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Statements

Subject Item
n2:RIV%2F26296080%3A_____%2F11%3A2R000308%21RIV12-MZE-26296080
rdf:type
skos:Concept n16:Vysledek
rdfs:seeAlso
http://www.istro.cz
dcterms:description
This study was carried out in the soil under oak forest (Quercus suber L.) in humid Mediterranean condition in the Sierra del Hacho situated in the Spanish province Malaga with the aim to estimate the effect of understory vegetation cover on soil microbial transformation of nitrogen (vs. bare soil). Soil samples were taken representatively twice in consecutive years (July 2008 and February 2009, representing wet and dry part of the year, respectively) from the upper soil horizons to the depth of 10 cm. To quantify net rates of N mineralization and net nitrification (and/or immobilization) we have evaluated the net changes in ammonia- and nitrate-nitrogen contents extracted from homogenized soil samples during the laboratory incubation. The significant differences were found out between the individual times of soil sampling (wet vs. dry part of the year) indicating the different soil conditions for mineral nitrogen immobilization, mainly sources of available soil carbon in the corresponding part of the year. However the differences between net nitrogen mineralization in soil samples collected beneath vegetation cover and from bare soil without the vegetation cover were not so evident. Our results indicate the importance of temporal and spatial heterogeneity of key soil conditions, which may ultimately determine rates of nutrient turnover in this humid Mediterranean ecosystem. This study was carried out in the soil under oak forest (Quercus suber L.) in humid Mediterranean condition in the Sierra del Hacho situated in the Spanish province Malaga with the aim to estimate the effect of understory vegetation cover on soil microbial transformation of nitrogen (vs. bare soil). Soil samples were taken representatively twice in consecutive years (July 2008 and February 2009, representing wet and dry part of the year, respectively) from the upper soil horizons to the depth of 10 cm. To quantify net rates of N mineralization and net nitrification (and/or immobilization) we have evaluated the net changes in ammonia- and nitrate-nitrogen contents extracted from homogenized soil samples during the laboratory incubation. The significant differences were found out between the individual times of soil sampling (wet vs. dry part of the year) indicating the different soil conditions for mineral nitrogen immobilization, mainly sources of available soil carbon in the corresponding part of the year. However the differences between net nitrogen mineralization in soil samples collected beneath vegetation cover and from bare soil without the vegetation cover were not so evident. Our results indicate the importance of temporal and spatial heterogeneity of key soil conditions, which may ultimately determine rates of nutrient turnover in this humid Mediterranean ecosystem.
dcterms:title
Microbial activities related to the soil nitrogen transformation in humid mediterranean conditions Microbial activities related to the soil nitrogen transformation in humid mediterranean conditions
skos:prefLabel
Microbial activities related to the soil nitrogen transformation in humid mediterranean conditions Microbial activities related to the soil nitrogen transformation in humid mediterranean conditions
skos:notation
RIV/26296080:_____/11:2R000308!RIV12-MZE-26296080
n16:predkladatel
n18:ico%3A26296080
n5:aktivita
n17:P
n5:aktivity
P(QH72039)
n5:dodaniDat
n7:2012
n5:domaciTvurceVysledku
n9:8119120
n5:druhVysledku
n14:O
n5:duvernostUdaju
n10:S
n5:entitaPredkladatele
n12:predkladatel
n5:idSjednocenehoVysledku
212289
n5:idVysledku
RIV/26296080:_____/11:2R000308
n5:jazykVysledku
n11:eng
n5:klicovaSlova
humid mediterranean climate; soil; nitrogen; net mineralization; net nitrification
n5:klicoveSlovo
n8:net%20mineralization n8:humid%20mediterranean%20climate n8:net%20nitrification n8:soil n8:nitrogen
n5:kontrolniKodProRIV
[82B7D8BF82EE]
n5:obor
n15:GD
n5:pocetDomacichTvurcuVysledku
1
n5:pocetTvurcuVysledku
4
n5:projekt
n13:QH72039
n5:rokUplatneniVysledku
n7:2011
n5:tvurceVysledku
Ruiz-Sinoga, Jose Damian Novosádová, Irena Záhora, Jaroslav Fišerová, Helena