Now showing items 21-30 of 472
Metagenomic analysis of ammonia-oxidizing archaea affiliated with the soil group
Ammonia-oxidizing archaea (AOA) have recently been recognized as a significant compo- nent of many microbial communities and represent one of the most abundant prokaryotic groups in the biosphere. H owever, only few ...
Korleis gjekk det med havbeiteforsøket med torsk i Masfjorden?
Mechanisms of cataract development in adult Atlantic salmon growers relative to dietary histidine and plant feed ingredients
(The University of Bergen, 2010-03-19)
Cataracts are defined as opacities of the eye lens and can be caused by a large number of risk factors. In aquaculture, cataracts in farmed Atlantic salmon (Salmo salar L.) represent an ethical problem and can cause ...
Growth reaction norms of domesticated, wild and hybrid Atlantic salmon families in response to differing social and physical environments
(BioMed Central, 2013-10-28)
<p>Background: Directional selection for growth has resulted in the 9-10th generation of domesticated Atlantic salmon Salmo salar L. outgrowing wild salmon by a ratio of approximately 3:1 when reared under standard hatchery ...
Male reproductive biology of European hake Merluccius merluccius
(The University of Bergen, 2010-05-14)
The reproductive biology of European hake (Merluccius merluccius) has been studied extensively in the field, but mainly focusing on fecundity regulation in females and its implications for the fishery. The European hake ...
Radiometrically determined dates and sedimentation rates for recent sediments in nine North African wetland lakes (the CASSARINA Project)
Sediment cores were collected from nine wetland lakes in Morocco, Tunisia and Egypt for the CASSARINA project investigating environmental change in Northern African wetlands. The cores were dated radiometrically by using ...
Zooplankton abundance and distribution around on a seamount in the Andaman Sea, Thailand, measured with acoustic methods and biological sampling
(The University of Bergen, 2011-08-30)
Studies of abundance and distribution of zooplankton with acoustic instruments is new methodology in Thailand. In order to evaluate if the zooplankton could be detected and measured, a specific area around a seamount in ...
Establishment of Pinus wallichiana on a Himalayan glacier foreland: stochastic distribution or safe sites?
(The Institute of Arctic and Alpine Research, 2006)
The establishment of tree seedlings in primary succession is thought to occur only after an adequate reserve of nutrients has accumulated in the soil. Individuals of Pinaceae are sometimes reported to grow on very recently ...
Fragile mountain - fragile people? Understanding the fragility in the Himalayas : Report on a Workshop in Norway
(International Mountain Society, 2004)
Responses of tundra plants to experimental warming : meta-analysis of the international tundra experiment
(Ecological Society of America, 1999)
The International Tundra Experiment (ITEX) is a collaborative, multisite experiment using a common temperature manipulation to examine variability in species response across climatic and geographic gradients of tundra ...