TY - JOUR AU - Pavlović, Pavle AU - Kostić, Olga AU - Jarić, Snežana AU - Gajić, Gordana AU - Pavlović, Dragana AU - Pavlović, Marija AU - Mitrović, Miroslava PY - 2020/12/25 Y2 - 2024/03/28 TI - The effects of leaf litter chemistry and anatomical traits on the litter decomposition rate of Quercus frainetto Ten. and Quercus cerris L. in situ JF - Archives of Biological Sciences JA - Arch Biol Sci VL - 72 IS - 4 SE - Articles DO - 10.2298/ABS200902048P UR - https://www.serbiosoc.org.rs/arch/index.php/abs/article/view/5800 SP - 543-553 AB - <p><strong>Paper description:</strong></p><ul><li>Litter decomposition is a fundamental ecosystem process.</li><li>A one-year experiment was performed to analyze the influence of the chemical composition of and the anatomical structures of <em>Quercus frainetto </em>and <em> cerris</em> leaf litter on the decomposition rate in natural conditions.</li><li><em> frainetto</em> litter decomposed more readily than <em>Q. cerris</em> litter. Differences in chemical composition and anatomical structure of leaf litter can be a predictive tool for its decomposability and ecosystem functioning.</li><li>Global environmental changes will influence litter quality and its decomposition rate in the future.</li></ul><p><strong>Abstract:</strong> This paper presents the results of a one-year decomposition experiment on <em>Quercus frainetto</em> Ten. and <em>Quercus cerris</em> L. leaf litter in natural conditions. The decomposition rate constant was 0.831 yr<sup>−1</sup> (<em>Q. frainetto</em>) and 0.458 yr<sup>−1</sup> (<em>Q. cerris</em>). For the initial chemical composition of the oaks’ litter, differences were not found in concentrations of lignin and fats, waxes and oil fractions, but were found for water-soluble matter, hemicellulose and cellulose. Later decomposition stages indicated that lignin and fats, waxes and oil fractions influenced differences in both oaks’ litter decay rates. Anatomical analysis revealed differences between the oaks in leaf mesophyll and epidermis but not in the entire leaf and lower epidermis<em>.</em> Results after 12 months of the experiment revealed that 48.04% of the entire leaf, 53.30% of mesophyll, 32.93% of lignified upper and 47.67% of lower epidermis in <em>Q. frainetto</em>, and 28.70% of the entire leaf, 31.60% of mesophyll, 25.17% of lignified upper and 20.93% of lower epidermis in <em>Q. cerris</em> were decomposed. Reduction in leaf thickness mainly was caused by the reduction of mesophyll parenchyma, composed of easily degradable plant materials. Leaf tissues with the most recalcitrant plant materials were lignified upper epidermis, covered by a thick cuticle composed of fats and waxes, and xylem within the leaf veins.</p> ER -