Results 81 to 90 of about 49,115 (211)

Challenges and pitfalls of inferring microbial growth rates from lab cultures

open access: yesFrontiers in Ecology and Evolution
IntroductionAfter more than 100 years of generating monoculture batch culture growth curves, microbial ecologists and evolutionary biologists still lack a reference method for inferring growth rates.
Ana-Hermina Ghenu   +7 more
doaj   +1 more source

The rise and fall of major royal jelly proteins during a honeybee (Apis mellifera) workers' life

open access: yesEcology and Evolution, 2019
The genome of the western honeybee (Apis mellifera) harbors nine transcribed major royal jelly protein genes (mrjp1‐9) which originate from a single‐copy precursor via gene duplication.
Dirk Dobritzsch   +4 more
doaj   +1 more source

The Invasion of the Dwarf Honeybee, Apis florea, along the River Nile in Sudan

open access: yesInsects, 2019
The spread of the dwarf honeybee, Apis florea, in Sudan along the river Nile in a linear fashion provides a good model for studying the population dynamics and genetic effects of an invasion by a honeybee species.
Mogbel A. A. El-Niweiri   +2 more
doaj   +1 more source

SAFE - Sustainability Assessment For Enterprises: Die Methodik. Ein Instrument zur Unterstützung einer zukunftsfähigen Unternehmens- und Organisationsentwicklung [PDF]

open access: yes
-- In practice, questions of ecological company policy deal much more with technical questions than with organisational ones. In many guides for the implementation of an Environmental Management System the development of the organisation that first has ...
Baedeker, Carolin   +2 more
core  

Referate und Mitteilungen

open access: yesMeteorologische Zeitschrift, 1992
Huggett, R. J.: Climate, Earth Processes and Earth History. - Springer -Verlag, Berlin, Heidelberg etc., 1991; Kyle, T. G.: Atmospheric Transmission, Emission and Scattering.
R. Glowienka-Hense   +3 more
doaj   +1 more source

Berggebietsförderung und Ökologie : ein Widerspruch? [PDF]

open access: yesGeographica Helvetica
No abstract available.
C. Hanser
doaj   +1 more source

Leitlinien und Leitbilder für eine ökologisch orientierte Regionalplanung

open access: yesRaumforschung und Raumordnung, 1991
In dem Beitrag wird eingangs das Planungssystem von Landes- und Regionalplanung in der Bundesrepublik Deutschland erläutert und werden ökologische Planinhalte bzw. deren rechtliche Grundlagen anhand nordrhein-westfälischer Beispiele dargestellt.
Albert Schmidt
doaj   +1 more source

Konventionalisierung: Die Schattenseite des Biobooms [PDF]

open access: yes, 2008
Der Biolandbau ist vor gut 50 Jahren angetreten, um eine Alternative zur konventionellen Landwirtschaft zu bieten, eine Alternative zur Maximierung der Erträge, die weitgehend ohne Rücksicht auf Ökologie, Betriebsorganismus und Eigenständigkeit der ...
Bartel-Kratochvil, Dr. Ruth   +3 more
core  

Insecticidal Toxicity of Yersinia frederiksenii Involves the Novel Enterotoxin YacT

open access: yesFrontiers in Cellular and Infection Microbiology, 2018
The genus Yersinia comprises 19 species of which three are known as human and animal pathogens. Some species display toxicity toward invertebrates using the so-called toxin complex (TC) and/or determinants that are not yet known.
Katharina Springer   +6 more
doaj   +1 more source

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