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  • Articles  (6)
  • Data
  • Column liquid chromatography
  • Electron microscopy
  • Monitoring system
  • stability
  • Springer  (6)
  • Ethnic Sciences  (6)
  • 1
    Electronic Resource
    Electronic Resource
    Modern ticuna swidden-fallow management in the Colombian Amazon: Ecologically integrating market strategies and subsistence-driven economies? (1995)
    Springer
    Human ecology 23 (1995), S. 335-356 
    Details
    ISSN: 1572-9915
    Keywords: rain forest ; management ; market ; Colombia ; stability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Ethnic Sciences
    Notes: Abstract The past failure of large-scale, rural development in Amazonia has emphasized the value of small-scale, swidden-fallow management practices. The management strategies used by indigenous cultivators are well-documented, but few studies have examined how absorption by market-based economies may affect the economic and ecological stability of the agricultural system. In this study, we provide a detailed account of swidden-fallow management as it is practiced at Las Palmeras, Amazonas, Colombia; moreover, we assessed the effect of a shift from subsistence to market-directed production. A total of 68 species were selectively managed in the swidden/fallow system. Seventy-seven percent of species at the site were managed for subsistence only, 22% were managed with a view to selling surplus at market. Only one species, Cedrela odorata, was managed solely for market production. A shift from subsistence-based to market-directed production may lower the ecological and economic stability of the system at Las Palmeras. Nonperishable production strategies, such as for timber production, appear to provide the most secure approach toward market integration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01190136
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  • 2
    Electronic Resource
    Electronic Resource
    Reconsidering the green revolution: Diversity and stability in cradle areas of crop domestication (1992)
    Springer
    Human ecology 20 (1992), S. 145-167 
    Details
    ISSN: 1572-9915
    Keywords: agriculture ; development ; diversity ; stability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Ethnic Sciences
    Notes: Abstract This paper reconsiders two widely held hypotheses about the effects of the green revolution, that it led to biological simplification and instability. The hypothesis of biological simplification (genetic erosion) is tested with evidence from Andean agriculture, where farmers maintain a significant degree of crop diversity even as they adopt modern crop varieties. The hypothesis of increased instability is tested with evidence from Asia where wheat and rice yields show no general pattern of increased instability. Neither of these hypotheses is confirmed. The conventional wisdom about the green revolution should be reconsidered with emphasis on resilience and variation in modernizing farming systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00889077
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  • 3
    Electronic Resource
    Electronic Resource
    Ecological stability and community diversity during mormon colonization of the Little Colorado River Basin (1987)
    Springer
    Human ecology 15 (1987), S. 317-338 
    Details
    ISSN: 1572-9915
    Keywords: productivity ; diversity ; stability ; maintenance costs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Ethnic Sciences
    Notes: Abstract By describing the ecological implications of Mormon settlement in the Little Colorado River Basin, the paper demonstrates: (1) the application of general ecological concepts in human ecology, (2) the ecological basis for the evolution of complex human communities, (3) the interactive, hierarchical relationship between community diversity and environmental stability, and (4) the positive contribution that human ecology can make to the general discussion of diversity and stability in ecological systems. The paper gives a brief description of Mormon colonization in the Little Colorado River Basin. Local differences in community development are then related to environmental variation within the basin and compared to general ecological research expectations. The implications of community development in this region for explaining the relationship between diversity and stability in ecological systems are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00888029
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  • 4
    Electronic Resource
    Electronic Resource
    Intensification through diversified resource use: The human ecology of a successful agricultural industry in Indonesian Borneo (1987)
    Springer
    Human ecology 15 (1987), S. 27-51 
    Details
    ISSN: 1572-9915
    Keywords: human ecology ; success ; seasonality ; intensification ; rural development ; diversity ; stability ; flexibility ; duck farming
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Ethnic Sciences
    Notes: Abstract The success of an agricultural industry in commercial duck egg production in the swamplands of South Kalimantan (Borneo) is examined through the utilization of a human ecology framework. Seasonality of resource availability and human population growth are identified as two major constraints to production faced by farmers. Population increases in the urban sectors of southeastern Borneo also present economic opportunities for farmers because of the growing demand for poultry products. Farmers have responded by developing an intensification strategy in egg production based on the use of diversified resources for duck feed. The long-term consequences of these and other innovations in duck farming are discussed; and diversity-stability theory is examined for its applicability to this case of agricultural development and for rural development theory and practice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00891370
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  • 5
    Electronic Resource
    Electronic Resource
    Progressive contextualization: Methods for research in human ecology (1983)
    Springer
    Human ecology 11 (1983), S. 265-281 
    Details
    ISSN: 1572-9915
    Keywords: human ecology research methods ; systems analyses ; people-forest interactions ; flux ; stability ; Man and the Biosphere (MAB) program ; Kalimantan (Borneo)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Ethnic Sciences
    Notes: Abstract Theoretically or practically significant research results concerning transitory as well as persistent phenomena can be obtained by human ecologists while avoiding commitment to long-term, expensive projects, rigid frameworks, traditional disciplinary goals, and unwarranted assumptions about the stability and purposiveness of units or systems. The procedures to be followed, as illustrated by research on people-forest interactions in East Kalimantan, involve a focus on significant human activities or people-environment interactions and the explanation of these by their placement within progressively wider or denser contexts. Guides for progressively contextualizing activities or interactions include a rationality principle, comparative knowledge of contexts, and the principle of pursuing the surprising.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00891376
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  • 6
    Electronic Resource
    Electronic Resource
    Agricultural resource use in an andean coastal ecosystem (1981)
    Springer
    Human ecology 9 (1981), S. 47-78 
    Details
    ISSN: 1572-9915
    Keywords: variation ; management ; stability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Ethnic Sciences
    Notes: Abstract Five concurrent systems of agricultural resource management in the Viru Valley in Peru's arid northern coastal plain are discussed as adjustments to microenvironmental variations in soil humidity. Widespread dependence on canal irrigation in an environment characterized by uncertainty in the availability of river water affects the agrarian population in several ways. The upper socioeconomic class has adapted to uncertainty by implementing a deviation-counteracting mechanism (tubular wells) that provides water on demand, giving them flexibility in choice of agricultural activities. Another class of farmers is unable to introduce this mechanism, however, and consequently must depend on a repertoire of inflexible decisions to cope with uncertainty. Each group exploits different opportunity costs to increase economic gain. One pattern provides for expansion, whereas the other at best establishes stability and maintenance. Noncanal techniques permit expansion of cultivation in conditions where canal irrigation is not feasible, thereby improving the overall level of effectiveness of resource use. Alternative techniques do not involve regulatory mechanisms nor do they require complex, interlocking social, economic, and political components. Their presence and persistence in the agricultural system provide variation that may ultimately be amplified as the need to intensify resource exploitation increases in the future.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00887855
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