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Disentangling structural patterns of natural forest fragments in a savanna matrix in the eastern Brazilian Amazon

Iêda Leão do AMARAL et al · Instituto Nacional de Pesquisas da Amazônia · 2017

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"Pinta" em população nativa do Estado do Amazonas

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ABSTRACT Natural fragments are an important source of richness for the management and conservation of a local flora. The objective of this study was to evaluate the effect of fragmentation on the structure and composition of the plant communities of forest fragments (FF) in Alter do Chão, eastern Brazilian Amazonia. The study sample consisted of 25 FF and nine continuous forest (CF) sites. We compared plant density and species richness between site categories by t-tests, analyzed the differences in composition by cluster analysis, and assessed the effect of fragment size and distance to CF on the basal area and diameter of FF assemblages by linear regression. Individual trees and shrubs with DBH ≥1.27 cm were measured in 2x250 m plots. 17,078 individuals were recorded - 75.32% in FF and 24.68% in CF, comprising 475 species, 216 genera and 64 families. Myrtaceae and Fabaceae were the most abundant families in both FF and CF. Average species richness in FF and CF was statistically different. The 20 species with the highest importance values were similar in FF and CF. The average plant diameter was similar in FF and CF, suggesting that both are "mature" forests composed of thin individuals. Average diameter and total basal area showed a negative relationship with distance to CF and fragment area, respectively. Similarity analysis revealed two groups, one composed exclusively of portions of fragmented forest. Fragments and continuous forest differed in species composition, but were similar in structure. Diameter distribution in fragments was similar to that of primary forests.

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APA 7

al, I. L. D. A. E. (2017). Disentangling structural patterns of natural forest fragments in a savanna matrix in the eastern Brazilian Amazon. https://doi.org/10.1590/1809-4392201601923

MLA

al, Iêda Leão do AMARAL et. "Disentangling structural patterns of natural forest fragments in a savanna matrix in the eastern Brazilian Amazon." 2017. https://doi.org/10.1590/1809-4392201601923.

Chicago

al, Iêda Leão do AMARAL et. 2017. "Disentangling structural patterns of natural forest fragments in a savanna matrix in the eastern Brazilian Amazon.". https://doi.org/10.1590/1809-4392201601923.

Harvard

al, I. L. D. A. E. 2017, Disentangling structural patterns of natural forest fragments in a savanna matrix in the eastern Brazilian Amazon, Instituto Nacional de Pesquisas da Amazônia, available at: https://doi.org/10.1590/1809-4392201601923 [Accessed 30 Jun. 2026].

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Título
Disentangling structural patterns of natural forest fragments in a savanna matrix in the eastern Brazilian Amazon
Autor / colaboradores
Iêda Leão do AMARAL et al
Editorial
Instituto Nacional de Pesquisas da Amazônia
Año de publicación
2017
ISSN
0044-5967
ISSN
0044-5967
Idioma
eng

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