scholarly journals Consequences of different cutting regimes on regrowth and nutrient stoichiometry of Sparganium erectum L. and Potamogeton natans L.

2017 ◽  
Vol 33 (9) ◽  
pp. 1420-1427
Author(s):  
K.D. Bal ◽  
V. Verschoren ◽  
J.R. Sara ◽  
P. Meire ◽  
J. Schoelynck
Keyword(s):  
Nutrient Stoichiometry ◽  
Cutting Regimes ◽  
Potamogeton Natans ◽  
Sparganium Erectum

Plant diversity and species richness of Ljubljana marsh grasslands under the influence of different cutting and fertilizing regimes

2009 ◽  
Vol 57 (2) ◽  
pp. 197-203 ◽  
Author(s):  
T. Sinkovč
Keyword(s):  
Species Richness ◽  
Plant Diversity ◽  
Grassland Management ◽  
Botanical Composition ◽  
Significant Negative Effect ◽  
Negative Effect ◽  
Cutting Regimes ◽  
N Rates ◽  
Exploitation Intensity ◽  
Plot Design

The botanical composition of grasslands determines the agronomic and natural values of swards. Good grassland management usually improves herbage value, but on the other hand it frequently decreases the plant diversity and species richness in the swards. In 1999 a field trial in a split-plot design with four replicates was therefore established on the Arrhenatherion type of vegetation in Ljubljana marsh meadows in order to investigate this relationship. Cutting regimes (2 cuts — with normal and delayed first cut, 3 cuts and 4 cuts per year) were allocated to the main plots and fertiliser treatments (zero fertiliser — control, PK and NPK with 2 or 3 N rates) were allocated to the sub-plots. The results at the 1 st cutting in the 5 th trial year were as follows: Fertilising either with PK or NPK had no significant negative effect on plant diversity in any of the cutting regimes. In most treatments the plant number even increased slightly compared to the control. On average, 20 species were listed on both unfertilised and fertilised swards. At this low to moderate level of exploitation intensity, the increased number of cuts had no significant negative effect on plant diversity either (19 species at 2 cuts vs. 20 species at 3 or 4 cuts). PK fertilisation increased the proportion of legumes in the herbage in the case of 2 or 3 cuts. The proportion of grasses in the herbage increased in all the fertilisation treatments with an increased numbers of cuts. Fertiliser treatment considerably reduced the proportion of marsh horsetail ( Equisetum palustre ) in the herbage of the meadows. This effect was even more pronounced at higher cut numbers. The proportion of Equisetum palustre in the herbage was the highest in the unfertilised sward with 2 cuts (26.4 %) and the lowest in the NPK-fertilised sward with 4 cuts (1.4%).

Aquatic vegetation (Lemnetea, Potametea) of the Ob river floodplain (within the limits of Aleksandrovskiy district of Tomsk region)

2008 ◽  
pp. 68-75 ◽  
Author(s):  
G. S. Taran
Keyword(s):  
Western Siberia ◽  
Aquatic Vegetation ◽  
Ceratophyllum Demersum ◽  
River Floodplain ◽  
Ob River ◽  
Tomsk Region ◽  
Potamogeton Natans

In the Ob river floodplain between the mouths of its tributaries Vakh and Tym (within the limits of Aleksandrovskiy district of Tomsk region), phytocoenoses belonging to 9 associations and 2 communities of Braun-Blanquet classification vegetation classes are listed. Class Lemnetea is represented by associations Ricciocarpetum natantis (Segal 1963) Tx. 1974, Lemnetum trisulcae Soó 1927, Stratiotetum aloidis Miljan 1933; class Potametea is done by asso­ciations Potametum perfoliati Koch 1926, Myriophylletum sibirici Taran 1998, Myriophylletum verticillati Soó 1927, Potametum graminei Koch 1926, Potametum pectinati Carstensen 1955, Nymphoidetum peltatae (All. 1922) Bellot 1951, as well as Sagittaria natans and Potamogeton natans—Ceratophyllum demersum communities. The syntaxa distribution in Western Siberia and adjoining territories is characterized.

Soil moisture and texture primarily control the soil nutrient stoichiometry across the Tibetan grassland

2018 ◽  
Vol 622-623 ◽  
pp. 192-202 ◽  
Author(s):  
Liming Tian ◽  
Lin Zhao ◽  
Xiaodong Wu ◽  
Hongbing Fang ◽  
Yonghua Zhao ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Soil Nutrient ◽  
Nutrient Stoichiometry

How to optimize ultrashort pulse laser interaction with glass surfaces in cutting regimes?

2015 ◽  
Vol 336 ◽  
pp. 364-374 ◽  
Author(s):  
Nadezhda M. Bulgakova ◽  
Vladimir P. Zhukov ◽  
Adam R. Collins ◽  
Danijela Rostohar ◽  
Thibault J.-Y. Derrien ◽  
...  
Keyword(s):  
Pulse Laser ◽  
Ultrashort Pulse ◽  
Laser Interaction ◽  
Ultrashort Pulse Laser ◽  
Cutting Regimes ◽  
Glass Surfaces
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