Formation of Macroaggregates and Organic Carbon in Cocoa Agroforestry Systems
Material type:
ArticleSubject(s): Online resources:
In:
Floresta e Ambiente (Brazil) v. 26(3) p. 1-12; (2019)Summary:
ABSTRACT
The objective of this study was to analyze the biological contribution to macroaggregate formation
under cocoa agroforestry systems, as well as to evaluate the potential of macroaggregates to store
carbon. The variation of the populations of macrofauna and the relationship with the morphology
of aggregates was monitored in five agroforestry systems associated with cocoa established from
different land uses, taking as reference the forest and pasture. Some cacao agroforestry systems
favored the presence of macrofauna functional groups similar to the forest (p < 0.05). According
to the principal component analysis, the effect of land use on macroaggregate formation is highly
significant (p < 0.001) and explained 55% of the total variance. The macrofauna and macroaggregates
showed significant covariation (RV = 0.22, p-value = 0.001). Biogenic macroaggregates contained
more carbon when they came from agroforestry systems.
Keywords: soil macrofauna, functional groups, co-inertia analysis.
| Item type | Current library | Collection | Call number | Vol info | Status | Date due | Barcode |
|---|---|---|---|---|---|---|---|
Periódicos
|
Biblioteca Nacional de Agricultura - Binagri Agrobase - Periódicos | Periódicos agrícolas | 2019 26(3) | Online | 2025-0451 |
Publicação on-line; 34 ref.; 6 tables; 4 illus.; Summary (En)
ABSTRACT
The objective of this study was to analyze the biological contribution to macroaggregate formation
under cocoa agroforestry systems, as well as to evaluate the potential of macroaggregates to store
carbon. The variation of the populations of macrofauna and the relationship with the morphology
of aggregates was monitored in five agroforestry systems associated with cocoa established from
different land uses, taking as reference the forest and pasture. Some cacao agroforestry systems
favored the presence of macrofauna functional groups similar to the forest (p < 0.05). According
to the principal component analysis, the effect of land use on macroaggregate formation is highly
significant (p < 0.001) and explained 55% of the total variance. The macrofauna and macroaggregates
showed significant covariation (RV = 0.22, p-value = 0.001). Biogenic macroaggregates contained
more carbon when they came from agroforestry systems.
Keywords: soil macrofauna, functional groups, co-inertia analysis.
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