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7051 - 7060 of 7230 items
April 1999
Erstmalige Zucht des Messerfisches Rhamphichthys sp. (Gymnotiformes, Rhamphichthydiae) durch experimentelle Variation exogener Parameter mit Bemerkungen zur Entwicklung des elektrischen Organs
Frank Kirschbaum; Liane Wieczorek
Fortpflanzungsbiologie der Aquarienfische (2) / Hrsg.: Rüdiger Riehl ; Hartmut Greven. - Bornheim : Schmettkamp, 1999. - S. 115-123
March 1999
An incubator for the simulation of a fluctuating light climate in studies of planktonic primary productivity
Frank Gervais; Thomas Hintze; Horst Behrendt
International review of hydrobiology. - 84(1999)1, S. 49-60
March 1999
An algebraic/graphical tool to compare ecosystems with respect to their pollution
R. Brüggemann; S. Pudenz; K. Voigt; A. Kaune; K. Kreimes
Chemosphere. - 38(1999)10, S. 2263-2279
March 1999
Methoden zur ökologischen Sanierung der ehemaligen Rieselfelder in Berlin-Buch
Gerhard Ginzel
Zentralblatt für Geologie und Paläontologie : Teil 1. - (1999)1/2, S. 93-109
March 1999
The role of micro-organisms in the ecological connectivity of running waters
M. Pusch; D. Fiebig; I. Brettar; H. Eisenmann; B. K. Ellis; L. A. Kaplan; M. A. Lock; M. W. Naegeli; W. Traunspurger
Freshwater Biology. - 40(1998)3, 453-495
March 1999
Bedeutung der Flußmorphometrie für Herkunft, Wachstum und Verluste von Planktonalgen in Fließgewässern
Jan Köhler
Nova acta Leopoldina : Suppl. - 15(1998), S. 135-152
January 1999
Phosphorus retention mechanisms in the sediment of an eutrophic mining lake
Michael Hupfer; Peter Fischer; Kurt Friese
Water, air, and soil pollution. - 108(1998)3-4, S. 341-352
January 1999
Phylogenetic position of the Phacotaceae within the Chlamydophyceae as revealed by analysis of 18S rDNA and rbcL sequences
D. Hepperle; H. Nozaki; S. Hohenberger; V. A. R. Huss; E. Morita; L. Krienitz
Journal of molecular evolution. - 47(1998)4, S. 420-430
January 1999
Manipulation of the sediment-water interface of extremely acidic mining lakes with potatoes
A. Fyson; B. Nixdorf; C. E. W. Steinberg
Water, Air and Soil Pollution. - 108(1998)3-4, S. 353-363
January 1999
Deriving restoration goals for acidified lakes from ataxonomic phytoplankton studies
C. E. W. Steinberg; H. Schäfer; W. Beisker; R. Brüggemann
Restoration ecology. - 6(1998)4, S. 327-335