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Long-term productivity of Mediterranean herbaceous vegetation after a single phosphorus application

Henkin, Zalmen ; Seligman, Noam G ; Noy-Meir, Imanuel

Journal of vegetation science, 2010-10, Vol.21 (5), p.979-991 [Periódico revisado por pares]

Oxford, UK: Opulus Press

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  • Título:
    Long-term productivity of Mediterranean herbaceous vegetation after a single phosphorus application
  • Autor: Henkin, Zalmen ; Seligman, Noam G ; Noy-Meir, Imanuel
  • Assuntos: aboveground biomass ; Agricultural soils ; Agroecosystems ; Beef cattle ; bicarbonates ; Biomass production ; botanical composition ; cattle ; dietary supplements ; ecosystems ; Fabaceae ; Grassland soils ; grazing ; Grazing management ; Herbaceous productivity ; Legumes ; Long-term biomass response ; Mediterranean climate ; Mediterranean grassland ; Nutritional feedback ; Phosphorus ; Phosphorus availability ; Plants ; Productivity ; Shrubs ; soil ; Soil ecology ; Vegetation
  • É parte de: Journal of vegetation science, 2010-10, Vol.21 (5), p.979-991
  • Notas: http://dx.doi.org/10.1111/j.1654-1103.2010.01205.x
    istex:D59060F7097C826248D4F7C625AC323A2B214445
    ark:/67375/WNG-Z150217B-K
    ArticleID:JVS1205
    MIGAL ‐ Galilee Technology Center, P.O. Box 831, Qiryat Shemona 11016, Israel.
    Henkin, Z.
    (
    Seligman, N.G.
    noamseli@netvision.net.il
    Institute of Plant Sciences, Faculty of Agricultural, Food and Environmental Quality Sciences, The Hebrew University of Jerusalem, Rehovot 76100, Israel.
    henkinz@volcani.agri.gov.il
    Noy‐Meir, I.
    Co‐ordinating Editor: Dr. Martin Zobel.
    corresponding author
    Department of Natural Resources, Newe‐Ya'ar Research Center, Agricultural Research Organization, P.O. Box 1021, Ramat Yishay 30095, Israel.
  • Descrição: Question: What is the mechanism that underlies long-term maintenance of high herbaceous productivity after a single application of phosphorus (4.5 gP m-2 and 9 gP m-2) in a hilly Mediterranean environment in a phosphorus-deficient ecosystem? Location: Inland, 15 km E of the Mediterranean coast, W Galilee, Israel (35°15'E, 33°01'N; 500 m asl). Methods: The experiment was established in 1988. Multi-year data on above-ground biomass, botanical composition, P content of vegetation and soil, and the grazing management context of the experiment were integrated to construct a feasible account of the P dynamics of the ecosystem. Results: The productivity of the herbaceous component already responded to P application in the first year. The effect on the shrubby component of the ecosystem was marginal. The available (bicarbonate extractable) P in the upper soil layer peaked in the year after application of P and then declined to the original level within 7 years. Despite the decline in available soil P, a high, fluctuating level of herbaceous biomass production was maintained for 20 years. Legume species (Fabaceae) became a prominent constituent of the herbaceous vegetation after the P pulse. Conclusions: The long-term shift in productivity of the herbaceous component of the grazed ecosystem was triggered by a nutritional pulse that induced a feedback loop based on changes in botanical composition of the herbaceous vegetation, the animal–vegetation interaction, grazing and supplementary feeding regimen of the cattle.
  • Editor: Oxford, UK: Opulus Press
  • Idioma: Chinês;Inglês
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