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Title of Journal: Agroforest Syst

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Abbravation: Agroforestry Systems

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Springer Netherlands

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DOI

10.1007/978-1-4020-5887-5

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ISSN

1572-9680

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Marginal effects on biodiversity carbon sequestra

Authors: Elizabeth A Obeng Francisco X Aguilar
Publish Date: 2014/09/03
Volume: 89, Issue: 1, Pages: 19-35
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Abstract

Cacao Theobroma cacao a perennial crop predominantly cultivated as a multiproduct and multistrata agroforestry system has been identified as one of an array of factors behind land use changes in the tropics Concerns have also been raised about the gradual shift from traditional cacao growing systems under diverse and dense tree canopy to lower or noshade cover leading to further loss of direct and functional forest ecosystem values such as protective and regulatory environmental services This paper surveys existing literature and focuses on changes to biodiversity carbon sequestration and nutrient cycling conditions due to a transition from natural forests to traditional lowerdensity agroforestry and highdensity hybrid monoculture cacao systems We derive marginal effects on selected ecosystem functions expressed as a percentage unit change in corresponding ecosystem values from a natural forest baseline scenario Data from 16 studies conducted in Africa and the Americas show a negative trend in marginal changes in aboveand belowground carbon sequestration potential for the two cacao farming systems The extent of marginal losses in carbon storage was comparatively higher for the monoculture than cacao agroforestry system A general trend denoting positive marginal changes has been reported for mean species richness in soil and litter and some essential chemical and physical soil properties Calcium Magnesium sand and silt of cacao agroforestry systems compared with a natural forest baseline The balance between negative and positive changes show that traditional cacao agroforestry systems have greater potential for conservation of ecosystem services closer to a natural forest state than monoculturesThis review is based on work accomplished under a United States Department of Agriculture USDA Norman Borlaug Fellowship and USDA National Institute of Food and Agriculture Project Number MONRSL0893 We would like to thank the International Agriculture Program Office and Department of Forestry at the University of Missouri for their support during the fellowship Program Views expressed in this manuscript are the authors’ own

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  1. Predictive models for biomass and carbon stock estimation in Psidium guajava on bouldery riverbed lands in North-Western Himalayas, India
  2. Adoption potential of selected organic resources for improving soil fertility in the central highlands of Kenya
  3. A conceptual business model for an agroforestry consulting company
  4. Biomass production and carbon stocks in poplar-crop intercropping systems: a case study in northwestern Jiangsu, China
  5. Contribution of trees to soil carbon sequestration under agroforestry systems in the West African Sahel
  6. Photosynthesis, growth and yield of soybean and maize in a tree-based agroforestry intercropping system on the Loess Plateau
  7. Hybrid poplar ( Populus ssp.) selections for arid and semi-arid intermountain regions of the western United States
  8. Women and agroforestry: four myths and three case studies
  9. Exotic tree species displace indigenous ones on farms at intermediate altitudes around Mount Kenya
  10. Seasonal dependence of rooting success in cuttings from natural forest trees in Madagascar
  11. Cover crops alter phosphorus soil fractions and organic matter accumulation in a Peruvian cacao agroforestry system
  12. Response of the common bean ( Phaseolus vulgaris L.) to Tithonia diversifolia (Hamsl.) Gray biomass retention or removal in a slash and mulch agroforestry system
  13. Forest changes over a century in Sardinia: implications for conservation in a Mediterranean hotspot
  14. Microclimatic differences between mature loblolly-pine silvopasture and open-pasture
  15. An evaluation of the century model to predict soil organic carbon: examples from Costa Rica and Canada
  16. The potential for carbon offset trading to provide added incentive to adopt silvopasture and alley cropping in Missouri
  17. Carbon storage in livestock systems with and without live fences of Gliricidia sepium in the humid tropics of Mexico
  18. Floral resource partitioning by ants and bees in a jambolan Syzygium jambolanum (Myrtaceae) agroforestry system in Brazilian Meridional Amazon
  19. Microclimate patterns on the leeside of single-row tree windbreaks during different weather conditions in Florida farms: implications for improved crop production
  20. Perennial crop-based agroforestry systems in Northeast Brazil
  21. Arbuscular mycorrhizal association of indigenous agroforestry tree species and their infective potential with maize in the rift valley, Ethiopia
  22. Modeling tree cover changes in a pasture-dominated landscape by adopting silvopastoral practices in a dry forest region in Central Brazil
  23. Strengthening capacity for agribusiness in agroforestry and natural resources in tertiary agricultural education in Africa: African Network for Agriculture, Agroforestry and Natural Resources Education (ANAFE)
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