Results 101 to 110 of about 55,247 (248)

Physical measures to inhibit planktonic cyanobacteriae [PDF]

open access: yes, 1992
In a small lake, intermittent destratification was installed after several other physico-chemical and physical in-lake therapy measures (phosphorus immobilization, permanent destratification) had been tested without great success.
Gruhl, E., Steinberg, C.E.W.
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Ökomorphologie : Integration von Form, Funktion und Ökologie bei der Analyse morphologischer Strukturen [PDF]

open access: yes, 2008
Organisms are complex entities whose study has necessitated an increasingly reductionistic stance in modern biology (CAPLAN 1987). As a consequence, biology as a science has been split up into numerous sub-disciplines.
Betz, Oliver
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Photophysiological performance of zooxanthellate endosymbionts (Symbiodiniaceae) in the golden jellyfish Mastigias papua across a natural environmental gradient in marine lakes of Palau (Micronesia)

open access: yesFrontiers in Photobiology
IntroductionUnderstanding how organisms adapt to complex and variable environments requires in situ analysis of ecological performance in different environments.MethodsIn this multi-year study, we investigate the photophysiological performance of ...
Philippe Pondaven   +8 more
doaj   +1 more source

Studying conversion as a human activity system [PDF]

open access: yes, 2002
This report was presented at the UK Organic Research 2002 Conference. Farmers convert to organic farming for a variety of reasons including environmental concerns, problems with conventional systems, and personal and financial reasons.
Padel, Susan
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The „Rothenbuch concept of dead wood and habitat trees“ and its effects on the diversity of structures and biodiversity of beech-forests [PDF]

open access: yes, 2007
In einem ausgedehnten Laubwaldgebiet im Hochspessart (Nordwestbayern, Bezirk Unterfranken) wurde 2006 untersucht, ob sich alte Rot-Buchenbestände, die seit mehr als 15 Jahren nach dem „Rothenbucher Totholz- und Biotopbaumkonzept“ bewirtschaftet werden ...
Blaschke, Markus   +4 more
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Organic Viticulture World-Wide [PDF]

open access: yes, 2000
In most wine growing countries organic viticulture is now becoming more and more important. In most non-European countries organic viticulture is still in an initial stage and the number of organic vineyards is still small.
Geier, Bernward   +2 more
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