Soil ecosystem services and land use in the rapidly changing Orinoco River Basin of Colombia

Lavelle, Patrick; Rodríguez, Nubia E; Argüello, Orlando; Bernal, Johan Fabian; Botero, César; Chaparro, Paula; Gómez, Y.; Gutiérrez, A; Hurtado, María del Pilar; Loaiza, Sandra; Pullido, Sandra Xiomara; Rodríguez, Edgar; Sanabria, Catalina; Velásquez, Elena; Fonte, Steven J.

doi:10.1016/j.agee.2013.12.020

Cited by 138 publications

(136 citation statements)

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“…Para evaluar el efecto de los arreglos agroforestales se hizo una prueba de Monte Carlo (Lavelle et al., 2014). El análisis de coordenadas principales se realizó utilizando el paquete R versión 3.1.1 (R Development Core Team, 2014) utilizando la librería Ade4 (Dray y Dufour, 2007;Chessel et al, 2004).…”

Section: Uvunclassified

Macrofauna edáfica asociada a sistemas agroforestales en la Amazonia Colombiana

2015

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ResumenLa densidad, riqueza y diversidad de la macrofauna edáfica son afectadas, entre otros factores, por la configuración de los agroecosistemas y la estacionalidad de la precipitación. Con el fin de evaluar estos efectos en mayo y noviembre de 2011, correspondientes a épocas de máxima y mínima precipitación, respectivamente, se realizaron estudios sobre la composición de la macrofauna edáfica asociada con los arreglos agroforestales ubicados en el Centro de Investigaciones Macagual Cesar Augusto Estrada González, Amazonia, Caquetá, Colombia. El experimento se dispuso en un diseño completo al azar bifactorial con cuatro tratamientos (arreglos agroforestales: AB = abarco -Cariniana pyriformis Miers; CH = caucho Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg. ; CP = caucho-parica Schizolobium amazonicum Huber; UV = uvito Genipa Americana L.) y dos épocas (máxima y míni-ma precipitación), y cuatro repeticiones en parcelas divididas. Para explorar las relaciones entre los órdenes de macrofauna, se realizó un análisis de componentes principales y se evalúo el efecto de los arreglos agroforestales con una prueba de Monte Carlo. Los resultados mostraron que la densidad de la macrofauna fue mayor en el periodo de máxima precipitación (1129 individuos) en comparación con el de mínima (598 individuos). Los arreglos agroforestales influyen sobre la presencia o ausencia de algunos grupos taxonómicos (P < 0.05) como Homoptera (Insecta) y Raphidioptera (Insecta); además los UV y AB pueden favorecer a la macrofauna del estrés por sequía.Palabras claves: Edafofauna, fauna del suelo, arreglo agroforestal, época, densidad, riqueza, diversidad, Amazonía. AbstractThe density, richness and diversity of soil macrofauna are influenced by diverse factors such as the configuration of agroecosystems, seasonality, among others. In order to assess this influence, sampling was conducted in May and November 2011, corresponding to the periods of maximum and minimum rainfall respectively on the composition of soil macrofauna associated with agroforestal arragements located in the Research Centre Macagual Cesar Augusto Estrada González property of the University of Amazonia, Colombia. The experiment was conducted under a complete randomized bifactorial design with 4 treatments (agroforestry system) and 2 periods (maximum and minimum precipitation), with 4 replicates in split plots. Principal component analysis was performed to explore the relationships between the orders and the effect of the agroforestal arrangements, which was tested with a test of Monte Carlo. The results showed that the density of the macrofauna was higher in the period of maximum pluvial precipitation compared to the minimum (1129 vs 598 subjects, respectively). The agroforestal arrangements influences the presence or absence of some taxonomic groups of soil macrofauna (P<0.05) as Homoptera and Raphidioptera, besides than UV and AB can favor the macrofauna of the stress due to the drought.

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Macrofauna edáfica asociada a sistemas agroforestales en la Amazonia Colombiana

2015

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“…In particular, our understanding of the contribution of Amazonian wetlands to regional C and GHG budgets is weak, as the majority of past ecosystem-scale studies have focused on terra firme forests and savannas (D'Amelio et al, 2009;Saikawa et al, 2013;Wilson et al, 2016;Kirschke et al, 2013;Nisbet et al, 2014). Empirical studies of GHG fluxes from Amazonian wetlands are more limited in geographic scope and have focused on three major areas: wetlands in the state of Amazonas near the city of Manaus (Devol et al, 1990;Bartlett et al, 1988Bartlett et al, , 1990Keller et al, 1986), the Pantanal region (Melack et al, 2004;Marani and Alvalá, 2007;Liengaard et al, 2013), and the Orinoco River basin (Smith et al, 2000;Lavelle et al, 2014). Critically, none of the ecosystems sampled in the past were peatforming ones; rather, the habitats investigated were non-peat forming (i.e., mineral or organo-mineral soils), seasonally inundated floodplain forests (i.e., varzea), rivers, or lakes.…”

