Using isotopic techniques to investigate soil erosion processes

Claude Bernard, associate researcher

Claude Bernard

Associate Researcher, Ph.D.

418 643-2380
ext 406

Contact Claude Bernard

Description

Soil displacement and net production of sediments from fields with different soil textures in the Ruisseau Ewing watershed and Rivière aux Brochets subwatershed can be quantified by measuring the spatial redistribution of 137Cs and 210Pb. The 13C signature of suspended solids (SS) can be compared with that of potential SS sources (cultivated fields, meadows, woods, river banks) to quantify the relative contribution of these sources to SS loads. This study is one of a series of projects conducted by IRDA and its partners in the Missisquoi Bay watershed in recent years.

Objective(s)

  • Quantify the scale of soil displacement and net sediment production in the past 50 years for various soil textures and compare these results with those generated by modeling the watershed with SWAT
  • Examine the relationship between soil displacement and runoff patterns and the contribution of subsurface drainage to the export of suspended solids
  • Evaluate the relative contribution of various forms of land use in the watershed to suspended solid loads measured at the watershed outfall and compare it to that predicted by the SWAT model

From 2017 to 2021

Project duration

Soil health, Water protection

Services

This approach will help to reduce the diffuse pollution caused by farming activities.

Partner

Atomic Energy Agency

Publications

This may interest you

2016-2017

Monitoring and modeling of the Lac Boivin watershed, Granby, Québec

The project consisted of monitoring the hydrology of the main watercourses flowing into Lac Boivin to determine their flow rates and sediment, nitrogen, and phosphorus inputs to the lake.

Read more about the project

Aubert Michaud, retraité
2016-2017

Field tests on the potential of pelleted grocery fruit and vegetable waste as fertilizer and animal feed

The purpose of this project was to field-test pelleted grocery fruit and vegetable waste as a fertilizer or high-carbon soil amendment.

Researcher: Christine Landry

Read more about the project

Christine Landry
2014-2017

Hydrological monitoring of the Campbell Stream greening project

The team at IRDA conducted hydrological monitoring on Branch 1 of the Campbell Stream (test basin) as well as the stream’s main branch, which was used as a control.

Read more about the project

Aubert Michaud, retraité