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Nutrient content in the needles of main woody species in relation to foraging ecology of large herbivores in Europe
Köhlerová, Markéta ; Hejcmanová, Pavla (advisor) ; Holá, Michaela (referee)
The aim of the thesis was to determine the content of principle macroelements and fibre fractions in needles of five woody species (Taxus baccata, Pinus sylvestris, Abies alba, Picea abies, Larix decidua) with regard to the nutrition of wildlife and forage resources. See if differ substantively macro nutrient elements by different ages needles. The individual objectives was to further determine, firstly, if different levels of major and fiber between tree species and secondly if different levels of major and fiber between the years of needles. Annual needles has a higher content of macroelements and lower fiber content than two years. The theoretical part deals with herbivores and their foraging strategy.Five European indigenous coniferous species were chosen: P. sylvestris, P. abies, A. alba, L. decidua and T. baccata. There were selected four locations: towns of Mšeno, Nové Strašecí and Oldřichov v Hájích and Příbram`s territory where the samples of conifers were collected. After drying the samples in the oven there were laboratory tests carried out/conducted, based on which a subsequent statictical evaluation was performed. The actual evaluation was focused on contents of macroelements N, P, K, Ca and Mg. In addition also ratios of the macroelements (N/P, Ca/N and K / (Ca + Mg) were considered. As regards fibre analysis, we focused on content of ADF, NDF and lignin. Results showed that annual needles, compared to biennials, have higher content of macroelements and lower fibre content. The highest values of macroelements and fibre content were found in T. baccata. P. abies and P. sylvestris had similar results.
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