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Otto Heinemeyer
Soil waterBiomassAgronomyField experimentBiology
30Publications
16H-index
2,417Citations
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Publications 31
Newest
Abstract In soil ecology, microbial parameters have been identified as sensitive indicators of changes in the soil environment. The Braunschweig FACE project provided the opportunity to study the effects of elevated CO 2 (550 μmol mol −1 ) as compared to ambient CO 2 (370 μmol mol −1 ) on total microbial biomass (C mic ), C mic -to-C org ratio and the fungal-to-bacterial respiratory ratio together with total C org , N t , C:N ratio and pH over a six-year period. Field management followed a typic...
17 CitationsSource
#2Andreas PacholskiH-Index: 14
Last. Anette GiesemannH-Index: 16
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Effects of elevated atmospheric CO2 concentrations on barley, sugar beet and wheat in a rotation: examples from the Braunschweig carbon project Apart from changes in temperature and precipitation patterns ‘climate change’ is driven by and entails marked changes in atmospheric chemistry. The future increase of the atmospheric CO2-concentration is the most prominent and undisputable change of the atmosphere. Elevated CO2 (e[CO2]) is known to stimulate leaf level photosynthesis and to reduce leaf t...
2 Citations
Last. Otto HeinemeyerH-Index: 16
view all 7 authors...
12 CitationsSource
#1Ernst-August KaiserH-Index: 12
#2Gabriele WalenzikH-Index: 2
Last. Otto HeinemeyerH-Index: 16
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8 CitationsSource
#2Manuela RöverH-Index: 4
Last. Otto HeinemeyerH-Index: 16
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2 Citations
#1Manuela RöverH-Index: 4
Last. Otto HeinemeyerH-Index: 16
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4 Citations
#1Manuela RöverH-Index: 4
#2Otto HeinemeyerH-Index: 16
Last. Ernst-August KaiserH-Index: 12
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Abstract The spatial heterogeneity and the temporal variability of N 2 O emission rates were examined in an arable soil. The N 2 O emission rates were measured using soil cover boxes. Rates were measured systematically at regular distances (7 m) on a sampling grid (9 rows×9 columns) across a field plot site (60×63 m). There were two sampling periods, one before (March, 4 flux rate measurements) and one after (May, 6 flux rate measurements) a field experiment with three crops and three N-fertiliz...
61 CitationsSource
#1Manuela RöverH-Index: 4
#2Otto HeinemeyerH-Index: 16
Last. Ernst-August KaiserH-Index: 12
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Abstract Nitrous oxide (N2O) release rates were measured from an fertilized and unfertilized plot on silty loam (Gleyic Luvisol) cropped with winter wheat. Rates were estimated using a closed soil cover box technique throughout a continuous investigation period of 12 months. The 12 months of investigation were separated into the cropping period (March to November) and the winter period (December to February). Soil management and all N-applications were made during the cropping period. The applic...
204 CitationsSource
#1Ernst-August KaiserH-Index: 12
#2K. KohrsH-Index: 2
Last. Otto HeinemeyerH-Index: 16
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N2O emission rates from a sandy loam soil were measured in a field experiment with 2 years of perennial forage crops (ryegrass, ryegrass-red clover, red clover) and 1 year of spring barley cultivation. Spring barley was sown after the incorporation of the forage crop residues. All spring barley plots received 40 kg N ha–1 N fertiliser. Ryegrass, ryegrass-red clover and red clover plots were fertilised with 350 kg N ha–1, 175 kg N ha–1 and 0 kg N ha–1, respectively. From June 1994 to February 199...
38 CitationsSource
#1Ernst-August KaiserH-Index: 12
#2K. KohrsH-Index: 2
Last. Jean Charles MunchH-Index: 43
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Abstract Throughout 33 months nitrous oxide (N2O) release rates were measured from a field experiment comparing crop and N-fertilization treatments laid out on a luvisol derived from loess. Winter wheat, winter barley, winter rape and sugar beet were cultivated using conventional soil management. Each crop was fertilized at three rates of N application (N 1.0: usual, N 0.5: 50% of usual, N 0.0: unfertilized). N2O losses obtained were correlated with physical and chemical soil properties as well ...
247 CitationsSource
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