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Statements

Subject Item
n2:RIV%2F67985939%3A_____%2F12%3A00380892%21RIV13-GA0-67985939
rdf:type
n10:Vysledek skos:Concept
dcterms:description
A large increase of grasses Calamagrostis epigejos, Bromus inermis and Brachypodium pinnatum has often been observed in many regions enriched by higher nitrogen (N) wet deposition inputs. Competitive relationships between these grasses under enhanced N loads have not yet been studied. Therefore an outdoor experiment was established which involved monocultures of Calamagrostis, Bromus and Brachypodium and their 1:1 mixtures in containers under two N treatments, i.e., unfertilized and fertilized (+50 kg N ha1). In monocultures, the total aboveground biomass of Calamagrostis, Bromus and Brachypodium were 1.1, 3.6 and 2.5 times higher respectively due to enhanced N fertilization. Relative crowding and aggressivity coefficients indicate that Calamagrostis and Bromus dominate when mixed with Brachypodium at both levels of N availability. When mixed with Bromus, Calamagrostis is the poorer competitor at lower N loads, however, it can be dominating in N fertilized treatments. A large increase of grasses Calamagrostis epigejos, Bromus inermis and Brachypodium pinnatum has often been observed in many regions enriched by higher nitrogen (N) wet deposition inputs. Competitive relationships between these grasses under enhanced N loads have not yet been studied. Therefore an outdoor experiment was established which involved monocultures of Calamagrostis, Bromus and Brachypodium and their 1:1 mixtures in containers under two N treatments, i.e., unfertilized and fertilized (+50 kg N ha1). In monocultures, the total aboveground biomass of Calamagrostis, Bromus and Brachypodium were 1.1, 3.6 and 2.5 times higher respectively due to enhanced N fertilization. Relative crowding and aggressivity coefficients indicate that Calamagrostis and Bromus dominate when mixed with Brachypodium at both levels of N availability. When mixed with Bromus, Calamagrostis is the poorer competitor at lower N loads, however, it can be dominating in N fertilized treatments.
dcterms:title
The effect of nitrogen addition on biomass production and competition in three expansive tall grasses The effect of nitrogen addition on biomass production and competition in three expansive tall grasses
skos:prefLabel
The effect of nitrogen addition on biomass production and competition in three expansive tall grasses The effect of nitrogen addition on biomass production and competition in three expansive tall grasses
skos:notation
RIV/67985939:_____/12:00380892!RIV13-GA0-67985939
n10:predkladatel
n11:ico%3A67985939
n3:aktivita
n4:P n4:I
n3:aktivity
I, P(ED1.1.00/02.0073), P(GA526/06/0556), P(QJ1220007)
n3:cisloPeriodika
NOV 2012
n3:dodaniDat
n7:2013
n3:domaciTvurceVysledku
n13:6161472
n3:druhVysledku
n17:J
n3:duvernostUdaju
n8:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
133169
n3:idVysledku
RIV/67985939:_____/12:00380892
n3:jazykVysledku
n19:eng
n3:klicovaSlova
aboveground biomass; aggressivity; crowding coefficient; Nitrogen; tall grasses
n3:klicoveSlovo
n5:crowding%20coefficient n5:aboveground%20biomass n5:Nitrogen n5:tall%20grasses n5:aggressivity
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[DC741C91ED96]
n3:nazevZdroje
Environmental Pollution
n3:obor
n14:EF
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:projekt
n9:ED1.1.00%2F02.0073 n9:GA526%2F06%2F0556 n9:QJ1220007
n3:rokUplatneniVysledku
n7:2012
n3:svazekPeriodika
170
n3:tvurceVysledku
Fiala, Karel Tůma, I. Holub, Petr
n3:wos
000308450100026
s:issn
0269-7491
s:numberOfPages
6
n16:doi
10.1016/j.envpol.2012.07.007