Joachim Saborowski

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To investigate early salt acclimation mechanisms in a salt-tolerant poplar species (Populus euphratica), the kinetics of molecular, metabolic, and physiological changes during a 24-h salt exposure were measured. Three distinct phases of salt stress were identified by analyses of the osmotic pressure and the shoot water potential: dehydration, salt(More)
This study aims at the development of a model to predict forest stand variables in management units (stands) from sample plot inventory data. For this purpose we apply a non-parametric most similar neighbour (MSN) approach. The study area is the municipal forest of Waldkirch, 13 km north-east of Freiburg, Germany, which comprises 328 forest stands and 834(More)
Spatio-temporal distribution patterns of species in response to natural and anthropogenic drivers provide insight into the ecological processes that determine community composition. We investigated determinants of ecological structure in a species assemblage of 4 closely related primate species of the family Cheirogaleidae (Microcebus berthae, Microcebus(More)
For technical and other reasons there is a dilemma that data providers cannot find an appropriate way to redistribute spatial forest data and data users who need spatial data cannot access and integrate available forest resources information. To overcome this dilemma, this paper proposed a spatial forest information system based on Web service using an open(More)
In managed forests, the occurrence of deadwood (DW) can be regarded as a stochastically rare event with strong clumping and high local variability (Meyer in Forstwissenschaftliches Centralblatt 118:167–180, 1999). Traditional sampling techniques, such as Fixed Area Sampling, Angle Count Sampling and Line Intersect Sampling, do not regard this fact and may(More)
For a current inventory using double sampling for stratification with a reduced second-phase sample size, compared with a previous inventory, we develop a three-phase sampling procedure that exploits plot data from the previous inventory or their updates based on a growth model to increase precision. The three-phase procedure combines double sampling for(More)
Durch eine qualifizierte Wahl der Stichprobenumfänge bei holzanatomischen Untersuchungen soll einerseits der notwendige Arbeitsaufwand auf ein Minimum reduziert werden. Andererseits muß eine ausreichende Testschärfe gewährleistet sein, da sonst ein eventuell nicht signifikantes Testergebnis keinerlei Absicherung der Nullhypothese impliziert. Wie dies bei(More)
Im Rahmen eines umfangreichen Projektes wird am Institut für Forstbenutzung unter anderem die Variabilität der Verkernung bei jungen Douglasien in bezug auf Standort, Sandraum und Baumalter untersucht (Hapla 1992). Der in dieser Arbeit vorgestellte methodische Ansatz zur Schätzung der Verkernung von Bäumen zeigt, daß mit wenigen Stammscheiben eine(More)