir water quality conditions, as well as the overall low biogeochemical turnover in the Itupararanga reservoir. The proposed modeling framework is a coupling of open science tools, which can be used to estimate future changes in the water quality of standing freshwater bodies due to likely changes in the land use and land cover in watersheds.



Biochemistry, Environmental Engineering, Terrestrial and Aquatic Ecology


land use and land cover changes, GLM-AED2, Lake Ecosystem modeling.


Published: 2021-09-15 00:40

Last Updated: 2022-01-11 12:01

Older Versions

CC BY Attribution 4.0 International

Additional Metadata

Conflict of interest statement:

Add a Comment

You must log in to post a comment.


There are no comments or no comments have been made public for this article.