Browsing Department of Biological Sciences by Title
Now showing items 551-570 of 2230
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Ecology of testate amoebae (Protista) in south-central Alaska peatlands: building transfer-function models for palaeoenvironmental studies
(Peer reviewed; Journal article, 2006)Testate amoebae are valuable indicators of peatland hydrology and have been used in many palaeoclimatic studies in peatlands. Because the species' ecological optima may vary around the globe, the development of transfer ... -
Ecosystem consequences of multi-trait response to environmental changes in Japanese medaka, Oryzias latipes
(Journal article; Peer reviewed, 2020)Intraspecific trait variation has large effects on the ecosystem and is greatly affected by human activities. To date, most studies focused on single-trait analyses, while considering multiple traits is expected to better ... -
Ecosystem model for evaluating potential cod production in a west Norwegian fjord
(Peer reviewed; Journal article, 1992-12-08)The carrying capacity for cod in a Norwegian fjord was analysed by means of a simulation model. Four age groups of cod were represented as well as the maln prey groups labrids, gobies and benthic organisms. These groups ... -
Ecosystem Resilience and Threshold Response in the Gala´pagos Coastal Zone
(Peer reviewed; Journal article, 2011-07-21)Background: The Intergovernmental Panel on Climate Change (IPCC) provides a conservative estimate on rates of sea-level rise of 3.8 mm yr21 at the end of the 21st century, which may have a detrimental effect on ecologically ... -
Ecosystem services show variable responses to future climate conditions in the Colombian páramos
(Journal article; Peer reviewed, 2021)Background: The páramos, the high-elevation ecosystems of the northern Andes, are well-known for their high species richness and provide a variety of ecosystem services to local subsistence-based communities and regional ... -
An ecosystem-scale litter and microplastics monitoring plan under the Arctic Monitoring and Assessment Programme (AMAP)
(Journal article; Peer reviewed, 2022)Lack of knowledge on levels and trends of litter and microplastics in the Arctic, is limiting our understanding of the sources, transport, fate, and effects is hampering global activities aimed at reducing litter and ... -
Ecotypes or Genotypes? The Status of the Currently Recognized Infraspecific Taxa of Acacia tortilis (Forssk.) : Hayne Growing in the Red Sea Hills, Sudan and Egypt
(Doctoral thesis, 2007-12-07)This study focuses on the Acacia tortilis species complex and the taxonomic relationship among its currently recognized infraspecific (A. tortilis ssp. tortilis, ssp raddiana and ssp. spirocarpa) in the Red Sea Hills of ... -
Ectopic epithelial cell clusters in salmonid intestine are associated with inflammation
(Peer reviewed; Journal article, 2018-06-11)An epizootic incidence of intestinal adenocarcinomas was reported in brood fish of Atlantic salmon (Salmo salar L.) in 2009. The condition was associated with a specific diet inducing enteritis and morphological changes. ... -
Editorial: Responses to climate change in the cold biomes
(Peer reviewed; Journal article, 2019-03-28) -
Effect of a plant-based low-fishmeal diet on digestive physiology in yellowtail Seriola quinqueradiata
(Peer reviewed; Journal article, 2019)To characterize the effects of a plant-based low-fishmeal (LFM) diet on the digestive physiology of yellowtail, Seriola quinqueradiata, we prepared two isonitrogenous and isolipidic diets; an FM-based diet (diet Control, ... -
The effect of aerobic training on growth, muscle development and heart condition in Atlantic salmon (Salmo salar) post-smolts in large-scale semi-closed containment systems.
(Master thesis, 2017-06-24)Exposing fish to moderate water currents as a form of exercise is often perceived as positive for fish welfare, growth, muscle development and heart condition. This thesis examines what effect rearing Atlantic salmon (Salmo ... -
The effect of alternate-day feeding on growth and feed conversion in Atlantic cod Gadus morhua
(Journal article; Peer reviewed, 2021)This study aimed to investigate the effect of alternating feeding (Alt) compared with control being fed every day (Con) in the on-growth face of Atlantic cod. Individually marked fish (198 and 98 in the Con and Alt groups, ... -
Effect of Anisakis simplex (sl) larvae on the spoilage rate and shelf-life of fish mince products under laboratory conditions
(Peer reviewed; Journal article, 2014-12)Wild caught marine fish are commonly infected with anisakid nematodes lodging in the intestinal linings or in the fish muscle. One of the most commonly found nematode parasites in marine fish is Anisakis simplex. During ... -
Effect of carcass contamination on necrophagous invertebrate performance
(Journal article; Peer reviewed, 2021)Background The breakdown of dead organic matter is driven by a diverse array of organisms and is an important process increasingly impacted by a range of contaminants. While many studies have documented how contaminants ... -
The effect of climate variation and food availability on breeding success in Atlantic puffins at Hjelmsøya, Northern Norway
(Master thesis, 2016-05-27)The colony of Atlantic puffins (Fratercula arctica) at Hjelmsøya, in Northern Norway has experienced extensive annual fluctuations in breeding success. To investigate how climate variability affects the population dynamics ... -
The effect of CO2, total ammonia nitrogen and pH on growth of juvenile lumpfish (Cyclopterus lumpus)
(Journal article; Peer reviewed, 2023)The objective of this study was to examine the effects of CO2, total ammonia nitrogen (TAN: nitrogen bound as either NH3 or NH4+) and pH on the growth and survival of juvenile lumpfish in a two-month growth study. The ... -
The effect of continuous light at low temperatures on growth in Atlantic salmon reared in commercial size sea pens
(Peer reviewed; Journal article, 2017-10)The aim of this study was to investigate the effect of continuous light of different duration, applied from late autumn to spring in the second year of the production cycle, on the production performance of Atlantic salmon ... -
Effect of diet on molecular relationships between Atlantic cod larval muscle growth dynamics, metabolism, and antioxidant defense system
(Journal article; Peer reviewed, 2022)We studied molecular effects (RNAseq and qPCR) of first feeding prey types (copepods or rotifers/Artemia) on skeletal muscle myogenesis and growth dynamics (proliferation, differentiation), metabolism (glycolysis, ... -
Effect of different filter methods on water quality to a marine scallop hatchery
(Master thesis, 2010-05-31)Water quality in marine hatcheries is a critical aspect in the production of spat. Different filtering methods have been used to treat the intake seawater in the hatcheries. The Scalpro AS hatchery uses two different types ... -
The effect of fish behaviour and spatial structures on acoustic and trawl surveys
(Doctoral thesis, 2007-12-14)Time series of scientific survey estimates of fisheries resources are used to measure changes in stock size and composition. Standardization of sampling equipment and design is regarded crucial for reliable trawl and ...