Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Johannes-Günter Kohl"'
Publikováno v:
Aquatic Botany. 69:359-365
Two contrasting ecotypes of Phragmites australis adapted to high (Lake Templiner See: Templ) and low (Lake Parsteiner See: Par1) N supply were investigated regarding the leaf content of photosynthetic pigments. Pigment contents were greatest in middl
Publikováno v:
Folia Geobotanica. 35:389-402
The morphology, productivity and C/N-balance of 9 different clones ofPhragmites australis planted in 1997 in a degraded fen area of 40,000 m2 was investigated in order to estimate the degree of variation between the genotypes. The planted reed clones
Publikováno v:
Wetlands Ecology and Management. 8:425-433
Mowing and burning of Phragmitesaustralis-stands have been recommended in the recentliterature as management tools for both protection andcontrol, and both favourable and detrimental effectsof these treatments were actually observed. This studyaims t
Publikováno v:
Wetlands Ecology and Management. 8:447-457
The shoot growth during the vegetation period andshoot morphology at the end of the season wereinvestigated in four monoclonal aquatic reed stands(Phragmites australis) with differentproductivity in Berlin and Brandenburg. Investigationswere conducte
Publikováno v:
Fundamental and Applied Limnology. 146:385-395
The aim of this study was to test the hypothesis that toxicity of Microcystis aeruginosa to Daphnia galeata can be explained by microcystins. For that purpose, the relationship between the strength of toxic effect and microcystin ingestion rate (amou
Publikováno v:
Aquatic Botany. 64:291-302
Parameters of convective ventilation and amino acid patterns in basal culm internodes of Phragmites australis (Cav.) Trin. ex Steud. were studied at four sites in the Danube Delta (Romania) in May 1997. The considerable stand-specific differences in
Publikováno v:
Aquatic Botany. 64:235-246
A selected reed stand ( Phragmites australis ) at a shallow lake near Berlin was investigated from 1992 to 1995. This reed stand is clearly divided into four visually distinguishable clusters. The study focuses on the clonal distribution within the w
Publikováno v:
Journal of Plankton Research. 21:1489-1500
The possible effects of five Microcystis aeruginosa strains (two unicellular and three colony forming) on the filtering and feeding behavior of Daphnia galeata were investigated to clarify the mechanisms of the inhibitory effect on the ingestion rate
Autor:
Johannes-Günter Kohl, Andreas Kleeberg
Publikováno v:
Hydrobiologia. 394:153-161
Two series of laboratory experiments mimicking dredging of the uppermost phosphorus (P) rich sediment layers of the shallow eutrophic L. Muggelsee were carried out to study the extent of P release from deeper sediment layers, and changes in P mobilit
Publikováno v:
Aquatic Botany. 60:221-240
The nitrogen content of different internodes and the dissolved amino acids and sugars of the basal culm internodes of Phragmites australis (Cav.) Trin. ex Steud. were studied monthly in 1994 to estimate the carbon/nitrogen balance at eight sites and