Accuracy of methods for field assessment of rill and ephemeral gully erosion

This work was possible by the financial support of: a) the Department of Education and Culture of the Government of Navarre, with a graduate and postdoctoral fellowship awarded to the fourth author; b) by the financial support of the Department of Education and Culture of the Government of Navarre, through the Research Project Characterization of soil erosion in cultivated areas of Navarra; c) by the financial support of the Spanish Ministry of Science and Technology, through the Research Project REN2003-03028/HID. This material is based upon work supported by the U. S. Department of Agriculture, under Agreement No. 58-6408-0-F137.

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