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Changes in Brazil’s Forest Code can erode the potential of riparian buffers to supply watershed services

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  • Guidotti, Vinicius
  • Ferraz, Silvio Frosini de Barros
  • Pinto, Luis Fernando Guedes
  • Sparovek, Gerd
  • Taniwaki, Ricardo H.
  • Garcia, Lara Gabrielle
  • Brancalion, Pedro H.S.

Abstract

In Brazil, the Forest Code requires landholders to maintain fixed-width buffers of native vegetation along watercourses – legally called Areas of Permanent Preservation (APPs). In 2012, agricultural activities started to be partially allowed in APPs, but only if best management practices on soil and water conservation are adopted and if a narrow buffer strip with native vegetation is restored adjacently to the watercourse. In this paper, we present a modeling framework to investigate the capacity of legal compliant APPs to supply watershed services (erosion control and stream bank stabilization) in a 2,200 ha watershed in São Paulo State, Brazil. Our results suggest that the narrower the riparian buffer the lower the control of soil erosion dynamic within APPs, and that riparian buffers smaller than 8 m can act as a source of sediments to streams. The adoption of best management practices can contribute to controlling soil erosion within APPs but the presence of native forests in the first 15 m is necessary to guarantee equivalent protection to streams when compared to APPs completely covered by forests. Moreover, we observed that forest restoration within APPs helped to reduce the average soil loss of the watershed by only 20 %, compared to a reduction of 55 % when best practices are implemented in all watershed agricultural areas. We conclude that (i) the reduced requirements for APP restoration may contribute to stream sedimentation, which will likely affect the supply of watershed services by stream ecosystems; (ii) the implementation of best management practices in APPs will not have the same effect as native forests to reduce stream sedimentation; and (iii) the adoption of best management practices in all agricultural production areas – and not only within APPs as required by law – is the best strategy to promote the supply of watershed services to society.

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  • Guidotti, Vinicius & Ferraz, Silvio Frosini de Barros & Pinto, Luis Fernando Guedes & Sparovek, Gerd & Taniwaki, Ricardo H. & Garcia, Lara Gabrielle & Brancalion, Pedro H.S., 2020. "Changes in Brazil’s Forest Code can erode the potential of riparian buffers to supply watershed services," Land Use Policy, Elsevier, vol. 94(C).
    • Handle: RePEc:eee:lauspo:v:94:y:2020:i:c:s026483771831113x
    DOI: 10.1016/j.landusepol.2020.104511
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    References listed on IDEAS

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    1. Pushpa Tuppad & Narayanan Kannan & Raghavan Srinivasan & Colleen Rossi & Jeffrey Arnold, 2010. "Simulation of Agricultural Management Alternatives for Watershed Protection," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 24(12), pages 3115-3144, September.
    2. Lazdinis, Marius & Angelstam, Per, 2005. "Functionality of riparian forest ecotones in the context of former Soviet Union and Swedish forest management histories," Forest Policy and Economics, Elsevier, vol. 7(3), pages 321-332, March.
    3. Balvanera, Patricia & Uriarte, María & Almeida-Leñero, Lucía & Altesor, Alice & DeClerck, Fabrice & Gardner, Toby & Hall, Jefferson & Lara, Antonio & Laterra, Pedro & Peña-Claros, Marielos & Silva Mat, 2012. "Ecosystem services research in Latin America: The state of the art," Ecosystem Services, Elsevier, vol. 2(C), pages 56-70.
    4. Paulo Teixeira de Sousa & Maria Teresa Fernandez Piedade & Ennio Candotti, 2011. "Brazil's forest code puts wetlands at risk," Nature, Nature, vol. 478(7370), pages 458-458, October.
    5. Sparovek, Gerd & Reydon, Bastiaan Philip & Guedes Pinto, Luís Fernando & Faria, Vinicius & de Freitas, Flavio Luiz Mazzaro & Azevedo-Ramos, Claudia & Gardner, Toby & Hamamura, Caio & Rajão, Raoni & Ce, 2019. "Who owns Brazilian lands?," Land Use Policy, Elsevier, vol. 87(C).
    6. Richards, Ryan C. & Rerolle, Julia & Aronson, James & Pereira, Paulo Henrique & Gonçalves, Helena & Brancalion, Pedro H.S., 2015. "Governing a pioneer program on payment for watershed services: Stakeholder involvement, legal frameworks and early lessons from the Atlantic forest of Brazil," Ecosystem Services, Elsevier, vol. 16(C), pages 23-32.
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    1. Shinde, Nilesh N. & Do Valle, Stella Z. Schons & Maia, Alexandre Gori & Amacher, Gregory S., 2022. "Can an environmental policy contribute to the reduction of land conflict? Evidence from the Rural Environmental Registry (CAR) in the Brazilian Amazon," 2022 Annual Meeting, July 31-August 2, Anaheim, California 322584, Agricultural and Applied Economics Association.
    2. Preto, Mayra de Freitas & Garcia, Andrea Santos & Nakai, Érica Silva & Casarin, Laura Piacentini & Vilela, Vívian Maria de Faria Nasser & Ballester, Maria Victoria Ramos, 2022. "The role of environmental legislation and land use patterns on riparian deforestation dynamics in an Amazonian agricultural frontier (MT, Brazil)," Land Use Policy, Elsevier, vol. 118(C).
    3. Natália Pezzi Fachinelli & Amaro Olímpio Pereira, 2023. "Effects of Restoration and Conservation of Riparian Vegetation on Sediment Retention in the Catchment Area of Corumbá IV Hydroelectric Power Plant, Brazil," World, MDPI, vol. 4(4), pages 1-16, September.

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