Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Gunnar Ogner"'
Publikováno v:
Communications in Soil Science and Plant Analysis. 35:369-384
A humus sample and a mineral soil sample were collected to investigate different sample pretreatments and their effects on the quality (mean value and uncertainty) of soil chemical data. Thirty-four humus subsamples and sixty mineral subsamples were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ec6b58b693d9dcdc3f9ebd6fe7562fa
https://doi.org/10.1081/css-120029718
https://doi.org/10.1081/css-120029718
Publikováno v:
Physiologia Plantarum. 113:533-540
Plant growth and adaptation to cold and freezing temperatures in a CO 2 -enriched atmosphere have received little attention despite their predicted effects on plant distribution and productivity. In this study we looked at the interaction between ele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94c78750407110ff9915aeb87f43425b
https://doi.org/10.1034/j.1399-3054.2001.1130412.x
https://doi.org/10.1034/j.1399-3054.2001.1130412.x
Publikováno v:
Communications in Soil Science and Plant Analysis. 32:675-684
Analyses of forest soils are widely used to monitor the effects of human activity on our environment. The overall quality of analytical data must, therefore, be sufficient to answer questions with regard to environmental changes taking place througho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab4f5e5e04586dc4bc7fd77fa5422ba5
https://doi.org/10.1081/css-100103900
https://doi.org/10.1081/css-100103900
Autor:
Gunnar Ogner, Inger Aandahl Raastad
Publikováno v:
Communications in Soil Science and Plant Analysis. 28:1311-1321
Diethylaminoethyl cellulose (DEAE cellulose), a weak anion exchange resin, has been used to isolate dissolved organic matter (DOM) from soil solutions collected from three different soil types, to investigate the amount of DOM isolated from soil solu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1ad27966c5e749685d31f23263e4b49
https://doi.org/10.1080/00103629709369876
https://doi.org/10.1080/00103629709369876
Publikováno v:
J. Environ. Monit.. 6:621-623
A method for determination of the climate gases CH4, CO2 and N2O in air samples and soil atmosphere was developed using GC-MS. The method uses straightforward gas chromatography (separation of the gases) with a mass spectrometric detector in single i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a15e9678abd098dd7ad75d996ab12f0
https://doi.org/10.1039/b401315h
https://doi.org/10.1039/b401315h
Publikováno v:
Environmental Pollution. 89:55-58
This work is based on a project where the effect of ozone ( 3 ) on hexane-soluble components of Picea abies needles was investigated ( Ogner (1993) Environ. Pollut. , 82 , 223-9 ). The trees representing six clones of Picea abies were fumigated in op
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ef62796fa5e29a10571fb907f215162
https://doi.org/10.1016/0269-7491(94)00045-f
https://doi.org/10.1016/0269-7491(94)00045-f
Autor:
Gunnar Ogner
Publikováno v:
Environmental Pollution. 82:223-229
The effect of ozone (10, 200 or 400 microg m(-3) on hexane- and dichloromethane-soluble components of Picea abies needles was determined by fumigating potted grafts from mature trees. The trees (55 and 125 years, 2.5 m high), representing six clones
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccb56e833a7fe1ed04918b2ccb302aa9
https://doi.org/10.1016/0269-7491(93)90123-6
https://doi.org/10.1016/0269-7491(93)90123-6
Autor:
Gunnar Ogner
Publikováno v:
Environmental pollution (Barking, Essex : 1987). 82(2)
The effect of ozone (10, 200, or 400 microg m(-3)), on foliar nutrient concentrations of Picea abies were determined by fumigating potted grafts from mature trees (55 and 125 years), representing six clones, in open-top chambers at two locations in N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0257c6087499253326a50a21d2a86601
https://pubmed.ncbi.nlm.nih.gov/15091789
https://pubmed.ncbi.nlm.nih.gov/15091789
Publikováno v:
Trees. 12:289
Concentrations of pigments in needles of yellowish Norway spruce [Picea abies (L.) Karst] trees suffering from either N, Mg or K deficiency in field sites in southeast Norway are reported. The yellowish trees had a considerably lower (roughly 50%) pi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea696bda0ed8d1eda4df594cd147323c
https://doi.org/10.1007/s004680050153
https://doi.org/10.1007/s004680050153
Autor:
Gunnar Ogner
Publikováno v:
Geoderma. 23:1-10
The carbohydrates of humic and fulvic acids were investigated using methylation analysis. The humic acid contains slightly more rhamnose and fucose than does fulvic acid and raw humus, the arabinose content of fulvic acid is less when compared to tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58409c470bb197cb6bee2bc619e3be9a
https://doi.org/10.1016/0016-7061(80)90045-2
https://doi.org/10.1016/0016-7061(80)90045-2