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Nitrogen addition and harvest frequency rather than initial plant species composition determine vertical structure and light interception in grasslands.

Petersen U, Isselstein J - AoB Plants (2015)

Bottom Line: In biodiversity experiments based on seeded experimental communities, species richness and species composition exert a strong influence on canopy structure and can lead to an improved use of aboveground resources.However, the allocation of biomass in response to cutting and fertilization differed among the sward types.Management had a much stronger influence on structure and light interception than plant species composition in this grassland experiment.

View Article: PubMed Central - PubMed

Affiliation: Department of Crop Sciences, University of Göttingen, Von-Siebold-Str. 8, D-37075 Göttingen, Germany Present address: Johann Heinrich von Thünen Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries, Institute of Climate-Smart Agriculture (AK), Bundesallee 50, D-38116 Braunschweig, Germany Ute_Petersen@gmx.net.

No MeSH data available.


Related in: MedlinePlus

Leaf area ratio (median, first and third quartiles) per experimental factor in July 2009. For abbreviations of factors, refer to Table 1. Asterisks denote significant differences of factor levels compared with the reference level (sward control, utilization 1 cut, nutrients x) in a linear model (with log transformation of the response variable for comparison of treatments). ***P < 0.001, **P < 0.01, *P < 0.05.
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PLV089F5: Leaf area ratio (median, first and third quartiles) per experimental factor in July 2009. For abbreviations of factors, refer to Table 1. Asterisks denote significant differences of factor levels compared with the reference level (sward control, utilization 1 cut, nutrients x) in a linear model (with log transformation of the response variable for comparison of treatments). ***P < 0.001, **P < 0.01, *P < 0.05.

Mentions: The LAR was influenced mainly by management, but also by the amount of grasses present in a sward (Fig. 5). Overall, the –Dic-swards had a higher LAR than the Co-swards. The comparison of the single treatments, however, did not show any sward or species richness effects. The highest LAR was found in the fertilized –Dic-swards cut three times.Figure 5.


Nitrogen addition and harvest frequency rather than initial plant species composition determine vertical structure and light interception in grasslands.

Petersen U, Isselstein J - AoB Plants (2015)

Leaf area ratio (median, first and third quartiles) per experimental factor in July 2009. For abbreviations of factors, refer to Table 1. Asterisks denote significant differences of factor levels compared with the reference level (sward control, utilization 1 cut, nutrients x) in a linear model (with log transformation of the response variable for comparison of treatments). ***P < 0.001, **P < 0.01, *P < 0.05.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4584960&req=5

PLV089F5: Leaf area ratio (median, first and third quartiles) per experimental factor in July 2009. For abbreviations of factors, refer to Table 1. Asterisks denote significant differences of factor levels compared with the reference level (sward control, utilization 1 cut, nutrients x) in a linear model (with log transformation of the response variable for comparison of treatments). ***P < 0.001, **P < 0.01, *P < 0.05.
Mentions: The LAR was influenced mainly by management, but also by the amount of grasses present in a sward (Fig. 5). Overall, the –Dic-swards had a higher LAR than the Co-swards. The comparison of the single treatments, however, did not show any sward or species richness effects. The highest LAR was found in the fertilized –Dic-swards cut three times.Figure 5.

Bottom Line: In biodiversity experiments based on seeded experimental communities, species richness and species composition exert a strong influence on canopy structure and can lead to an improved use of aboveground resources.However, the allocation of biomass in response to cutting and fertilization differed among the sward types.Management had a much stronger influence on structure and light interception than plant species composition in this grassland experiment.

View Article: PubMed Central - PubMed

Affiliation: Department of Crop Sciences, University of Göttingen, Von-Siebold-Str. 8, D-37075 Göttingen, Germany Present address: Johann Heinrich von Thünen Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries, Institute of Climate-Smart Agriculture (AK), Bundesallee 50, D-38116 Braunschweig, Germany Ute_Petersen@gmx.net.

No MeSH data available.


Related in: MedlinePlus