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Rough wave-like heaped overburden promotes establishment of woody vegetation while leveling promotes grasses during unassisted post mining site development

J. Frouz, O. Mudrák, E. Reitschmiedová, A. Walmsley, P. Vachová, H. Šimáčková, J. Albrechtová, J. Moradi, J. Kučera,

. 2018 ; 205 (-) : 50-58. [pub] 20170928

Language English Country England, Great Britain

Document type Journal Article

Persistent link   https://www.medvik.cz/link/bmc19001168

Geodiversity plays an important role in species establishment during spontaneous succession. At post-mining sites in the Czech Republic in 2003, we established plots in which the surface of the heaped overburden was either kept wave-like or leveled. Based on surveys conducted from 2006 to 2015, leveled plots were increasingly dominated by grasses and herbs (and especially by the grass Calamagrostis epigejos) while the wave-like plots were increasingly dominated by the trees Salix caprea and Betula pendula. In 2015, a detailed survey was conducted of the dominant species. Both S. caprea and B. pendula occurred more often in wave-like plots than in leveled plots; this was particularly true for trees taller than 1 m, which were absent in leveled plots. In wave-like plots, leaf and root biomasses of both woody species were higher on the wave slopes than on the wave depressions. Nitrogen content was higher but content stress indicating proline in leaves of S. caprea was lower in wave-like plots than in leveled plots. In wave-like plots, both woody species occurred mainly on wave slopes but C. epigejos occurred mainly in the depressions. We speculate that trees were more abundant in wave-like plots than in leveled plots because the waves trapped tree seeds and snow and because the soil porosity was greater in wave-like than in leveled plots. Grasses may have preferred the leveled plots because soil porosity was lower and clay content was higher in leveled than in wave-like plots.

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$a Frouz, Jan $u Institute of Environmental Studies, Charles University in Prague, Benátská 2, CZ 128 00, Prague, Czech Republic; Institute of Soil Biology and SoWa RI, Biology Centre AS CR, Na Sádkách 7, CZ 370 05, České Budějovice, Czech Republic; Charles University Environmental Center, José Martího 407/2, CZ 162 00, Prague, Czech Republic. Electronic address: frouz@natur.cuni.cz.
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$a Walmsley, Alena $u Department of Land Use and Development, Faculty of Environmental Science, Czech University of Life Sciences, Kamýcká 129, CZ 165 21, Prague, Czech Republic.
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