Effect of rainfall runoff from agricultural areas and seasonal crop practices on zooplankton community in Pampean streams, Argentina

Extreme climatic events are considered one of the main consequences of climate change. In the Pampas region, Argentina, an intensification of rainfall is expected during the periods of maximum agrochemical application. This study assesses the main factors determining the zooplankton community attrib...

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Bibliographic Details
Published in:Environmental science and pollution research international 2022-06, Vol.29 (27), p.41713-41724
Main Authors: Andrade, Victoria Soledad, Gutierrez, María Florencia, Gagneten, Ana María
Format: Article
Language:English
Subjects:
Agricultural runoff
Agriculture
Agrochemicals
Animals
Aquatic Pollution
Argentina
Atmospheric Protection/Air Quality Control/Air Pollution
Biochemical oxygen demand
Climate change
Community composition
Composition
Corn
Crops
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental Monitoring
Environmental science
Eutrophication
Flowering
Oxygen demand
Pampas
Plankton
Rainfall
Rainfall-runoff relationships
Research Article
Runoff
Seasons
Soybeans
Streams
Turbidity
Waste Water Technology
Water Management
Water Pollution Control
Water quality
Zooplankton
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Summary:Extreme climatic events are considered one of the main consequences of climate change. In the Pampas region, Argentina, an intensification of rainfall is expected during the periods of maximum agrochemical application. This study assesses the main factors determining the zooplankton community attributes in three streams belonging to the agricultural Pampas region, Argentina, and the effect of rainfall and seasonal crop practices on the zooplankton community composition. Sampling campaigns were performed before and after three rainfall events during two seasonal crop practices: (1) soybean chemical fallow-sowing and corn vegetative growth-flowering, (2) soybean vegetative growth-grain filling and corn sowing. The runoff in agricultural areas affected the zooplankton community attributes and composition. The biological oxygen demand, turbidity, and conductivity were the main water quality variables affecting the zooplankton community attributes. The increase of these variables after rainfall or during pre-emergence crop practices favoured the zooplankton groups most tolerant to eutrophication such as Bdelloidea, Chydoridae, Moinidae, and Sididae. Factors such as rainfall and seasonal crop practices must be considered in environmental monitoring design.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-021-18417-y