Sugarcane cultivation as a major surface source of sediment in catchments from a coastal zone of Pernambuco, Brazil

A - Papers appearing in refereed journals

Nascimento, R. C., Maia, A. J., Santos de Oliveira, P. H., Agra Bezerra da Silva, Y. J., Williams Araujo do Nascimento, C., Tiecher,T. and Collins, A. L. 2024. Sugarcane cultivation as a major surface source of sediment in catchments from a coastal zone of Pernambuco, Brazil. Revista Brasileira de Ciencia do Solo. 48, p. e0230136. https://doi.org/10.36783/18069657rbcs20230136

AuthorsNascimento, R. C., Maia, A. J., Santos de Oliveira, P. H., Agra Bezerra da Silva, Y. J., Williams Araujo do Nascimento, C., Tiecher,T. and Collins, A. L.
Abstract

Identifying sediment sources is fundamental for protecting and improving soil and water quality. Conventional fingerprinting studies have often collected sediments at the overall watershed outlet only, resulting in an important spatial scale dependency. This study aimed to identify and to assess the delivery patterns of sediment sources within three priority sub-catchments (Sapocaji, Piedade and Minas) located in the downstream portion of the Ipojuca River watershed in Brazil. This research would build on understanding sediment sources in the studied watershed by elucidating source type
contributions on a sub-catchment basis. Both bed and suspended sediment samples were collected in these sub-catchments, and two types of sources were sampled: surface and subsurface sources. A total of 21 geochemical tracers were measured. The tracers were evaluated for their conservation and discriminatory ability (Kruskal-Wallis test and linear discriminant analysis), and the best set of tracers was selected for source apportionment modeling using MixSIAR. Surface (i.e., sugarcane croplands) sources contributed the highest to suspended sediments in the Piedade and Minas sub-catchments. There was a difference in the quality of riverbank management, which helped explain contrasts in the importance of this source. Overall, sub-catchment-specific sediment control management measures, such as the revegetation of riparian forests, need to be implemented, mainly in the Sapocaji sub-catchment. These results underscore the importance of connectivity for surface source contributions.

KeywordsWatershed management; Erosion; Hydrology; Sediment fingerprinting
Year of Publication2024
JournalRevista Brasileira de Ciencia do Solo
Journal citation48, p. e0230136
Digital Object Identifier (DOI)https://doi.org/10.36783/18069657rbcs20230136
Web address (URL)file:///C:/Users/tookek/AppData/Local/Microsoft/Windows/INetCache/Content.Outlook/ML6II1I1/Nascimento%20et%20al%20Brazilian%20J%20Soil%20Science%202024%20(002).pdf
Open accessPublished as ‘gold’ (paid) open access
FunderBiotechnology and Biological Sciences Research Council
National Council and Technological Development (CNPq)
Funder project or codeResilient Farming Futures
Research productivity scholarships (Process Number: 303323/2022-1
Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco (FACEPE)
Output statusPublished
Publication dates
Online19 Jun 2024
Publication process dates
Accepted08 Feb 2024

Permalink - https://repository.rothamsted.ac.uk/item/98zz5/sugarcane-cultivation-as-a-major-surface-source-of-sediment-in-catchments-from-a-coastal-zone-of-pernambuco-brazil

Restricted files

Publisher's version

Under embargo indefinitely

Supplemental file

Under embargo indefinitely

16 total views
0 total downloads
4 views this month
0 downloads this month