Now showing items 71-80 of 689
Review of the Tanzanian prawn Fishery
(The University of Bergen, 2011-05-30)
A review of the prawn fishery of Tanzania from its development in early 1980's to closure in 2008 has been performed based on three major data sets; industrial prawn and fish catch data from Fisheries Division, river ...
Tracing recovery from acidification in the Western Norwegian nausta watershed
(Royal Swedish Academy of Sciences, 2003)
A novel method, redundancy analysis (RDA), has been used to examine whether chemical recovery from acidification in the western Norwegian Nausta watershed produces detectable recovery within the community structure of ...
Methods for acoustic identification and measurements of copepod abundance at specific North Sea sandeel grounds
(The University of Bergen, 2011-04-15)
In recent years there has been a decline in both size and the geographical distribution of the sandeel stock. The decline has been particularly profound in the Norwegian economic zone where the sandeel play an important ...
Climate History of the Arctic: temperature reconstruction of an arctic lake on Spitsbergen based on chironomid
(The University of Bergen, 2010-06-01)
ABSTRACT. The increase in global climatic changes seen in recent years is debated to be a result from expanding anthropogenic activity. The aim for the study is to contribute to the climatic history at western ...
Acoustic attenuation by air bubble in bad weather conditions; a comparison of hull- and keel-mounted transducers
(The University of Bergen, 2009-08-25)
Echo integration in bad weather conditions is problematic due to vessel- and wind-induced air bubble layer that is formed below the hull of a vessel, where acoustic transducers are mounted. The bubbles below the hull ...
Cognition: Learning and Memory
(Science Publishers, 2008)
A fish introduction and its impact on the plankton community
(The University of Bergen, 2012-08-20)
This thesis is about how one species can invade an ecosystem and change the whole biological community within a few years. The question is whether such changes can be foreseen or are more or less unpredictable? Biological ...
Evaluating primary (cry1Ab) and secondary effects (deoxynivalenol) of GM maize when fed to zebrafish (Danio rerio). Investigating growth, intestinal mRNA and white blood cell differentiation
(The University of Bergen, 2012-06-01)
Several of the plants which are currently being used in fish feed in Norway today, are being genetically modified (GM) around the world. The use of GM plants is increasing worldwide, and whether these are safe to use ...
Effects of simulated environmental changes on growth and growth form in a late snowbed population of pohlia wahlenbergii (Web. et Mohr) Andr
(The Institute of Arctic and Alpine Research, 2003)
In a factorial field experiment we increased the temperature (OpenTop Chambers) and nutrients (nitrogen, phosphorus, and potassium[NPK]) to simulate predicted future climate changes and studiedthe growth response of the ...