Agroecological restoration of savanna ecosystems

Badejo, M. A.

doi:10.1016/s0925-8574(98)00012-3

Cited by 22 publications

(13 citation statements)

References 2 publications

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“…These species all have been shown to have potential cytotoxic and allelopathic effects (Anaya-Lang 1979, Gupta et al 1996, PerezGuerrero et al 2001, Xuan et al 2004, which may result in nematode inhibition. The elevated AvP concentrations in the presence of woody plants in the jurup che may be due to plants pioneering nutrient-rich areas (Siemanns and Rogers 2003), or it may be due to phosphorus pumping (Perezllorens et al 1993, Badejo 1998, Vejre and Hoppe 1998. Diemont et al (2006b) reported that a Lacandon protected species, Sapium lateriflorum, may be providing phosphorus to the upper soil layers by root-shoot-leaflitter transport from the lower soil layers.…”

Section: Discussionmentioning

confidence: 99%

Lacandon Maya ecosystem management: sustainable design for subsistence and environmental restoration

Diemont

Martin

2009

Ecological Applications

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Abstract. Indigenous groups have designed and managed their ecosystems for generations, resulting in biodiversity protection while producing for their family's needs. Here we describe the agroecosystem of the Lacandon Maya, an indigenous group who live in Chiapas, Mexico. The Lacandon practice a form of swidden agriculture that conserves the surrounding rain forest ecosystem while cycling the majority of their land through five successional stages. These stages include an herbaceous stage, two shrub stages, and two forest stages. A portion of their land is kept in primary forest. This study presents the Lacandon traditional ecological knowledge (TEK) for agroforestry and quantitatively describes the plant community and the associated soil ecology of each successional stage. Also documented is the knowledge of the Lacandon regarding the immediate use of plant species and plant species useful for soil fertility enhancement. Woody plant diversity increases during the successional stages of the Lacandon system, and by the beginning of the first forest stage, the diversity is similar to that of the primary forest. In all stages, Lacandon use 60% of the available plant species for food, medicine, and raw materials. Approximately 45% of the woody plant species present in each fallow stage were thought by the Lacandon to enhance soil fertility. Total soil nitrogen and soil organic matter increased with successional stage and with time from intentional burn. Nutrient and soil nematode dynamics in shrub stages related to the presence of introduced and managed plants, indicating engineered soil enhancement by the Lacandon. The effects on biodiversity and soil ecology coupled with productivity for agricultural subsistence indicate that Lacandon TEK may offer tools for environmental conservation that would provide for a family's basic needs while maintaining a biodiverse rain forest ecosystem. Tools such as these may offer options for regional restoration and conservation efforts such as the Mesoamerican Biological Corridor in Mexico and Central America, where attainment of environmental goals must include methods to provide resources to local inhabitants.

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Section: Discussionmentioning

confidence: 99%

Lacandon Maya ecosystem management: sustainable design for subsistence and environmental restoration

Diemont

Martin

2009

Ecological Applications

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“…Regressive succession is useful in understanding landscape changes in tropical rainforests (Salami 1999), deciduous forests (Freson et al 1974; Menaut et al 1995; Badejo 1998; Cavelier et al 1998; Roth 1999), and Pyrenese badlands (Guardia et al 2000). The communities examined in this study exhibit the effects of anthropogenic interference but do not represent successional stages of mature deciduous forests on its way to degradation.…”

Section: Discussionmentioning

confidence: 99%

Patterns in woody species diversity, richness and partitioning of diversity in forest communities of tropical deciduous forest biome

Saha¹

2003

Ecography

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The regressive succession model hypothesizes tropical savanna‐woodlands to be a degraded stage of primary deciduous forests. Species diversity, richness and evenness of woody species in savanna‐woodlands, secondary deciduous forests and mature deciduous forests of central India were compared to test if the regressive succession explained pattern in species richness, diversity, functional diversity and basal area. At the plot scale (0.1 ha) secondary deciduous forests and savanna‐woodlands had similar species diversity, a pattern not consistent with the regressive model of deciduous forest succession, and mature deciduous forests had greater species diversity and richness (p<0.05). When examined at a larger scale or community scale by pooling all plots within a community type, the trend in diversity persisted even with greater effort allocated to sampling of secondary deciduous forests. Species richness at the community scale was greatest in secondary deciduous forest as expected from species area relationship. The communities shared 28 woody species but the species composition was significantly different between the communities. I suggest that conservation of tropical deciduous forests based on regressive succession model is problematic.

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“…Deforestation in West Africa has led to increases in secondary savannahs (Badejo, 1998). Declines in soil fertility are also found as consequence of overgrazing, and management for livestock is associated with bush burning (Van der Werf, 1983;Adepetu, 1994).…”

Section: Land Use Change and Soil Carbon Evolutionmentioning

confidence: 99%

Conservation of soil organic carbon, biodiversity and the provision of other ecosystem services along climatic gradients in West Africa

et al. 2009

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Agroecological restoration of savanna ecosystems

Cited by 22 publications

References 2 publications

Lacandon Maya ecosystem management: sustainable design for subsistence and environmental restoration

Lacandon Maya ecosystem management: sustainable design for subsistence and environmental restoration

Patterns in woody species diversity, richness and partitioning of diversity in forest communities of tropical deciduous forest biome

Conservation of soil organic carbon, biodiversity and the provision of other ecosystem services along climatic gradients in West Africa

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