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Tree population structure in fragments of different sizes in the Eastern Amazon

Author

Listed:
  • Mariana Gomes Oliveira

    (Universidade Federal Rural da Amazônia, Programa de Pós-Graduação Em Ciências Florestais
    Instituto Federal Do Pará - IFPA)

  • Claudionisio Souza Araujo

    (Instituto Federal Do Pará - IFPA)

  • Igor Do Vale

    (Universidade Federal Rural da Amazônia, Programa de Pós-Graduação Em Ciências Florestais)

  • Izildinha Souza Miranda

    (Universidade Federal Rural da Amazônia, Programa de Pós-Graduação Em Ciências Florestais)

Abstract

Fragmentation creates heterogeneous landscapes with different interactions and trajectories. In this scenario, the understanding in how forest fragment sizes influence forest species patterns can lead the way for biodiversity management and conservation in agricultural landscapes. The aim of this study was to compare the density and the diameter distribution of Bertholletia excelsa, Carapa guianensis and Cedrelinga cateniformis among fragments of different sizes, located at the Agro-Extractivist Settlement Project Praialta Piranheira, Pará State, Brazil. Data were collected from adult and sapling trees in six forest fragments. Adult and sapling density was compared among fragment sizes by the Mann–Whitney test, while diameter distributions were compared by a summary statistic calculated using the scores of a PCA produced with the results of the binomial logit model between tree DBH and the cumulative DBH proportions. The density of adult trees of three species is similar among different-sized fragments. Only the saplings of C. cateniformis showed a significant difference in density among fragment sizes. The DBH distribution of adults, for all three species, seems to also not respond to fragmentation, since the differences in the DBH distribution curves among fragments were large. The results of this study suggest that in areas established for agroextractivism, all fragments (large and small) no longer have sustainable populations (except only one C. guianensis population), probably due to anthropic pressure exerted by agroextractivism. So, it is important to ensure the structural and environmental quality of the forest fragments for the conservation of the species.

Suggested Citation

  • 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.
    • Handle: RePEc:spr:endesu:v:24:y:2022:i:4:d:10.1007_s10668-021-01681-w
    DOI: 10.1007/s10668-021-01681-w
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    References listed on IDEAS

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    1. 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.
    2. Tim Newbold & Lawrence N. Hudson & Samantha L. L. Hill & Sara Contu & Igor Lysenko & Rebecca A. Senior & Luca Börger & Dominic J. Bennett & Argyrios Choimes & Ben Collen & Julie Day & Adriana De Palma, 2015. "Global effects of land use on local terrestrial biodiversity," Nature, Nature, vol. 520(7545), pages 45-50, April.
    3. Jos Barlow & Gareth D. Lennox & Joice Ferreira & Erika Berenguer & Alexander C. Lees & Ralph Mac Nally & James R. Thomson & Silvio Frosini de Barros Ferraz & Julio Louzada & Victor Hugo Fonseca Olivei, 2016. "Anthropogenic disturbance in tropical forests can double biodiversity loss from deforestation," Nature, Nature, vol. 535(7610), pages 144-147, July.
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