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Viability of combined timber and non-timber harvests for one species: A Carapa guianensis case study

Author

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  • Klimas, Christie A.
  • Cropper, Wendell P.
  • Kainer, Karen A.
  • de Oliveira Wadt, Lúcia H.

Abstract

There is growing consensus that sustainable use has a significant role to play in global conservation. Tropical forests are no different, and managing them for multiple products is envisioned as a preferable alternative to timber-dominant management models. Limited research, however, has tested coupling timber and non-timber harvests in multiple-use species for both economic gain and long-term species conservation. We employ matrix population models and the extinction time cumulative distribution function to examine one such species, Carapa guianensis. We investigated sustainable harvests of C. guianensis in two forest types in which it occurs naturally in western Amazonia, testing whether differences between forest types affect population responses to harvest under measured environmental stochasticity regimes. Our results indicated that some C. guianensis populations may be suitable for extraction of seeds, timber, or a combination of both. In upland or terra firme forest sites, model projections suggested that no tested levels of seed and timber extraction were sustainable. In contrast, we found the potential for compatibility between seed and timber harvest in occasionally inundated forests. In these sites, which are ecologically similar to wet areas where Carapa thrives throughout its range, our results suggested that 10% annual seed harvests were compatible with 100% timber harvests of trees ≥50cm twice a century, the equivalent of approximately two trees per hectare. Application of this research approach to other economically important tropical species could increase the diversity of Amazonian management and conservation options.

Suggested Citation

  • Klimas, Christie A. & Cropper, Wendell P. & Kainer, Karen A. & de Oliveira Wadt, Lúcia H., 2012. "Viability of combined timber and non-timber harvests for one species: A Carapa guianensis case study," Ecological Modelling, Elsevier, vol. 246(C), pages 147-156.
  • Handle: RePEc:eee:ecomod:v:246:y:2012:i:c:p:147-156
    DOI: 10.1016/j.ecolmodel.2012.07.022
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    1. repec:bla:devpol:v:25:y:2007:i:3:p:355-377 is not listed on IDEAS
    2. Morsello, Carla, 2006. "Company-community non-timber forest product deals in the Brazilian Amazon: A review of opportunities and problems," Forest Policy and Economics, Elsevier, vol. 8(4), pages 485-494, June.
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    Cited by:

    1. Logofet, Dmitrii O., 2013. "Projection matrices in variable environments: λ1 in theory and practice," Ecological Modelling, Elsevier, vol. 251(C), pages 307-311.
    2. Mariana Gomes Oliveira & Claudionisio Souza Araujo & Igor Do Vale & Izildinha Souza Miranda, 2022. "Tree population structure in fragments of different sizes in the Eastern Amazon," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 24(4), pages 5743-5763, April.
    3. Rosenfeld, Tomas & Pokorny, Benno & Marcovitch, Jacques & Poschen, Peter, 2024. "BIOECONOMY based on non-timber forest products for development and forest conservation - untapped potential or false hope? A systematic review for the BRAZILIAN amazon," Forest Policy and Economics, Elsevier, vol. 163(C).
    4. Pires, Sandra Aguiar de Oliveira & de Mendonça, Adriano Ribeiro & da Silva, Gilson Fernandes & d'Oliveira, Marcus Vinícius Neves & de Oliveira, Luís Claudio & Silva, Jeferson Pereira Martins & da Silv, 2021. "Growth modeling of Carapa guianensis and Tetragastris altissima for improved management in native forests in the Amazon," Ecological Modelling, Elsevier, vol. 456(C).
    5. Josimar da Silva Freitas & Luciano Felix Florit & Milton Cordeiro Farias Filho & Armin Mathis & Alfredo Kingo Oyama Homma & Alexandre Almir Ferreira Rivas & Jose Valderi Farias de Souza & Gelson Dias , 2024. "Adopt a Park: New Environmental Assistance in Conservation Units in the Amazon?," Journal of Sustainable Development, Canadian Center of Science and Education, vol. 14(5), pages 1-59, July.
    6. Logofet, Dmitrii O., 2019. "Does averaging overestimate or underestimate population growth? It depends," Ecological Modelling, Elsevier, vol. 411(C).
    7. Hilder André Bezerra Farias & Sérgio Luiz de Medeiros Rivero & Márcia Jucá Teixeira Diniz, 2017. "Negative incentives and sustainability in the amazonian logging industry [Negative incentives and sustainability in the amazonian logging industry]," Nova Economia, Economics Department, Universidade Federal de Minas Gerais (Brazil), vol. 27(3), pages 363-391, September.

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