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Chrisoula Karakosta Laboratory of Rangeland Ecology Aristotle University of Thessaloniki, Greece

Mini Project. PhD t heme : “Patterns of secondary succession in old fields of Northern Greece”. Chrisoula Karakosta Laboratory of Rangeland Ecology Aristotle University of Thessaloniki, Greece. Course: Restoration Summer School 2009. Study area: Taxiarxis-Xalkidiki, Greece. Problem.

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Chrisoula Karakosta Laboratory of Rangeland Ecology Aristotle University of Thessaloniki, Greece

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  1. Mini Project PhDtheme : “Patterns of secondary succession in old fields of Northern Greece” Chrisoula Karakosta Laboratory of Rangeland Ecology Aristotle University of Thessaloniki, Greece Course: Restoration Summer School 2009

  2. Study area: Taxiarxis-Xalkidiki, Greece Problem Land use abandonment (agriculture) Result Vegetation evolution through secondary succession Introduction Research aim: To study mechanisms of vegetation succession on abandoned fields

  3. The main questions of the research are: • Which factors control the succession pattern, • ii) Which development model describes better this successional pattern and outline, • iii) How do life form and species richness change along successional gradient, • iv) Which are the effects of land use change on plant functional traits (PFTs).

  4. Methods – Data • Old fields representing a gradient of land use abandonment (1950, 1960, 1970, 1980, 1990, 2000, and 2007) • Vegetation sampling (spring-summer) • Soil samples (autumn) • Topographic, geological and climatic data • Trait data measurements (spring-summer)

  5. Methods – Data • species composition (point method) • species cover (point method) • biodiversity indices (quadrat) • aboveground biomass (harvesting) • -sorted out current years and old • growth components Vegetation data

  6. Methods – Data • N, P, K, Ca, Mg concentration • pH, organic matter • texture Soil data (depth: 2 lever 0-5cm and 5-20cm) • Altitude • Aspect • slope Topographic data Geological data derived from a geological maps Climatic data Collected from meteorological station

  7. Methods – Data TRAITMEASUREMENTS Measurements on:the dominant species in each old field Leaf traits: SLA=Specific leaf area LDMC=Leaf dry matter content LNC=Leaf nitrogen concentration LPC=Leaf phosphorus concentration LCC-Leaf carbon concentration Stem traits: StDMC=Stem dry matter content

  8. Pending • -Laboratory work • Chemical analysis • -Data analysis • Data collection for species traits from bibliography (life forms, life cycle, Pollination mode, dispersal mode, Clonality, etc.) • - Statistical analysis

  9. Thank you for your attention !!!

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