<abstract xmlns="http://www.w3.org/1999/xhtml">Variability in <italic>f</italic><sc>rnpp</sc>, defined as the fraction of root net primary productivity (RNPP) to total net primary productivity (TNPP) [above-ground net primary productivity (ANPP) + RNPP] were examined through synthesis of 40 samples from available field biomass data assessed by in-growth core and obtained at 13 grassland sites situated in different altitudes in the Czech and Slovak Republics. Results indicate that <italic>f</italic><sc>rnpp</sc> varied from 0.05 to 0.59 across the compared sites. Submontane wet meadows had larger <italic>f</italic><sc>rnpp</sc> and dry lowland grasslands had smaller <italic>f</italic><sc>rnpp</sc> However, extreme conditions of mountain sites were reflected in a decrease of <italic>f</italic><sc>rnpp</sc>. Thus the relationship between values of <italic>f</italic><sc>rnpp</sc> at different sites and altitudes was indicated by quadratic regression with the highest <italic>f</italic><sc>rnpp</sc> coefficients in middle altitudes, where there were sufficient amounts of precipitation together with not so extremely cold temperatures. Results also indicate a high variability in <italic>f</italic><sc>rnpp</sc> at a regional scale and along increasing altitude. These data show how important and different roles grasslands can play in accumulation and turnover of root biomass.</abstract>

Variability in frnpp, defined as the fraction of root net primary productivity (RNPP) to total net primary productivity (TNPP) [above-ground net primary productivity (ANPP) + RNPP] were examined through synthesis of 40 samples from available field biomass data assessed by in-growth core and obtained at 13 grassland sites situated in different altitudes in the Czech and Slovak Republics. Results indicate that frnpp varied from 0.05 to 0.59 across the compared sites. Submontane wet meadows had larger frnpp and dry lowland grasslands had smaller frnpp However, extreme conditions of mountain sites were reflected in a decrease of frnpp. Thus the relationship between values of frnpp at different sites and altitudes was indicated by quadratic regression with the highest frnpp coefficients in middle altitudes, where there were sufficient amounts of precipitation together with not so extremely cold temperatures. Results also indicate a high variability in frnpp at a regional scale and along increasing altitude. These data show how important and different roles grasslands can play in accumulation and turnover of root biomass.

Proportion of Root Production in Several Temperate Grasslands of Central Europe

Department of Vegetation Ecology, Institute of Botany, Academy of Sciences of the Czech Republic, Lidická 25, 602 00 Brno, Czech Republic;

Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of Agronomy, Mendel University in Brno, Zemčdčlská 1, 613 00 Brno, Czech Republic;

Global Change Research Centre, Academy of Sciences of the Czech Republic, Bëlidla 4a, 603 00 Brno, Czech Republic;

Ekológia (Bratislava)

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Proportion of Root Production in Several Temperate Grasslands of Central Europe"}

Variability in frnpp, defined as the fraction of root net primary productivity (RNPP) to total net primary productivity (TNPP) [above-ground net primary...

Proportion of Root Production in Several Temperate Grasslands of Central Europe

Publié en ligne: 21 août 2014

Pages: 232 - 241

DOI: https://doi.org/10.2478/eko-2014-0022

Mots clés
altitude, biomass partitioning, grassland, net primary productivity, precipitation, temperature

© 2014 Karel Fiala et. al.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Proportion of Root Production in Several Temperate Grasslands of Central Europe

Publié en ligne: 21 août 2014

Pages: 232 - 241

DOI: https://doi.org/10.2478/eko-2014-0022

Mots clésaltitude, biomass partitioning, grassland, net primary productivity, precipitation, temperature

© 2014 Karel Fiala et. al.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
altitude, biomass partitioning, grassland, net primary productivity, precipitation, temperature