Section: Introductionmentioning

confidence: 99%

Seasonal variability in methane and nitrous oxide fluxes from tropical peatlands in the western Amazon basin

et al. 2017

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Abstract. The Amazon plays a critical role in global atmospheric budgets of methane (CH 4 ) and nitrous oxide (N 2 O). However, while we have a relatively good understanding of the continental-scale flux of these greenhouse gases (GHGs), one of the key gaps in knowledge is the specific contribution of peatland ecosystems to the regional budgets of these GHGs. Here we report CH 4 and N 2 O fluxes from lowland tropical peatlands in the Pastaza-Marañón foreland basin (PMFB) in Peru, one of the largest peatland complexes in the Amazon basin. The goal of this research was to quantify the range and magnitude of CH 4 and N 2 O fluxes from this region, assess seasonal trends in trace gas exchange, and determine the role of different environmental variables in driving GHG flux. Trace gas fluxes were determined from the most numerically dominant peatland vegetation types in the region: forested vegetation, forested (short pole) vegetation, Mauritia flexuosadominated palm swamp, and mixed palm swamp. Data were collected in both wet and dry seasons over the course of four field campaigns from 2012 to 2014. Diffusive CH 4 emissions averaged 36.05 ± 3.09 mg CH 4 -C m −2 day −1 across the entire dataset, with diffusive CH 4 flux varying significantly among vegetation types and between seasons. Net ebullition of CH 4 averaged 973.3 ± 161.4 mg CH 4 -C m −2 day −1 and did not vary significantly among vegetation types or between seasons. Diffusive CH 4 flux was greatest for mixed palm swamp (52.0 ± 16.0 mg CH 4 -C m −2 day −1 ), followed by M. flexuosa palm swamp (36.7 ± 3.9 mg CH 4 -C m −2 day −1 ), forested (short pole) vegetation (31.6 ± 6.6 mg CH 4 -C m −2 day −1 ), and forested vegetation (29.8 ± 10.0 mg CH 4 -C m −2 day −1 ). Diffusive CH 4 flux also showed marked seasonality, with divergent seasonal patterns among ecosystems. Forested vegetation and mixed palm swamp showed significantly higher dry season (47.2 ± 5.4 mg CH 4 -C m −2 day −1 and 85.5 ± 26.4 mg CH 4 -C m −2 day −1 , respectively) compared to wet season emissions (6.8 ± 1.0 mg CH 4 -C m −2 day −1 and 5.2 ± 2.7 mg CH 4 -C m −2 day −1 , respectively). In contrast, forested (short pole) vegetation and M. flexuosa palm swamp showed the opposite trend, with dry season flux of 9.6 ± 2.6 and 25.5 ± 2.9 mg CH 4 -C m −2 day −1 , respectively, versus wet season flux of 103.4 ± 13.6 and 53.4 ± 9.8 mg CH 4 -C m −2 day −1 , respectively. These divergent seasonal trends may be linked to very high water tables (> 1 m) in forested vegetation and mixed palm swamp during the wet season, which may have constrained CH 4 transport across the soil-atmosphere interface. Diffusive N 2 O flux was very low (0.70 ± 0.34 µg N 2 O-N m −2 day −1 ) and did not vary significantly among ecosystems or between seasons. We conclude that peatlands in the PMFB are large and regionally significant sources of atmospheric CH 4 that need to be better accounted for in regional emissions inventories. In contrast, N 2 O flux was negligible, suggesting that this region does not make a significant contribut...

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“…Therefore, their diversity may serve as an indicator of conservation status, for example in forest fragments (Alves et al, 2011, Oliveira et al, 2013, Almeida et al, 2016. Termites are the most abundant organisms in the soil macrofauna of natural ecosystems and semi-cultivated and cultivated areas in the Eastern Plains of Colombia, where they can form more than 50% of the total abundance (Decaëns et al, 1994;Lavelle et al, 2014). Termite activity influences the physical, chemical and biological activity of soils in this region (Galvis et al, 1978;Decaëns et al, 1994;Jiménez & Decaëns, 2006 …”

Section: Introductionmentioning

confidence: 99%

“…The region is currently experiencing accelerated changes in land use, mainly in the Eastern Plains (Romero-Ruiz et al, 2012), that will have unpredictable consequences for its ecological integrity (Lavelle et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Termite (Isoptera) Diversity in a Gallery Forests Relict in the Colombian Eastern Plains

Pinzón

Baquero

Beltran³

2017

Sociobiology

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Termites are known to influence soil nutrient cycle and decomposition processes, but its diversity and ecology in Colombian gallery forests have been little studied. Richness and relative abundance of termites found in gallery forest fragments protected within commercial forest plantations were quantified. Sampling was conducted at three sites surrounding the creeks Huerta La Grande, Claro and Los Micos, along 50 m long linear transects divided into five plots (10 × 2 m); in total, there were nine transects and 45 plots. Termite sampling involved the examination of fallen branches, pieces of wood in contact with the soil, arboreal termitaria, epigeal nests and soil samples of 20 cm deep (four per plot). Thirty-eight species, from the families Termitidae (Apicotermitinae, Termitinae, Nasutitermitinae, Syntermitinae) and Rhinotermitidae (Heterotermitinae), were found. No differences regarding termite species, abundance or feeding guilds were detected among sampling sites; neither, association between richness or termite abundance, and tree size, or accumulation depth of leaf litter on the soil or canopy light. The termite diversity found in fragments of gallery forest highlights the importance of maintaining this type of vegetation to preserve biodiversity and the ecosystem services derived from the biological activity of termites.

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Soil ecosystem services and land use in the rapidly changing Orinoco River Basin of Colombia

Cited by 138 publications

References 28 publications

Macrofauna edáfica asociada a sistemas agroforestales en la Amazonia Colombiana

Macrofauna edáfica asociada a sistemas agroforestales en la Amazonia Colombiana

Seasonal variability in methane and nitrous oxide fluxes from tropical peatlands in the western Amazon basin

Termite (Isoptera) Diversity in a Gallery Forests Relict in the Colombian Eastern Plains

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